WO2018181885A1 - Lens unit and imaging device - Google Patents

Lens unit and imaging device Download PDF

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Publication number
WO2018181885A1
WO2018181885A1 PCT/JP2018/013583 JP2018013583W WO2018181885A1 WO 2018181885 A1 WO2018181885 A1 WO 2018181885A1 JP 2018013583 W JP2018013583 W JP 2018013583W WO 2018181885 A1 WO2018181885 A1 WO 2018181885A1
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Prior art keywords
lens
waterproof seal
protrusion
lens unit
lens frame
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PCT/JP2018/013583
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French (fr)
Japanese (ja)
Inventor
優太 中村
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日本電産コパル株式会社
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Priority to CN201880021686.9A priority Critical patent/CN110462508A/en
Publication of WO2018181885A1 publication Critical patent/WO2018181885A1/en

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    • 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
    • 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

Definitions

  • One embodiment of the present invention relates to an imaging device and a lens unit used for the imaging device and the like.
  • An image pickup apparatus configured to include a lens frame that holds a lens and an image pickup element may be configured to include a waterproof seal in order to prevent water and dust from entering inside from between the lenses.
  • a high waterproof performance is required in a surveillance camera or an in-vehicle camera installed outside the vehicle body that is exposed to rain or outside air.
  • Patent Document 1 discloses a configuration in which a block is attached to ensure waterproofness of an in-vehicle camera.
  • the waterproof performance may not be maintained due to the annular waterproof seal being caught by the lens frame during assembly or being deformed or moved. Further, in the work for incorporating the waterproof seal into the lens frame, it is not easy to assemble the waterproof seal without deviation. On the other hand, if it is configured to include another member in order to enhance waterproof performance, an additional configuration is required to increase waterproofness, which may result in a complicated configuration or a high-cost configuration. .
  • One means of the present invention is to A lens frame (1) for holding the lens; A waterproof seal (3) disposed between the lens frame (1) and the lens (1a) or a connection target member; The waterproof seal (3) An annular portion (3a) extending annularly; A first protrusion (3b) extending from the annular portion, The width of the radial cross section of the first protrusion (3b) is smaller than the width of the radial cross section of the annular portion, It is a lens unit.
  • the prevention seal since the prevention seal has the first protrusion, it is difficult for the waterproof seal to be displaced, and it is possible to prevent the waterproof seal from being caught by the lens frame and being deformed during assembly. it can. Moreover, waterproofing performance can be improved by having the structure which has a 1st protrusion part in addition to an annular part. Moreover, since an additional member other than the waterproof seal is not required, the configuration can be made cheaper than the configuration having the additional member.
  • the first protrusion (3b) extends in an annular shape.
  • the lens unit having the above-described configuration it is possible to make a configuration in which it is difficult for displacement to occur over the entire circumference of the annular waterproof seal, and it is possible to make a configuration in which the waterproof seal is less likely to cause displacement.
  • the waterproof seal further includes a second protrusion (3c) extending in a direction opposite to the first protrusion, The width of the radial cross section of the second protrusion is smaller than the width of the radial cross section of the annular portion.
  • the waterproof seal has a second projecting portion in addition to the first projecting portion, and the projecting portions are arranged on both sides of the annular portion. Can do.
  • the second protrusion extends in an annular shape.
  • the waterproof seal can be further configured to be less likely to be displaced.
  • the waterproof seal is made of rubber.
  • the present invention also includes an image pickup apparatus including any one of the lens units described above and an image pickup element.
  • the imaging device since the lens unit includes a lens unit whose waterproof performance is enhanced by a waterproof seal, the imaging device can be excellent in waterproofness.
  • 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 cross-sectional view of the imaging apparatus according to the embodiment.
  • FIG. 4 is an enlarged cross-sectional view of the periphery of the waterproof seal before being assembled with the lens frame in the imaging apparatus of the embodiment.
  • FIG. 5 is an enlarged cross-sectional view of the periphery of the waterproof seal in an assembled state with the lens frame in the imaging apparatus of the embodiment.
  • FIG. 6 is an enlarged cross-sectional view of the periphery of the waterproof seal in a state before being assembled with the lens frame in the imaging device of the modification.
  • FIG. 7 is an enlarged cross-sectional view of the periphery of the waterproof seal in a state assembled with the lens frame in the imaging device of the modification.
  • the image pickup apparatus of the present invention is characterized by a waterproof seal disposed in the lens unit, and has a feature that it has a protruding portion in addition to the annular portion.
  • 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 as viewed from the front side.
  • FIG. 2 is an exploded perspective view of the imaging apparatus according to the present embodiment as viewed from the front side.
  • FIG. 3 is a cross-sectional view of the imaging apparatus according to the present embodiment, in which the imaging element is omitted.
  • the imaging apparatus of the present embodiment includes a lens frame 1, a first lens 2, a waterproof seal 3, a first aperture plate 4, a second lens 5, a second aperture plate 6, a third lens 7, A three-diameter plate 8, a fourth lens 9, and an image sensor 10 are included.
  • the configuration including the lens frame 1 and the optical member held by the lens frame 1 is referred to as a “lens unit”.
  • the lens frame 1 is a cylindrical member that extends in the optical axis direction.
  • the lens frame 1 holds the first lens 2, the waterproof seal 3, the first aperture plate 4, the second lens 5, the second aperture plate 6, the third lens 7, the third aperture plate 8, and the fourth lens 9. .
  • spacers and optical filters are collectively referred to as optical members.
  • the first lens 2, the second lens 5, and the third lens 7 are made of a transparent material such as glass or plastic, and transmit the light from the front in the optical axis direction to the rear in the optical axis direction.
  • the first caliber plate 4, the second caliber plate 6, and the third caliber plate 8 each have an opening having a predetermined diameter, and shields and passes a part of the radially outer side of the light passing therethrough. Determine the outermost position of the light to be transmitted.
  • the waterproof seal 3 is formed of an elastic member such as an annular rubber, and is disposed between the first lens 2 and the lens frame 1. By disposing the waterproof seal 3, a liquid such as water or a fluid such as a gas containing dust is prevented from entering (inflowing) into the interior from the gap between the first lens 2 and the lens frame 1.
  • FIG. 4 and 5 are enlarged sectional views of the periphery of the waterproof seal 3 according to the present embodiment.
  • FIG. 4 shows a state before the lens frame 1 and the lens 2 are assembled.
  • FIG. 5 shows the lens frame 1 and the lens. 2 etc. show the assembled state.
  • 4 and 5 are cross-sectional views of the waterproof seal 3 in the radial direction.
  • the annular portion 3a is crushed into an elliptical shape.
  • the shape of the 1st protrusion part 3b does not change substantially. That is, the inner diameter of the annular portion 3 a in a state before assembly is slightly larger than the distance between the lens frame 1 and the first lens 2.
  • the annular portion 3 a of the waterproof seal 3 is pushed by the lens frame 1 and receives a force in the rotational direction, but the first projecting portion 3 b abuts on the first lens 2. This acts as a stopper and restricts the rotation of the waterproof seal 3.
  • the 1st protrusion part 3b does not necessarily need to be formed over the perimeter of the cyclic
  • the first protrusion 3b extends in an annular shape and is formed over the entire circumference of the annular portion 3a.
  • the waterproof seal 3 is formed of rubber, it can be configured to have high waterproof performance.
  • the imaging apparatus employing the lens unit of the present embodiment can be an imaging apparatus having high waterproof performance.
  • FIGS. 6 and 7 are enlarged cross-sectional views of the periphery of the waterproof seal 3 of this modification.
  • FIG. 6 shows a state before the lens frame 1 and the lens 2 are assembled.
  • FIG. 7 shows the lens frame 1 and the lens. 2 etc. show the assembled state.
  • FIGS. 6 and 7 a cross-sectional view in the radial direction of the waterproof seal 3 is shown.
  • the waterproof seal 3 has a shape in which the annular portion 3a, the first projecting portion 3b, and the second projecting portion 3c are combined. That is, compared with the waterproof seal 3 of the embodiment, the second protrusion 3c is added. Similarly to the first protrusion 3b, the second protrusion 3c extends in a direction parallel to the surface of the first lens 2 and the surface of the lens frame 1 that faces the first lens 2 at the time of assembly. However, it extends in the opposite direction to the first protrusion 3b. The width of the second protrusion 3c is smaller than the inner diameter of the annular portion 3a.
  • the annular portion 3a is crushed into an elliptical shape.
  • the shape of the 1st protrusion part 3b and the 2nd protrusion part 3c does not change substantially.
  • the annular portion 3a of the waterproof seal 3 is pushed by the lens frame 1 and receives a force in the rotational direction, but the first projecting portion 3b contacts the first lens 2.
  • the second protrusion 3c abuts on the lens frame 1 to act as a stopper and restricts the rotation of the waterproof seal 3.
  • the waterproof seal 3 has the second projecting portion 3c in addition to the first projecting portion 3b, and the projecting portions are arranged on both sides of the annular portion 3a. Further, it is possible to make the configuration difficult to cause the positional deviation.
  • the waterproof seal 3 is formed with protrusions (the first protrusion 3b and the second protrusion 3c) over the entire circumference on both sides of the annular portion 3a, so that it is more difficult to cause positional displacement. It can be.
  • first projecting portion 3b and the second projecting portion 3c are preferably rectangular or similar in shape from the function of restricting the rotation and movement of the waterproof seal 3, but they are oval or circular. May be.
  • the waterproof seal 3 may be configured to further include a third protrusion in addition to the first protrusion 3b and the second protrusion 3c.
  • the present invention is suitably used as, for example, an imaging device for a vehicle or a monitoring camera.

Abstract

Provided is a lens unit comprising: a lens frame for holding a lens; and a waterproof seal disposed between the lens frame and the lens or a member to be coupled. The waterproof seal includes an annular part extending in an annular shape, and a first protruding part extending from the annular part, and is configured so that the cross-sectional width in the radial direction of the first protruding part is smaller than the cross-sectional width in the radial direction of the annular part.

Description

レンズユニット及び撮像装置Lens unit and imaging device
　本発明の一態様は、撮像装置及び撮像装置などに利用されるレンズユニットに関する。 One embodiment of the present invention relates to an imaging device and a lens unit used for the imaging device and the like.
　レンズを保持するレンズ枠と撮像素子とを含んで構成される撮像装置では、レンズの間などから内部に水やゴミが侵入することを防止するために、防水シールを備える構成とすることがある。特に、雨や外気にさらされる時間が長くなる、監視カメラ、または車体の外側に設置される車載カメラなどでは、高い防水性能が必要となる。例えば、特許文献１には、車載カメラの防水性を確保するためにブロックを取り付けた構成が開示されている。 An image pickup apparatus configured to include a lens frame that holds a lens and an image pickup element may be configured to include a waterproof seal in order to prevent water and dust from entering inside from between the lenses. . In particular, in a surveillance camera or an in-vehicle camera installed outside the vehicle body that is exposed to rain or outside air, a high waterproof performance is required. For example, Patent Document 1 discloses a configuration in which a block is attached to ensure waterproofness of an in-vehicle camera.
特開２０１１－３５６８０号公報JP 2011-35680 A
　ところが、防水シールを用いて防水する構成では、組み立て時に円環状の防水シールがレンズ枠に引っかかり変形または移動してしまったりして、防水性能を保てない場合があった。また、防水シールをレンズ枠に組み込む際の作業において、防水シールをずれなく組み立てることが容易ではなかった。一方、防水性能を高めるために別部材を含む構成とすると、防水性を高めるために追加の構成が必要となるため、構成が複雑になったり、高コストな構成となったりすることがあった。 However, in the configuration where waterproofing is performed using a waterproof seal, the waterproof performance may not be maintained due to the annular waterproof seal being caught by the lens frame during assembly or being deformed or moved. Further, in the work for incorporating the waterproof seal into the lens frame, it is not easy to assemble the waterproof seal without deviation. On the other hand, if it is configured to include another member in order to enhance waterproof performance, an additional configuration is required to increase waterproofness, which may result in a complicated configuration or a high-cost configuration. .
　本発明は、上記の課題などを解決するために次のような手段を採る。なお、以下の説明において、発明の理解を容易にするために図面中の符号等を括弧書きで付記するが、本発明の各構成要素はこれらの付記したものに限定されるものではなく、当業者が技術的に理解しうる範囲にまで広く解釈されるべきものである。 The present invention adopts the following means in order to solve the above-mentioned problems. In the following description, in order to facilitate understanding of the invention, reference numerals and the like in the drawings are appended in parentheses, but each component of the present invention is not limited to these appendices. It should be construed broadly to the extent that contractors can technically understand.
　本発明の一の手段は、
　レンズを保持するレンズ枠（１）と、
　前記レンズ枠（１）と前記レンズ（１ａ）または連結対象部材との間に配置された防水シール（３）と、を備え、
　前記防水シール（３）は、
　　環状に延びる環状部（３ａ）と、
　　前記環状部から延びる第１突出部（３ｂ）と、を含み、
　　前記第１突出部（３ｂ）の径方向の断面の幅が、前記環状部の径方向の断面の幅よりも小さい、
　レンズユニットである。 One means of the present invention is to
A lens frame (1) for holding the lens;
A waterproof seal (3) disposed between the lens frame (1) and the lens (1a) or a connection target member;
The waterproof seal (3)
An annular portion (3a) extending annularly;
A first protrusion (3b) extending from the annular portion,
The width of the radial cross section of the first protrusion (3b) is smaller than the width of the radial cross section of the annular portion,
It is a lens unit.
　上記構成のレンズユニットでは、防止シールが第１突出部を有する構成としているため、防水シールが位置ずれを起こしづらくなり、組み立て時に防水シールがレンズ枠に引っかかって変形することなどを防止することができる。また、環状部に加え第１突出部を有する構成としたことで、防水性能を高めることができる。また、防水シール以外の追加部材を必要としないため、追加部材を有する構成と比較して安価な構成とすることができる。 In the lens unit having the above configuration, since the prevention seal has the first protrusion, it is difficult for the waterproof seal to be displaced, and it is possible to prevent the waterproof seal from being caught by the lens frame and being deformed during assembly. it can. Moreover, waterproofing performance can be improved by having the structure which has a 1st protrusion part in addition to an annular part. Moreover, since an additional member other than the waterproof seal is not required, the configuration can be made cheaper than the configuration having the additional member.
　上記レンズユニットにおいて、好ましくは、
　前記第１突出部（３ｂ）が環状に延びている。 In the lens unit, preferably,
The first protrusion (3b) extends in an annular shape.
　上記構成のレンズユニットによれば、環状の防水シールの全周にわたって位置ずれを起こしづらい構成にすることができ、防水シールがより位置ずれを起こしづらい構成とすることができる。 According to the lens unit having the above-described configuration, it is possible to make a configuration in which it is difficult for displacement to occur over the entire circumference of the annular waterproof seal, and it is possible to make a configuration in which the waterproof seal is less likely to cause displacement.
　上記レンズユニットにおいて、好ましくは、
　前記防水シールは、前記第１突出部とは逆方向に延びる第２突出部（３ｃ）をさらに含み、
　前記第２突出部の径方向の断面の幅が、前記環状部の径方向の断面の幅よりも小さい。 In the lens unit, preferably,
The waterproof seal further includes a second protrusion (3c) extending in a direction opposite to the first protrusion,
The width of the radial cross section of the second protrusion is smaller than the width of the radial cross section of the annular portion.
　上記構成のレンズユニットでは、防水シールが、第１突出部に加え第２突出部を有する構成とし、環状部の両側に突出部が配置されているため、さらに位置ずれを起こしづらい構成とすることができる。 In the lens unit having the above configuration, the waterproof seal has a second projecting portion in addition to the first projecting portion, and the projecting portions are arranged on both sides of the annular portion. Can do.
　上記レンズユニットにおいて、好ましくは、
　前記第２突出部が環状に延びている。 In the lens unit, preferably,
The second protrusion extends in an annular shape.
　上記構成のレンズユニットでは、環状部の両側の全周にわたって突出部が形成されているため、さらに防水シールが位置ずれを起こしづらい構成とすることができる。 In the lens unit configured as described above, since the projecting portions are formed over the entire circumference on both sides of the annular portion, the waterproof seal can be further configured to be less likely to be displaced.
　上記レンズユニットにおいて、好ましくは、
　前記防水シールがゴムで形成されている。 In the lens unit, preferably,
The waterproof seal is made of rubber.
　上記構成のレンズユニットによれば、高い防水性能を有する構成とすることができる。 According to the lens unit having the above configuration, a configuration having high waterproof performance can be obtained.
　また、本発明は上記いずれかのレンズユニットと撮像素子とを備える撮像装置を含む。 The present invention also includes an image pickup apparatus including any one of the lens units described above and an image pickup element.
　上記構成の撮像装置によれば、防水シールによって防水性能を高めたレンズユニットを含む構成としているため、防水性に優れた撮像装置とすることができる。 According to the imaging device having the above-described configuration, since the lens unit includes a lens unit whose waterproof performance is enhanced by a waterproof seal, the imaging device can be excellent in waterproofness.
図１は、実施形態の撮像装置の外観斜視図である。FIG. 1 is an external perspective view of the imaging apparatus according to the embodiment. 図２は、実施形態の撮像装置の分解斜視図である。FIG. 2 is an exploded perspective view of the imaging apparatus according to the embodiment. 図３は、実施形態の撮像装置の断面図である。FIG. 3 is a cross-sectional view of the imaging apparatus according to the embodiment. 図４は、実施形態の撮像装置において、レンズ枠と組み立てられる前の状態の防水シール周辺の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of the periphery of the waterproof seal before being assembled with the lens frame in the imaging apparatus of the embodiment. 図５は、実施形態の撮像装置におけて、レンズ枠と組み立てられた状態の防水シール周辺の拡大断面図である。FIG. 5 is an enlarged cross-sectional view of the periphery of the waterproof seal in an assembled state with the lens frame in the imaging apparatus of the embodiment. 図６は、変形例の撮像装置において、レンズ枠と組み立てられる前の状態の防水シール周辺の拡大断面図である。FIG. 6 is an enlarged cross-sectional view of the periphery of the waterproof seal in a state before being assembled with the lens frame in the imaging device of the modification. 図７は、変形例の撮像装置におけて、レンズ枠と組み立てられた状態の防水シール周辺の拡大断面図である。FIG. 7 is an enlarged cross-sectional view of the periphery of the waterproof seal in a state assembled with the lens frame in the imaging device of the modification.
　本発明の撮像装置は、レンズユニットに配置された防水シールに特徴を有しており、環状部に加えて突出部を有する構成としている点を特徴の一つとする。 The image pickup apparatus of the present invention is characterized by a waterproof seal disposed in the lens unit, and has a feature that it has a protruding portion in addition to the annular portion.
　なお、本明細書では、レンズの中心位置であって、撮像素子に入射する光の中心位置を「光軸」と称する。レンズに対して撮像素子とは反対側に位置する撮像対象を「被写体」と称する。撮像素子に対して被写体が位置する方向を「フロント側」または「光軸方向前方」と称し、被写体に対して撮像素子が位置する方向を「リア側」または「光軸方向後方」と称する。 In this specification, 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”.
　本発明に係る実施形態について、以下の構成に従って説明する。ただし、以下で説明する実施形態はあくまで本発明の一例にすぎず、本発明の技術的範囲を限定的に解釈させるものではない。なお、各図面において、同一の構成要素には同一の符号を付しており、その説明を省略する場合がある。
　１．実施形態
　２．変形例
　３．補足事項 An embodiment according to the present invention will be described according to the following configuration. However, the embodiment described below is merely an example of the present invention and does not limit the technical scope of the present invention. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and the description may be abbreviate | omitted.
1. Embodiment 2. FIG. Modified example 2. Supplementary matter
　＜１．実施形態＞
　本発明の実施形態について、図面を参照しながら説明する。図１は、本実施形態の撮像装置をフロント側から見た外観斜視図である。図２は、本実施形態の撮像装置をフロント側から見た分解斜視図である。図３は、本実施形態の撮像装置の断面図であって、撮像素子を省略した図である。 <1. Embodiment>
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of the imaging apparatus according to the present embodiment as viewed from the front side. FIG. 2 is an exploded perspective view of the imaging apparatus according to the present embodiment as viewed from the front side. FIG. 3 is a cross-sectional view of the imaging apparatus according to the present embodiment, in which the imaging element is omitted.
　図示されるように、本実施形態の撮像装置は、レンズ枠１、第１レンズ２、防水シール３、第１口径板４、第２レンズ５、第２口径板６、第３レンズ７、第３口径板８、第４レンズ９、及び撮像素子１０を含んで構成される。なお、本発明においては、レンズ枠１、及びレンズ枠１に保持される上記光学部材を含む構成を指して「レンズユニット」と称する。 As shown in the figure, the imaging apparatus of the present embodiment includes a lens frame 1, a first lens 2, a waterproof seal 3, a first aperture plate 4, a second lens 5, a second aperture plate 6, a third lens 7, A three-diameter plate 8, a fourth lens 9, and an image sensor 10 are included. In the present invention, the configuration including the lens frame 1 and the optical member held by the lens frame 1 is referred to as a “lens unit”.
　　＜レンズ枠１＞
　レンズ枠１は、光軸方向に伸びる円筒状の部材である。レンズ枠１は、第１レンズ２、防水シール３、第１口径板４、第２レンズ５、第２口径板６、第３レンズ７、第３口径板８、及び第４レンズ９を保持する。本明細書では、これらのレンズ及び口径板に加え、スペーサ、及び光学フィルタを総称して光学部材と称する。 <Lens frame 1>
The lens frame 1 is a cylindrical member that extends in the optical axis direction. The lens frame 1 holds the first lens 2, the waterproof seal 3, the first aperture plate 4, the second lens 5, the second aperture plate 6, the third lens 7, the third aperture plate 8, and the fourth lens 9. . In this specification, in addition to these lenses and aperture plates, spacers and optical filters are collectively referred to as optical members.
　　＜レンズ及び口径板＞
　第１レンズ２、第２レンズ５、及び第３レンズ７は、ガラスまたはプラスチック等の透過性を有する素材で形成され、光軸方向前方からの光を屈折させながら光軸方向後方に透過させる。第１口径板４、第２口径板６、及び第３口径板８は、それぞれ所定の径を有する開口部を有しており、通過する光の径方向外側の一部を遮蔽して、通過する光の最外周位置を決める。 <Lens and aperture plate>
The first lens 2, the second lens 5, and the third lens 7 are made of a transparent material such as glass or plastic, and transmit the light from the front in the optical axis direction to the rear in the optical axis direction. The first caliber plate 4, the second caliber plate 6, and the third caliber plate 8 each have an opening having a predetermined diameter, and shields and passes a part of the radially outer side of the light passing therethrough. Determine the outermost position of the light to be transmitted.
　本実施形態の構成には含まれないが、スペーサは、光軸方向に適度な厚みを有する板状で円環状の部材であり、各レンズの光軸方向の位置を調整する。スペーサは、光軸を含む中心部に開口部を有する。また、光学フィルタは、所定の波長の光を抑制または遮蔽する。光学フィルタは、例えば、通過する赤外線を抑制する赤外線カットフィルタなどが含まれる。これらの光学部材の数は、任意に変更可能である。 Although not included in the configuration of the present embodiment, 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 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.
　　＜防水シール３＞
　防水シール３は、円環状のゴムなどの弾性部材で形成され、第１レンズ２とレンズ枠１との間に配置される。防水シール３が配置されることで、第１レンズ２とレンズ枠１との隙間から、水などの液体や、ゴミを含んだ気体などの流体が内部に侵入（流入）することを防止する。 <Waterproof seal 3>
The waterproof seal 3 is formed of an elastic member such as an annular rubber, and is disposed between the first lens 2 and the lens frame 1. By disposing the waterproof seal 3, a liquid such as water or a fluid such as a gas containing dust is prevented from entering (inflowing) into the interior from the gap between the first lens 2 and the lens frame 1.
　図４及び図５は、本実施形態の防水シール３の周辺の拡大断面図であり、図４はレンズ枠１とレンズ２などが組み立てられる前の状態を示し、図５はレンズ枠１とレンズ２などが組み立てられた状態を示している。図４及び図５の断面図では、防水シール３の径方向の断面図が示される。 4 and 5 are enlarged sectional views of the periphery of the waterproof seal 3 according to the present embodiment. FIG. 4 shows a state before the lens frame 1 and the lens 2 are assembled. FIG. 5 shows the lens frame 1 and the lens. 2 etc. show the assembled state. 4 and 5 are cross-sectional views of the waterproof seal 3 in the radial direction.
　図４及び図５の断面図に示されるように、防水シール３は、環状部３ａと第１突出部３ｂとが組み合わせられた形状である。組み立てられる前の状態において（図４参照）、環状部３ａの断面は略円状である。第１突出部３ｂは、環状部３ａから矩形状に突出した部分である。第１突出部３ｂは、連結部における、第１レンズ２の面、及び組み立て時に第１レンズ２に対向するレンズ枠１の面と、平行な方向に延びる。本実施形態では、第１突出部３ｂは光軸方向前方に延びている。矩形状の第１突出部３ｂの幅は、環状部３ａの内径よりも小さい。なお、第１突出部３ｂの幅とは、防水シール３が配置されるレンズ枠１とレンズ２との間において、レンズ枠１とレンズ２との互いに対向する方向の長さを指す。 4 and 5, the waterproof seal 3 has a shape in which the annular portion 3a and the first protruding portion 3b are combined. In a state before assembly (see FIG. 4), the cross section of the annular portion 3a is substantially circular. The 1st protrusion part 3b is a part which protruded in the rectangular shape from the cyclic | annular part 3a. The first protrusion 3b extends in a direction parallel to the surface of the first lens 2 and the surface of the lens frame 1 that faces the first lens 2 at the time of assembly in the connecting portion. In the present embodiment, the first protrusion 3b extends forward in the optical axis direction. The width | variety of the rectangular 1st protrusion part 3b is smaller than the internal diameter of the cyclic | annular part 3a. The width of the first projecting portion 3b refers to the length in the direction in which the lens frame 1 and the lens 2 face each other between the lens frame 1 and the lens 2 where the waterproof seal 3 is disposed.
　図５に示されるように、レンズ枠１と第１レンズ２とが組み立てられた状態では、環状部３ａが押しつぶされて楕円状になっている。一方、第１突出部３ｂの形状は略変化しない。つまり、組み立て前の状態における環状部３ａの内径は、レンズ枠１と第１レンズ２との距離よりもやや大きい。レンズ枠１と第１レンズ２とが組み立てられる際、防水シール３の環状部３ａがレンズ枠１によって押され、回転方向に力を受けるが、第１突出部３ｂが第１レンズ２に当接することでストッパとして作用し、防水シール３の回転を規制する。 As shown in FIG. 5, in a state where the lens frame 1 and the first lens 2 are assembled, the annular portion 3a is crushed into an elliptical shape. On the other hand, the shape of the 1st protrusion part 3b does not change substantially. That is, the inner diameter of the annular portion 3 a in a state before assembly is slightly larger than the distance between the lens frame 1 and the first lens 2. When the lens frame 1 and the first lens 2 are assembled, the annular portion 3 a of the waterproof seal 3 is pushed by the lens frame 1 and receives a force in the rotational direction, but the first projecting portion 3 b abuts on the first lens 2. This acts as a stopper and restricts the rotation of the waterproof seal 3.
　本実施形態のレンズユニットによれば、第１レンズ２とレンズ枠１との間に配置された防止シール３が第１突出部３ｂを有する構成としているため、環状部３ａのみからなる構成と比較して、防水シール３が位置ずれを起こしづらくなり、組み立て時に防水シール３がレンズ枠１に引っかかって変形することなどを防止することができる。また、環状部３ａに加え第１突出部３ｂを有する構成としたことで、防水シール３の周囲に隙間が形成されることを防止することができ、防水性能を高めることができる。また、防水シール３以外の追加部材を必要としないため、追加部材を有する構成と比較して安価な構成とすることができる。 According to the lens unit of the present embodiment, since the prevention seal 3 disposed between the first lens 2 and the lens frame 1 has the first protruding portion 3b, it is compared with the configuration including only the annular portion 3a. Thus, the waterproof seal 3 is less likely to be displaced, and the waterproof seal 3 can be prevented from being caught by the lens frame 1 and being deformed during assembly. Moreover, since it was set as the structure which has the 1st protrusion part 3b in addition to the cyclic | annular part 3a, it can prevent that a clearance gap is formed around the waterproof seal 3, and can improve waterproof performance. Moreover, since an additional member other than the waterproof seal 3 is not required, the structure can be made cheaper than the structure having the additional member.
　なお、第１突出部３ｂは、必ずしも環状部３ａの全周にわたって形成されていなくても良く、不連続となる切欠き部分を有していたり、周方向に断続的に形成されていたりしても良い。このような構成でも、第１突出部３ｂが形成されることで一定の効果が得られる。 In addition, the 1st protrusion part 3b does not necessarily need to be formed over the perimeter of the cyclic | annular part 3a, has a notch part which becomes discontinuous, or is formed intermittently in the circumferential direction. Also good. Even in such a configuration, a certain effect can be obtained by forming the first protrusion 3b.
　また、本実施形態のレンズユニットによれば、第１突出部３ｂが環状に延び、環状部３ａの全周にわたって形成されている。この構成により、環状の防水シール３の全周にわたって位置ずれを起こしづらい構成にすることができ、防水シール３がより位置ずれを起こしづらい構成とすることができる。 Further, according to the lens unit of the present embodiment, the first protrusion 3b extends in an annular shape and is formed over the entire circumference of the annular portion 3a. With this configuration, it is possible to make it difficult to cause a positional shift over the entire circumference of the annular waterproof seal 3, and it is possible to make the configuration that the waterproof seal 3 is more difficult to cause a positional shift.
　また、本実施形態のレンズユニットでは、防水シール３がゴムで形成されているため、高い防水性能を有する構成とすることができる。 Further, in the lens unit of the present embodiment, since the waterproof seal 3 is formed of rubber, it can be configured to have high waterproof performance.
　また、本実施形態のレンズユニットが採用された撮像装置では、高い防水性能を有する撮像装置とすることができる。 In addition, the imaging apparatus employing the lens unit of the present embodiment can be an imaging apparatus having high waterproof performance.
　＜２．変形例＞
　次に、本発明における変形例について説明する。本変形例では、防水シール３の構成が実施形態と異なっており、それ以外の構成は同様である。以下、本変形例の防水シール３について具体的に説明する。 <2. Modification>
Next, modified examples of the present invention will be described. In this modification, the configuration of the waterproof seal 3 is different from that of the embodiment, and the other configurations are the same. Hereinafter, the waterproof seal 3 of the present modification will be specifically described.
　図６及び図７は、本変形例の防水シール３の周辺の拡大断面図であり、図６はレンズ枠１とレンズ２などが組み立てられる前の状態を示し、図７はレンズ枠１とレンズ２などが組み立てられた状態を示している。図６及び図７の断面図では、防水シール３の径方向の断面図が示される。 6 and 7 are enlarged cross-sectional views of the periphery of the waterproof seal 3 of this modification. FIG. 6 shows a state before the lens frame 1 and the lens 2 are assembled. FIG. 7 shows the lens frame 1 and the lens. 2 etc. show the assembled state. In the cross-sectional views of FIGS. 6 and 7, a cross-sectional view in the radial direction of the waterproof seal 3 is shown.
　図６及び図７の断面図に示されるように、防水シール３は、環状部３ａ、第１突出部３ｂ、及び第２突出部３ｃが組み合わせられた形状である。つまり、実施形態の防水シール３と比較して、第２突出部３ｃが追加された形状となっている。第２突出部３ｃは、第１突出部３ｂと同様に、連結部における、第１レンズ２の面、及び組み立て時に第１レンズ２に対向するレンズ枠１の面と、平行な方向に延びているが、第１突出部３ｂとは逆方向に延びる。第２突出部３ｃの幅は、環状部３ａの内径よりも小さい。 6 and 7, the waterproof seal 3 has a shape in which the annular portion 3a, the first projecting portion 3b, and the second projecting portion 3c are combined. That is, compared with the waterproof seal 3 of the embodiment, the second protrusion 3c is added. Similarly to the first protrusion 3b, the second protrusion 3c extends in a direction parallel to the surface of the first lens 2 and the surface of the lens frame 1 that faces the first lens 2 at the time of assembly. However, it extends in the opposite direction to the first protrusion 3b. The width of the second protrusion 3c is smaller than the inner diameter of the annular portion 3a.
　図７に示されるように、レンズ枠１と第１レンズ２とが組み立てられた状態では、環状部３ａが押しつぶされて楕円状になっている。一方、第１突出部３ｂ及び第２突出部３ｃの形状は略変化しない。レンズ枠１と第１レンズ２とが組み立てられる際、防水シール３の環状部３ａがレンズ枠１によって押され、回転方向に力を受けるが、第１突出部３ｂが第１レンズ２に当接し、第２突出部３ｃがレンズ枠１に当接することでストッパとして作用し、防水シール３の回転を規制する。 As shown in FIG. 7, in the state where the lens frame 1 and the first lens 2 are assembled, the annular portion 3a is crushed into an elliptical shape. On the other hand, the shape of the 1st protrusion part 3b and the 2nd protrusion part 3c does not change substantially. When the lens frame 1 and the first lens 2 are assembled, the annular portion 3a of the waterproof seal 3 is pushed by the lens frame 1 and receives a force in the rotational direction, but the first projecting portion 3b contacts the first lens 2. The second protrusion 3c abuts on the lens frame 1 to act as a stopper and restricts the rotation of the waterproof seal 3.
　本変形例のレンズユニットでは、防水シール３が、第１突出部３ｂに加え第２突出部３ｃを有する構成とし、環状部３ａの両側に突出部が配置されているため、実施形態の構成よりもさらに位置ずれを起こしづらい構成とすることができる。 In the lens unit of the present modified example, the waterproof seal 3 has the second projecting portion 3c in addition to the first projecting portion 3b, and the projecting portions are arranged on both sides of the annular portion 3a. Further, it is possible to make the configuration difficult to cause the positional deviation.
　本変形例のレンズユニットでは、防水シール３が環状部３ａの両側の全周にわたって突出部（第１突出部３ｂ及び第２突出部３ｃ）が形成されているため、さらに位置ずれを起こしづらい構成とすることができる。 In the lens unit of the present modification, the waterproof seal 3 is formed with protrusions (the first protrusion 3b and the second protrusion 3c) over the entire circumference on both sides of the annular portion 3a, so that it is more difficult to cause positional displacement. It can be.
　＜３．補足事項＞
　以上、本発明の実施形態についての具体的な説明を行った。上記説明では、あくまで一実施形態としての説明であって、本発明の範囲はこの一実施形態に留まらず、当業者が把握可能な範囲にまで広く解釈されるものである。 <3. Supplementary items>
The specific description of the embodiment of the present invention has been given above. In the above description, the description is merely an embodiment, and the scope of the present invention is not limited to this embodiment, but is broadly interpreted to the extent that a person skilled in the art can grasp.
　例えば、上記の撮像装置における防水シール３では、環状部３ａの断面が円状であり、第１突出部３ｂ及び第２突出部３ｃの断面が矩形状であったが、このような形状に限定されるものではない。防水シール３がレンズ枠１と第１レンズ２との隙間を埋める機能から、環状部３ａの断面は円状または楕円状が好ましいが、多角形状などの他の形状であっても良い。この場合、防水シール３は、環状部３ａの幅よりも、第１突出部３ｂ及び第２突出部３ｃの幅が小さくなるよう構成される。なお、環状部３ａの幅とは、第１突出部３ｂ及び第２突出部３ｃの幅と同様に、防水シール３が配置されるレンズ枠１とレンズ２との間において、レンズ枠１とレンズ２との互いに対向する方向の長さを指す。 For example, in the waterproof seal 3 in the above imaging device, the annular section 3a has a circular cross section, and the first projecting section 3b and the second projecting section 3c have rectangular sections. Is not to be done. From the function of the waterproof seal 3 filling the gap between the lens frame 1 and the first lens 2, the cross section of the annular portion 3a is preferably circular or elliptical, but may be other shapes such as a polygonal shape. In this case, the waterproof seal 3 is configured such that the widths of the first projecting portion 3b and the second projecting portion 3c are smaller than the width of the annular portion 3a. The width of the annular portion 3a is the same as the width of the first protruding portion 3b and the second protruding portion 3c, and between the lens frame 1 and the lens 2 where the waterproof seal 3 is disposed. 2 and the length of the direction opposite to each other.
　また、第１突出部３ｂ及び第２突出部３ｃは、防水シール３の回転や移動を規制するという機能から、矩形状またはこれに類似した形状が好ましいが、楕円状または円状などを採用しても良い。 Further, the first projecting portion 3b and the second projecting portion 3c are preferably rectangular or similar in shape from the function of restricting the rotation and movement of the waterproof seal 3, but they are oval or circular. May be.
　また、上記撮像装置では、レンズ枠１と第１レンズ２との対向面が光軸に水平な方向に延びる面であったため、第１突出部３ｂが光軸方向前方に延び、第２突出部３ｃが光軸方向後方に延びていたが、このような構成には限定されない。 In the imaging apparatus, since the opposing surface of the lens frame 1 and the first lens 2 is a surface extending in a direction horizontal to the optical axis, the first protrusion 3b extends forward in the optical axis direction, and the second protrusion Although 3c extended to the optical axis direction back, it is not limited to such a structure.
　また、防水シール３は、第１突出部３ｂ及び第２突出部３ｃに加え、第３突出部をさらに備えるような構成としても良い。 Moreover, the waterproof seal 3 may be configured to further include a third protrusion in addition to the first protrusion 3b and the second protrusion 3c.
　また、上記実施形態では、レンズ枠１が撮像装置のケースを兼ねている図を示しているが、レンズ枠１とは別に、レンズ枠１を保持するケースを備える構成としても良い。このとき、防水シール３が、レンズ枠１とケースとの間に配置される構成としても良い。なお、レンズ枠１とは別構成であるケースは、本発明の「連結対象部材」の一例である。 In the above-described embodiment, the lens frame 1 also serves as a case of the imaging device. However, in addition to the lens frame 1, a configuration that includes a case for holding the lens frame 1 may be used. At this time, the waterproof seal 3 may be arranged between the lens frame 1 and the case. The case having a configuration different from the lens frame 1 is an example of the “member to be connected” in the present invention.
　本発明は、例えば車載用または監視カメラ用の撮像装置などとして好適に利用される。 The present invention is suitably used as, for example, an imaging device for a vehicle or a monitoring camera.
１…レンズ枠
２…第１レンズ
３…防水シール
　３ａ…環状部
　３ｂ…第１突出部
　３ｃ…第２突出部
４…第１口径板
５…第２レンズ
６…第２口径板
７…第３レンズ
８…第３口径板
９…第４レンズ
１０…撮像素子 DESCRIPTION OF SYMBOLS 1 ... Lens frame 2 ... 1st lens 3 ... Waterproof seal 3a ... Annular part 3b ... 1st protrusion part 3c ... 2nd protrusion part 4 ... 1st aperture plate 5 ... 2nd lens 6 ... 2nd aperture plate 7 ... 3rd Lens 8 ... Third aperture plate 9 ... Fourth lens 10 ... Imaging element

Claims (6)

  1. 　レンズを保持するレンズ枠と、
    　前記レンズ枠と前記レンズまたは連結対象部材との間に配置された防水シールと、を備え、
    　前記防水シールは、
    　　環状に延びる環状部と、
    　　前記環状部から延びる第１突出部と、を含み、
    　　前記第１突出部の径方向の断面の幅が、前記環状部の径方向の断面の幅よりも小さい、
    　レンズユニット。     A lens frame for holding the lens;
    A waterproof seal disposed between the lens frame and the lens or a connection target member,
    The waterproof seal is
    An annular portion extending annularly;
    A first protrusion extending from the annular portion,
    The width of the radial cross section of the first protrusion is smaller than the width of the radial cross section of the annular portion,
    Lens unit.
  2. 　前記第１突出部が環状に延びている、
    　請求項１に記載のレンズユニット。     The first protrusion extends annularly;
    The lens unit according to claim 1.
  3. 　前記防水シールは、前記第１突出部とは逆方向に延びる第２突出部をさらに含み、
    　前記第２突出部の径方向の断面の幅が、前記環状部の径方向の断面の幅よりも小さい、
    　請求項１または請求項２に記載のレンズユニット。     The waterproof seal further includes a second protrusion that extends in a direction opposite to the first protrusion,
    The width of the radial section of the second protrusion is smaller than the width of the radial section of the annular portion,
    The lens unit according to claim 1 or 2.
  4. 　前記第２突出部が環状に延びている、
    　請求項３に記載のレンズユニット。     The second protrusion extends annularly;
    The lens unit according to claim 3.
  5. 　前記防水シールがゴムで形成されている、
    　請求項１から請求項４のいずれか１項に記載のレンズユニット。     The waterproof seal is formed of rubber;
    The lens unit according to any one of claims 1 to 4.
  6. 　請求項１から請求項５のいずれか１項に記載のレンズユニットと、撮像素子と、を備える、
    　撮像装置。     The lens unit according to any one of claims 1 to 5 and an image sensor.
    Imaging device.
PCT/JP2018/013583 2017-03-31 2018-03-30 Lens unit and imaging device WO2018181885A1 (en)

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JP6733108B2 (en) * 2018-12-27 2020-07-29 エスゼット ディージェイアイ テクノロジー カンパニー リミテッドＳｚ Ｄｊｉ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．，Ｌｔｄ Lens device, imaging device, moving object

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JPH07168265A (en) * 1993-12-14 1995-07-04 Konica Corp Waterproof case for camera
WO2000031585A1 (en) * 1998-11-25 2000-06-02 Fuji Photo Film Co., Ltd. Film unit with waterproof lens and waterproof ring
JP2004295119A (en) * 2003-03-11 2004-10-21 Kyocera Corp Imaging apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07168265A (en) * 1993-12-14 1995-07-04 Konica Corp Waterproof case for camera
WO2000031585A1 (en) * 1998-11-25 2000-06-02 Fuji Photo Film Co., Ltd. Film unit with waterproof lens and waterproof ring
JP2004295119A (en) * 2003-03-11 2004-10-21 Kyocera Corp Imaging apparatus

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