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WO2018135451A1 - Dispositif d'imagerie - Google Patents

Dispositif d'imagerie Download PDF

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Publication number
WO2018135451A1
WO2018135451A1 PCT/JP2018/000897 JP2018000897W WO2018135451A1 WO 2018135451 A1 WO2018135451 A1 WO 2018135451A1 JP 2018000897 W JP2018000897 W JP 2018000897W WO 2018135451 A1 WO2018135451 A1 WO 2018135451A1
Authority
WO
WIPO (PCT)
Prior art keywords
holder
lens frame
optical axis
adjustment ring
axis direction
Prior art date
Application number
PCT/JP2018/000897
Other languages
English (en)
Japanese (ja)
Inventor
優太 中村
Original Assignee
日本電産コパル株式会社
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 日本電産コパル株式会社 filed Critical 日本電産コパル株式会社
Publication of WO2018135451A1 publication Critical patent/WO2018135451A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • 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
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof

Definitions

  • One embodiment of the present invention relates to an imaging device or the like.
  • an imaging apparatus such as a camera having an imaging element, a lens frame, and a holder
  • the conventional imaging apparatus employs a configuration in which, for example, a biasing member is used and adhesive fixing is performed while removing a backlash of a screw.
  • a biasing member is used and adhesive fixing is performed while removing a backlash of a screw.
  • One means of the present invention is to A lens frame (3, 31) for holding the lens; Holders (2, 21) for holding the lens frame; An adjustment ring (1, 11) that fits with one of the lens frame and the holder and contacts the other of the lens frame and the holder in the optical axis direction; An imaging device.
  • the imaging apparatus having the above-described configuration, it is possible to adjust the position of the lens without using an adhesive or while reducing the amount of adhesive used.
  • the lens can be more firmly fixed to the holder than in the past. Also, the focus can be adjusted relatively easily.
  • the adjustment ring is screwed to one of the lens frame and the holder.
  • an imaging apparatus capable of adjusting the focus of the lens can be configured with a relatively simple configuration.
  • the adjustment ring is screw-fitted to one of the lens frame and the holder so as to be movable in the optical axis direction.
  • the position of the lens frame and the holder can be stably held by screw fitting and contact with the adjustment ring interposed.
  • the adjustment ring is positioned in front of the holder in the optical axis direction.
  • the imaging apparatus having the above configuration, it is possible to make it easy to perform focus adjustment by the adjustment ring from the front in the optical axis direction.
  • No adhesive is used to fix the lens frame, the holder, and the adjustment ring to each other.
  • the imaging apparatus having the above configuration, it is possible to provide a configuration capable of repeatedly performing focus adjustment while having the above-described features. In addition, it can be assembled in a relatively short time and at a low cost.
  • FIG. 1 is an external perspective view of an imaging apparatus according to Embodiment 1.
  • FIG. FIG. 3 is an exploded perspective view of the imaging apparatus according to the first embodiment.
  • FIG. 3 is a cross-sectional view of the imaging apparatus according to the first embodiment.
  • FIG. 6 is an external perspective view of an imaging apparatus according to Embodiment 2.
  • FIG. 4 is an exploded perspective view of an imaging apparatus according to Embodiment 2.
  • FIG. 6 is a cross-sectional view of an imaging apparatus according to Embodiment 2.
  • the imaging device includes an adjustment ring and can adjust the position of the lens without using an adhesive.
  • FIG. 1 is an external perspective view of the imaging apparatus according to the present embodiment.
  • FIG. 2 is an exploded perspective view of the imaging apparatus.
  • FIG. 3 is a cross-sectional view of the imaging apparatus.
  • the center position of the lens and the center position of the light incident on the image sensor is referred to as an “optical axis”.
  • An imaging target located on the opposite side of the imaging element from the lens is referred to as a “subject”.
  • the direction in which the subject is located with respect to the lens may be referred to as “front in the optical axis direction” or “subject side”.
  • the direction in which the image sensor is located with respect to the lens may be referred to as “backward in the optical axis direction” or “image sensor side”.
  • the imaging apparatus includes an adjustment ring 1, a holder 2, a lens frame 3, and a substrate 4.
  • the holder 2 and the substrate 4 are connected by connecting screws 5a and 5b.
  • the holder 2 holds the adjustment ring 1 and the lens frame 3.
  • the holder 2 is connected to the substrate 4 by connecting screws 5a and 5b.
  • the holder 2 has a cylindrical opening centered on the optical axis, and the adjustment ring 1 and the lens frame 3 are inserted into the opening from the front to the rear in the optical axis direction.
  • threads are formed at positions B and C inside the opening.
  • the screw thread of the holder 2 and the screw thread on the radially outer side of the adjustment ring 1 are fitted.
  • the thread of the holder 2 and the thread on the outer side in the radial direction of the lens frame 3 are fitted.
  • the holder 2 further has a screw hole (not shown) into which the connecting screws 5a and 5b are inserted.
  • the holder 2 has a surface orthogonal to the optical axis on the rear side in the optical axis direction, and contacts the substrate 4 on this surface.
  • the holder 2 and the substrate 4 are screwed together by connecting screws 5a and 5b.
  • the lens frame 3 is a cylindrical member that extends in the optical axis direction.
  • the lens frame 3 holds an optical member including one or more lenses.
  • the optical member held by the lens frame 3 includes a lens, a spacer, a caliber plate, an optical filter (all not shown), and the like.
  • the lens is made of a transparent material such as glass or plastic, and transmits light from the front in the optical axis direction while refracting light from the front in the optical axis direction.
  • the spacer is a disk-shaped member having an appropriate thickness in the optical axis direction, and adjusts the position of each lens in the optical axis direction.
  • the spacer has an opening at the center including the optical axis.
  • the aperture plate determines the outermost position of the light passing therethrough.
  • the optical filter suppresses or blocks light having a predetermined wavelength.
  • the optical filter includes, for example, an infrared cut filter that suppresses passing infrared rays. The number of these optical members can be arbitrarily changed.
  • the lens frame 3 has a thread at a radially outer position (position C in FIG. 3) and is fitted to the thread of the holder 2. That is, the lens frame 3 and the holder 2 are screwed together. By rotating the lens frame 3 with respect to the holder 2, the screwing amount changes, and the position of the lens frame 3 with respect to the holder 2 in the optical axis direction changes.
  • the lens frame 3 has a surface orthogonal to the optical axis at the position D in FIG. 3 on the front side in the optical axis direction, and is in contact with the adjustment ring 1 on this surface.
  • the adjustment ring 1 is disposed on the radially outer side of the lens frame 3 and on the radially inner side of the holder 2.
  • the adjustment ring 1 is disposed so as to be separated from the radially outer side of the lens frame 3.
  • the adjustment ring 1 has a screw thread at a position B in FIG. 3, which is a radially outer position.
  • the adjustment ring 1 is engaged with the thread on the radially inner side of the holder 2 at the position B.
  • the adjustment ring 1 has a surface orthogonal to the optical axis at the position D in FIG. 3 on the rear side in the optical axis direction, and this surface is in contact with the surface of the lens frame 3.
  • the substrate 4 is mounted with the image sensor 4a and other electronic components.
  • the image pickup device 4a is a photoelectric conversion device that receives light transmitted through an optical member including a lens held by the lens frame 3, converts the light into an electric signal, and outputs the electric signal, and is, for example, a C-MOS sensor or a CCD.
  • the substrate 4 is connected to the holder 2 in a fixed state. Note that the imaging element 4a may be replaced with another imaging unit.
  • the focus can be adjusted by adjusting the position of the lens frame 3 relative to the holder 2 in the optical axis direction.
  • the position of the lens frame 3 in the optical axis direction with respect to the imaging element 4a is adjusted.
  • the adjustment ring 1 is screwed into the holder 2 so that the adjustment ring 1 and the lens frame 3 are in contact with each other, thereby fixing the position of the lens frame 3 in the optical axis direction.
  • the adjustment ring 1 and the lens frame 3 are separated from each other in the optical axis direction by rotating the adjustment ring 1 in the direction opposite to the screwing direction from the front in the optical axis direction.
  • the lens frame 3 can be moved forward in the optical axis direction with respect to the holder 2. Note that the lens frame 3 can be moved rearward in the optical axis direction without moving the adjustment ring 1.
  • focus adjustment is performed by adjusting the position of the lens without using an adhesive for the connecting portion of the adjustment ring 1, the holder 2, and the lens frame 3. Can do.
  • focus adjustment can be performed relatively easily even when it is desired to adjust focus again after completing focus adjustment.
  • Second Embodiment> First, a second embodiment of the present invention will be described with reference to FIGS.
  • the imaging device of this embodiment includes what has the same or similar configuration and function as the imaging device of Embodiment 1, the description of the same or similar configuration as in Embodiment 1 may be omitted. .
  • FIG. 4 is an external perspective view of the imaging apparatus of the present embodiment.
  • FIG. 5 is an exploded perspective view of the imaging apparatus.
  • FIG. 6 is a cross-sectional view of the imaging apparatus. 4 to 6 correspond to FIGS. 1 to 3 of the first embodiment, respectively.
  • the imaging apparatus includes an adjustment ring 11, a holder 21, a lens frame 31, and a substrate 4.
  • the holder 21 and the substrate 4 are connected by connecting screws 5a and 5b.
  • the holder 21 holds the adjustment ring 11 and the lens frame 31.
  • the holder 21 is connected to the substrate 4 by connecting screws 5a and 5b.
  • the holder 21 has a cylindrical opening centered on the optical axis, and the adjustment ring 11 and the lens frame 31 are inserted into the opening from the front to the rear in the optical axis direction.
  • a screw thread is formed at a position G inside the opening.
  • the holder 21 further has a screw hole (not shown) into which the connecting screws 5a and 5b are inserted.
  • the holder 21 has a surface orthogonal to the optical axis on the rear side in the optical axis direction, and contacts the substrate 4 on this surface.
  • the holder 21 and the substrate 4 are screwed together by connecting screws 5a and 5b.
  • the holder 21 has a surface orthogonal to the optical axis at a position H in FIG. 6 on the front side in the optical axis direction, and contacts the adjustment ring 11 on this surface.
  • the lens frame 31 is a cylindrical member that extends in the optical axis direction.
  • the lens frame 31 holds an optical member including one or more lenses.
  • the lens frame 31 has a screw thread at a radially outer position (position G in FIG. 6) and is fitted to the screw thread of the holder 21. That is, the lens frame 31 and the holder 21 are screwed together. By rotating the lens frame 31 with respect to the holder 21, the screwing amount changes, and the position of the lens frame 31 with respect to the holder 21 in the optical axis direction changes.
  • the lens frame 31 further has a screw thread at a position radially outward (position F in FIG. 6) in front of the G position in the optical axis direction, and is fitted to the screw thread of the adjustment ring 11. That is, the lens frame 31 and the adjustment ring 11 are screwed together. By screwing the adjustment ring 11 into the lens frame 3, the adjustment ring 11 moves backward in the optical axis direction.
  • the adjustment ring 11 is disposed outside the lens frame 31 in the radial direction and in front of the holder 21 in the optical axis direction.
  • the adjustment ring 11 is disposed without contacting the lens frame 31 in the optical axis direction.
  • the adjustment ring 11 has a screw thread at a position F in FIG.
  • the adjustment ring 11 is fitted with a thread on the radially outer side of the lens frame 31 at the position F.
  • the adjustment ring 11 has a surface orthogonal to the optical axis at the position H in FIG. 3 on the rear side in the optical axis direction, and this surface is in contact with the front surface in the optical axis direction of the holder 2.
  • the focus is adjusted by adjusting the position of the lens frame 31 relative to the holder 21 in the optical axis direction. be able to.
  • the position of the lens frame 31 in the optical axis direction with respect to the imaging element 4a is adjusted by adjusting the screwing amount of the lens frame 31 with respect to the holder 21.
  • the adjustment ring 11 is screwed into the lens frame 31 so that the adjustment ring 11 and the holder 21 are in contact with each other, thereby fixing the position of the lens frame 31 in the optical axis direction.
  • the adjustment ring 11 and the holder 2 are separated from each other in the optical axis direction by rotating the adjustment ring 11 in the direction opposite to the screwing direction from the front in the optical axis direction.
  • the lens frame 31 can be moved in the optical axis direction with respect to the holder 21. Note that the lens frame 3 can be moved rearward in the optical axis direction without moving the adjustment ring 11.
  • the position of the lens can be obtained without using an adhesive at the connecting portion of the adjustment ring 11, the holder 21, and the lens frame 31, as in the first embodiment. Focus adjustment by adjustment can be performed. In addition, since no adhesive is used, focus adjustment can be performed relatively easily even when it is desired to adjust focus again after completing focus adjustment.
  • the holder 2 (or 21), the lens frame 3 (or 31), and the adjustment ring 1 (or 11) are connected without using an adhesive, but even if an adhesive is used. Good. Even in the case of using an adhesive, even if the amount of the adhesive used is reduced, the respective components can be connected with the same or higher strength as conventional.
  • the configuration in which the adjustment ring 1 (or 11) and the holder 2 (or 21) or the lens frame 3 (or 31) are screw-fitted is described as an example.
  • fitting means such as cam fitting can be employed. That is, the adjustment ring 1 (or 11) and the holder 2 (or 21) or the lens frame 3 (or 31) may be fitted by a fitting method that is movable in the optical axis direction.
  • the present invention is suitably used as an imaging apparatus capable of repeatedly performing focus adjustment for moving the lens frame in the optical axis direction with respect to the holder.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Studio Devices (AREA)

Abstract

L'invention concerne un dispositif d'imagerie comprenant : un cadre de lentille maintenant une lentille; un support maintenant le cadre de lentille; et une bague de réglage qui s'ajuste conjointement avec le cadre de lentille ou le support et entre en contact avec l'autre parmi le cadre de lentille et le support, dans la direction de l'axe optique.
PCT/JP2018/000897 2017-01-17 2018-01-16 Dispositif d'imagerie WO2018135451A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-005480 2017-01-17
JP2017005480A JP6761220B2 (ja) 2017-01-17 2017-01-17 撮像装置

Publications (1)

Publication Number Publication Date
WO2018135451A1 true WO2018135451A1 (fr) 2018-07-26

Family

ID=62909104

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/000897 WO2018135451A1 (fr) 2017-01-17 2018-01-16 Dispositif d'imagerie

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JP (1) JP6761220B2 (fr)
WO (1) WO2018135451A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014085668A (ja) * 2012-10-19 2014-05-12 Cognex Corp 電子デバイス用キャリアフレームと回路基板
WO2016121165A1 (fr) * 2015-01-30 2016-08-04 日本電産コパル株式会社 Dispositif d'imagerie, dispositif optique muni de celui-ci, dispositif électronique muni de celui-ci, et procédé de production d'un dispositif d'imagerie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010243780A (ja) * 2009-04-06 2010-10-28 Alps Electric Co Ltd カメラモジュールの製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014085668A (ja) * 2012-10-19 2014-05-12 Cognex Corp 電子デバイス用キャリアフレームと回路基板
WO2016121165A1 (fr) * 2015-01-30 2016-08-04 日本電産コパル株式会社 Dispositif d'imagerie, dispositif optique muni de celui-ci, dispositif électronique muni de celui-ci, et procédé de production d'un dispositif d'imagerie

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JP6761220B2 (ja) 2020-09-23
JP2018116100A (ja) 2018-07-26

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