+

WO1999050596A2 - Dispositif d'eclairage generant un faisceau lumineux non symetrique, reseau de verres optiques et verre optique - Google Patents

Dispositif d'eclairage generant un faisceau lumineux non symetrique, reseau de verres optiques et verre optique Download PDF

Info

Publication number
WO1999050596A2
WO1999050596A2 PCT/RU1999/000082 RU9900082W WO9950596A2 WO 1999050596 A2 WO1999050596 A2 WO 1999050596A2 RU 9900082 W RU9900082 W RU 9900082W WO 9950596 A2 WO9950596 A2 WO 9950596A2
Authority
WO
WIPO (PCT)
Prior art keywords
fresnel
cylindrical
light
plane
lenses
Prior art date
Application number
PCT/RU1999/000082
Other languages
English (en)
Other versions
WO1999050596A3 (fr
Inventor
Vladimir Iliich Balashov
Alexandr Lvovich Zakgeim
Grigory Vladimirovich Itkinson
Arkady Semenovich Kobitsky
Mikhail Nikolaevich Mizerov
Yury Sergeevich Skvortsov
Mikhail Naumovich Sokolsky
Andrej Evgenievich Suetov
Vladimir Petrovich Tregub
Boris Ivanovich Utenkov
Original Assignee
Otkrytoe Aktsionernoe Obschestvo Lomo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otkrytoe Aktsionernoe Obschestvo Lomo filed Critical Otkrytoe Aktsionernoe Obschestvo Lomo
Priority to AU33476/99A priority Critical patent/AU3347699A/en
Publication of WO1999050596A2 publication Critical patent/WO1999050596A2/fr
Publication of WO1999050596A3 publication Critical patent/WO1999050596A3/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0961—Lens arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/0062—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • G02B3/0068—Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between arranged in a single integral body or plate, e.g. laminates or hybrid structures with other optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to optical systems and in particular to illumination devices.
  • FIG. 1 illustrates requirements for angular distribution of light from such devices established by The Russian State Standard No. 25695-91 "Traffic Lights. Types and Main Specifications". As shown by FIG.
  • FIG. 2 Angular distribution of light radiated from a typical LED suitable for such application is presented in FIG. 2. Comparison of FIG. 2 with FIG. 1A and especially with FIG. 2B makes it evident that appropriate optical components must be employed in the illumination device to transform the distribution of light represented in FIG. 2 into the desired distributions shown in FIG 1.
  • Japan Patent Application No. 3-6601 discloses an example of an illumination device comprising, in addition to a LED array, a plurality of condenser lenses forming the first lens array and an external diffuser formed by the second lens array.
  • Simple spherical lenses are used in both lens arrays, and each LED is located on an optical axis of the corresponding condenser lens, in the front focal plane thereof. This means that the number of condenser lenses in the first lens array is equal to the total number of LEDs; number of lens in the second lens array substantially exceeds that of the first array.
  • Lenses of both lens arrays in the prior art system are arranged in mutually parallel rows, and each of these arrays may be formed as a single optical component.
  • both arrays may be combined into a single condensing/diffusing unit with surfaces of the condenser lenses formed at its inner side and surfaces of the diffuser lenses formed at its outer side.
  • a more specific object of this invention is to provide an improved illumination device of the type employed in the traffic lights for generating a light beam with the first, symmetric distribution of light energy in the first (horizontal) plane and the second, preferably non- symmetric distribution in the second (vertical) plane.
  • One more object of the present invention is to provide an optical lens array that is capable to transform a symmetrically distributed light beam into a light beam with non- symmetric angular distribution of light energy.
  • a further object of the present invention is to provide an optical lens which can be employed either as an isolated optical element or as a component of a lens array for performing said transformation of a symmetrically distributed light beam into a light beam with a non-symmetric distribution.
  • Still another object of this invention is to provide an improved illumination device comprising, in addition to a light source constituted by an array of light-emitting diodes, two optical lens arrays designed, in accordance with teachings of the present invention, from a plurality of lenses, at least part of which are formed in accordance with teachings of the present invention.
  • an illumination device generating a light beam with wider angular spread in the first, preferably horizontal, plane and a narrower angular spread in the second, preferably vertical plane, perpendicular to said first plane
  • said system comprising: a light source formed by an array of light-emitting diodes (LEDs) located in a third plane, substantially perpendicular to said first plane and to said second plane; a condenser comprising a plurality of condenser lenses forming a first optical lens array and having their front focal surfaces substantially coinciding with said third plane; and a diffuser located behind said condenser in the direction of propagation of said light beam, said diffuser comprising a plurality of lenses forming a second optical lens array.
  • LEDs light-emitting diodes
  • Both LEDs and condenser lenses are preferably arranged in rows substantially parallel to the first (horizontal) plane, while each of said light-emitting diodes is located on an optical axis of one of said condenser lenses It is preferred that the first and the second lens arrays forming the condenser and the diffuser are made according to preferred embodiments of the lens array of the present invention described below.
  • condenser lenses of the first lens array and of the second lens array are formed according to preferred embodiments of the optical lens of the present invention described below.
  • an optical lens array which may be employed in various illumination devices and in particular as the second lens array which functions as a diffuser in various preferred embodiments of the illumination system in accordance to the present invention.
  • the diffuser comprises conventional cylindrical lenses.
  • cylindrical surfaces of said cylindrical lenses are formed on an outer (rear) side of said diffuser, and generatrixes of said cylindrical surfaces are substantially parallel to the second (vertical) plane.
  • distances between optical axes of adjacent cylindrical lenses with vertical generatrixes or facets are selected to be substantially, preferably 3 to 6 times less than a minimal distance between adjacent light- emitting diodes in a row of light-emitting diodes.
  • conventional cylindrical surfaces of the diffuser are replaced with cylindrical Fresnel surfaces with grooves, or stepwise Fresnel facets oriented substantially parallel to said second plane.
  • cylindrical Fresnel surfaces with facets parallel to the first, horizontal plane may be also used in the first and/or the second lens array.
  • Both lens arrays employed in the illumination system of the present invention may be combined into a single lens array functioning as a condensing/diffusing unit with surfaces of condenser lenses formed at its inner (front) side and cylindrical surfaces of diffuser lenses formed at its outer (rear) side.
  • the inner side of such condensing/diffusing unit may be formed as a plurality of cylindrical Fresnel surfaces. All embodiments of the present invention employing a single condensing/diffusing unit, even though they are somewhat more difficult to manufacture, possess an important advantage of saving more light generated by the light source by minimizing the number of optical surfaces through which the light beam propagates.
  • an optical lens which may be employed either as an isolated optical element or as a component of the first or the second lens array of the invention.
  • the lens in accordance with the present invention is that one side thereof is formed as a spherical or as a cylindrical Fresnel surface, while the opposite side of the lens may be formed either as a cylindrical Fresnel surface or as a group of conventional cylindrical surfaces. Composed in this way the lens of the present invention acts essentially as a combination of a spherical or cylindrical Fresnel lens with several conventional cylindrical lenses or with another Fresnel lens.
  • a Fresnel lens is one which uses piecewise discontinuous portions, or stepwise Fresnel facets, of relatively thin material to approximate the optical characteristics of a much thicker conventional lens of equal power.
  • Fresnel lenses have low aberrations in comparison to conventional lenses and they are easier to manufacture than aspherical lenses of the same low aberration level.
  • one or each Fresnel surface formed thereon may comprise a combination of at least two zones with different set of optical characteristics.
  • the expression "different set of optical characteristics" means that zones composing a combined Fresnel surface differ from each other at least by their focal distances or by position of their optical axes.
  • different zones of a combined Fresnel surface shall have different areas, with one zone having an area which is substantially, preferably not less than 2 times, larger than the area of any other zone of the same surface.
  • the said largest zone is preferably arranged around a center of said surface; and at least one zone of a lesser area is shifted in relation to the largest zone of the same combined surface in the direction substantially parallel to a plane in which non-symmetric light distribution must be produced.
  • FIG. 1 and 1B represent in a simplified graphical form the desired distribution of light generated by a traffic light illumination system in the horizontal plane and the vertical plane correspondingly.
  • FIG. 2 represents in a simplified graphical form a distribution of light generated by a typical powerful light-emitting diode.
  • FIG. 3 is a much simplified perspective view of the first embodiment of the illumination system which uses conventional cylindrical lenses in the diffuser.
  • FIG. 4 shows an arrangement of condenser lenses for use with a specific sample of a traffic light.
  • FIG. 5 shows ray paths for a light beam generated by a single LED in horizontal and vertical planes when spherical Fresnel surfaces are employed to provide condenser lenses forming the first lens array.
  • FIG. 6 shows similar ray paths in the horizontal and vertical planes when both lens arrays are combined into the condensing/diffusing unit.
  • FIG. 7 shows a front view, from the side of the LED array, of a condenser lens with a combined spherical Fresnel surface consisting of two zones.
  • FIG. 8 and 9 shows ray paths in the vertical plane through the zones of the condenser lens of FIG. 7 with correspondingly the largest and a smaller zone areas.
  • FIG. 10 shows ray paths in the horizontal plane through the condenser lens of FIG. 7.
  • FIG. 11 and 12 show ray paths correspondingly in the vertical and horizontal planes for an embodiment of the illumination system with cylindrical Fresnel surfaces formed on the inner side of the diffuser.
  • FIG. 13 and 14 show ray paths correspondingly in the vertical and horizontal planes for an embodiment of the illumination system with the first lens array composed by Fresnel lenses while the diffuser is formed with the cylindrical Fresnel surfaces on both its inner and outer sides.
  • FIG. 15 and 16 show ray paths correspondingly in the vertical and horizontal planes for an embodiment of the illumination system with the combined cylindrical Fresnel surfaces on the outer side of the diffuser.
  • FIG. 17 and 18 show ray paths correspondingly in the vertical and horizontal planes for an embodiment of the illumination system with two lens array combined into a condensing/diffusing unit having combined cylindrical Fresnel surfaces on both its inner and outer sides.
  • 100 denotes generally a light source composed by an array of light-emitting diodes, or LEDs 1.
  • the array 100 may include LEDs with similar or different characteristics.
  • the total number of LEDs in the array is determined jointly by the intended use of the device and characteristics of LEDs. For example, about 150 LEDs of average radiated power of 5 mW may be required to create a red section of a traffic light with a diameter of 200 mm, while the number of LEDs required for a green section of the same diameter will be several times less.
  • FIG. 3 To give a general picture of the illumination system of the invention, only several LEDs out of a plurality of LEDs composing the array 100 are shown in FIG. 3. As can be seen, all LEDs of the array are located in a vertical plane (designated by P) which is oriented perpendicular to both the first (horizontal) and the second (vertical) sections of light beams radiated by each LED.
  • the second main part of the illumination system is constituted by the condenser 200 which is composed by the first lens array 210 of condenser lenses 2.
  • the condenser 200 which is composed by the first lens array 210 of condenser lenses 2.
  • all lenses 2 of the lens array 210 have the same optical characteristics, and are located in the same vertical plane which is parallel to the plane P.
  • the distance between this plane and plane P is selected in such a way that front focal surfaces of all condenser lenses 2 coincide with the plane P where LEDs are located.
  • Each LED is placed on the optical axis 0 2 of the condenser lens 2 corresponding to this LED.
  • the total number of condenser lenses in the first lens array 210 evidently equals the total number of LEDs 1 in the array 100, and a configuration of the lens array 200 closely follows a configuration of the LEDs array.
  • LEDs 1 and condenser lenses 2 are preferably arranged in rows 1-a, 1-b, ... 1n and 2-a, 2-b,... 2n correspondingly, which rows are substantially parallel to each other and to the horizontal plane.
  • FIG. 4 illustrates an arrangement of hexagonal condenser lenses 2 forming the lens array 210 for use with a specific embodiment of the traffic light device.
  • This example makes it clear that the configuration of the lens array 210 (which repeats the configuration of the LED array) is determined by a character of the illumination system and its field of use.
  • the number of condenser lens 2 in a row may substantially differ from row to row of the lens array; adjacent rows of condenser lenses may be mutually shifted in the horizontal direction; in some cases the rows of condenser lenses may be oriented vertically instead of horizontally or be slanted.
  • the third main part of the illumination system is the diffuser 300 composed by the second lens array 310 which is located behind, or rearward from the condenser 200 as seen in the direction of propagation of light beams radiated by LEDs array 100.
  • the second lens array 310 consists of a plurality of cylindrical lenses 3.
  • the inner, or front side 31 of the lens array 310 of the condenser 200 may be made flat, while cylindrical surfaces 36 of the cylindrical lenses 3 are formed on the outer side 32 of the lens array 310.
  • generatrixes of the cylindrical surfaces 36 are oriented substantially parallel to the vertical plane, while in the horizontal direction these cylindrical surfaces 36 are very closely spaced, so that the outer side 32 of the second lens array 310 is completely filled by them.
  • the number of cylindrical lenses 3 corresponding to one LED 1 in each row of LEDs array 100 is determined by required characteristics of the illumination system. By increasing this number, more smooth distribution of light exiting the illumination system can be obtained, and lenses of lesser thickness can be employed, with trade-off consisting in increase in manufacturing costs. For typical uses in a traffic light it is recommended to employ 3 to 6 cylindrical lenses 3 per each LED 1 (and consequently per each condenser lens 2) in each row.
  • a distance between vertical axes of the cylindrical surfaces 36 are selected to be 3 to 6 times less than a minimal distance between adjacent LEDs in any row of LEDs and correspondingly 3 to 6 times less than a minimal distance between optical axes O 2 of adjacent lenses 2 in a row of condenser lenses.
  • any real illumination system implementing the present invention in addition to described parts 100, 200 and 300, must also include such parts as a housing to contain and support all optical components, appropriate fixing means to secure various parts in their respective places inside the housing, a power source for supplying the LEDs with electric energy, switching means for switching the LEDs on and off, etc.
  • one of the surfaces of at least some of the condenser lenses 2 of the first lens array 210 is formed as a Fresnel surface 6.
  • Fresnel surface consists of a plurality of discontinuous portions, or Fresnel facets, or grooves.
  • Each of these facets in cross-section by a tangential plane has a shape approximating a right-angle triangle with a hypotenuse slanted at an angle determined by the Fresnel equation, well known to those skilled in the art.
  • lens 2 is preferably made with concentric Fresnel facets and therefore forms a usual Fresnel lens which is optically equivalent to a conventional spherical lens.
  • the former will be called hereinbelow a spherical Fresnel surface. Because the rules of calculating optical characteristics of such Fresnel surfaces (i.e. angular and linear parameters of their facets) are well known and described in a number of textbooks on optics, they will not be discussed here. Comparing ray paths in horizontal and vertical planes shown in FIG.
  • both lens arrays 210 and 310 may be combined into the condensing/diffusing unit 400.
  • a plurality of spherical Fresnel surfaces 6 are patterned on the inner side 41 of the condensing/diffusing unit 400, that is on the side turned towards the LEDs array 100.
  • the surfaces 6 form Fresnel lenses 2a, and the plurality of spherical Fresnel lenses 2a form the first lens array 210 with exactly the same configuration as that of the array of FIG. 3.
  • the opposite, exit side 42 of the condensing/diffusing unit 400 is formed exactly as the outer side of the diffuser 3, by cylindrical surfaces 36 corresponding to cylindrical lenses 3 constituting the second lens array 310. It must be evident from the above description of the embodiments illustrated by FIGS.
  • each of at least some of spherical Fresnel surfaces 6a formed on the entrance side 41 of the condensing/diffusing unit 400 are made as a combination of at least two zones 62a and 63a with mutually offset optical axes (for clarity, only one of lenses 6a from the first lens array is shown in FIGS 7-10).
  • These zones 62a and 63a function as two Fresnel lenses with shifted, or mismatched optical axes 0 62 , 0 6 3 (positions of these optical axes coincide in FIG. 7 with centers of each zone).
  • Relation between areas of such zones, as well as a size of the shift between their optical axes are dictated by characteristics of the desired distribution of the light beam.
  • the main part of light energy in the vertical section of the light beam must be distributed symmetrically relative to the horizontal direction, while a substantially smaller part of the beam must be directed downwards at an oblique angle of 0 ° - 8°.
  • Such distribution may be achieved with the embodiment of FIGS.
  • zone 62a has an area substantially larger than the area of the second zone 63b or of any other zone composing the same Fresnel surface.
  • the largest zone 62a must be arranged, as shown in FIG. 7, around a center of the combined spherical Fresnel surface 6a.
  • Relative sizes of zones composing the spherical Fresnel surface are determined by a share of light to be deviated from the main light beam.
  • the part of the beam to be directed downwards must correspond to about 25% of the total light energy exiting the illumination system.
  • the ratio of areas of the zones 62a and 63a must correspond to 4 : 1. In general this ratio is recommended to be not less than 2 : 1.
  • the direction of the shift of the position of the smaller zone 63a in relation to the largest zone 62a must correspond to the required direction of deviation of the part of the light beam.
  • the case of traffic lights corresponds to downward shift of the zone 63a.
  • Distinctive feature of embodiments shown in FIGS. 11 to 16 consists in that a Fresnel surfaces are formed at least on the outer side of the diffuser 300a.
  • the Fresnel surfaces of the diffuser 300a comprise not concentric, but rectilinear Fresnel facets 81 or 82 with cross-section in the form of a right-angle triangle with a hypotenuse slanted at an angle determined by the Fresnel equation (see for example FIGS. 15 and 16).
  • Fresnel surface of this type is optically equivalent to a conventional cylindrical lens with a generatrix parallel to Fresnel facets. For that reason this kind of Fresnel surface will be called hereinbelow a cylindrical Fresnel surface.
  • An optical element with a cylindrical Fresnel surface constitutes a cylindrical Fresnel lens.
  • cylindrical Fresnel lenses over conventional cylindrical lenses are similar to the advantages of spherical Fresnel lenses over conventional spherical lenses which have been already discussed above.
  • cylindrical Fresnel surfaces can be conveniently formed by moulding or by similar technologies which make their use economically attractive.
  • Fresnel facets of the cylindrical Fresnel surfaces may be oriented horizontally (as are facets 81 in FIGS. 11, 13 and 15), for shaping the light beam in the vertical plane, or vertically (as facets 82 in FIGS. 14 or 16) for shaping the light beam in the horizontal plane.
  • the first lens array is composed by the condenser lenses 2 similar to those shown in FIG. 5 (only one lens 2 is shown for simplicity), while cylindrical lenses 3 formed by cylindrical surfaces 36 on the outer side of the diffuser 310 are similar to lenses 3 also shown in FIG. 5.
  • Cylindrical Fresnel surfaces 8a in this embodiment are formed on the inner side 31 of the diffuser 300 (these surfaces will be called internal cylindrical Fresnel surfaces to distinguish them from other surfaces of the same kind).
  • Facets 81 of the surfaces 8a are oriented horizontally, that is parallel to the rows of the condenser lenses 2 and the LEDs 1 , and each cylindrical Fresnel surface 8a corresponds to a different row of the condenser lenses 2. At least some of Fresnel surfaces 8a are formed, similar to Fresnel surface shown in FIGS. 7 to 10, as a combination of two zones 83, 84 with different focal distances.
  • the combined cylindrical Fresnel surfaces 8a are employed in the embodiment illustrated in FIGS. 11 and 12 precisely for the same purpose as the combined spherical Fresnel surfaces 6a in the embodiment of FIGS.
  • zone 84 one zone of each combined cylindrical Fresnel surface shall have an area which is substantially (in general case at least 2 times) larger than an area of the other, smaller zone 83 of the same combined surface 8a (or any other zone if there are more than two zones). Zones 84 and 83 are shifted relative to each other in the vertical plane, that is in the plane in which it is desired to obtain non- symmetric distribution of light energy.
  • zones with different focal distances can be provided on combined cylindrical Fresnel surfaces by selecting appropriately different values of R.
  • Fresnel surfaces of two different types are also used.
  • Spherical Fresnel surfaces 81 are again employed for forming the condenser lenses 2a of the first lens array 210.
  • the internal cylindrical Fresnel surfaces with the horizontal facets are formed on the inner side 31 of the diffuser 300b with the purpose of obtaining the required angular distribution in the vertical plane. If this required distribution is non-symmetric, then, similar to preceding embodiment, the internal cylindrical Fresnel surfaces are formed as combinations of two zones 84, 83 having different areas and with the largest zone 84 having the largest focal distance.
  • the external cylindrical Fresnel surfaces 8b with vertically oriented facets 82 are formed on the outer, or rear side 32 of the diffuser 300b with the purpose to achieve required distribution of light in the horizontal plane.
  • the function of each of the Fresnel surfaces 8b is precisely the same as that of the group of cylindrical surfaces 36 shown in FIGS. 3 to 12 as matched to one LED 1 in a row.
  • the angular spread in the horizontal plane is required to be substantially larger than the corresponding angular spread in the vertical plane. It means that the focal distances f 8b of the external cylindrical Fresnel surfaces 8b must be made substantially (e.g.
  • FIGS. 13 and 14 A plurality of cylindrical Fresnel lenses formed by cylindrical Fresnel surfaces 8a, 8b on both sides of the diffuser 300b corresponds to the second lens array 310b of the illumination system of this embodiment.
  • the first lens array may be formed either by the conventional spherical lenses 2b or by the Fresnel lenses with the spherical Fresnel surface similar to the surface 6 shown in the simplified form in FIG. 5.
  • the distinctive feature of this embodiment is that a part of external cylindrical Fresnel surfaces 8c formed on the rear side 32 of the diffuser 300c have horizontally oriented facets 85 (as shown in FIG. 15), while the remaining part of these Fresnel surfaces have vertically oriented facets 86 (see FIG. 16). Similar to embodiments shown in FIGS.
  • Fresnel surfaces 8c with horizontal facets may be formed as combinations of two zones with different focal distances, similar to zones 83 and 84 shown in FIGS. 11 and 12.
  • the cylindrical Fresnel surfaces 8c with vertically oriented grooves 86 serve, similar to surfaces 8b of the preceding embodiment, to shape the light beam in the horizontal plane.
  • the inner, or front side 31 of the diffuser 300c in this embodiment may be made simply as a flat plane.
  • the condenser and the diffuser are combined into the condensing/diffusing unit 400b similar to the condensing/diffusing unit presented in FIGS. 8 to 10.
  • the condenser lenses constituting the first lens array are formed using internal cylindrical Fresnel surfaces with front focal planes coinciding with the third plane P (see FIG. 3) in which the LEDs 1 of the LEDs array 100 are located (only one of these LEDs is shown for simplicity).
  • Some of the Fresnel surfaces forming the first lens array have horizontally oriented facets 85 (see FIG. 17), while the remaining surfaces have vertically oriented facets 86 (as shown in FIG. 18).
  • Each LED 1 is matched to a pair of cylindrical Fresnel surfaces, with one Fresnel surface of this pair having the horizontal facets and so serving to collimate the partial light beam passing through it in the vertical plane (as shown in FIG. 17), while the other Fresnel surface with the vertical facets collimates the partial light beam passing through it in the horizontal plane (as shown in FIG. 18).
  • the second lens array 310 in this embodiment is constituted by a plurality of external cylindrical Fresnel surfaces formed on the outer side 32 of the condensing/diffusing unit 400b.
  • the structure and, correspondingly, the functions of the second lens array 310 in this embodiment are similar to the second lens array of the preceding embodiment shown in FIGS. 13 and 14, so these functions will not be described in detail here.
  • This embodiment makes it possible to minimize the number of optical components when the light source uses limited number of LEDs, as it is for example the case with the green section of the traffic light.
  • LEDs 1 emit an axisymmetric beam of light. As was explained above, such beam does not satisfy requirements of various illumination devices, for example those employed in traffic or other signalling lights, so that appropriate transformation of the beam's shape is required.
  • the first stage of this transformation is effected by the condenser 200.
  • each of condenser lenses 2 have its front focal point aligned with a matched LED 1 and consequently the first lens array 210 of lenses 2 as a whole produce the parallel light beam LF which impinges on the diffuser 300.
  • the diffuser modifies the distribution of energy in this light beam LF in the horizontal and/or the vertical planes, according to the required shape of the light beam at the exit of the illumination system. For example, it must be evident to those skilled in the art that by using embodiments described with reference to FIGS. 3 to 5 and by composing each array with lenses of different types and features, it is possible to vary in rather large range parameters of distribution of the exiting light beam, for example to obtain substantially different distribution of light energy in the vertical and horizontal planes.
  • a required angular spread of light in the horizontal plane independently of its distribution in the vertical plane may be achieved by selecting appropriate focal distances of cylindrical lens 3 of the second lens array 310 in the diffuser 300 because these focal lengths determine the angle ⁇ h characterizing the spread of light in the horizontal plane.
  • FIGS. 3 to 6 it is impossible to achieve the object of obtaining a non-symmetric distribution of light in one of the planes passing through an axis of the beam's propagation, and in particular to redirect a part of the beam downwards, as required in traffic lights.
  • This object may be however achieved in accordance with the invention by using Fresnel surfaces formed as combinations of zones characterized by different sets of optical characteristics.
  • the cylindrical lenses 3 constituting the second lens array 310 shape the light beam passing through them only in the horizontal plane, so they do not influence this downward deviation of a partial beam which passes through the smaller zones 63a of the condenser lenses. As a result the desired distributions of light energy may be achieved in both the horizontal and vertical planes.
  • FIGS. 11 to 18 function, depending on orientation of their facets, as cylindrical lenses with horizontal or vertical orientation of their generatrixes.
  • surfaces with the vertical facets 82 it is possible to redistribute light energy in the horizontal direction (see for example FIG. 16).
  • cylindrical Fresnel surfaces with the vertical facets used as part of the diffuser 300b, 300c can replace cylindrical surfaces 36.
  • Surfaces with the horizontal facets 81 are effective for redistributing light energy in the vertical direction (as shown in FIGS. 11 and 12). By combining these two types of surfaces it becomes possible to control the shape of the light beam in both directions, as illustrated by FIGS. 13 to 18.
  • the largest zone 84 must form a main part of the light beam with a symmetric angular spread of ⁇ 3°, while the part of the light beam deviated by the zone 83 must have an angular spread of 0° to -8°.
  • the first required angular spread being less than the second one, the following relation must be observed: f 83 ⁇ f 84 .
  • the spread angle ⁇ 2 in the vertical plane of the partial light beam passing through the largest zone 84 with the longest focal length is substantially narrower than the spread angle ⁇ of the other partial beam passing through the other zone 83 with shorter focal length.
  • optical lenses made in accordance with the present invention may be easily assembled into lens arrays that may be also formed as single optical components for their effective use with arrays of light-emitting diodes to produce various illumination devices providing light beams of required shapes, including non-symmetric shapes in one or two planes.
  • the above-described illumination system is particularly suitable for use with traffic lights or similar signalling devices, it should be understood that it may also be embodied in a large number of other optical devices and systems employing non-symmetric light beams, such as for example, various signalling lights employed in vehicles of all kinds and the like. It is intended that all such applications of the described or modified optical lenses, lens arrays and illumination systems fall within the scope of the appended claims.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Cette invention concerne des dispositifs d'éclairage du type de ceux utilisés dans les feux de circulation, des réseaux de verres optiques que l'on utilise dans des dispositifs et des systèmes de ce type ou d'un autre, ainsi que des verres optiques que l'on utilise séparément comme éléments de tels réseaux. Ce verre permet de dévier une partie du faisceau lumineux selon un angle oblique par rapport à son axe optique le long duquel se propage la majeure partie dudit faisceau. Cet effet est obtenu en donnant à au moins un coté du verre la forme d'une surface de Fresnel qui est combinée à partir d'au moins deux zones ayant des ensembles de caractéristiques optiques différents l'un de l'autre. Dans divers modes de réalisation, l'autre côté de ces nouveaux verres peut se présenter sous forme d'une surface de Fresnel cylindrique classique qui comprend une combinaison de plusieurs surfaces cylindriques classiques dont les génératrices sont parallèles ou perpendiculaires à la direction du décalage entre les zones situées sur le premier côté desdits verres. Dans ce même mode de réalisation ou dans d'autres, plusieurs verres peuvent être disposés en réseaux qui permettent également de dévier une partie du faisceau lumineux dans une direction voulue décalée de l'axe principal, et de produire ainsi une répartition non symétrique de la lumière dans au moins un plan de propagation de la lumière. Ce dispositif d'illumination fait appel à un réseau de diodes lumineuses de grande puissance (100) ainsi qu'à deux réseaux de verres (200, 300) qui jouent le rôle de concentrateur et de diffuseur. Au moins un de ces réseaux se compose de verres ayant au moins une surface de Fresnel combinée, les deux réseaux pouvant se présenter sous forme d'une unité de concentration/diffusion monolithique.
PCT/RU1999/000082 1998-03-26 1999-03-22 Dispositif d'eclairage generant un faisceau lumineux non symetrique, reseau de verres optiques et verre optique WO1999050596A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU33476/99A AU3347699A (en) 1998-03-26 1999-03-22 Illumination device for generating non-symmetric light beam, optical lens array and optical lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU98104645 1998-03-26
RU98104645/09A RU2137978C1 (ru) 1998-03-26 1998-03-26 Осветительное устройство с несимметричным распределением светового потока относительно оптической оси

Publications (2)

Publication Number Publication Date
WO1999050596A2 true WO1999050596A2 (fr) 1999-10-07
WO1999050596A3 WO1999050596A3 (fr) 1999-12-09

Family

ID=20203351

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU1999/000082 WO1999050596A2 (fr) 1998-03-26 1999-03-22 Dispositif d'eclairage generant un faisceau lumineux non symetrique, reseau de verres optiques et verre optique

Country Status (3)

Country Link
AU (1) AU3347699A (fr)
RU (1) RU2137978C1 (fr)
WO (1) WO1999050596A2 (fr)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001016524A1 (fr) * 1999-08-27 2001-03-08 Lumileds Lighting B.V. Luminaire, element optique et procede d'eclairage d'un objet
WO2001040706A1 (fr) * 1999-11-29 2001-06-07 Koninklijke Philips Electronics N.V. Luminaire
EP1146572A2 (fr) * 2000-03-14 2001-10-17 Toyoda Gosei Co., Ltd. Dispositif de source lumineuse
WO2002046806A3 (fr) * 2000-12-06 2002-08-15 Dainippon Printing Co Ltd Lentille de fresnel et matrice pour celle-ci
US6462891B1 (en) 2000-04-20 2002-10-08 Raytheon Company Shaping optic for diode light sheets
WO2002033449A3 (fr) * 2000-10-17 2002-11-07 Osram Opto Semiconductors Gmbh Dispositif optique
WO2004001459A1 (fr) * 2002-06-21 2003-12-31 Stührenberg GmbH Elektrobau-Signaltechnik Optique de transmission de signaux comportant plusieurs sources lumineuses
GB2407149A (en) * 2003-10-15 2005-04-20 Ju-Yuan You Lamp assembly of traffic light
WO2005083318A1 (fr) * 2004-02-26 2005-09-09 Tir Systems Ltd. Appareil pour former un motif de faisceaux lumineux asymetriques
EP1574892A2 (fr) * 2004-03-10 2005-09-14 Sumitomo Electric Industries, Ltd. Système optique pour homogénéiser des faisceaux lumineux avec un élément optique diffractif
EP1107210A3 (fr) * 1999-12-09 2006-04-19 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Emetteur de signaux à diodes électroluminescentes avec plusieurs zones de diodes
WO2006068264A2 (fr) * 2004-12-21 2006-06-29 Sharp Kabushiki Kaisha Dispositif optique et source lumineuse
DE102005031710A1 (de) * 2005-07-05 2007-01-11 Sick Ag Optoelektronischer Sensor
EP1945007A1 (fr) * 2007-01-11 2008-07-16 Schreder Procédé d'optimisation de débit de dispositifs d'éclairage LED
WO2009053904A2 (fr) * 2007-10-25 2009-04-30 Koninklijke Philips Electronics N.V. Panneau d'éclairage et procédé de mise à disposition d'un tel panneau d'éclairage
US7584534B2 (en) 2005-01-10 2009-09-08 Perceptron, Inc. Remote inspection device
WO2010010494A1 (fr) * 2008-07-24 2010-01-28 Koninklijke Philips Electronics N.V. Luminaire doté de plusieurs unités d’éclairage
EP2357399A1 (fr) * 2010-02-16 2011-08-17 Koito Manufacturing Co., Ltd. Unité optique
US8132944B2 (en) 2008-05-23 2012-03-13 Ruud Lighting, Inc. Recessed LED lighting fixture
US8177380B2 (en) 2007-08-09 2012-05-15 Sharp Kabushiki Kaisha Light emitting device and lighting device having the same
WO2012101096A3 (fr) * 2011-01-28 2012-10-04 Osram Ag Dispositif lumineux
US20130201669A1 (en) * 2012-02-03 2013-08-08 Taiwan Semiconductor Manufacturing Company, Ltd Led illumination apparatus with improved output uniformity
WO2014007957A2 (fr) 2012-07-03 2014-01-09 3M Innovative Properties Company Articles à films décoratifs utilisant des films de lentille de fresnel
DE102013204476A1 (de) * 2013-03-14 2014-09-18 Osram Opto Semiconductors Gmbh Optisches Element und optoelektronisches Bauelement mit optischem Element
WO2015110286A1 (fr) * 2014-01-23 2015-07-30 Koninklijke Philips N.V. Diffuseur de lumière, agencement de lampes à diodes électroluminescentes utilisant celui-ci, et procédé de fabrication
US9223140B2 (en) 2008-12-17 2015-12-29 Ricoh Company, Ltd. Coupling lens, illuminating device, and electronic device
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
US20160091173A1 (en) * 2014-09-30 2016-03-31 The Boeing Company Array-based lighting systems and methods of manufacturing
US9476570B2 (en) 2008-05-23 2016-10-25 Cree, Inc. Lens with controlled backlight management
US9523479B2 (en) 2014-01-03 2016-12-20 Cree, Inc. LED lens
US9541258B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for wide lateral-angle distribution
US9541257B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for primarily-elongate light distribution
US9657918B2 (en) 2008-05-23 2017-05-23 Cree, Inc. Light fixture with wide-angle light distribution
US10408429B2 (en) 2012-02-29 2019-09-10 Ideal Industries Lighting Llc Lens for preferential-side distribution
US10468566B2 (en) 2017-04-10 2019-11-05 Ideal Industries Lighting Llc Hybrid lens for controlled light distribution
WO2020146879A1 (fr) * 2019-01-11 2020-07-16 Valeo North America, Inc. Illuminateur ir à motif de rayonnement asymétrique
EP3855219A1 (fr) * 2020-01-21 2021-07-28 Focuslight Technologies Inc. Dispositif de diffuseur
AT17210U1 (de) * 2015-02-12 2021-09-15 Zumtobel Lighting Gmbh Optisches Element zur Beeinflussung der Lichtabgabe von Leuchtmitteln
US20230213777A1 (en) * 2020-04-30 2023-07-06 Hasco Vision Technology Co., Ltd. Lens unit, optical lens, illumination module, vehicle light, and vehicle

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003512727A (ja) * 1999-10-18 2003-04-02 オブシェストボ エス オグラノチェノイ オトヴェツトヴェノスチウ “コルヴェト−ライツ” 発光ダイオード
RU2202731C2 (ru) * 2000-12-13 2003-04-20 Ооо Нпц "Оптэл" Световой прибор на светодиодах
DE102004039936A1 (de) * 2004-08-17 2006-02-23 Hentze-Lissotschenko Patentverwaltungs Gmbh & Co. Kg Vorrichtung zur Homogenisierung von Licht sowie Verfahren zur Herstellung der Vorrichtung
WO2006130126A1 (fr) * 2005-06-03 2006-12-07 Sergey Leonidovich Yurko Procede de generation d'images et variantes
US7618163B2 (en) * 2007-04-02 2009-11-17 Ruud Lighting, Inc. Light-directing LED apparatus
RU2435227C1 (ru) * 2010-03-25 2011-11-27 Федеральное государственное образовательное учреждение высшего профессионального образования "Военный авиационный инженерный университет" (г. Воронеж) Министерства обороны Российский Федерации Светофор
JP6936733B2 (ja) * 2015-04-14 2021-09-22 シグニファイ ホールディング ビー ヴィＳｉｇｎｉｆｙ Ｈｏｌｄｉｎｇ Ｂ．Ｖ． 前方投影非対称光学設計
RU2676819C2 (ru) * 2016-12-12 2019-01-11 Сергей Яковлевич Самохвалов Оптоволоконное осветительное устройство с оптическим способом слежения неподвижного концентратора за солнцем
US10883689B2 (en) * 2016-12-22 2021-01-05 Honda Motor Co., Ltd. Vehicular headlamp
CN209484494U (zh) * 2017-01-25 2019-10-11 莱迪尔公司 改变光分布的光学装置、照明器材和系统
RU2659319C1 (ru) * 2017-08-15 2018-06-29 Сергей Яковлевич Самохвалов Неподвижный концентратор солнечного излучения с оптическим способом наведения
RU2674263C1 (ru) * 2017-10-27 2018-12-06 Акционерное общество "Научно-исследовательский институт телевидения" Осветитель светодиодный
RU2670360C1 (ru) * 2017-11-13 2018-10-22 Сергей Яковлевич Самохвалов Неподвижный каскадный линзовый концентратор солнечного излучения с оптическим способом наведения

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567551A (en) 1984-02-27 1986-01-28 Automation Gages, Inc. Multi-directional surface illuminator
US5353211A (en) 1993-07-20 1994-10-04 Merko Andrew V Light modifier
US5365418A (en) 1990-05-11 1994-11-15 Commonwealth Scientific And Industrial Research Organisation Traffic light

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1494025A1 (ru) * 1986-02-26 1989-07-15 Ф.О. Пастернак, Б.И. Бруневский и И.А. Мороз Секци светофора
SU1539817A1 (ru) * 1987-01-19 1990-01-30 Научно-исследовательский и экспериментальный институт автомобильного электрооборудования и автоприборов Светосигнальный прибор направленного действи
RU2022368C1 (ru) * 1988-10-03 1994-10-30 Валерий Ибрагимович Балакишеев Оптический элемент
ATA174989A (de) * 1989-07-20 1999-06-15 Zelisko Josef Elektro Masch Signalanordnung mit einem strahler
RU2010339C1 (ru) * 1990-06-20 1994-03-30 Леонид Константинович Павлушков Секция светофора
JPH06317764A (ja) * 1993-04-27 1994-11-15 Olympus Optical Co Ltd 光学的ローパスフィルター
US5636057A (en) * 1995-02-10 1997-06-03 Ecolux Inc. Prismatic toroidal lens and traffic signal light using this lens
WO1997026483A1 (fr) * 1996-01-17 1997-07-24 Dialight Corporation Ensemble lampe a eclairage par del

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4567551A (en) 1984-02-27 1986-01-28 Automation Gages, Inc. Multi-directional surface illuminator
US5365418A (en) 1990-05-11 1994-11-15 Commonwealth Scientific And Industrial Research Organisation Traffic light
US5353211A (en) 1993-07-20 1994-10-04 Merko Andrew V Light modifier

Cited By (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6554451B1 (en) 1999-08-27 2003-04-29 Lumileds Lighting U.S., Llc Luminaire, optical element and method of illuminating an object
WO2001016524A1 (fr) * 1999-08-27 2001-03-08 Lumileds Lighting B.V. Luminaire, element optique et procede d'eclairage d'un objet
WO2001040706A1 (fr) * 1999-11-29 2001-06-07 Koninklijke Philips Electronics N.V. Luminaire
CN100380045C (zh) * 1999-11-29 2008-04-09 皇家菲利浦电子有限公司 照明设备和用于该照明设备中的光学元件
EP1107210A3 (fr) * 1999-12-09 2006-04-19 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Emetteur de signaux à diodes électroluminescentes avec plusieurs zones de diodes
EP1146572A3 (fr) * 2000-03-14 2005-03-23 Toyoda Gosei Co., Ltd. Dispositif de source lumineuse
EP1146572A2 (fr) * 2000-03-14 2001-10-17 Toyoda Gosei Co., Ltd. Dispositif de source lumineuse
US6953265B2 (en) 2000-03-14 2005-10-11 Toyoda Gosei Co., Ltd. Light source device
WO2001081955A3 (fr) * 2000-04-20 2002-11-28 Raytheon Co Optique de conformation pour plaques lumineuses a diodes
US6462891B1 (en) 2000-04-20 2002-10-08 Raytheon Company Shaping optic for diode light sheets
US6940660B2 (en) 2000-10-17 2005-09-06 Osram Gmbh Optical device
WO2002033449A3 (fr) * 2000-10-17 2002-11-07 Osram Opto Semiconductors Gmbh Dispositif optique
US6963450B2 (en) 2000-12-06 2005-11-08 Dai Nippon Printing Co., Ltd. Fresnel lens and die for the same
WO2002046806A3 (fr) * 2000-12-06 2002-08-15 Dainippon Printing Co Ltd Lentille de fresnel et matrice pour celle-ci
WO2004001459A1 (fr) * 2002-06-21 2003-12-31 Stührenberg GmbH Elektrobau-Signaltechnik Optique de transmission de signaux comportant plusieurs sources lumineuses
GB2407149B (en) * 2003-10-15 2006-10-18 Ju-Yuan You Lamp assembly of traffic light
GB2407149A (en) * 2003-10-15 2005-04-20 Ju-Yuan You Lamp assembly of traffic light
WO2005083318A1 (fr) * 2004-02-26 2005-09-09 Tir Systems Ltd. Appareil pour former un motif de faisceaux lumineux asymetriques
EP1718899A1 (fr) * 2004-02-26 2006-11-08 Tir Systems Ltd. Appareil pour former un motif de faisceaux lumineux asymetriques
EP1718899A4 (fr) * 2004-02-26 2007-04-04 Tir Systems Ltd Appareil pour former un motif de faisceaux lumineux asymetriques
US7652300B2 (en) 2004-02-26 2010-01-26 Koninklijke Philips Electronics, N.V. Apparatus for forming an asymmetric illumination beam pattern
EP1574892A3 (fr) * 2004-03-10 2006-08-16 Sumitomo Electric Industries, Ltd. Système optique pour homogénéiser des faisceaux lumineux avec un élément optique diffractif
EP1574892A2 (fr) * 2004-03-10 2005-09-14 Sumitomo Electric Industries, Ltd. Système optique pour homogénéiser des faisceaux lumineux avec un élément optique diffractif
WO2006068264A2 (fr) * 2004-12-21 2006-06-29 Sharp Kabushiki Kaisha Dispositif optique et source lumineuse
WO2006068264A3 (fr) * 2004-12-21 2006-11-09 Sharp Kk Dispositif optique et source lumineuse
US7817909B2 (en) 2004-12-21 2010-10-19 Sharp Kabushiki Kaisha Optical device and light source
US7584534B2 (en) 2005-01-10 2009-09-08 Perceptron, Inc. Remote inspection device
US8218074B2 (en) 2005-01-10 2012-07-10 Perceptron, Inc. Remote inspection device
DE102005031710A1 (de) * 2005-07-05 2007-01-11 Sick Ag Optoelektronischer Sensor
DE102005031710B4 (de) * 2005-07-05 2014-12-24 Sick Ag Optoelektronischer Sensor
US7427743B2 (en) 2005-07-05 2008-09-23 Sick Ag Optoelectronic sensor
EP1945007A1 (fr) * 2007-01-11 2008-07-16 Schreder Procédé d'optimisation de débit de dispositifs d'éclairage LED
US8177380B2 (en) 2007-08-09 2012-05-15 Sharp Kabushiki Kaisha Light emitting device and lighting device having the same
WO2009053904A3 (fr) * 2007-10-25 2009-08-06 Koninkl Philips Electronics Nv Panneau d'éclairage et procédé de mise à disposition d'un tel panneau d'éclairage
WO2009053904A2 (fr) * 2007-10-25 2009-04-30 Koninklijke Philips Electronics N.V. Panneau d'éclairage et procédé de mise à disposition d'un tel panneau d'éclairage
US8132944B2 (en) 2008-05-23 2012-03-13 Ruud Lighting, Inc. Recessed LED lighting fixture
US9657918B2 (en) 2008-05-23 2017-05-23 Cree, Inc. Light fixture with wide-angle light distribution
US9476570B2 (en) 2008-05-23 2016-10-25 Cree, Inc. Lens with controlled backlight management
WO2010010494A1 (fr) * 2008-07-24 2010-01-28 Koninklijke Philips Electronics N.V. Luminaire doté de plusieurs unités d’éclairage
US9223140B2 (en) 2008-12-17 2015-12-29 Ricoh Company, Ltd. Coupling lens, illuminating device, and electronic device
US9255686B2 (en) 2009-05-29 2016-02-09 Cree, Inc. Multi-lens LED-array optic system
US9689552B2 (en) 2009-05-29 2017-06-27 Cree, Inc. Multi-lens LED-array optic system
EP2357399A1 (fr) * 2010-02-16 2011-08-17 Koito Manufacturing Co., Ltd. Unité optique
WO2012101096A3 (fr) * 2011-01-28 2012-10-04 Osram Ag Dispositif lumineux
US20130201669A1 (en) * 2012-02-03 2013-08-08 Taiwan Semiconductor Manufacturing Company, Ltd Led illumination apparatus with improved output uniformity
US9541257B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for primarily-elongate light distribution
US10408429B2 (en) 2012-02-29 2019-09-10 Ideal Industries Lighting Llc Lens for preferential-side distribution
US9541258B2 (en) 2012-02-29 2017-01-10 Cree, Inc. Lens for wide lateral-angle distribution
EP2870494A4 (fr) * 2012-07-03 2016-08-03 3M Innovative Properties Co Articles à films décoratifs utilisant des films de lentille de fresnel
JP2015524572A (ja) * 2012-07-03 2015-08-24 スリーエム イノベイティブ プロパティズ カンパニー フレネルレンズフィルムを用いた装飾フィルム物品
WO2014007957A2 (fr) 2012-07-03 2014-01-09 3M Innovative Properties Company Articles à films décoratifs utilisant des films de lentille de fresnel
DE102013204476A1 (de) * 2013-03-14 2014-09-18 Osram Opto Semiconductors Gmbh Optisches Element und optoelektronisches Bauelement mit optischem Element
US9874663B2 (en) 2013-03-14 2018-01-23 Osram Opto Semiconductors Gmbh Optical element and optoelectronic component comprising optical element
DE102013204476B4 (de) 2013-03-14 2022-07-07 OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung Optisches Element und optoelektronisches Bauelement mit optischem Element
US9523479B2 (en) 2014-01-03 2016-12-20 Cree, Inc. LED lens
CN106030347A (zh) * 2014-01-23 2016-10-12 飞利浦灯具控股公司 光漫射器、使用该光漫射器的led灯布置以及制造方法
WO2015110286A1 (fr) * 2014-01-23 2015-07-30 Koninklijke Philips N.V. Diffuseur de lumière, agencement de lampes à diodes électroluminescentes utilisant celui-ci, et procédé de fabrication
US10222025B2 (en) 2014-01-23 2019-03-05 Philips Lighting Holding B.V. Light diffuser, LED lamp arrangement using the same, and manufacturing method
RU2698805C2 (ru) * 2014-09-30 2019-08-30 Зе Боинг Компани Осветительные системы, выполненные на основе матрицы
US20160091173A1 (en) * 2014-09-30 2016-03-31 The Boeing Company Array-based lighting systems and methods of manufacturing
US10222029B2 (en) * 2014-09-30 2019-03-05 The Boeing Company Array-based lighting systems and methods of manufacturing
AT17210U1 (de) * 2015-02-12 2021-09-15 Zumtobel Lighting Gmbh Optisches Element zur Beeinflussung der Lichtabgabe von Leuchtmitteln
US10468566B2 (en) 2017-04-10 2019-11-05 Ideal Industries Lighting Llc Hybrid lens for controlled light distribution
WO2020146879A1 (fr) * 2019-01-11 2020-07-16 Valeo North America, Inc. Illuminateur ir à motif de rayonnement asymétrique
US11274800B2 (en) 2019-01-11 2022-03-15 Valeo North America, Inc. IR illuminator with asymetric radiation pattern
US12181114B2 (en) 2019-01-11 2024-12-31 Valeo North America, Inc. IR illuminator with asymetric radiation pattern
EP3855219A1 (fr) * 2020-01-21 2021-07-28 Focuslight Technologies Inc. Dispositif de diffuseur
CN114503013A (zh) * 2020-01-21 2022-05-13 西安炬光科技股份有限公司 扩散匀化装置
US20230213777A1 (en) * 2020-04-30 2023-07-06 Hasco Vision Technology Co., Ltd. Lens unit, optical lens, illumination module, vehicle light, and vehicle
EP4130853A4 (fr) * 2020-04-30 2023-10-04 Hasco Vision Technology Co., Ltd. Unité de lentille, lentille optique, module d'éclairage, lumière de véhicule et véhicule

Also Published As

Publication number Publication date
AU3347699A (en) 1999-10-18
WO1999050596A3 (fr) 1999-12-09
RU2137978C1 (ru) 1999-09-20

Similar Documents

Publication Publication Date Title
WO1999050596A2 (fr) Dispositif d'eclairage generant un faisceau lumineux non symetrique, reseau de verres optiques et verre optique
US7008079B2 (en) Composite reflecting surface for linear LED array
RU2456503C2 (ru) Формирователь светового луча
US6227685B1 (en) Electronic wide angle lighting device
US7083313B2 (en) Side-emitting collimator
US5174649A (en) Led lamp including refractive lens element
US5894196A (en) Angled elliptical axial lighting device
US5636057A (en) Prismatic toroidal lens and traffic signal light using this lens
US8899782B2 (en) Lighting system and light source unit for such a system
US5894195A (en) Elliptical axial lighting device
US6924943B2 (en) Asymmetric TIR lenses producing off-axis beams
US5323302A (en) Illumination device
US6623150B2 (en) Light-emitting diode combination marker/clearance lamp for trucks and trailers
KR20190040269A (ko) 적어도 2개의 광 분배들을 발생시키기 위한 자동차 헤드라이트용 조명 유닛
US20120250331A1 (en) Optical system for generating a composite light beam with wide angular opening
US6900437B2 (en) Color corrected laser illumination system for night vision applications
CA2826298C (fr) Dispositif optique a del
US9494295B2 (en) Ring light module
JP7650158B2 (ja) 発光鋲及び発光鋲システム
US10641450B2 (en) Optical lighting device of vehicles
US6257742B1 (en) Lighting means having light emitting diodes
JP2006092485A (ja) 信号灯
US7121685B2 (en) Color-corrected laser illumination system for night vision applications
EP0641967B1 (fr) Dispositif d'éclairage, en particulier pour véhicules automobiles
JP2518236B2 (ja) 光源装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载