CN117270137A - Lens unit - Google Patents

Lens unit Download PDF

Info

Publication number
CN117270137A
CN117270137A CN202310566813.6A CN202310566813A CN117270137A CN 117270137 A CN117270137 A CN 117270137A CN 202310566813 A CN202310566813 A CN 202310566813A CN 117270137 A CN117270137 A CN 117270137A
Authority
CN
China
Prior art keywords
lens
optical axis
axis direction
lens unit
lens barrel
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.)
Pending
Application number
CN202310566813.6A
Other languages
Chinese (zh)
Inventor
井上道夫
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.)
Tamron Co Ltd
Original Assignee
Tamron Co Ltd
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 Tamron Co Ltd filed Critical Tamron Co Ltd
Publication of CN117270137A publication Critical patent/CN117270137A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/022Mountings, adjusting means, or light-tight connections, for optical elements for lenses lens and mount having complementary engagement means, e.g. screw/thread
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B17/00Details of cameras or camera bodies; Accessories therefor
    • G03B17/02Bodies
    • G03B17/12Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B30/00Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lens Barrels (AREA)

Abstract

课题在于,实现镜头单元的小型化,并且提高镜头单元的耐久性。解决手段在于,保持件(38)具有对多个透镜(14、16、18、20、22)进行按压的环状的按压部(42)。在保持件(38)中的按压部(42)的径向外侧,形成有向光轴方向的单侧凹陷的环状的凹部(44),在沿着光轴方向的截面中,凹部(44)形成为弯曲的形状。

The challenge is to reduce the size of the lens unit and improve the durability of the lens unit. A solution is that the holder (38) has an annular pressing portion (42) that presses the plurality of lenses (14, 16, 18, 20, 22). An annular recessed portion (44) that is recessed toward one side in the optical axis direction is formed on the radially outer side of the pressing portion (42) in the holder (38). In a cross section along the optical axis direction, the recessed portion (44) is ) is formed into a curved shape.

Description

镜头单元lens unit

技术领域Technical field

本发明涉及镜头单元。The present invention relates to lens units.

背景技术Background technique

作为用于车载相机等相机的镜头单元,有专利文献1所示的镜头单元。该在先技术所涉及的镜头单元具备大致圆筒状的镜筒(在专利文献1中被称为第一树脂制镜筒的内筒),镜筒在光轴方向上延伸。在镜筒内,沿着光轴方向设置有多个透镜。将多个透镜相对于镜筒固定的环状的保持件(在专利文献1中被称为第二树脂制镜筒)以螺纹接合的方式设置在镜筒的外周壁的基端侧。保持件具有从光轴方向的单侧(一侧)按压多个透镜的环状的按压部(在专利文献1中被称为保持部)。As a lens unit used for a camera such as a vehicle-mounted camera, there is a lens unit shown in Patent Document 1. The lens unit according to this prior art is provided with a substantially cylindrical lens barrel (an inner barrel called a first resin lens barrel in Patent Document 1) extending in the optical axis direction. In the lens barrel, a plurality of lenses are provided along the optical axis direction. An annular holder (referred to as a second resin lens barrel in Patent Document 1) that fixes a plurality of lenses to the lens barrel is provided on the proximal end side of the outer peripheral wall of the lens barrel in a threaded manner. The holder has an annular pressing part (referred to as a holding part in Patent Document 1) that presses the plurality of lenses from one side (one side) in the optical axis direction.

在先技术文献Prior technical documents

专利文献patent documents

专利文献1:日本特许第5686171号公报Patent Document 1: Japanese Patent No. 5686171

发明内容Contents of the invention

发明所要解决的课题The problem to be solved by the invention

另外,用于车载用相机的镜头单元例如在-40℃~120℃的宽温度范围中被使用。为了在该宽温度范围中将多个透镜稳定地保持在镜筒内,需要增大保持件的紧固力,来提高按压部的按压力。In addition, a lens unit used in a vehicle-mounted camera is used in a wide temperature range of -40°C to 120°C, for example. In order to stably hold multiple lenses in the lens barrel in this wide temperature range, it is necessary to increase the tightening force of the holder to increase the pressing force of the pressing portion.

但是,如果保持件的紧固力增大,则由于按压部周边处的过大的应力集中而产生裂纹,导致镜头单元的耐久性降低。另一方面,如果为了抑制按压部周边处的应力集中,而增大从按压部的内周面到保持件的外周面的距离来提高保持件的强度,则镜头单元的径向的尺寸扩大,导致镜头单元的大型化。However, if the tightening force of the holder is increased, cracks may occur due to excessive stress concentration around the pressing portion, resulting in reduced durability of the lens unit. On the other hand, if the distance from the inner circumferential surface of the pressing part to the outer circumferential surface of the holder is increased to increase the strength of the holder in order to suppress stress concentration around the pressing part, the radial dimension of the lens unit will be enlarged. This leads to an increase in the size of the lens unit.

于是,本发明的一个方式的目的在于,实现镜头单元的小型化,并且提高镜头单元的耐久性。Therefore, one aspect of the present invention aims to reduce the size of the lens unit and improve the durability of the lens unit.

用于解决课题的手段Means used to solve problems

为了上述的课题,本发明的一个方式具备:镜筒;多个透镜,沿着光轴方向设置在该镜筒内;以及环状的保持件,设置为与所述镜筒螺纹接合,具有对所述多个透镜进行按压的环状的按压部,将所述多个透镜相对于所述镜筒固定。在所述保持件中的所述按压部的径向外侧,形成有向所述光轴方向的单侧(一侧)凹陷的环状的凹部,在沿着所述光轴方向的截面中,所述凹部形成为弯曲的形状。In order to solve the above problem, one aspect of the present invention includes: a lens barrel; a plurality of lenses arranged in the lens barrel along the optical axis direction; and an annular holder arranged to be threadedly engaged with the lens barrel and having an opposite direction. An annular pressing portion for pressing the plurality of lenses fixes the plurality of lenses with respect to the lens barrel. An annular recessed portion that is recessed toward one side (one side) in the optical axis direction is formed on the radially outer side of the pressing portion in the holder. In a cross section along the optical axis direction, The recess is formed in a curved shape.

发明效果Invention effect

根据本发明的一个方式,能够实现镜头单元的小型化,并且提高镜头单元的耐久性。According to one aspect of the present invention, the lens unit can be miniaturized and the durability of the lens unit can be improved.

附图说明Description of the drawings

图1是实施方式1所涉及的镜头单元的沿着光轴方向的示意性的截面图。FIG. 1 is a schematic cross-sectional view along the optical axis direction of the lens unit according to Embodiment 1.

图2是图1中的II部的扩大截面图。FIG. 2 is an enlarged cross-sectional view of portion II in FIG. 1 .

图3是实施方式1的其他方式所涉及的镜头单元的部分扩大截面图。FIG. 3 is a partially enlarged cross-sectional view of the lens unit according to another aspect of Embodiment 1. FIG.

图4是实施方式2所涉及的镜头单元的沿着光轴方向的示意性的截面图。4 is a schematic cross-sectional view along the optical axis direction of the lens unit according to Embodiment 2.

图5是图4中的V部的扩大截面图。FIG. 5 is an enlarged cross-sectional view of the V portion in FIG. 4 .

图6是实施方式3所涉及的镜头单元的沿着光轴方向的示意性的截面图。6 is a schematic cross-sectional view along the optical axis direction of the lens unit according to Embodiment 3.

图7是图6中的VI部的扩大截面图。FIG. 7 is an enlarged cross-sectional view of portion VI in FIG. 6 .

具体实施方式Detailed ways

以下,参照附图说明本发明的实施方式。此外,在说明书及权利要求书中,光轴方向是指透镜的光轴方向、镜筒的光轴方向或者镜头单元的光轴方向。光轴方向的含义与镜筒的轴向或者镜头单元的轴向相同,在本发明的实施方式中是前后方向。径向是透镜的半径方向、镜筒的半径方向或者镜头单元的半径方向。径向外侧是指径向之中的从光轴(透镜或者镜头单元的中心线)远离的方向,径向内侧是指径向之中的向光轴接近的方向。在附图中,“AD”指的是光轴方向,“RDo”指的是径向外侧,“RDi”指的是径向内侧,“FF”指的是前侧或者前方向,“FR”指的是后侧或者后方向。Hereinafter, embodiments of the present invention will be described with reference to the drawings. Furthermore, in the specification and claims, the optical axis direction refers to the optical axis direction of the lens, the optical axis direction of the lens barrel, or the optical axis direction of the lens unit. The optical axis direction has the same meaning as the axial direction of the lens barrel or the axial direction of the lens unit, and is the front-to-back direction in the embodiment of the present invention. The radial direction is the radial direction of the lens, the radial direction of the lens barrel, or the radial direction of the lens unit. The radially outer side refers to the direction away from the optical axis (center line of the lens or lens unit) in the radial direction, and the radial inner side refers to the direction closer to the optical axis in the radial direction. In the drawings, "AD" refers to the optical axis direction, "RDo" refers to the radially outside, "RDi" refers to the radially inside, "FF" refers to the front side or front direction, and "FR" Refers to the back side or rear direction.

〔实施方式1〕[Embodiment 1]

参照图1及图2,说明实施方式1所涉及的镜头单元10的结构。图1是实施方式1所涉及的镜头单元10的沿着光轴方向的示意性的截面图。图2是图1中的II部的扩大截面图。The structure of the lens unit 10 according to Embodiment 1 will be described with reference to FIGS. 1 and 2 . FIG. 1 is a schematic cross-sectional view along the optical axis direction of the lens unit 10 according to Embodiment 1. FIG. 2 is an enlarged cross-sectional view of portion II in FIG. 1 .

(镜头单元10的概要)(Outline of lens unit 10)

如图1所示,实施方式1所涉及的镜头单元10是用于车载用相机的光学单元。能够相对于车载用相机的相机主体(未图示)拆装。镜头单元10使入射的光成像至相机主体内的摄像元件面(未图示)。此外,镜头单元10也可以不是用于车载用相机而是用于监视用相机等其他相机。As shown in FIG. 1 , the lens unit 10 according to Embodiment 1 is an optical unit used for a vehicle-mounted camera. It is detachable from the camera body (not shown) of the vehicle-mounted camera. The lens unit 10 forms an image of incident light onto an imaging element surface (not shown) in the camera body. Furthermore, the lens unit 10 may be used not for a vehicle-mounted camera but for other cameras such as a surveillance camera.

(镜筒12)(lens tube 12)

如图1所示,镜头单元10具备大致圆筒状的镜筒12,镜筒12在光轴方向上延伸。作为镜筒12的顶端侧的前端侧以及作为镜筒12的基端侧的后端侧分别开口。镜筒12例如由聚苯硫醚(PPS)树脂等合成树脂构成。镜筒12的顶端侧朝向被摄体(物体)侧,镜筒12的基端侧朝向成像侧。As shown in FIG. 1 , the lens unit 10 includes a substantially cylindrical lens barrel 12 extending in the optical axis direction. The front end side, which is the distal end side of the lens barrel 12, and the rear end side, which is the proximal end side of the lens barrel 12, are each open. The lens barrel 12 is made of synthetic resin such as polyphenylene sulfide (PPS) resin. The distal end side of the lens barrel 12 faces the subject (object) side, and the base end side of the lens barrel 12 faces the imaging side.

(多个透镜14、16、18、20、22)(Multiple lenses 14, 16, 18, 20, 22)

如图1所示,在镜筒12内,第1透镜14、第2透镜16、第3透镜18、第4透镜20及第5透镜22沿着光轴方向设置。换言之,在镜筒12内,设置有由多个透镜14、16、18、20、22构成的透镜组。换言之,镜筒12收容由多个透镜14、16、18、20、22构成的透镜组。As shown in FIG. 1 , in the lens barrel 12 , the first lens 14 , the second lens 16 , the third lens 18 , the fourth lens 20 and the fifth lens 22 are provided along the optical axis direction. In other words, a lens group composed of a plurality of lenses 14 , 16 , 18 , 20 , and 22 is provided in the lens barrel 12 . In other words, the lens barrel 12 accommodates a lens group composed of a plurality of lenses 14 , 16 , 18 , 20 , and 22 .

第1透镜14位于镜筒12内的顶端侧(前端侧),第1透镜14由玻璃或者塑料构成。第1透镜14的一方的透镜面14a及另一方的透镜面14b分别形成为相对于光轴方向垂直的平面状。在第1透镜14的2个透镜面14a、14b的周缘处各自被施以倒角加工。此外,也可以将第1透镜14的2个透镜面14a、14b之中的某一个透镜面形成为凸曲面状或者凹曲面状。The first lens 14 is located on the distal end side (front end side) of the lens barrel 12 and is made of glass or plastic. One lens surface 14 a and the other lens surface 14 b of the first lens 14 are each formed in a planar shape perpendicular to the optical axis direction. The peripheral edges of the two lens surfaces 14a and 14b of the first lens 14 are each chamfered. In addition, one of the two lens surfaces 14a and 14b of the first lens 14 may be formed into a convex curved surface or a concave curved surface.

第2透镜16与第1透镜14以接触的状态在光轴方向上相邻,由玻璃或者塑料构成。第2透镜16的一方的透镜面16a及另一方的透镜面16b分别形成为相对于光轴方向垂直的平面状。在第2透镜16的2个透镜面16a、16b的周缘处各自被施以倒角加工。第2透镜16的2个透镜面16a、16b之中的某一个透镜面也可以形成为凸曲面状或者凹曲面状。The second lens 16 and the first lens 14 are adjacent in the optical axis direction in a contact state, and are made of glass or plastic. One lens surface 16 a and the other lens surface 16 b of the second lens 16 are each formed in a planar shape perpendicular to the optical axis direction. The peripheral edges of the two lens surfaces 16a and 16b of the second lens 16 are each chamfered. One of the two lens surfaces 16a and 16b of the second lens 16 may be formed into a convex curved surface or a concave curved surface.

第3透镜18与第2透镜16以隔离的状态在光轴方向上相邻,由玻璃或者塑料构成。第3透镜18的一方的透镜面18a及另一方的透镜面18b分别形成为相对于光轴方向垂直的平面状。此外,第3透镜18的一方的透镜面18a及另一方的透镜面18b之中的某一个也可以形成为凸曲面状或者凹曲面状。The third lens 18 and the second lens 16 are spaced apart and adjacent to each other in the optical axis direction, and are made of glass or plastic. One lens surface 18 a and the other lens surface 18 b of the third lens 18 are each formed in a planar shape perpendicular to the optical axis direction. In addition, any one of the one lens surface 18 a and the other lens surface 18 b of the third lens 18 may be formed in a convex curved surface shape or a concave curved surface shape.

第4透镜20与第3透镜18以隔离的状态在光轴方向上相邻,由玻璃或者塑料构成。第4透镜20的一方的透镜面20a及另一方的透镜面20b分别形成为相对于光轴方向垂直的平面状。在第4透镜20的2个透镜面20a、20b的周缘处各自被施以倒角加工。此外,第4透镜20的2个透镜面20a也可以形成为凸曲面状或者凹曲面状。The fourth lens 20 and the third lens 18 are spaced apart and adjacent to each other in the optical axis direction, and are made of glass or plastic. One lens surface 20 a and the other lens surface 20 b of the fourth lens 20 are each formed in a planar shape perpendicular to the optical axis direction. The peripheral edges of the two lens surfaces 20a and 20b of the fourth lens 20 are each chamfered. In addition, the two lens surfaces 20a of the fourth lens 20 may be formed in a convex curved surface shape or a concave curved surface shape.

第5透镜22位于镜筒12内的基端侧(后端侧),而且与第4透镜20以隔离的状态在光轴方向上相邻。第5透镜22由玻璃或者塑料构成。第5透镜22的一方的透镜面22a形成为凸曲面状。第5透镜22的另一方的透镜面22b形成为相对于光轴方向垂直的平面状。在第5透镜22的另一方的透镜面22b的周缘处被施以倒角加工。此外,第5透镜22的另一方的透镜面22b也可以形成为凸曲面状或者凹曲面状。The fifth lens 22 is located on the proximal end side (rear end side) of the lens barrel 12 and is adjacent to the fourth lens 20 in the optical axis direction in a spaced state. The fifth lens 22 is made of glass or plastic. One lens surface 22a of the fifth lens 22 is formed in a convex curved surface. The other lens surface 22b of the fifth lens 22 is formed in a planar shape perpendicular to the optical axis direction. The peripheral edge of the other lens surface 22b of the fifth lens 22 is chamfered. In addition, the other lens surface 22b of the fifth lens 22 may be formed into a convex curved surface or a concave curved surface.

多个透镜14、16、18、20、22由形成在镜筒12的内周壁12i上的多个定位肋(未图示)相对于镜筒12在径向上定位。多个透镜14、16、18、20、22的中心分别与光轴一致。另外,在多个透镜14、16、18、20、22的2个透镜面14a、14b、16a、16b、18a、18b、20a、20b、22a、22b上,根据需要分别形成防反射膜、亲水膜、斥水膜等。The plurality of lenses 14, 16, 18, 20, and 22 are positioned in the radial direction relative to the lens barrel 12 by a plurality of positioning ribs (not shown) formed on the inner peripheral wall 12i of the lens barrel 12. The centers of the plurality of lenses 14, 16, 18, 20, and 22 are respectively aligned with the optical axis. In addition, on the two lens surfaces 14a, 14b, 16a, 16b, 18a, 18b, 20a, 20b, 22a, and 22b of the plurality of lenses 14, 16, 18, 20, and 22, an antireflection film and an anti-reflection film are formed respectively as necessary. Water film, water repellent film, etc.

(多个间隔件24、26、28)(Plural spacers 24, 26, 28)

如图1所示,在镜筒12内的第2透镜16与第3透镜18之间,设置有环状的第1间隔件24。第1间隔件24例如由聚苯硫醚树脂等合成树脂构成。第1间隔件24在其正面侧(前侧)具有对第2透镜16的外缘部进行保持的环状的保持面24g。第1间隔件24在其背面侧(后侧)具有对第3透镜18的外缘部进行保持的环状的保持面24p。As shown in FIG. 1 , an annular first spacer 24 is provided between the second lens 16 and the third lens 18 in the lens barrel 12 . The first spacer 24 is made of synthetic resin such as polyphenylene sulfide resin. The first spacer 24 has an annular holding surface 24g that holds the outer edge portion of the second lens 16 on its front side (front side). The first spacer 24 has an annular holding surface 24p that holds the outer edge portion of the third lens 18 on its back side (rear side).

在镜筒12内的第3透镜18与第4透镜20之间,设置有环状的第2间隔件26。第2间隔件26例如由聚苯硫醚树脂等合成树脂构成。第2间隔件26在其正面侧具有对第3透镜18的外缘部进行保持的环状的保持面26g。第2间隔件26在其背面侧具有对第4透镜20的外缘部进行保持的环状的保持面26p。An annular second spacer 26 is provided between the third lens 18 and the fourth lens 20 in the lens barrel 12 . The second spacer 26 is made of synthetic resin such as polyphenylene sulfide resin. The second spacer 26 has an annular holding surface 26g on its front side that holds the outer edge portion of the third lens 18. The second spacer 26 has an annular holding surface 26p on its back side that holds the outer edge portion of the fourth lens 20.

在镜筒12内的第4透镜20与第5透镜22之间,设置有环状的第3间隔件28。第3间隔件28例如由聚苯硫醚树脂等合成树脂构成。第3间隔件28在其正面侧具有对第4透镜20的外缘部进行保持的环状的保持面28g。第3间隔件28在其背面侧具有对第5透镜22的外缘部进行保持的环状的保持面28p。An annular third spacer 28 is provided between the fourth lens 20 and the fifth lens 22 in the lens barrel 12 . The third spacer 28 is made of synthetic resin such as polyphenylene sulfide resin, for example. The third spacer 28 has an annular holding surface 28g on its front side that holds the outer edge portion of the fourth lens 20 . The third spacer 28 has an annular holding surface 28p on its back side that holds the outer edge portion of the fifth lens 22 .

多个间隔件24、26、28由镜筒12的多个定位肋相对于镜筒12在径向上定位。The plurality of spacers 24 , 26 , 28 are positioned in the radial direction relative to the lens barrel 12 by a plurality of positioning ribs of the lens barrel 12 .

(滤波器保持部件30、红外线截止滤波器32)(Filter holding member 30, infrared cut filter 32)

在镜筒12内的第5透镜22的后侧,设置有环状的滤波器(滤光器)保持部件30。滤波器保持部件30例如由聚苯硫醚树脂等合成树脂构成。另外,在滤波器保持部件30的背面,作为滤光器设置有将近红外线区域的光去除的圆板状的红外线截止滤波器32。此外,也可以替代红外线截止滤波器32而使用将规定的频率成分的光去除的其他滤光器。另外,在多个透镜14、16、18、20、22之中的在光轴方向上相邻的任意透镜间,设置有对通过光量进行限制的环状的光阑部件(未图示)。A ring-shaped filter (optical filter) holding member 30 is provided on the rear side of the fifth lens 22 in the lens barrel 12 . The filter holding member 30 is made of synthetic resin such as polyphenylene sulfide resin. In addition, a disk-shaped infrared cut filter 32 that removes light in the near-infrared region is provided as an optical filter on the back surface of the filter holding member 30 . In addition, another optical filter that removes light of a predetermined frequency component may be used instead of the infrared cut filter 32 . In addition, an annular diaphragm member (not shown) that limits the amount of passing light is provided between any of the plurality of lenses 14, 16, 18, 20, and 22 adjacent in the optical axis direction.

(突起部34、外螺纹部36)(Protruding portion 34, external thread portion 36)

如图1所示,在镜筒12的内周壁12i的顶端侧(前端侧),形成有朝向径向内侧突出的环状的突起部34。突起部34从前方向卡止于第1透镜14的外缘部,在光轴方向上使多个透镜14、16、18、20、22相对于镜筒12定位。在镜筒12的外周壁12o的基端侧(后端侧),形成有外螺纹部36。As shown in FIG. 1 , an annular protrusion 34 protruding radially inward is formed on the distal end side (front end side) of the inner peripheral wall 12 i of the lens barrel 12 . The protruding portion 34 is engaged with the outer edge portion of the first lens 14 from the front direction to position the plurality of lenses 14 , 16 , 18 , 20 , and 22 relative to the lens barrel 12 in the optical axis direction. A male thread portion 36 is formed on the base end side (rear end side) of the outer peripheral wall 12 o of the lens barrel 12 .

(保持件38、内螺纹部40、按压部42)(Retainer 38, internal thread part 40, pressing part 42)

如图1及图2所示,将多个透镜14、16、18、20、22相对于镜筒12固定的环状的保持件38以螺纹接合的方式设置在镜筒12的外周壁12o的基端侧。在保持件38的内周面,形成有用于与镜筒12的外螺纹部36螺纹接合的内螺纹部40。保持件38例如由聚苯硫醚树脂等合成树脂构成。另外,保持件38具有从作为光轴方向的单侧(一侧)的后方向将多个透镜14、16、18、20、22向突起部34侧按压的环状的按压部42,按压部42能够弹性变形。按压部42通过与滤波器保持部件30的协同动作来夹持红外线截止滤波器32。按压部42经由红外线截止滤波器32、滤波器保持部件30、多个间隔件24、26、28,从后方向将多个透镜14、16、18、20、22向突起部34侧按压。As shown in FIGS. 1 and 2 , an annular holder 38 for fixing the plurality of lenses 14 , 16 , 18 , 20 , and 22 relative to the lens barrel 12 is provided on the outer peripheral wall 12 o of the lens barrel 12 in a threaded manner. Basal side. An internal thread portion 40 for threading engagement with the external thread portion 36 of the lens barrel 12 is formed on the inner peripheral surface of the holder 38 . The holder 38 is made of synthetic resin such as polyphenylene sulfide resin. In addition, the holder 38 has an annular pressing portion 42 that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 34 from one side (one side) of the optical axis direction. 42 can be elastically deformed. The pressing part 42 clamps the infrared cut filter 32 in cooperation with the filter holding member 30 . The pressing part 42 presses the plurality of lenses 14, 16, 18, 20, and 22 from the rear direction toward the protruding part 34 via the infrared cut filter 32, the filter holding member 30, and the plurality of spacers 24, 26, and 28.

按压部42的顶端面42t是与红外线截止滤波器32的周缘部接触的面,是将多个透镜14、16、18、20、22向突起部34侧按压的按压面。按压部42的顶端面42t相对于光轴方向正交。在沿着光轴方向的截面中,按压部42的内周面42i以越从顶端面42t远离则越位于径向外侧的方式相对于光轴方向倾斜。换言之,在沿着光轴方向的截面中,按压部42的内周面42i以越向顶端面42t接近则越位于径向内侧的方式相对于光轴方向倾斜。The tip surface 42t of the pressing portion 42 is a surface that contacts the peripheral edge portion of the infrared cut filter 32 and is a pressing surface that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 34 side. The tip surface 42t of the pressing part 42 is orthogonal to the optical axis direction. In a cross section along the optical axis direction, the inner peripheral surface 42i of the pressing portion 42 is inclined relative to the optical axis direction so as to be located radially outward as the distance from the tip surface 42t increases. In other words, in a cross section along the optical axis direction, the inner peripheral surface 42i of the pressing portion 42 is inclined relative to the optical axis direction so as to be located radially inward as it approaches the tip surface 42t.

根据上述的结构,通过紧固保持件38,按压部42从作为光轴方向的单侧的后方向经由多个间隔件24、26、28将多个透镜14、16、18、20、22向突起部34侧按压。由此,能够将多个透镜14、16、18、20、22相对于镜筒12固定,并稳定地保持在镜筒12内。According to the above-mentioned structure, by fastening the holder 38 , the pressing part 42 pushes the plurality of lenses 14 , 16 , 18 , 20 , 22 from the rear direction on one side which is the direction of the optical axis via the plurality of spacers 24 , 26 , 28 . The protruding portion 34 side is pressed. Thereby, the plurality of lenses 14 , 16 , 18 , 20 , and 22 can be fixed relative to the lens barrel 12 and stably held in the lens barrel 12 .

(凹部44)(recess 44)

如图1及图2所示,在保持件38中的按压部42的顶端面42t的径向外侧,形成有向作为光轴方向的单侧(一侧)的后方向凹陷的环状的凹部44。在沿着光轴方向的截面中,凹部44形成为以圆弧状弯曲的形状。凹部44具有1个或者多个曲率半径。凹部44的曲率半径例如设定为0.3mm以上。在凹部44具有多个曲率半径的情况下,凹部44的曲率半径是平均的曲率半径。凹部44的径向的宽度W比镜筒12的基端面(后端面)的径向的长度长。为了抑制镜头单元10的径向的扩大,凹部44的径向的宽度W例如设定为2mm以下。从按压部42的顶端面到凹部44的底部在光轴方向上的长度L例如设定为0.6mm以上。As shown in FIGS. 1 and 2 , an annular recessed portion is formed on the radially outer side of the tip surface 42t of the pressing portion 42 in the holder 38 and is recessed toward the rear direction of one side (one side) in the direction of the optical axis. 44. The recessed portion 44 is formed in a shape curved in an arc shape in a cross section along the optical axis direction. The recess 44 has one or more radii of curvature. The radius of curvature of the recessed portion 44 is set to 0.3 mm or more, for example. When the recessed portion 44 has a plurality of curvature radii, the curvature radius of the recessed portion 44 is the average curvature radius. The radial width W of the recess 44 is longer than the radial length of the base end surface (rear end surface) of the lens barrel 12 . In order to suppress the radial expansion of the lens unit 10 , the radial width W of the recessed portion 44 is set to 2 mm or less, for example. The length L in the optical axis direction from the top surface of the pressing part 42 to the bottom of the recessed part 44 is set to 0.6 mm or more, for example.

(作用效果)(Effect)

根据镜头单元10的结构,如上所述,在沿着光轴方向的截面中,凹部44形成为以圆弧状弯曲的形状。因此,即使不增大从按压部42的内周面42i到保持件38的外周面38o的距离而增大保持件38的紧固力,也能够抑制包括凹部44在内的按压部42周边处的应力集中。由此,能够实现镜头单元10的小型化,并且防止按压部42周边处产生裂纹,提高镜头单元10的耐久性。According to the structure of the lens unit 10 , as described above, the recessed portion 44 is formed in a shape curved in an arc shape in a cross section along the optical axis direction. Therefore, even if the distance from the inner circumferential surface 42i of the pressing part 42 to the outer circumferential surface 38o of the holder 38 is increased without increasing the tightening force of the holder 38, the surrounding areas of the pressing part 42 including the recessed part 44 can be suppressed. stress concentration. As a result, the lens unit 10 can be miniaturized, cracks can be prevented around the pressing portion 42 , and the durability of the lens unit 10 can be improved.

另外,根据镜头单元10的结构,如上所述,在沿着光轴方向的截面中,按压部42的内周面42i以越从按压部42的顶端面42t远离则越位于径向外侧的方式相对于光轴方向倾斜。因此,按压部42易于挠曲,能够在从低温时到高温时的宽温度范围中稳定地维持按压部42的光轴方向的按压力(轴力)。具体而言,在镜筒12的热膨胀率比透镜14等的热膨胀率大的情况下,存在按压部42的光轴方向的按压力在高温时降低并且在低温时上升的倾向。在镜筒12的热膨胀率比透镜14等的热膨胀率小的情况下,存在按压部42的光轴方向的按压力在高温时上升并且在低温时降低的倾向。因此,通过在常温时在使按压部42弯曲的状态下牢固地紧固保持件38,能够在从低温时到高温时的宽温度范围中稳定地维持按压部42的光轴方向的按压力。In addition, according to the structure of the lens unit 10 , as described above, in a cross section along the optical axis direction, the inner peripheral surface 42 i of the pressing portion 42 is located radially outward as the distance from the tip surface 42 t of the pressing portion 42 increases. Tilt relative to the optical axis. Therefore, the pressing part 42 is easily flexible, and the pressing force (axial force) of the pressing part 42 in the optical axis direction can be stably maintained in a wide temperature range from low temperature to high temperature. Specifically, when the thermal expansion coefficient of the lens barrel 12 is larger than that of the lens 14 or the like, the pressing force in the optical axis direction of the pressing portion 42 tends to decrease at high temperatures and increase at low temperatures. When the thermal expansion coefficient of the lens barrel 12 is smaller than that of the lens 14 or the like, the pressing force in the optical axis direction of the pressing portion 42 tends to increase at high temperatures and decrease at low temperatures. Therefore, by firmly fastening the holder 38 with the pressing portion 42 bent at normal temperature, the pressing force of the pressing portion 42 in the optical axis direction can be stably maintained in a wide temperature range from low temperature to high temperature.

〔实施方式1的其他方式〕[Other aspects of Embodiment 1]

参照图3说明实施方式1的其他方式所涉及的镜头单元10A的结构。图3是实施方式1的其他方式所涉及的镜头单元10A的部分扩大截面图。The structure of the lens unit 10A according to another aspect of Embodiment 1 will be described with reference to FIG. 3 . FIG. 3 is a partially enlarged cross-sectional view of the lens unit 10A according to another aspect of Embodiment 1.

(镜头单元10A的概要)(Outline of lens unit 10A)

如图3所示,实施方式1的其他方式所涉及的镜头单元10A是用于车载用相机的光学单元,使入射的光成像至相机主体内的摄像元件面(未图示)。镜头单元10A除了一部分之外具有与实施方式1所涉及的镜头单元10(参照图2)同样的结构。仅说明镜头单元10A的结构之中的与镜头单元10的结构的不同点。此外,为了便于说明,关于与本实施方式中说明的部件具有相同的功能的部件,附加相同的标记,不反复对其进行说明。As shown in FIG. 3 , a lens unit 10A according to another aspect of Embodiment 1 is an optical unit used for a vehicle-mounted camera, and forms an image of incident light on an imaging element surface (not shown) in the camera body. The lens unit 10A has the same structure as the lens unit 10 according to Embodiment 1 (see FIG. 2 ) except for a part. Only the differences between the structure of the lens unit 10A and the structure of the lens unit 10 will be described. In addition, for convenience of explanation, components having the same functions as those described in the present embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

(第1弯曲部44a、第2弯曲部44b、直线部44c)(First curved portion 44a, second curved portion 44b, straight portion 44c)

如图3所示,在沿着光轴方向的截面中,凹部44形成为弯曲的形状。凹部44具有:位于径向内侧而且以圆弧状弯曲的第1弯曲部44a、位于径向外侧而且以圆弧状弯曲的第2弯曲部44b、以及位于第1弯曲部44a与第2弯曲部44b之间的直线部44c。弯曲的形状的含义包括一部分具有直线部44c的情况。As shown in FIG. 3 , the recessed portion 44 is formed in a curved shape in a cross section along the optical axis direction. The recessed portion 44 has a first curved portion 44a located radially inside and curved in an arc shape, a second curved portion 44b located radially outside and curved in an arc shape, and a first curved portion 44a and a second curved portion located between the radially outer side and the first curved portion 44a. The straight portion 44c between 44b. The meaning of the curved shape includes a case where a part has a straight portion 44c.

凹部44的第1弯曲部44a与按压部42相邻,具有1个或者多个曲率半径。凹部44的第1弯曲部44a的曲率半径例如设定为0.3mm以上。凹部44的第2弯曲部44b具有1个或者多个曲率半径。凹部44的第2弯曲部44b的曲率半径例如设定为0.3mm以上。凹部44的直线部44c与第1弯曲部44a和第2弯曲部44b平滑地相连。The first curved portion 44a of the recessed portion 44 is adjacent to the pressing portion 42 and has one or more curvature radii. The curvature radius of the first curved portion 44a of the recessed portion 44 is set to 0.3 mm or more, for example. The second curved portion 44b of the recessed portion 44 has one or more curvature radii. The curvature radius of the second curved portion 44b of the recessed portion 44 is set to 0.3 mm or more, for example. The straight portion 44c of the recessed portion 44 is smoothly connected to the first curved portion 44a and the second curved portion 44b.

(作用效果)(Effect)

接下来,说明实施方式1的其他方式的作用效果。Next, the operation and effect of other aspects of Embodiment 1 will be described.

在镜头单元10A中,如上所述,凹部44具有位于第1弯曲部44a与第2弯曲部44b之间的直线部44c。因此,在沿着光轴方向的截面中,与凹部44形成为圆弧状的情况相比,能够缩短凹部44的径向的宽度。由此,与凹部44的径向的宽度的缩短量相应地,能够促进镜头单元10A的小型化。In the lens unit 10A, as described above, the recessed portion 44 has the straight portion 44c located between the first curved portion 44a and the second curved portion 44b. Therefore, in the cross section along the optical axis direction, the radial width of the recessed portion 44 can be shortened compared with the case where the recessed portion 44 is formed in an arc shape. Accordingly, the size reduction of the lens unit 10A can be promoted in accordance with the shortening of the radial width of the recessed portion 44 .

另外,在实施方式1的其他方式中也能够起到与实施方式1同样的作用效果。In addition, the same functions and effects as those of Embodiment 1 can also be achieved in other aspects of Embodiment 1.

〔实施方式2〕[Embodiment 2]

参照图4及图5,说明实施方式2所涉及的镜头单元46的结构。图4是实施方式2所涉及的镜头单元46的沿着光轴方向的示意性的截面图。图5是图4中的V部的扩大截面图。The structure of the lens unit 46 according to Embodiment 2 will be described with reference to FIGS. 4 and 5 . FIG. 4 is a schematic cross-sectional view along the optical axis direction of the lens unit 46 according to Embodiment 2. FIG. 5 is an enlarged cross-sectional view of the V portion in FIG. 4 .

(镜头单元46的概要)(Outline of lens unit 46)

如图4所示,实施方式2所涉及的镜头单元46是用于车载用相机的光学单元,使入射的光成像至相机主体内的摄像元件面(未图示)。镜头单元46除了一部分之外,与实施方式1所涉及的镜头单元10(参照图1及图2)具有同样的结构。仅说明镜头单元46的结构之中的与镜头单元10的结构的不同点。此外,为了便于说明,关于与本实施方式中说明的部件具有相同的功能的部件,附加相同的标记,不反复对其进行说明。As shown in FIG. 4 , the lens unit 46 according to Embodiment 2 is an optical unit used for a vehicle-mounted camera, and forms an image of incident light on an imaging element surface (not shown) in the camera body. The lens unit 46 has the same structure as the lens unit 10 according to Embodiment 1 (see FIGS. 1 and 2 ) except for a part. Only the differences between the structure of the lens unit 46 and the structure of the lens unit 10 will be described. In addition, for convenience of explanation, components having the same functions as those described in the present embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

(内螺纹部48、保持件50、外螺纹部52、按压部54)(Female thread part 48, holder 50, external thread part 52, pressing part 54)

如图4及图5所示,在镜筒12的外周壁12o的基端侧(后端侧),形成有内螺纹部48。将多个透镜14、16、18、20、22相对于镜筒12固定的环状的保持件50以螺纹接合的方式设置在镜筒12的内周壁12i的基端侧。在保持件50的外周面,形成有用于与镜筒12的内螺纹部48螺纹接合的外螺纹部52。保持件50例如由聚苯硫醚树脂等合成树脂构成。另外,保持件50具有从作为光轴方向的单侧(一侧)的后方向将多个透镜14、16、18、20、22向突起部34侧按压的环状的按压部54,按压部54能够弹性变形。按压部54通过与滤波器保持部件30的协同动作来夹持红外线截止滤波器32。按压部54经由红外线截止滤波器32、滤波器保持部件30、多个间隔件24、26、28,从后方向将多个透镜14、16、18、20、22向突起部34侧按压。As shown in FIGS. 4 and 5 , an internal thread portion 48 is formed on the base end side (rear end side) of the outer peripheral wall 12 o of the lens barrel 12 . An annular holder 50 for fixing the plurality of lenses 14 , 16 , 18 , 20 , and 22 to the lens barrel 12 is threadedly provided on the base end side of the inner peripheral wall 12 i of the lens barrel 12 . An external thread portion 52 for threading engagement with the internal thread portion 48 of the lens barrel 12 is formed on the outer peripheral surface of the holder 50 . The holder 50 is made of synthetic resin such as polyphenylene sulfide resin. In addition, the holder 50 has an annular pressing portion 54 that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 34 from one side (one side) of the optical axis direction. 54 can be elastically deformed. The pressing part 54 clamps the infrared cut filter 32 in cooperation with the filter holding member 30 . The pressing part 54 presses the plurality of lenses 14, 16, 18, 20, and 22 from the rear direction toward the protruding part 34 via the infrared cut filter 32, the filter holding member 30, and the plurality of spacers 24, 26, and 28.

按压部54的顶端面54t是与红外线截止滤波器32的周缘部接触的面,是将多个透镜14、16、18、20、22向突起部34侧按压的按压面。按压部54的顶端面54t相对于光轴方向正交。在沿着光轴方向的截面中,按压部54的内周面54i以越从顶端面54t远离则越位于径向外侧的方式相对于光轴方向倾斜。换言之,在沿着光轴方向的截面中,按压部54的内周面54i以越向顶端面54t接近则越位于径向内侧的方式相对于光轴方向倾斜。The tip surface 54t of the pressing portion 54 is a surface that contacts the peripheral edge of the infrared cut filter 32 and is a pressing surface that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 34 side. The tip surface 54t of the pressing part 54 is orthogonal to the optical axis direction. In a cross section along the optical axis direction, the inner peripheral surface 54i of the pressing portion 54 is inclined relative to the optical axis direction so as to be located radially outward as the distance from the tip surface 54t increases. In other words, in a cross section along the optical axis direction, the inner peripheral surface 54i of the pressing portion 54 is inclined relative to the optical axis direction so as to be located radially inward as it approaches the tip surface 54t.

根据上述的结构,通过紧固保持件50,按压部54从作为光轴方向的单侧的后方向经由多个间隔件24、26、28将多个透镜14、16、18、20、22向突起部34侧按压。由此,能够将多个透镜14、16、18、20、22相对于镜筒12固定,并稳定地保持在镜筒12内。According to the above-mentioned structure, by fastening the holder 50 , the pressing portion 54 pushes the plurality of lenses 14 , 16 , 18 , 20 , 22 from the rear direction on one side as the optical axis direction via the plurality of spacers 24 , 26 , 28 . The protruding portion 34 side is pressed. Thereby, the plurality of lenses 14 , 16 , 18 , 20 , and 22 can be fixed relative to the lens barrel 12 and stably held in the lens barrel 12 .

(凹部56)(recess 56)

如图4及图5所示,在保持件50中的按压部54的顶端面54t的径向外侧,形成有向作为光轴方向的单侧(一侧)的后方向凹陷的环状的凹部44。在沿着光轴方向的截面中,凹部56形成为弯曲的形状,具体而言形成为U形,且朝向开口侧扩大。换言之,凹部56具有位于径向内侧的第1直线部、位于径向外侧的第2直线部、以及位于第1直线部与第2直线部之间而且以圆弧状弯曲的弯曲部。凹部56的底部的曲率半径例如设定为0.3mm以上。为了抑制镜头单元46的径向的扩大,凹部56的径向的宽度W例如设定为2mm以下。从按压部54的顶端面到凹部56的底部在光轴方向上的长度L例如设定为0.6mm以上。As shown in FIGS. 4 and 5 , an annular recessed portion is formed on the radially outer side of the tip surface 54t of the pressing portion 54 in the holder 50 and is recessed in the rear direction of one side (one side) in the direction of the optical axis. 44. In a cross section along the optical axis direction, the recessed portion 56 is formed in a curved shape, specifically a U-shape, and is expanded toward the opening side. In other words, the recessed portion 56 has a first straight portion located radially inside, a second straight portion located radially outside, and a curved portion located between the first straight portion and the second straight portion and curved in an arc shape. The radius of curvature of the bottom of the recess 56 is set to 0.3 mm or more, for example. In order to suppress the radial expansion of the lens unit 46 , the radial width W of the recessed portion 56 is set to 2 mm or less, for example. The length L in the optical axis direction from the top surface of the pressing part 54 to the bottom of the recessed part 56 is set to 0.6 mm or more, for example.

(作用效果)(Effect)

接下来,说明实施方式2的作用效果。Next, the operation and effect of Embodiment 2 will be described.

根据镜头单元46的结构,如上所述,在沿着光轴方向的截面中,凹部56形成为以圆弧状弯曲的形状。因此,即使不增大从按压部54的内周面54i到保持件50的外周面50o的距离而增大保持件50的紧固力,也能够抑制包括凹部56在内的按压部54周边处的应力集中。由此,能够实现镜头单元46的小型化,并且防止按压部54周边处产生裂纹,提高镜头单元46的耐久性。According to the structure of the lens unit 46 , as described above, the recessed portion 56 is formed in a shape curved in an arc shape in a cross section along the optical axis direction. Therefore, even if the tightening force of the holder 50 is increased without increasing the distance from the inner peripheral surface 54i of the pressing part 54 to the outer peripheral surface 50o of the holder 50, it is possible to suppress the surrounding areas of the pressing part 54 including the recessed part 56. stress concentration. This allows the lens unit 46 to be miniaturized, prevents cracks from occurring around the pressing portion 54 , and improves the durability of the lens unit 46 .

特别是,在沿着光轴方向的截面中,凹部56形成为U形而且朝向开口侧扩大。因此,在沿着光轴方向的截面中,与凹部56形成为圆弧状的情况相比,能够缩短凹部56的径向的宽度。由此,与凹部56的径向的宽度的缩短量相应地,能够促进镜头单元46的小型化。In particular, in the cross section along the optical axis direction, the recessed portion 56 is formed in a U shape and expands toward the opening side. Therefore, in the cross section along the optical axis direction, the radial width of the recessed portion 56 can be shortened compared with the case where the recessed portion 56 is formed in an arc shape. Accordingly, the size reduction of the lens unit 46 can be promoted in accordance with the shortening of the radial width of the recessed portion 56 .

另外,根据镜头单元46的结构,如上所述,在沿着光轴方向的截面中,按压部54的内周面54i以越从顶端面54t远离则越位于径向外侧的方式相对于光轴方向倾斜。因此,按压部54易于挠曲,能够在从低温时到高温时的宽温度范围中稳定地维持按压部54的光轴方向的按压力。In addition, according to the structure of the lens unit 46, as described above, in a cross section along the optical axis direction, the inner peripheral surface 54i of the pressing portion 54 is positioned radially outward with respect to the optical axis as it is farther away from the tip surface 54t. The direction is tilted. Therefore, the pressing portion 54 is easily deflected, and the pressing force of the pressing portion 54 in the optical axis direction can be stably maintained in a wide temperature range from low temperature to high temperature.

〔实施方式3〕[Embodiment 3]

参照图6及图7,说明实施方式3所涉及的镜头单元58的结构。图6是实施方式3所涉及的镜头单元58的沿着光轴方向的示意性的截面图。图7是图6中的VII部的扩大截面图。The structure of the lens unit 58 according to Embodiment 3 will be described with reference to FIGS. 6 and 7 . FIG. 6 is a schematic cross-sectional view along the optical axis direction of the lens unit 58 according to Embodiment 3. FIG. 7 is an enlarged cross-sectional view of portion VII in FIG. 6 .

(镜头单元58的概要)(Outline of lens unit 58)

如图6所示,实施方式3所涉及的镜头单元58是用于车载用相机的光学单元,使入射的光成像至相机主体内的摄像元件面(未图示)。镜头单元58除了一部分之外,与实施方式1所涉及的镜头单元10(参照图1及图2)具有同样的结构。仅说明镜头单元58的结构之中的与镜头单元10的结构的不同点。此外,为了便于说明,关于与本实施方式中说明的部件具有相同的功能的部件,附加相同的标记,不反复对其进行说明。As shown in FIG. 6 , the lens unit 58 according to Embodiment 3 is an optical unit used for a vehicle-mounted camera, and forms an image of incident light on an imaging element surface (not shown) in the camera body. The lens unit 58 has the same structure as the lens unit 10 according to Embodiment 1 (see FIGS. 1 and 2 ) except for a part. Only the differences between the structure of the lens unit 58 and the structure of the lens unit 10 will be described. In addition, for convenience of explanation, components having the same functions as those described in the present embodiment are denoted by the same reference numerals, and description thereof will not be repeated.

(突起部60、外螺纹部62)(Protruding portion 60, external thread portion 62)

如图6所示,在镜筒12的内周壁12i的基端侧(后端侧),形成有朝向径向内侧突出的环状的突起部60。突起部60从后方向卡止于红外线截止滤波器32的外缘部,在光轴方向上使多个透镜14、16、18、20、22相对于镜筒12定位。在镜筒12的外周壁12o的顶端侧(前端侧)形成有外螺纹部62。As shown in FIG. 6 , an annular protrusion 60 protruding radially inward is formed on the base end side (rear end side) of the inner peripheral wall 12 i of the lens barrel 12 . The protrusion 60 is engaged with the outer edge of the infrared cut filter 32 from the rear direction to position the plurality of lenses 14 , 16 , 18 , 20 , and 22 relative to the lens barrel 12 in the optical axis direction. A male thread portion 62 is formed on the distal end side (front end side) of the outer peripheral wall 12 o of the lens barrel 12 .

(保持件64、内螺纹部66、按压部68)(Holder 64, Female Thread Part 66, Pressing Part 68)

如图6及图7所示,将多个透镜14、16、18、20、22相对于镜筒12固定的环状的保持件64以螺纹接合的方式设置在镜筒12的外周壁12o的顶端侧。在保持件64的内周面,形成有用于与镜筒12的外螺纹部62螺纹接合的内螺纹部66。保持件64例如由聚苯硫醚树脂等合成树脂构成。另外,保持件64具有从作为光轴方向的单侧(一侧)的前方向将多个透镜14、16、18、20、22向突起部34侧按压的环状的按压部68,按压部68能够弹性变形。按压部68经由多个间隔件24、26、28、红外线截止滤波器32、滤波器保持部件30,从前方向将多个透镜14、16、18、20、22向突起部60侧按压。As shown in FIGS. 6 and 7 , an annular holder 64 for fixing the plurality of lenses 14 , 16 , 18 , 20 , and 22 relative to the lens barrel 12 is provided on the outer peripheral wall 12 o of the lens barrel 12 in a threaded manner. Top side. An internal thread portion 66 for threading engagement with the external thread portion 62 of the lens barrel 12 is formed on the inner peripheral surface of the holder 64 . The holder 64 is made of synthetic resin such as polyphenylene sulfide resin. In addition, the holder 64 has an annular pressing portion 68 that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 34 from the front direction of one side (one side) as the optical axis direction. 68 can be elastically deformed. The pressing portion 68 presses the plurality of lenses 14, 16, 18, 20, and 22 from the front toward the protruding portion 60 via the plurality of spacers 24, 26, and 28, the infrared cut filter 32, and the filter holding member 30.

按压部68的顶端面68t是与第1透镜14的周缘部接触的面,是将多个透镜14、16、18、20、22向突起部60侧按压的按压面。按压部68的顶端面68t相对于光轴方向正交。在沿着光轴方向的截面中,按压部68的内周面68i以越从顶端面68t远离则越位于径向外侧的方式相对于光轴方向倾斜。换言之,在沿着光轴方向的截面中,按压部68的内周面68i以越向顶端面68t接近则越位于径向内侧的方式相对于光轴方向倾斜。The tip surface 68t of the pressing portion 68 is a surface that contacts the peripheral portion of the first lens 14 and is a pressing surface that presses the plurality of lenses 14, 16, 18, 20, and 22 toward the protruding portion 60 side. The tip surface 68t of the pressing part 68 is orthogonal to the optical axis direction. In a cross section along the optical axis direction, the inner peripheral surface 68i of the pressing portion 68 is inclined relative to the optical axis direction so as to be located radially outward as the distance from the tip surface 68t increases. In other words, in a cross section along the optical axis direction, the inner peripheral surface 68i of the pressing portion 68 is inclined relative to the optical axis direction so as to be located radially inward as it approaches the tip surface 68t.

根据上述的结构,通过紧固保持件64,按压部68从作为光轴方向的单侧的前方向经由多个间隔件24、26、28将多个透镜14、16、18、20、22向突起部60侧按压。由此,能够将多个透镜14、16、18、20、22相对于镜筒12固定,并稳定地保持在镜筒12内。According to the above structure, by fastening the holder 64 , the pressing portion 68 pushes the plurality of lenses 14 , 16 , 18 , 20 , 22 from the front direction on one side which is the optical axis direction via the plurality of spacers 24 , 26 , 28 . The protruding portion 60 side is pressed. Thereby, the plurality of lenses 14 , 16 , 18 , 20 , and 22 can be fixed relative to the lens barrel 12 and stably held in the lens barrel 12 .

(凹部70)(recess 70)

如图6及图7所示,在保持件64中的按压部68的顶端面68t的径向外侧,形成有向作为光轴方向的单侧(一侧)的前方向凹陷的环状的凹部70。在沿着光轴方向的截面中,凹部70形成为以圆弧状弯曲的形状。凹部70具有1个或者多个曲率半径。凹部70的曲率半径例如设定为0.3mm以上。在凹部70具有多个曲率半径的情况下,凹部70的曲率半径是平均的曲率半径。凹部70的径向的宽度W比镜筒12的顶端面(前端面)的径向的长度长。为了抑制镜头单元58的径向的扩大,凹部70的径向的宽度W例如设定为2mm以下。从按压部68的顶端面到凹部70的底部在光轴方向上的长度L例如设定为0.6mm以上。As shown in FIGS. 6 and 7 , an annular recessed portion that is recessed in the forward direction of one side (one side) that is the direction of the optical axis is formed radially outside the tip surface 68t of the pressing portion 68 in the holder 64 . 70. The recess 70 is formed in a shape curved in an arc shape in a cross section along the optical axis direction. The recess 70 has one or more radii of curvature. The curvature radius of the recessed portion 70 is set to 0.3 mm or more, for example. When the recessed portion 70 has a plurality of curvature radii, the curvature radius of the recessed portion 70 is the average curvature radius. The radial width W of the recess 70 is longer than the radial length of the top end surface (front end surface) of the lens barrel 12 . In order to suppress the radial expansion of the lens unit 58 , the radial width W of the recessed portion 70 is set to 2 mm or less, for example. The length L in the optical axis direction from the top surface of the pressing part 68 to the bottom of the recessed part 70 is set to 0.6 mm or more, for example.

(作用效果)(Effect)

接下来,说明实施方式3的作用效果。Next, the operation and effect of Embodiment 3 will be described.

根据镜头单元58的结构,如上所述,在沿着光轴方向的截面中,凹部70形成为以圆弧状弯曲的形状。因此,即使不增大从按压部68的内周面68i到保持件64的外周面64o的距离而增大保持件64的紧固力,也能够抑制包括凹部70在内的按压部68周边处的应力集中。由此,能够实现镜头单元58的小型化,防止按压部68周边处产生裂纹,提高镜头单元58的耐久性。According to the structure of the lens unit 58 , as described above, the recessed portion 70 is formed in a shape curved in an arc shape in a cross section along the optical axis direction. Therefore, even if the distance from the inner circumferential surface 68i of the pressing part 68 to the outer circumferential surface 64o of the holder 64 is not increased and the tightening force of the holder 64 is increased, the surrounding areas of the pressing part 68 including the recessed part 70 can be suppressed. stress concentration. Thereby, the lens unit 58 can be miniaturized, cracks can be prevented around the pressing portion 68 , and the durability of the lens unit 58 can be improved.

另外,根据镜头单元58的结构,如上所述,在沿着光轴方向的截面中,按压部68的内周面68i以越从顶端面68t远离则越位于径向外侧的方式相对于光轴方向倾斜。因此,按压部68易于挠曲,能够在从低温时到高温时的宽温度范围中稳定地维持按压部68的光轴方向的按压力。In addition, according to the structure of the lens unit 58, as described above, in a cross section along the optical axis direction, the inner peripheral surface 68i of the pressing portion 68 is located radially outward with respect to the optical axis as it is farther away from the tip surface 68t. The direction is tilted. Therefore, the pressing portion 68 is easily deflected, and the pressing force of the pressing portion 68 in the optical axis direction can be stably maintained in a wide temperature range from low temperature to high temperature.

〔其他实施方式〕[Other embodiments]

虽然省略图示,在镜头单元10中,也可以省略突起部34,而在镜筒12的内周壁12i的中间部形成朝向径向内侧突出的环状的中间突起部。在该情况下,保持件38的按压部42从后方向将多个透镜20、22向中间突起部侧按压。另外,在镜筒12的外周壁12o的顶端侧,设置将多个透镜14、16、18、20、22相对于镜筒12固定的环状的第2保持件。第2保持件具有从前方向将多个透镜14、16、18向中间突起部侧按压的第2按压部。第2保持件的结构与镜头单元58的保持件64同样。Although illustration is omitted, in the lens unit 10 , the protruding portion 34 may be omitted, and an annular intermediate protruding portion protruding radially inward may be formed in the middle portion of the inner peripheral wall 12 i of the lens barrel 12 . In this case, the pressing portion 42 of the holder 38 presses the plurality of lenses 20 and 22 toward the intermediate protrusion portion from the rear direction. In addition, an annular second holder for fixing the plurality of lenses 14 , 16 , 18 , 20 , and 22 to the lens barrel 12 is provided on the front end side of the outer peripheral wall 12 o of the lens barrel 12 . The second holder has a second pressing portion that presses the plurality of lenses 14, 16, and 18 toward the intermediate protruding portion from the front direction. The second holder has the same structure as the holder 64 of the lens unit 58 .

〔总结〕〔Summarize〕

本发明的方式1所涉及的镜头单元具备:镜筒;多个透镜,沿着光轴方向设置在该镜筒内;以及环状的保持件,设置为与所述镜筒螺纹接合,具有对所述多个透镜进行按压的环状的按压部,将所述多个透镜相对于所述镜筒固定。在所述保持件中的所述按压部的径向外侧,形成有向所述光轴方向的单侧(一侧)凹陷的环状的凹部,在沿着所述光轴方向的截面中,所述凹部形成为弯曲的形状。A lens unit according to the first aspect of the present invention includes: a lens barrel; a plurality of lenses arranged in the lens barrel along the optical axis direction; and an annular holder arranged to be threadedly engaged with the lens barrel and having an opposite direction. An annular pressing portion for pressing the plurality of lenses fixes the plurality of lenses with respect to the lens barrel. An annular recessed portion that is recessed toward one side (one side) in the optical axis direction is formed on the radially outer side of the pressing portion in the holder. In a cross section along the optical axis direction, The recess is formed in a curved shape.

根据上述的结构,如上所述,在沿着所述光轴方向的截面中,所述凹部形成为弯曲的形状。因此,即使不增大从所述按压部的内周面到所述保持件的外周面的距离而增大所述保持件的紧固力,也能够抑制包括所述凹部在内的所述按压部周边处的应力集中。由此,能够实现所述镜头单元的小型化,防止所述按压部周边处产生裂纹,提高所述镜头单元的耐久性。According to the above structure, as described above, the recessed portion is formed in a curved shape in a cross section along the optical axis direction. Therefore, even if the distance from the inner circumferential surface of the pressing part to the outer circumferential surface of the holder is not increased and the tightening force of the holder is increased, the pressing force including the recessed part can be suppressed. Stress concentration at the periphery. As a result, the lens unit can be miniaturized, cracks can be prevented around the pressing portion, and the durability of the lens unit can be improved.

本发明的方式2所涉及的镜头单元也可以是,在所述方式1中,在沿着所述光轴方向的截面中,所述按压部的内侧面以越从所述按压部的顶端面远离则越位于径向外侧的方式相对于所述光轴方向倾斜。The lens unit according to the second aspect of the present invention may be such that in the first aspect, in a cross section along the optical axis direction, the inner surface of the pressing portion is oriented so as to extend beyond the top surface of the pressing portion. The direction farther away from the optical axis is tilted relative to the direction of the optical axis.

根据上述的结构,所述按压部易于挠曲,能够在从低温时到高温时的宽温度范围中稳定地维持所述按压部的光轴方向的按压力。According to the above-mentioned structure, the pressing part is easy to flex, and the pressing force of the pressing part in the optical axis direction can be stably maintained in a wide temperature range from low temperature to high temperature.

本发明的方式3所涉及的镜头单元也可以是,在所述方式1或者2中,还具备:环状的间隔件,被设置在所述多个透镜之中的在所述光轴方向上相邻的任意透镜间;在所述镜筒的内周壁,形成有朝向径向内侧突出的环状的突起部,所述按压部将所述多个透镜向所述突起部侧按压。The lens unit according to the third aspect of the present invention in the first or second aspect may further include an annular spacer provided in the optical axis direction among the plurality of lenses. Between any adjacent lenses, an annular protruding portion protruding radially inward is formed on the inner peripheral wall of the lens barrel, and the pressing portion presses the plurality of lenses toward the protruding portion side.

根据上述的结构,通过紧固所述保持件,所述按压部经由所述间隔件将所述多个透镜向所述突起部侧按压。由此,能够将所述多个透镜相对于所述镜筒固定,并稳定地保持在所述镜筒内。According to the above structure, by tightening the holder, the pressing portion presses the plurality of lenses toward the protruding portion via the spacer. Thereby, the plurality of lenses can be fixed relative to the lens barrel and stably held in the lens barrel.

本发明的方式4所涉及的镜头单元也可以是,在所述方式1或者2中,在所述镜筒的内周壁的顶端侧,形成朝向径向内侧突出的环状的突起部,所述保持件设置为与所述镜筒的外周壁的基端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。In the lens unit according to the fourth aspect of the present invention, in the first or second aspect, an annular protruding portion protruding radially inward may be formed on the tip side of the inner peripheral wall of the lens barrel, and the The holder is provided to be threadedly engaged with the proximal end side of the outer peripheral wall of the lens barrel, and the pressing part presses the plurality of lenses toward the protruding part side.

根据上述的结构,通过紧固所述保持件,所述按压部将所述多个透镜向所述突起部侧按压。由此,能够将所述多个透镜相对于所述镜筒固定,并稳定地保持在所述镜筒内。According to the above-described structure, by tightening the holder, the pressing portion presses the plurality of lenses toward the protruding portion. Thereby, the plurality of lenses can be fixed relative to the lens barrel and stably held in the lens barrel.

本发明的方式5所涉及的镜头单元也可以是,在所述方式1或者2中,在所述镜筒的内周壁的顶端侧,形成朝向径向内侧突出的环状的突起部,所述保持件设置为与所述镜筒的内周壁的基端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。In the lens unit according to the fifth aspect of the present invention, in the first or second aspect, an annular protruding portion protruding radially inward may be formed on the tip side of the inner peripheral wall of the lens barrel, and the The holder is provided to be threadedly engaged with the proximal end side of the inner peripheral wall of the lens barrel, and the pressing part presses the plurality of lenses toward the protruding part side.

根据上述的结构,通过紧固所述保持件,所述按压部将所述多个透镜向所述突起部侧按压。由此,能够将所述多个透镜相对于所述镜筒固定,并稳定地保持在所述镜筒内。According to the above-described structure, by tightening the holder, the pressing portion presses the plurality of lenses toward the protruding portion. Thereby, the plurality of lenses can be fixed relative to the lens barrel and stably held in the lens barrel.

本发明的方式6所涉及的镜头单元也可以是,在所述方式1或者2中,在所述镜筒的内周壁的基端侧,形成有朝向径向内侧突出的环状的突起部,In the lens unit according to the sixth aspect of the present invention, in the first or second aspect, an annular protrusion protruding radially inward may be formed on the proximal end side of the inner peripheral wall of the lens barrel,

所述保持件设置为与所述镜筒的外周壁的顶端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。The holder is provided to be threadedly engaged with a distal end side of the outer peripheral wall of the lens barrel, and the pressing part presses the plurality of lenses toward the protruding part side.

根据上述的结构,通过紧固所述保持件,所述按压部将所述多个透镜向所述突起部侧按压。由此,能够将所述多个透镜相对于所述镜筒固定,并稳定地保持在所述镜筒内。According to the above-described structure, by tightening the holder, the pressing portion presses the plurality of lenses toward the protruding portion. Thereby, the plurality of lenses can be fixed relative to the lens barrel and stably held in the lens barrel.

本发明的方式7所涉及的镜头单元也可以是,在所述方式1至6的任一项中,在沿着所述光轴方向的截面中,所述凹部具有:位于径向内侧而且弯曲的第1弯曲部、位于径向外侧而且弯曲的第2弯曲部、以及位于所述第1弯曲部与所述第2弯曲部之间的直线部。In the lens unit according to aspect 7 of the present invention, in any one of aspects 1 to 6, in a cross section along the optical axis direction, the recessed portion may have a shape located radially inward and curved. A first curved portion, a second curved portion located radially outward and curved, and a straight portion located between the first curved portion and the second curved portion.

根据上述的结构,在沿着所述光轴方向的截面中,与所述凹部形成为圆弧状的情况相比,能够缩短所述凹部的径向的宽度。由此,与所述凹部的径向的宽度的缩短量相应地,能够促进所述镜头单元的小型化。According to the above-described configuration, in a cross section along the optical axis direction, the radial width of the recessed portion can be shortened compared with a case where the recessed portion is formed in an arc shape. Thereby, it is possible to promote the downsizing of the lens unit in accordance with the shortening of the radial width of the recessed portion.

本发明的方式8所涉及的镜头单元也可以是,在所述方式1至6的任一项中,在沿着所述光轴方向的截面中,所述凹部形成为U形。In the lens unit according to the eighth aspect of the present invention, in any one of the first to sixth aspects, the recess may be formed in a U-shape in a cross section along the optical axis direction.

根据上述的结构,在沿着所述光轴方向的截面中,与所述凹部形成为圆弧状的情况相比,能够缩短所述凹部的径向的宽度。由此,与所述凹部的径向的宽度的缩短量相应地,能够促进所述镜头单元的小型化。According to the above-described configuration, in a cross section along the optical axis direction, the radial width of the recessed portion can be shortened compared with a case where the recessed portion is formed in an arc shape. Thereby, it is possible to promote the downsizing of the lens unit in accordance with the shortening of the radial width of the recessed portion.

〔附记事项〕[Additional Notes]

本发明不限定于上述的各实施方式,能够在权利要求书所示的范围内进行各种变更,适宜地将不同的实施方式所分别公开的技术手段组合而得到的实施方式也包含在本发明的技术范围中。The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. Embodiments obtained by appropriately combining technical means disclosed in different embodiments are also included in the present invention. within the technical scope.

附图标记说明Explanation of reference signs

10镜头单元(实施方式1所涉及的镜头单元)10 Lens unit (lens unit according to Embodiment 1)

12 镜筒12 lens barrel

12i 内周壁12i inner peripheral wall

12o外周壁12o peripheral wall

14第1透镜14 1st lens

16第2透镜16 second lens

18第3透镜18 3rd lens

20第4透镜20 4th lens

22第5透镜22 5th lens

24第1间隔件24 1st spacer

26第2间隔件26 2nd spacer

28第3间隔件28 3rd spacer

30 滤波器保持部件30 filter holding parts

32 红外线截止滤波器32 Infrared cut filter

34 突起部34 protrusion

36 外螺纹部36 External thread part

38 保持件38 retainer

38o 外周面38o outer surface

40 内螺纹部40 Internal thread part

42 按压部42 Compression part

42t 顶端面42t top surface

42i 内周面42i inner surface

44 凹部44 recess

10A镜头单元(实施方式1的其他方式所涉及的镜头单元)10A lens unit (lens unit according to other aspects of Embodiment 1)

44a第1弯曲部44a 1st bend

44b第2弯曲部44b 2nd bending part

44c直线部44c straight part

46镜头单元(实施方式2所涉及的镜头单元)46 lens unit (lens unit according to Embodiment 2)

48 内螺纹部48 Internal thread part

50 保持件50 retainer

50o 外周面50o outer surface

52 外螺纹部52 External thread part

54 按压部54 Compression part

54t 顶端面54t top surface

54i 内周面54i inner surface

56 凹部56 recess

58镜头单元(实施方式3所涉及的镜头单元)58 lens unit (lens unit according to Embodiment 3)

60 突起部60 protrusion

62 外螺纹部62 External thread part

64 保持件64 retainer

64o 外周面64o outer surface

66 内螺纹部66 Internal thread part

68 按压部68 Compression part

68t 顶端面68t top surface

68i 内周面68i inner surface

70 凹部70 recess

Claims (8)

1.一种镜头单元,具备:1. A lens unit having: 镜筒;Lens barrel; 多个透镜,沿着光轴方向设置在该镜筒内;以及A plurality of lenses are arranged in the lens barrel along the optical axis direction; and 环状的保持件,被设置为与所述镜筒螺纹接合,具有对所述多个透镜进行按压的环状的按压部,将所述多个透镜相对于所述镜筒固定,An annular holder is provided to be threadedly engaged with the lens barrel, has an annular pressing portion for pressing the plurality of lenses, and fixes the plurality of lenses relative to the lens barrel, 在所述保持件中的所述按压部的径向外侧,形成有向所述光轴方向的单侧凹陷的环状的凹部,在沿着所述光轴方向的截面中,所述凹部形成为弯曲的形状。An annular recessed portion that is recessed toward one side in the optical axis direction is formed on the radially outer side of the pressing portion in the holder. In a cross section along the optical axis direction, the recessed portion forms For curved shape. 2.如权利要求1所述的镜头单元,2. The lens unit according to claim 1, 在沿着所述光轴方向的截面中,所述按压部的内侧面以越从所述按压部的顶端面远离则越位于径向外侧的方式相对于所述光轴方向倾斜。In a cross section along the optical axis direction, the inner surface of the pressing portion is inclined with respect to the optical axis direction so as to be located radially outward as the distance from the tip surface of the pressing portion increases. 3.如权利要求1所述的镜头单元,3. The lens unit according to claim 1, 所述镜头单元还具备:环状的间隔件,被设置在所述多个透镜之中的在所述光轴方向上相邻的任意透镜间,The lens unit further includes: an annular spacer provided between any lenses adjacent in the optical axis direction among the plurality of lenses, 在所述镜筒的内周壁,形成有朝向径向内侧突出的环状的突起部,An annular protrusion protruding radially inward is formed on the inner peripheral wall of the lens barrel, 所述按压部将所述多个透镜向所述突起部侧按压。The pressing part presses the plurality of lenses toward the protruding part side. 4.如权利要求1所述的镜头单元,4. The lens unit according to claim 1, 在所述镜筒的内周壁的顶端侧,形成朝向径向内侧突出的环状的突起部,An annular protrusion protruding radially inward is formed on the top end side of the inner peripheral wall of the lens barrel, 所述保持件设置为与所述镜筒的外周壁的基端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。The holder is provided to be threadedly engaged with the proximal end side of the outer peripheral wall of the lens barrel, and the pressing part presses the plurality of lenses toward the protruding part side. 5.如权利要求1所述的镜头单元,5. The lens unit of claim 1, 在所述镜筒的内周壁的顶端侧,形成朝向径向内侧突出的环状的突起部,An annular protrusion protruding radially inward is formed on the top end side of the inner peripheral wall of the lens barrel, 所述保持件设置为与所述镜筒的内周壁的基端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。The holder is provided to be threadedly engaged with the proximal end side of the inner peripheral wall of the lens barrel, and the pressing portion presses the plurality of lenses toward the protruding portion. 6.如权利要求1所述的镜头单元,6. The lens unit of claim 1, 在所述镜筒的内周壁的基端侧,形成有朝向径向内侧突出的环状的突起部,An annular protrusion protruding radially inward is formed on the base end side of the inner peripheral wall of the lens barrel, 所述保持件设置为与所述镜筒的外周壁的顶端侧螺纹接合,所述按压部将所述多个透镜向所述突起部侧按压。The holder is provided to be threadedly engaged with a distal end side of the outer peripheral wall of the lens barrel, and the pressing part presses the plurality of lenses toward the protruding part side. 7.如权利要求1所述的镜头单元,7. The lens unit of claim 1, 在沿着所述光轴方向的截面中,所述凹部具有:位于径向内侧而且弯曲的第1弯曲部、位于径向外侧而且弯曲的第2弯曲部、以及位于所述第1弯曲部与所述第2弯曲部之间的直线部。In a cross section along the optical axis direction, the recessed portion has a first curved portion located radially inward and curved, a second curved portion located radially outer and curved, and a curved portion located between the first curved portion and the first curved portion. The straight portion between the second curved portions. 8.如权利要求1所述的镜头单元,8. The lens unit of claim 1, 在沿着所述光轴方向的截面中,所述凹部形成为U形。The recess is formed in a U shape in a cross section along the optical axis direction.
CN202310566813.6A 2022-06-22 2023-05-19 Lens unit Pending CN117270137A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022100538A JP2024001703A (en) 2022-06-22 2022-06-22 lens unit
JP2022-100538 2022-06-22

Publications (1)

Publication Number Publication Date
CN117270137A true CN117270137A (en) 2023-12-22

Family

ID=89201530

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310566813.6A Pending CN117270137A (en) 2022-06-22 2023-05-19 Lens unit

Country Status (2)

Country Link
JP (1) JP2024001703A (en)
CN (1) CN117270137A (en)

Also Published As

Publication number Publication date
JP2024001703A (en) 2024-01-10

Similar Documents

Publication Publication Date Title
CN105467547B (en) Lens unit
US10365458B2 (en) Optical imaging system
TWI556027B (en) Lens module
US10520696B2 (en) In-vehicle camera lens unit
CN111448500B (en) Lens unit and camera module
JP2009048024A (en) Lens unit, imaging module, and optical device
US20190101718A1 (en) Lens unit
CN104704412A (en) Optical unit, imaging apparatus, and movable body
US20210181602A1 (en) Camera module
WO2012008284A1 (en) Optical lens module and assembly method for same
JP2010078920A (en) Lens holder
CN117270137A (en) Lens unit
US8351140B2 (en) Lens barrel and lens module
CN209525506U (en) A kind of lens module
KR102041688B1 (en) Lens
JP4882776B2 (en) Adapter ring and camera
CN102043220A (en) Lens group and lens module with lens group
JP2005017312A (en) Imaging lens and imaging device using the same
CN217879776U (en) Lens unit
CN218037506U (en) Lens module
JP7586704B2 (en) Lens unit
TWI881770B (en) Lens module
JP7625421B2 (en) Lens unit and imaging device
US20240402470A1 (en) Cemented lens, imaging lens, and imaging device
JP7607412B2 (en) Lens unit, manufacturing method thereof, and camera module

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination