WO2018181886A1 - Dispositif d'imagerie - Google Patents

Dispositif d'imagerie Download PDF

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Publication number
WO2018181886A1
WO2018181886A1 PCT/JP2018/013584 JP2018013584W WO2018181886A1 WO 2018181886 A1 WO2018181886 A1 WO 2018181886A1 JP 2018013584 W JP2018013584 W JP 2018013584W WO 2018181886 A1 WO2018181886 A1 WO 2018181886A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
optical axis
substrate
flange
lens barrel
Prior art date
Application number
PCT/JP2018/013584
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 WO2018181886A1 publication Critical patent/WO2018181886A1/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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/08—Waterproof bodies or housings

Definitions

  • One embodiment of the present invention relates to an imaging device or the like.
  • Patent Document 1 discloses a camera device in which a lens barrel is fitted inside an exterior case.
  • the dimensional variation of the connecting portion of each member including the case affects the positional deviation of the optical axis. It was. For this reason, the positional deviation at any of the connecting portions becomes the positional deviation of the optical axis, and thus the optical axis is likely to vary.
  • One means of the present invention is to A substrate (61) on which an imaging unit is mounted; A lens barrel (4) for holding the lens; A lens flange (5) connected to the lens barrel; A case (1, 8) for accommodating the substrate (61), the lens barrel (4), and a part of the lens flange (5); The lens flange (5) is exposed to the outside of the case and has an external connection portion configured to be connectable to an external device.
  • An imaging device An imaging device.
  • the lens flange is connected to an external device, and the configuration of the case or the like does not affect the positional deviation of the optical axis. Therefore, the number of members that affect the positional deviation of the optical axis should be relatively small. Can do. Thereby, it can be set as the structure which suppressed generation
  • a relative position between the lens flange and the substrate is fixed.
  • the imaging apparatus having the above-described configuration, it is possible to make the configuration in which the positional deviation between the substrate and the lens flange hardly occurs, and the optical axis positional deviation can be more effectively suppressed.
  • the lens barrel (4) is screwed with the lens flange (5).
  • the imaging apparatus having the above-described configuration, it is possible to achieve a configuration capable of suppressing the positional deviation of the optical axis while enabling the focus adjustment by adjusting the position of the lens barrel with respect to the lens flange.
  • FIG. 1 is an external perspective view of the imaging apparatus according to the embodiment.
  • FIG. 2 is an exploded perspective view of the imaging apparatus according to the embodiment.
  • FIG. 3 is a plan view of the imaging apparatus according to the embodiment as viewed from the front side. 4 is a cross-sectional view taken along the line AA of FIG.
  • the imaging apparatus is characterized in that the lens flange connected to the lens barrel is configured to be connectable with an external device, thereby suppressing the occurrence of a positional deviation of the optical axis.
  • 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 image sensor is referred to as “front side” or “front in the optical axis direction”, and the direction in which the image sensor is located with respect to the subject is referred to as “rear side” or “back in the optical axis direction”.
  • 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 according to the present embodiment.
  • FIG. 3 is a plan view of the imaging apparatus according to the present embodiment as viewed from the front side. 4 is a cross-sectional view taken along the line AA in FIG.
  • the imaging apparatus of the present embodiment includes a front case 1, a first waterproof seal 2, a second waterproof seal 3, a lens barrel 4, a lens flange 5, a first substrate 61, 2 substrate 62, the 3rd waterproof seal 7, the rear case 8, and the connector 9 are comprised.
  • the first waterproof seal 2, the second waterproof seal 3, and the third waterproof seal 7 may be collectively referred to as “waterproof seal”.
  • the front case 1 is a member that forms a housing (case) of the image pickup device together with a rear case 8 disposed rearward in the optical axis direction, and is formed of resin or the like.
  • a lens flange 5 is disposed between the front case 1 and the rear case 8.
  • the rear side of the front case 1 in the optical axis direction is in contact with the lens flange 5.
  • a second waterproof seal 3 is disposed between the front case 1 and the lens flange 5.
  • the front case 1 is connected to the lens flange 5 and the rear case 8 by a connector 10a.
  • the connector 10a is a screw or the like.
  • the front case 1 has an opening centered on the optical axis in the front in the optical axis direction, and the rear in the optical axis direction is opened to be connectable to the lens flange 5.
  • a space for accommodating the waterproof seal, the lens barrel 4, the first substrate 61, the second substrate 62, and the like is formed.
  • a part of the lens flange 5 is accommodated by the front case 1 and the rear case 8.
  • the lens 4a held by the lens barrel 4 is located in the front opening in the optical axis direction of the front case 1, and the radially inner side of the front case 1 and the lens barrel 4 The radially outer side is diameter-fitted.
  • a first waterproof seal 2 is disposed between the front case 1 and the lens barrel 4.
  • the rear case 8 is disposed behind the front case 1 and the lens flange 5 in the optical axis direction, and is formed of resin or the like.
  • the front side in the optical axis direction of the rear case is in contact with the lens flange 5.
  • a third waterproof seal 7 is arranged between the rear case 8 and the lens flange 5.
  • the rear case 8 is connected to the front case 1 and the lens flange 5, thereby forming a space for accommodating the waterproof seal, the lens barrel 4, the first substrate 61, the second substrate 62, and the like.
  • the rear case 8 has a rear surface substantially perpendicular to the optical axis, and a portion extending in a cylindrical shape from the rear surface in the optical axis direction front, and has a shape in which the front in the optical axis direction is opened.
  • the lens flange 5 is located in the open part in the front in the optical axis direction.
  • An opening is formed on the rear surface of the rear case 8.
  • the connector 9 is inserted into the opening, and the rear case 8 and the connector 9 are fitted and connected.
  • the first waterproof seal 2, the second waterproof seal 3, and the third waterproof seal 7 are each formed of an elastic member such as rubber.
  • the first waterproof seal 2 is disposed between the front case 1 and the lens barrel 4, and prevents a gap from being generated between the front case 1 and the lens barrel 4.
  • the first waterproof seal 2 is pressed in a direction perpendicular to the optical axis.
  • the first waterproof seal 2 has an annular shape.
  • the second waterproof seal 3 is disposed between the front case 1 and the lens flange 5, and prevents a gap from being generated between the front case 1 and the lens flange 5.
  • the second waterproof seal 3 is pressed in the optical axis direction.
  • the second waterproof seal 3 has a shape corresponding to the rear shape of the front case 1 in the optical axis direction, and the second waterproof seal 3 of the present embodiment has a rectangular shape with corners notched. .
  • the third waterproof seal 7 is disposed between the rear case 8 and the lens flange 5, and prevents a gap from being generated between the rear case 8 and the lens flange 5.
  • the third waterproof seal 7 is pressed in the optical axis direction.
  • the third waterproof seal 7 has a shape corresponding to the shape in front of the rear case 8 in the optical axis direction, and the third waterproof seal 7 of the present embodiment has a rectangular shape with corners cut out. .
  • the lens barrel 4 is a cylindrical member extending in the optical axis direction, and holds one or more optical members including the lens 4a.
  • the optical member held by the lens barrel 4 includes a lens, a spacer, a caliber plate, an optical filter, and the like in addition to the lens 4a.
  • the lens including the lens 4a 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 plate-like and annular 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 and type of these optical members held in the lens barrel 4 can be arbitrarily changed.
  • the lens barrel 4 is screw-fitted with a lens flange 5 disposed on the rear side in the optical axis direction.
  • the lens barrel 4 is formed with a thread on the radially outer side, and is screw-fitted with a thread formed on the radially inner side of the opening of the lens flange 5 (see the position “C” in FIG. 4). .
  • the lens barrel 4 is inserted into the lens flange 5 by rotating in a predetermined direction with respect to the lens flange 5. That is, the relative position of the lens barrel 4 in the optical axis direction with the lens flange 5 changes according to the screwing amount with respect to the lens flange 5.
  • the lens barrel 4 and the lens flange 5 may be cam-fitted instead of screw-fitting. That is, the lens barrel 4 and the lens flange 5 are screwed together.
  • the lens flange 5 is disposed behind the lens barrel 4 in the optical axis direction.
  • the lens flange 5 is a member having a shape extending in a direction perpendicular to the optical axis.
  • the lens flange 5 has an opening centered on the optical axis, and the lens barrel 4 is inserted into this opening to be coupled to the lens barrel 4 by screw fitting (FIG. 4). (Refer to the position of “C”).
  • an imaging element 63 mounted on the first substrate 61 is located behind the lens barrel 4 in the optical axis direction of the opening.
  • the lens flange 5 is connected to the front case 1 and the rear case 8 and has an external connection portion exposed outside the case in a direction perpendicular to the optical axis. As shown in FIG. 3 and FIG. 4, the external connection portion of the lens flange 5 has through holes 5a to 5f.
  • the through holes 5a to 5f are connected to an external device by inserting a connector for connecting to an attachment target device (sometimes referred to as an “external device”) to which the imaging device is attached.
  • the external device is, for example, a vehicle.
  • the front surface in the optical axis direction of the first substrate 61 is in contact with the rear surface in the optical axis direction of the lens flange 5 (see the position “B” in FIG. 4).
  • the position of the first substrate 61 and the position of the image sensor 63 mounted on the first substrate 61 are fixed with the lens flange 5 as a reference.
  • the first substrate 61 and the second substrate 62 are rigid substrates on which electronic components including the image sensor 63 are mounted.
  • the image sensor 63 and electronic components are mounted on the first substrate 61, and the electronic components are mounted on the second substrate 62.
  • substrate 62 are electrically connected by the conducting wire mounted in the flexible substrate.
  • the electrical signal acquired by the imaging device 63 is output as image data to the outside of the imaging device after being subjected to predetermined electrical processing or signal processing by electronic components mounted on the first substrate 61 and the second substrate 62.
  • the front surface of the first substrate 61 in the optical axis direction is in contact with the rear surface of the lens flange 5 in the optical axis direction.
  • the second substrate 62 is connected to the connector 9 at the rear in the optical axis direction.
  • the imaging element 63 is a photoelectric conversion element that converts irradiated light into an electrical signal, and is, for example, a C-MOS sensor or a CCD, but is not limited thereto.
  • an imaging unit that requires an imaging function other than the imaging element 63 may be employed.
  • the imaging device is an example of the “imaging unit” in the present invention.
  • the connector 9 is disposed behind the rear case 8 in the optical axis direction, and is connected to the rear case 8 by a connector 10b.
  • the connector 9 includes a signal line and electrically connects the imaging device and an external device.
  • the imaging apparatus is configured such that the lens flange 5 fitted to the lens barrel 4 is exposed to the outside of the case and can be connected to an external device. Therefore, the configuration of the front case 1 or the rear case 8 does not affect the positional deviation of the optical axis.
  • the positional deviation of the optical axis is caused by the connecting portion between the external device and the lens flange 5, the lens flange 5 and the first substrate 61. And the fitting portion between the lens flange 5 and the lens barrel 4. That is, since each member is connected with reference to the lens flange 5 that can be connected to an external device, the dimensional tolerance included in each member does not increase, so that the dimensional error does not increase, so that the optical axis can be easily adjusted. Can be. In other words, since it is possible to relatively reduce the number of members that affect the positional deviation of the optical axis, a configuration in which the occurrence of the positional deviation of the optical axis is suppressed can be achieved.
  • the lens flange 5 and the first substrate 61 on which the imaging element 63 is mounted abut on the optical axis direction, so that the lens flange 5 and the first substrate 61 are in the optical axis direction.
  • the relative position is fixed. Thereby, it can be set as the structure which is hard to produce the position shift of the 1st board
  • the lens barrel 4 is screwed with the lens flange 5, by adjusting the screwed state, the position of the lens barrel 4 with respect to the lens flange 5 is adjusted. Focus adjustment for adjusting the positions of the image sensor 63 and the lens barrel 4 in the optical axis direction is possible. Further, since the mutual position can be fixed by fixing the screwed state of the lens barrel 4 and the lens flange 5, it is possible to suppress the positional deviation of the optical axis.
  • the lens flange 5 and the first substrate 61 described in the embodiment are fixed in mutual position by being in direct contact with each other in the optical axis direction, but may be connected through some member.
  • the lens barrel 4 and the lens flange 5 are screwed together, but the lens barrel 4 and the lens flange 5 may be simply fitted with a diameter.
  • the configuration having the two substrates of the first substrate 61 and the second substrate 62 has been described as an example, but the number of substrates may be arbitrarily changed. That is, the number of substrates on which the image sensor 63 is mounted may be one, or three or more.
  • the configuration example in which the lens barrel 4 and the lens flange 5 are separately configured has been described.
  • the lens barrel 4 and the lens flange 5 may be integrally formed.
  • a configuration in which the lens barrel 4 and the lens flange 5 are integrally formed is included in addition to a configuration in which they are connected as separate components.
  • the configuration example in which the front case 1 and the lens barrel 4 are configured separately has been described.
  • the front case 1 and the lens barrel 4 may be integrally formed.
  • the present invention is suitably used as an in-vehicle imaging device.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)
  • Camera Bodies And Camera Details Or Accessories (AREA)
  • Structure And Mechanism Of Cameras (AREA)
  • Studio Devices (AREA)

Abstract

La présente invention concerne un dispositif d'imagerie, le dispositif d'imagerie étant pourvu d'un substrat pour monter une partie d'imagerie, un barillet de lentille pour retenir une lentille, une bride de lentille raccordée au barillet de lentille, et un boîtier pour recevoir le substrat, le barillet de lentille, et une partie de la bride de lentille, la bride de lentille étant configurée de façon à avoir une partie de connexion externe exposée sur l'extérieur du boîtier et configurée de façon à pouvoir être connectée à un instrument externe.
PCT/JP2018/013584 2017-03-31 2018-03-30 Dispositif d'imagerie WO2018181886A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-070068 2017-03-31
JP2017070068A JP2018173465A (ja) 2017-03-31 2017-03-31 撮像装置

Publications (1)

Publication Number Publication Date
WO2018181886A1 true WO2018181886A1 (fr) 2018-10-04

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ID=63678013

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Application Number Title Priority Date Filing Date
PCT/JP2018/013584 WO2018181886A1 (fr) 2017-03-31 2018-03-30 Dispositif d'imagerie

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JP (1) JP2018173465A (fr)
WO (1) WO2018181886A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002350701A (ja) * 2001-05-28 2002-12-04 Sony Corp 撮像レンズ装置
JP2005266276A (ja) * 2004-03-18 2005-09-29 Sony Corp カメラ
JP2006327514A (ja) * 2005-05-30 2006-12-07 Ichikoh Ind Ltd 車載カメラ構造

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002350701A (ja) * 2001-05-28 2002-12-04 Sony Corp 撮像レンズ装置
JP2005266276A (ja) * 2004-03-18 2005-09-29 Sony Corp カメラ
JP2006327514A (ja) * 2005-05-30 2006-12-07 Ichikoh Ind Ltd 車載カメラ構造

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JP2018173465A (ja) 2018-11-08

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