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WO2007043135A1 - Écran à micromiroir - Google Patents

Écran à micromiroir Download PDF

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Publication number
WO2007043135A1
WO2007043135A1 PCT/JP2005/018344 JP2005018344W WO2007043135A1 WO 2007043135 A1 WO2007043135 A1 WO 2007043135A1 JP 2005018344 W JP2005018344 W JP 2005018344W WO 2007043135 A1 WO2007043135 A1 WO 2007043135A1
Authority
WO
WIPO (PCT)
Prior art keywords
micromirror
light
screen
screen according
micromirrors
Prior art date
Application number
PCT/JP2005/018344
Other languages
English (en)
Japanese (ja)
Inventor
Kazunori Miwa
Original Assignee
Kazunori Miwa
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 Kazunori Miwa filed Critical Kazunori Miwa
Priority to PCT/JP2005/018344 priority Critical patent/WO2007043135A1/fr
Publication of WO2007043135A1 publication Critical patent/WO2007043135A1/fr

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Definitions

  • the present invention relates to a reflective or transmissive projection screen with good visibility even in the outdoors or in a bright room where the display contrast is extremely high under external light.
  • projection screens There are two types of projection screens: a front projection screen (reflection type) that emits image light from the viewer side, and a rear projection screen (transmission type) that emits image light from the opposite side of the viewer. Both types have a structure in which the image light from the projector is scattered and displayed by fine irregularities on the screen surface and diffusing material, so external light other than the image light is also scattered at the same time, resulting in a decrease in display contrast. There are structural problems such as ease.
  • Reflection-type projection screens include a mat type having an irregular surface and a bead type in which minute beads are spread to give retroreflective properties. These reflection type projection screens display the image with specular reflection component or retroreflective component and diffuse reflection component that reflects the image light from the projector on the screen surface, but if there are too many specular reflection components and retroreflective components Although it is easy to maintain contrast with external light, the viewing angle range is limited and hot spots are likely to occur in the image. On the other hand, when the diffuse reflection component is increased, the gain is low and the contrast with respect to the external light is maintained, but a good display quality can be realized.
  • a transmissive projection screen collimates the light flux from a projector with a Fresnel lens, expands the horizontal viewing angle characteristics with a lenticular lens, and further disperses a diffusing material in the lens medium to achieve a vertical viewing angle.
  • the transmissive projection screen having such a structure has a problem that the contrast of the display is lowered due to scattering of external light by the diffusing material.
  • the viewing angle range in the vertical direction by the diffusing material is about ⁇ 20 to 30 ° at the maximum, and there is a problem that the characteristics are clearly inferior in the horizontal direction.
  • concentration of the diffusing material is increased to improve the viewing angle characteristics, There is a problem in that the light extraction efficiency is lowered by diffusing light widely and increasing the components exceeding the critical angle in the lens medium and confining them in the medium.
  • the projector displays the image by diffusing the projected image light
  • the off-brightness of the display is increased by the diffuse reflection of the external light, resulting in a contrast ratio. (ONZOFF ratio) decreases.
  • the diffuse reflectance on the display surface is :
  • the display brightness is B (cdZm 2 )
  • the illuminance of outside light is L (lux)
  • the contrast ratio C on the screen under outside light is B (cdZm 2 )
  • the display brightness of the non-display portion is assumed to be zero.
  • the diffuse reflectance r varies depending on the external light incident angle and the direction of the observer.
  • surface reflection (regular reflection) on the display surface and diffuse reflection are in a trade-off relationship. Roughening the surface reduces specular reflection but increases diffuse reflection.
  • a conventional reflective projection screen uses, for example, white salt vinyl, aluminum, cloth or the like as a screen base material, and a white ink containing a pearl pigment or an aluminum paste pigment is printed thereon as a reflective layer.
  • Reflective screens are used that are coated and finely textured as required.
  • the light emitted from the bright part in the screen is reflected on the wall surface etc. and is incident again as external light, which increases the brightness of the dark part and lowers the contrast. Therefore, it is common to project with the room lighting dimmed.
  • the former method is a reflective type that improves the contrast ratio by forming a light-absorbing layer such as halftone dots, honeycombs, stripes, and grain with black ink on the display surface by printing.
  • a screen has been proposed.
  • Patent Document 1 a louver composed of a light-shielding layer and a light diffusion layer is repeatedly arranged to diffuse and reflect the image light of the projection from below to the front of the screen, while outside light from above is A structure that is absorbed by the light shielding layer is proposed.
  • Patent Document 2 describes a scan. By providing a reflective layer that selectively reflects the wavelength of the image light on the clean surface, the contrast to external light is improved.
  • a bead screen has been put into practical use, in which fine beads are spread over the entire display surface and the direction of the reflected light is returned to the incident direction so that it does not enter the viewer's eyes.
  • a reflection type screen provided with a bead screen and a light absorption layer has also been proposed.
  • a metal reflective layer although the viewing angle range is narrowed, a proposal has been made to improve the contrast and brightness by lowering the diffuse reflectance and increasing the regular reflectance.
  • Patent Document 1 Japanese Patent Laid-Open No. 51-44186
  • Patent Document 2 Japanese Patent Laid-Open No. 2003-344951
  • washout which is an inseparable problem for self-luminous display devices.
  • the display is originally due to light scattering, so this problem is large. Not only the visibility is deteriorated, but also an excessive light source output is required, and the viewpoint of energy saving is solved. Was desired.
  • the light incident / reflection profile of the micro mirror composed of minute curved mirrors does not reflect the external light from the main external light incident angle within the light distribution range of the screen, and at least the light flux from the light source It has been clarified that it is possible to solve the above problems by realizing a micromirror screen that also has a micromirror group power set so as to satisfy the conditions for reflection within the light distribution range of the screen.
  • the invention's effect is not reflect the external light from the main external light incident angle within the light distribution range of the screen, and at least the light flux from the light source
  • projection screen with good visibility without reducing display contrast under strong external light even when a light source having a relatively low output is used.
  • Such projection screens can be applied to the power of reflection-type front projection screens and transmission-type rear projection screens, super-power-saving picto-sign display devices and traffic signals.
  • FIG. 1 is a layout view of a reflective micromirror screen. (Example 1)
  • FIG. 2 is a layout diagram of micromirrors in the vertical direction.
  • FIG. 3 is a layout diagram of micromirrors in the horizontal direction.
  • FIG. 4 is a cross-sectional view of a continuously formed micromirror array.
  • FIG. 5 is a cross-sectional view of a micromirror array embedded in a transparent body.
  • FIG. 6 is a sectional view of a see-through screen.
  • FIG. 7 is a cross-sectional view of a reflective curved screen.
  • FIG. 8 is a cross-sectional view of a reflective screen using a Fresnel lens.
  • FIG. 9 is a perspective view of a reflective screen on which strip-shaped micromirror arrays are arranged.
  • FIG. 10 is a perspective view of a reflective screen in which sub-micromirror rows are arranged.
  • FIG. 11 is a layout diagram of a transmission type micromirror screen. (Example 2)
  • FIG. 12 is a cross-sectional view of a transmission type macro mirror screen.
  • FIG. 13 is a sectional view of a transmissive curved screen.
  • FIG. 14 is a cross-sectional view for explaining a leakage light preventing structure.
  • FIG. 15 is a perspective view of a transmission type microscreen.
  • FIG. 16 is a perspective view of a display body formed by a set of micromirror screens. (Example 3)
  • image light can be distributed within a predetermined range, and external light can be efficiently absorbed or guided outside the visual range. Can be solved.
  • FIG. 1 is a layout view of a first embodiment according to the present invention.
  • the arrangement of the reflective micromirror screen 1 and projector 2, observer 3, and external light source 4 is shown.
  • the incident angle range in the vertical direction from the projector 2 with respect to the reflective micromirror screen 1 is a to a, and the viewing range is j8 to ⁇ .
  • the outside light incident angle range is ⁇ to ⁇ .
  • Micromi In order to reflect the image light of the incident angle from the projector to the viewing range j8 to ⁇ by the micromirror arranged at the farthest point 5, the micromirror screen 1 is constituted by a set of mirrors. Is normal ( ⁇ + ⁇ ) ⁇ 2 to + j8)
  • the image light can be evenly distributed in the set observation range.
  • the center axis of the micromirror is arranged in the middle of the light distribution center ( ⁇ + ⁇ ) 2 of the screen and the light source direction ⁇ of the micromirror force.
  • the micromirror method is used.
  • the center axis of the light is the light distribution center of the screen (j8 + ⁇ ) ⁇ 2 and the light source from this micromirror
  • the farthest point force can be simply arranged.
  • Micromirrors having the same curved surface can be arranged up to the nearest point.
  • the image light can be distributed evenly within the set observation range.
  • FIG. 2 shows a vertical arrangement of the micromirrors 7 of the reflective micromirror screen.
  • the space between the upper and lower micromirrors is arranged so that the image light irradiates the micromirrors at the shortest point of the screen.
  • the minimum distance between the micromirrors is ⁇ when the upper end of the micromirror is looking up at the lower end of the adjacent micromirror. This time outside
  • the image light source is also unable to reflect the image light to the observer side above j8. Same profile in vertical direction When arraying micromirrors with a mirror, it is necessary to set the distance between the micromirrors wider in order to effectively enter the micromirror at the farthest point.
  • the image light source is arranged in an oblique direction with respect to the micro screen, and all the microphone mirrors are positioned at positions where the image light incident on the nearest point and the farthest point where the image light reaches at least the effective part of the micromirror And has a profile that does not overlap the external light irradiation angle range and the visual recognition range at least at the most recent micromirror, so that it can be visually recognized without causing a decrease in contrast due to external light.
  • diffuse reflected light of external light may travel to the observer side due to dirt or distortion of the micromirror.
  • external light reflected by the micromirror may be reflected on the back surface of the micromirror and travel through the transparent body supporting the micromirror, or may be reflected at the support interface and return to the visible range.
  • external light can be absorbed without reflecting to the viewer side by using one surface of the micromirror as a reflective layer and the back surface as an absorption layer. The same effect can be obtained by arranging a light absorption film behind the micromirror group.
  • FIG. 3 is a diagram showing the arrangement of the micromirror groups in the horizontal direction when the projector is placed at the center of the screen for projection.
  • Each micromirror 7 constitutes one unit or less of pixels.
  • a micromirror that satisfies the curvatures in the vertical and horizontal directions can be formed of a part of a spheroid.
  • FIG. 4 shows an example of a micromirror array when a projector is projected at the center of the screen.
  • the above mirror angle It may be constituted by a series of fine wavy concave mirrors and convex mirrors satisfying the degree.
  • a color shift may occur in the projected image.
  • the diffusibility can be improved and the color shift can be reduced by setting the horizontal micromirror pitch to a fraction of the pixel size of the image light. .
  • FIG. 5 is a diagram for explaining the visible range of the group of micromirrors embedded in the transparent body.
  • the image light from the projector 2 enters the micromirror 7 through the interface of the transparent body 8. Further, by adopting a configuration in which the light is reflected and projected by the aspherical reflecting mirror 9, the entire apparatus can be reduced in size.
  • the individual micromirrors constituting the micromirror group can be displayed without affecting the resolution of the image light as long as the size of the image light projected by the projector is one pixel or less.
  • moire occurs when the spatial frequency of the image light and the repetition frequency of the micromirror group are close, so it is necessary to determine the arrangement pitch of the micromirror group in consideration of the upper limit of the spatial frequency of the image light.
  • the micromirror screen which is a group of micromirrors having such a configuration, reflects the image light incident from the image light source to the viewer side, provides good visibility in the viewing range, and allows outside light to be viewed in the viewing range. It is possible to prevent an observer from being reflected by reflecting outside, transmitting through a gap, or absorbing the absorption layer.
  • FIG. 6 is a cross-sectional view of a see-through screen in which a semi-transmissive film 10 is placed behind the micromirror screen 1 so that an image 11 behind the screen can be visually recognized, and an image projected on the screen.
  • a semi-transmissive film 10 is placed behind the micromirror screen 1 so that an image 11 behind the screen can be visually recognized, and an image projected on the screen.
  • the effect of reducing the influence of the background on the light is provided.
  • a device capable of adjusting the transparent state and the non-transparent state instead of the semi-transparent film may be used.
  • FIG. 7 is an example in which the screen is arranged in a curved shape so that the elevation angle of the image light source as seen from the micromirror array force is within a certain range.
  • FIG. 8 shows a configuration in which the image light from the projector 2 is collimated by the Fresnel lens 12 and then incident on the micromirror screen.
  • the optimal light distribution range can be realized with a group of micromirrors with a single profile while keeping the surface flat.
  • the Fresnel lens 11 may be an aspheric lens or an aspheric mirror. It can also be arranged parallel to the screen.
  • FIG. 9 is a perspective view of a micro mirror screen in which a plurality of strip-shaped micro mirror rows 14 each having a micro mirror formed thereon are juxtaposed on a resin base material 13.
  • the micromirror array 14 and the resin base material 13 can be produced by simultaneously molding by a synthetic resin molding method such as an injection molding method or a compression molding method using a resin material in which a black pigment or the like is dispersed as a molding material.
  • the thickness of the macro mirror array is ⁇ ! Form a metal thin film such as Ag film or A1 film of ⁇ 1 ⁇ m.
  • the metal thin film can be formed by electroless partial plating of Ag or vacuum deposition from the oblique direction of A1.
  • a protective film such as transparent resin is formed on the metal thin film thus formed.
  • the micromirror screen manufactured in this way is installed on the wall surface of a building and the screen is obliquely downwardly irradiated with image light from the projector, good visibility can be obtained despite direct sunlight.
  • anatase type titanium oxide or the like in the protective film an antifouling effect can be provided by a photocatalytic reaction.
  • the resin base material 13 with a transparent resin.
  • a light absorption layer can be formed by forming a black layer or the like on the back surface of the metal thin film. Even if a metal thin film is not formed, a certain reflectance can be secured by making the surface roughness of the molded product equivalent to a mirror finish, and it can be used as a micromirror screen.
  • FIG. 10 is a perspective view of a macro mirror stain which also has a force with the main micro mirror 7 and the sub micro mirror 15.
  • the image light from the image light source can be effectively distributed to the observation range regardless of the incident angle.
  • FIG. 11 is a layout view of a second embodiment according to the present invention. This shows the arrangement of the transmissive micromirror stationary 16 and the projector 2, the observer 3, and the external light source 4.
  • the incident angle range in the vertical direction from the projector 2 with respect to the transmission type microphone mouth mirror screen 16 is defined as a;
  • the external light incident angle range is ⁇ to ⁇
  • the design method of the micromirror is basically the same for the transmission type micromirror screen. In other words, the incident angle from the projector is reduced by the micromirror placed at the farthest point 5. In order to reflect the image light of a to the visible range j8 to ⁇ , the normal of the micromirror is ( ⁇
  • the center axis of the micromirror is the light distribution center (j8 + ⁇ ) +2 of the screen and the direction of the light source from this micromirror.
  • the micromirror method is used.
  • the center axis of the light is the light distribution center of the screen (j8 + ⁇ ) ⁇ 2 and the light source from this micromirror
  • a transmissive screen the area from the projection engine (projector) to the back of the screen is usually covered with a light-shielded enclosure, so that the external light irradiation range and the image light irradiation range do not overlap and maintain good visibility. it can. Even if it is not covered with an enclosure, the range in which external light is emitted to the visible range due to the reflection of the macro mirror is extremely limited.
  • FIG. 12 is an example of a cross-sectional view of a transmissive micromirror screen.
  • an arrangement of only the force micromirror 7 composed of the main micromirror 7 and the submicromirror 15 is also possible.
  • the sub-micromirror 15 By arranging the sub-micromirror 15, leakage light from the microscreen can be prevented and display with high luminance can be achieved.
  • Fig. 13 by arranging the screen in a curved shape so that the elevation angle of the image light source seen from a row of micromirrors is in a certain range, the light distribution range can be set effectively and without waste. Can be prevented.
  • FIG. 14 when the micromirror group is embedded in a transparent body, leakage light is prevented by making the incident angle of the leakage light with respect to the emission side interface equal to or greater than the critical angle. Can be stopped.
  • FIG. 15 is a perspective view of a strip-shaped transmissive micromirror screen formed of a transparent resin.
  • the micromirror 7 is formed at the interface of the transparent resin, and the image light incident surface 17 and the light absorption film 18 are also formed at the other interface of the transparent resin.
  • an acrylic or polyester thermosetting or ultraviolet curable resin can be used as the transparent resin. It can also be molded by injection molding or hot pressing using a thermoplastic resin such as polycarbonate.
  • the micromirror part formed at the resin interface can be used as a micromirror by forming a metal thin film by electroless selective plating or vacuum deposition. Moreover, it can be set as a light absorption layer by forming a black film etc. in the back surface of a metal thin film. Even if a metal thin film is not formed, it can be used as a micromirror by total reflection of light at the transparent resin interface.
  • the light absorbing film 18 can be formed by allowing a resin containing black pigment or the like to flow
  • FIG. 16 is a perspective view showing a third embodiment.
  • Reference numeral 19 represents the shape of a set of micromirrors as a display body, here a pictogram.
  • 20 is a white painted plate from the observer side, but the inner surface is a reflecting plate or a light shielding plate.
  • Reference numeral 21 denotes an LED light source, which can select an emission color suitable for display.
  • Reference numeral 22 denotes a housing having a reflecting plate or the like on the inner surface.
  • the internal illumination sign having such a structure can perform display with extremely low power consumption, and can maintain good visibility even under external light.
  • a part of the light emitted from the LED light source 21 is directly incident on the micromirror screen and is distributed to a predetermined viewing range.
  • a part of the light is reflected by the reflecting plate 20 or the reflecting plate on the inner surface of the housing 22 and enters the micromirror screen.
  • a color filter that transmits the light from the LED light source according to the shape of the display body can be placed side by side to function as a reflective display device in the daytime.
  • a display body represented by a set of micromirrors is layered, or a reflective micromirror, a transmission micromirror, and a single or multiple light sources are combined to produce a multicolor display body or selective light emission. It is also possible to make a display for performing. It can also be used for power-saving traffic signal lights with strictly defined light distribution ranges. Industrial applicability

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

La présente invention permet d'améliorer un écran de projection de type à réflexion et de type à transmission. En empêchant la réflexion d'une lumière externe appliquée à un écran de projection vers un observateur dans un champ visuel, il est possible d'améliorer un contraste d'affichage sous la lumière externe. Un micromiroir conçu de manière optimale est disposé de façon répétée sur un écran de projection afin de disposer efficacement une lumière vidéo dans un champ visuel prédéterminé et d'absorber ou introduire une lumière externe en dehors du champ visuel, améliorant ainsi la visibilité sous la lumière externe et réduisant la consommation d'énergie. Il est possible de fabriquer, à bas coût, un écran de projection de type à réflexion et de type à transmission visible sous la lumière externe. Ceci peut être appliqué à un affichage nécessitant une visibilité sous la lumière externe et économisant la consommation d'énergie.
PCT/JP2005/018344 2005-10-04 2005-10-04 Écran à micromiroir WO2007043135A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/018344 WO2007043135A1 (fr) 2005-10-04 2005-10-04 Écran à micromiroir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2005/018344 WO2007043135A1 (fr) 2005-10-04 2005-10-04 Écran à micromiroir

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WO2007043135A1 true WO2007043135A1 (fr) 2007-04-19

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PCT/JP2005/018344 WO2007043135A1 (fr) 2005-10-04 2005-10-04 Écran à micromiroir

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012132931A (ja) * 2012-02-16 2012-07-12 Yuichi Hirai レーザー受光器
WO2023199926A1 (fr) * 2022-04-15 2023-10-19 デクセリアルズ株式会社 Écran, procédé de fabrication associé et puce

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616118A (en) * 1979-07-18 1981-02-16 Mitsubishi Electric Corp Reflective screen
JPH01209436A (ja) * 1988-02-18 1989-08-23 Kawasaki Heavy Ind Ltd 画像投影用スクリーン及びその製造方法
JPH03107992A (ja) * 1989-09-20 1991-05-08 Tradebest Internatl Corp 照明可能表示装置
JPH03189633A (ja) * 1989-12-20 1991-08-19 Hitachi Ltd 反射形投写スクリーン
JPH04240838A (ja) * 1991-01-25 1992-08-28 Victor Co Of Japan Ltd 反射型スクリーン
JPH04287033A (ja) * 1991-03-15 1992-10-12 Seiko Epson Corp 背面投射型表示装置
JPH06332074A (ja) * 1993-05-20 1994-12-02 Fujitsu General Ltd 映写スクリーン
JPH0843949A (ja) * 1994-08-02 1996-02-16 Matsushita Electric Ind Co Ltd 透過型スクリーン
JP2003029344A (ja) * 2001-07-13 2003-01-29 Arisawa Mfg Co Ltd スクリーン
JP2004505290A (ja) * 2000-07-25 2004-02-19 スクラム　テクノロジーズ　インコーポレイテッド 黒色鋸歯状光学パネル
JP2004078024A (ja) * 2002-08-21 2004-03-11 Nec Viewtechnology Ltd 反射型スクリーン
JP2005107011A (ja) * 2003-09-29 2005-04-21 Daicel Chem Ind Ltd 反射スクリーン、それを用いた表示方法および表示装置
JP2005292679A (ja) * 2004-04-05 2005-10-20 Aterio Design Kk マイクロミラースクリーン

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616118A (en) * 1979-07-18 1981-02-16 Mitsubishi Electric Corp Reflective screen
JPH01209436A (ja) * 1988-02-18 1989-08-23 Kawasaki Heavy Ind Ltd 画像投影用スクリーン及びその製造方法
JPH03107992A (ja) * 1989-09-20 1991-05-08 Tradebest Internatl Corp 照明可能表示装置
JPH03189633A (ja) * 1989-12-20 1991-08-19 Hitachi Ltd 反射形投写スクリーン
JPH04240838A (ja) * 1991-01-25 1992-08-28 Victor Co Of Japan Ltd 反射型スクリーン
JPH04287033A (ja) * 1991-03-15 1992-10-12 Seiko Epson Corp 背面投射型表示装置
JPH06332074A (ja) * 1993-05-20 1994-12-02 Fujitsu General Ltd 映写スクリーン
JPH0843949A (ja) * 1994-08-02 1996-02-16 Matsushita Electric Ind Co Ltd 透過型スクリーン
JP2004505290A (ja) * 2000-07-25 2004-02-19 スクラム　テクノロジーズ　インコーポレイテッド 黒色鋸歯状光学パネル
JP2003029344A (ja) * 2001-07-13 2003-01-29 Arisawa Mfg Co Ltd スクリーン
JP2004078024A (ja) * 2002-08-21 2004-03-11 Nec Viewtechnology Ltd 反射型スクリーン
JP2005107011A (ja) * 2003-09-29 2005-04-21 Daicel Chem Ind Ltd 反射スクリーン、それを用いた表示方法および表示装置
JP2005292679A (ja) * 2004-04-05 2005-10-20 Aterio Design Kk マイクロミラースクリーン

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012132931A (ja) * 2012-02-16 2012-07-12 Yuichi Hirai レーザー受光器
WO2023199926A1 (fr) * 2022-04-15 2023-10-19 デクセリアルズ株式会社 Écran, procédé de fabrication associé et puce

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