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WO2019049538A1 - Dispositif d'imagerie - Google Patents

Dispositif d'imagerie Download PDF

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Publication number
WO2019049538A1
WO2019049538A1 PCT/JP2018/027800 JP2018027800W WO2019049538A1 WO 2019049538 A1 WO2019049538 A1 WO 2019049538A1 JP 2018027800 W JP2018027800 W JP 2018027800W WO 2019049538 A1 WO2019049538 A1 WO 2019049538A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
case
lens barrel
imaging device
imaging
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2018/027800
Other languages
English (en)
Japanese (ja)
Inventor
優太 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nidec Precision Corp
Original Assignee
Nidec Copal Corp
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 Nidec Copal Corp filed Critical Nidec Copal Corp
Publication of WO2019049538A1 publication Critical patent/WO2019049538A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Definitions

  • One embodiment of the present invention relates to an imaging device and the like.
  • an imaging apparatus in which a lens barrel for holding a lens and a substrate on which an imaging element is mounted is housed in a case has been widely adopted.
  • a configuration in which an O-ring is disposed may be employed in order to seal the inside of a case in which a substrate is accommodated and prevent moisture and the like from intruding.
  • the configuration having such an O-ring is disclosed, for example, in Patent Document 1 and Patent Document 2.
  • One means of the present invention is An imaging unit (511) for imaging a subject; A substrate (51, 52) on which the imaging unit is mounted; A lens barrel (1) holding a lens; And a case (3, 7) for housing the substrate and the lens barrel, The lens barrel is screwed into the case, A seal member (2) is disposed closer to the imaging unit than a screwing portion between the lens barrel and the case. It is an imaging device.
  • dust such as wear powder generated at the screwing portion between the lens barrel and the case can be configured to be prevented from intruding into the position where the substrate is accommodated. This makes it possible to prevent dust such as wear powder from adhering to the imaging unit, and to prevent deterioration in the image quality of the captured image caused by the dust adhering to the imaging unit.
  • the seal member is formed of an elastic member.
  • the space between the lens barrel and the case can be effectively sealed.
  • a space in which the case accommodates the substrate is sealed by the seal member.
  • the imaging device of the above-described configuration it is possible to reliably prevent the entry of moisture such as moisture and abrasion dust into the space in which the substrate is accommodated.
  • the imaging device of the above configuration it is possible to reliably prevent dust such as wear powder generated from the screwing portion from invading the position of the substrate on which the imaging unit is mounted.
  • FIG. 1 is an external perspective view of the imaging apparatus as viewed from the front side.
  • FIG. 2 is an external perspective view of the imaging device as viewed from the rear side.
  • FIG. 3 is an exploded perspective view of the imaging apparatus as viewed from the front side.
  • FIG. 4 is an exploded perspective view of the imaging device as viewed from the rear side.
  • FIG. 5 is an enlarged sectional view of the imaging device.
  • the imaging apparatus according to the present invention is characterized in that the case and the lens barrel are screw-fitted, and the waterproof seal is disposed at a position closer to the imaging device than the screw-fitted portion.
  • the central position of the light incident on the imaging device which is the central position of the lens mounted on the imaging device, is referred to as the “optical axis”.
  • An imaging target located on the opposite side to the imaging element with respect to the lens is referred to as a "subject”.
  • the direction in which the subject is positioned with respect to the imaging device is referred to as “front side” or “forward in the optical axis direction”, and the direction in which the imaging device is positioned relative to the subject is referred to as “rear side” or “rear in the optical axis direction”.
  • FIG. 1 and 2 are external views of the imaging apparatus, and FIG. 1 is a front side, and FIG. 2 is a rear view.
  • 3 and 4 are exploded perspective views of the imaging apparatus, and FIG. 3 is a front side, and FIG. 4 is a rear view.
  • FIG. 5 is a cross-sectional view of the imaging device.
  • the imaging apparatus includes the lens barrel 1, the seal member 2, the front case 3, the waterproof seal 4, the first substrate 51, the second substrate 52, the shield plate 6, and the rear case 7. It comprises.
  • the substrate portion is separated into the first substrate 51 and the second substrate 52, these may be configured by one substrate.
  • the front case 3 is a member that forms a case (case) of the imaging device together with the rear case 7 and is formed of conductive metal or the like. As can be easily understood by those skilled in the art, the front case 3 does not necessarily have to be metal, as long as it is made of a conductor.
  • the front case 3 has an opening at the front in the optical axis direction centered on the optical axis, and the rear in the optical axis direction is openably connected to the rear case 7 and has a substantially rectangular shape so as to cover the optical axis. It has a circumferential surface.
  • the lens 1 a held by the lens barrel 1 is positioned at an opening on the front side of the front case 3 in the optical axis direction.
  • a screw thread is formed on the inner side in the radial direction of the front case 3 (position “A” in FIG. 5), and the screw thread is engaged with the screw thread of the lens barrel 1 with this screw thread.
  • the rear case 7 is connected to the front case 3 as described above to form a space for housing the lens barrel 1, the first substrate 51, the second substrate 52, the shield plate 6 and the like.
  • the rear case 7 has a shape along the shield plate 6, has a surface substantially perpendicular to the optical axis at the rear in the optical axis direction, and covers the optical axis in the optical axis direction from this surface. And has a substantially rectangular peripheral surface protruding from the In addition, the rear case 7 projects from the surface toward the rear in the optical axis direction along the shape of the shield plate 6.
  • the front of the rear case 7 in the optical axis direction has substantially the same shape as the rear of the front case 3 in the optical axis direction, and is connected to the front case 3 by connection screws 85 and 86 in the assembled state.
  • a waterproof seal 4 is disposed between the rear case 7 and the front case 3.
  • the rear case 7 has a connector portion 74 at the rear in the optical axis direction for connecting the connector 512 of the first substrate 51 to an external device.
  • the connector portion 74 has a signal line located at the center and a ground potential portion formed in a cylindrical shape so as to cover the signal line.
  • the connector section 74 is connected to an external device via a cable or the like (not shown) as necessary.
  • the ground potential portion is electrically connected to the ground potential of the external device.
  • the signal line is electrically connected to the external device, and transmits the signal output from the first substrate 51 to the external device. Also, this signal line may be used when transmitting a signal from an external device to the first substrate 51.
  • the lens barrel 1 is a cylindrical member that holds one or more optical members including the lens 1 a and extends in the optical axis direction.
  • the optical member held by the lens barrel 1 includes, in addition to the lens 1a, a lens, a spacer, an aperture plate, an optical filter, and the like.
  • the lens including the lens 1 a is formed of a transparent material such as glass or plastic, and transmits light from the front in the optical axis direction to the rear in the optical axis direction while refracting light from the front.
  • the spacer is a plate-like, 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 passing light.
  • An optical filter suppresses or blocks light of a predetermined wavelength.
  • the optical filter includes, for example, an infrared cut filter that suppresses infrared light passing therethrough. The number of these optical members can be arbitrarily changed.
  • the lens barrel 1 has a screw thread on the outer peripheral portion in the radial direction (position "A" in FIG. 5), and is screw-engaged with the screw thread of the front case 3 with this screw thread.
  • the seal member 2 is an annular member formed of an elastic member such as rubber or resin, and is disposed between the front case 3 and the lens barrel 1.
  • the seal member 2 has an annular shape along the position of the outer edge of the opening of the front case 3.
  • the seal member 2 is disposed at a position closer to the first substrate 51 and the imaging element 511 than the position of “A” in FIG. 5 in which the lens barrel 1 and the front case 3 are thread-fitted.
  • the seal member 2 of the present embodiment has the same configuration as a conventional waterproof seal or O-ring for preventing moisture and the like from invading the position of the substrate and the imaging device, but the arrangement position is different. Different effects are obtained. That is, the screw fitting position “A” between the lens barrel 1 and the front case 3 is located outside the space where the first substrate 51 and the imaging device 511 are accommodated by the front case 3 and the rear case 7. . Therefore, it is possible to prevent dust such as abrasion powder generated by screw fitting between the lens barrel 1 and the front case 3 from entering the space in which the first substrate 51 and the like are accommodated.
  • the waterproof seal 4 is a rectangular member formed of an elastic member such as rubber or resin, and is disposed between the front case 3 and the rear case 7 so that the front case 3 and the rear case 7 can be separated. Acts to connect without gaps.
  • the waterproof seal 4 is formed in a rectangular shape along a rectangular open portion on the rear side in the optical axis direction of the front case 3 and a rectangular open portion on the front side in the optical axis direction of the rear case 7.
  • the shape of the open portion at the rear of the front case 3 in the optical axis direction, the open portion at the front of the rear case 7 in the optical axis direction, and the waterproof seal 4 is not limited to rectangular but may be circular. It may be polygonal or the like.
  • the waterproof seal 4 and the seal member 2 may be called "O-ring" or the like.
  • the first substrate 51 is a rigid substrate on which the imaging device 511 is mounted. Electronic components other than the image sensor 511 may be mounted on the first substrate 51.
  • a connector 512 is mounted on the rear surface of the first substrate 51 in the optical axis direction. Since the imaging device 511 is mounted on the front surface of the first substrate 51 in the optical axis direction, the first substrate 51 is along a plane perpendicular to the optical axis so that light is emitted to the imaging device 511 at the time of imaging. Be placed.
  • the first substrate 51 and the second substrate 52 are electrically connected, for example, via a flexible substrate 53 (see FIG. 5) or the like.
  • the electrical signal acquired by the imaging element 511 is subjected to predetermined electrical processing or signal processing by the electronic components mounted on the first substrate 51 and the second substrate 52, and then the connector portion 74 of the rear case 7 from the connector 512.
  • the electrical signal acquired by the imaging element 511 is subjected to predetermined electrical processing or signal processing by the electronic components mounted on the first substrate 51 and the second substrate 52, and then the connector portion 74 of the rear case 7 from the connector 512.
  • the first substrate 51 is connected to the front case 3 by the connection screws 81 and 82 and fixed in position.
  • the imaging element 511 is a photoelectric conversion element that converts the emitted light into an electric signal, and is, for example, a C-MOS sensor or a CCD, but is not limited thereto. Further, in the imaging device, an imaging unit requiring an imaging function other than the imaging element 511 may be adopted.
  • the imaging device is an example of the “imaging unit” in the present invention.
  • the second substrate 52 is a rigid substrate on which electronic components are mounted.
  • the second substrate 52 is disposed so as to extend in a direction perpendicular to the first substrate 51 and horizontal to the optical axis.
  • the second substrate 52 can be arranged so as not to interfere with the connector 512 and the connector portion 74.
  • the length (thickness) in the optical axis direction is partially shortened.
  • the second substrate 52 has a protrusion that protrudes outward from the outer edge with respect to the optical axis. By inserting these protrusions into the fitting portions 61 a and 61 b formed on the shield plate 6, the second substrate 52 and the shield plate 6 are fitted. In addition, the second substrate 52 receives a biasing force directed forward from the plate spring portion 62 of the shield plate 6 in the optical axis direction. As described above, the second substrate 52 is stably held to the shield plate 6 and the rear case 7 by receiving the biasing force from the plate spring portion 62.
  • the shield plate 6 is formed of a plate-like member such as a conductive metal.
  • the shield plate 6 is arranged to cover the first substrate 51 and the second substrate 52 in an assembled state. More specifically, the shield plate 6 has a first box-like portion surrounding the first substrate 51 and a second box-like portion surrounding the second substrate 52, which are respectively opened forward in the optical axis direction. At the time of assembly, the first substrate 51 and the second substrate 52 are inserted and assembled from the open portion in the optical axis direction front.
  • the shield plate 6 is connected to the rear case 7 by connection screws 83 and 84.
  • the shield plate 6 has fitting portions 61 a and 61 b and a plate spring portion 62 as shown in FIGS. 3 and 4.
  • the fitting portions 61 a and 61 b are through holes disposed at positions facing the protrusions of the second substrate 52. In the assembled state, the protrusions of the second substrate 52 are inserted into the fitting portions 61a and 61b.
  • the plate spring portion 62 holds the second substrate 52 while urging it forward in the optical axis direction.
  • the seal member 2 is disposed closer to the first substrate 51 and the imaging device 511 than the lens barrel 1, the front case 3, and the screw fitting portion (position of “A”). There is.
  • dust such as wear powder generated at the screw fitting portion between the lens barrel 1 and the front case 3 is prevented from invading the space in which the first substrate 51 and the imaging device 511 are accommodated. be able to. Accordingly, it is possible to prevent dust such as abrasion powder from adhering to the imaging element 511, and to prevent deterioration of the image quality of a captured image caused by the dust adhering to the imaging unit.
  • the fitting of the lens barrel 1 and the front case 3 is not necessarily limited to the screw fitting, and may be fitted by other screw fitting such as cam fitting.
  • the seal member 2 is formed of an elastic member such as rubber or resin, the first substrate 51 and the imaging device 511 and the like formed by the lens barrel 1 and the front case 3 are provided.
  • the space to be accommodated can be configured to be effectively sealed.
  • the sealing member 2 is more preferably formed of rubber.
  • the space in which the first substrate 51, the imaging element 511, and the like are accommodated is sealed by the sealing member 2. Therefore, it is possible to reliably prevent the intrusion of dust such as moisture and abrasion powder into the space in which the first substrate 51 and the imaging element 511 and the like are accommodated.
  • the screwing portion between the lens barrel and the front case 3 does not exist at a position closer to the space in which the imaging element 511 and the like are accommodated from the position where the sealing member 2 is disposed. It has composition. Therefore, dust such as wear powder generated from the screwing portion can be reliably prevented from intruding into the position of the substrate on which the imaging element 511 and the like are mounted.
  • the front case 3 and the rear case 7 are provided.
  • the present invention is not limited to this configuration as long as the case includes a case portion.
  • the configuration having the two rigid substrates of the first substrate 51 and the second substrate 52 has been described, but a configuration having an additional rigid substrate may be adopted, or one rigid substrate may be employed. Only a rigid substrate may be provided. Alternatively, a flexible substrate may be used instead of the rigid substrate.
  • the present invention is suitably used as an on-vehicle imaging device or the like.

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

Abstract

L'invention concerne un dispositif d'imagerie comprenant : une unité d'imagerie capturant des images d'un sujet ; un substrat sur lequel l'unité d'imagerie est montée ; un barillet de lentille maintenant une lentille ; et un boîtier logeant le substrat et le barillet de lentille. Le dispositif d'imagerie dispose d'une configuration dans laquelle un barillet de lentille est vissé sur le boîtier et un élément d'étanchéité est agencé plus loin sur le côté de l'unité d'imagerie que la section à laquelle le barillet de lentille et le boîtier sont vissés.
PCT/JP2018/027800 2017-09-07 2018-07-25 Dispositif d'imagerie Ceased WO2019049538A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017172474A JP2019050454A (ja) 2017-09-07 2017-09-07 撮像装置
JP2017-172474 2017-09-07

Publications (1)

Publication Number Publication Date
WO2019049538A1 true WO2019049538A1 (fr) 2019-03-14

Family

ID=65635292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/027800 Ceased WO2019049538A1 (fr) 2017-09-07 2018-07-25 Dispositif d'imagerie

Country Status (2)

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JP (1) JP2019050454A (fr)
WO (1) WO2019049538A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023145129A1 (fr) * 2022-01-26 2023-08-03 パナソニックＩｐマネジメント株式会社 Dispositif d'imagerie

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006235575A (ja) * 2005-02-25 2006-09-07 Ashu Kogaku Kofun Yugenkoshi 鏡筒モジュール
JP2011209417A (ja) * 2010-03-29 2011-10-20 Ricoh Co Ltd 撮像装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006235575A (ja) * 2005-02-25 2006-09-07 Ashu Kogaku Kofun Yugenkoshi 鏡筒モジュール
JP2011209417A (ja) * 2010-03-29 2011-10-20 Ricoh Co Ltd 撮像装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023145129A1 (fr) * 2022-01-26 2023-08-03 パナソニックＩｐマネジメント株式会社 Dispositif d'imagerie

Also Published As

Publication number Publication date
JP2019050454A (ja) 2019-03-28

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