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1. 发明专利

JP2004133091A Light shielding structure of lens barrel 审中-公开
标题翻译：镜头灯的光屏蔽结构
公开(公告)号：JP2004133091A
公开(公告)日：2004-04-30
申请号：JP2002295918
申请日：2002-10-09
申请人： Pentax Corp , ペンタックス株式会社
发明人： TANAKA HITOSHI
IPC分类号： G02B7/02 , G02B7/10 , G02B7/20 , G02B7/22
CPC分类号： G02B7/10 , G02B7/20 , G02B7/22
摘要： PROBLEM TO BE SOLVED: To obtain a light shielding structure of a lens barrel having an internal barrel where a piercing-through notch in a radial direction to allow harmful light to enter exists and an external barrel which is positioned on the outer periphery of the internal barrel and rotates relatively to the internal barrel, and improved so that an eccentric error need not be considered and the increase of rotational resistance is restrained to be little.
SOLUTION: In the light shielding structure of the lens barrel, the internal wall is internally provided with an inward flange wall to be positioned more forward than the piercing-through notch in an optical axis direction. A cylindrical annular groove centering around an optical axis is formed on the inner surface of the inward flange wall, while a flange-like annular groove in the radial direction is formed on the inner peripheral surface of the external barrel. The edge of the cylindrical part and the edge of the flange part of a light shielding ring which has the cylindrical part centering around the optical axis and the flange part extended in the radial direction from the rear end of the cylindrical part and whose cross section is nearly L-shaped are respectively inserted to freely relatively move each other in the cylindrical annular groove and the flange-like annular groove.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了获得具有内筒的镜筒的遮光结构，其中存在径向穿透凹口以允许有害光进入的位置，以及位于外周的外筒并相对于内筒旋转，并且改进，使得不需要考虑偏心误差，并且抑制旋转阻力的增加。解决方案：在镜筒的遮光结构中，内壁内部设置有向内的凸缘壁，其沿光轴方向位于比穿孔口更靠前的位置。在内侧凸缘壁的内表面上形成围绕光轴的圆筒状的环状槽，在外筒的内周面上形成径向的凸缘状的环状槽。圆筒部分的边缘和遮光环的凸缘部分的边缘，其具有围绕光轴定心的圆柱形部分和凸缘部分，其从圆柱形部分的后端沿径向方向延伸，并且横截面是大致L字形分别插入到圆柱形环形槽和凸缘状环形槽中彼此自由地相对移动。版权所有（C）2004，JPO

2. 实用新型

JPH03112717U 失效
公开(公告)号：JPH03112717U
公开(公告)日：1991-11-18
申请号：JP2135990
申请日：1990-03-02
IPC分类号： G02B7/22 , B23Q11/08 , F16J3/04

3. 发明专利

JPS6226001B2 失效
公开(公告)号：JPS6226001B2
公开(公告)日：1987-06-05
申请号：JP9158986
申请日：1986-04-21
申请人： MARUEI KASEI JUGENGAISHA
发明人： TSUTSUI SOICHI
IPC分类号： G02B7/20 , G02B7/22 , G03B17/04

4. 实用新型

JPS61160414U 失效
公开(公告)号：JPS61160414U
公开(公告)日：1986-10-04
申请号：JP4468285
申请日：1985-03-27
IPC分类号： G02B7/20 , G02B7/02 , G02B7/22 , G02B23/16

5. 发明专利

JPS61113043A Light shielding device of collapsible barrel type camera 失效
标题翻译：可折叠棒型摄像机的光屏蔽装置
公开(公告)号：JPS61113043A
公开(公告)日：1986-05-30
申请号：JP23603884
申请日：1984-11-08
申请人： Konishiroku Photo Ind Co Ltd
发明人： YAMADA MINORU , ITO EIJI , MIYAMA KENJI , SAWAMURA MASATAKA
IPC分类号： G02B7/20 , G02B7/22 , G03B11/00 , G03B17/04
摘要： PURPOSE: To prevent effectively light from leaking the fitting part between a lens unit and a lens mount by forming an annular groove in a wall which engages a lens barrel, and providing a light shield member which engages the groove bottom elastically in the groove.
CONSTITUTION: The lens unit 3 is run through a front plate 2 while there is a slight clearance C left between its outer peripheral surface and the inner periphery of the lens mount 2a incorporated in the front plate 2, and a wide and shallow groove 2b is formed annularly in the inner peripheral surface of the lens mount 2a to fit a light shield member 6. The light shield member 6 has plural bent parts 6b by bending one surface of a metallic thin plate 6 of an elastic material and is fitted in the groove 2b by deforming annularly and elastically with a beltlike member having light shield fur 7 of proper length flocked on the opposite-side surface.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过在与镜筒接合的壁中形成环形槽，并有效地防止在透镜单元和透镜座之间的配合部分的光泄漏，并提供一个遮光部件，该遮光部件与凹槽底部弹性啮合在凹槽中。构成：透镜单元3在其外周面与内置于前面板2的透镜座2a的内周之间留有微小的间隙C而穿过前面板2，宽而浅的槽2b为形成在透镜安装部2a的内周面的环状地嵌合遮光部件6.遮光部件6通过弯曲弹性材料的金属薄板6的一个表面而具有多个弯曲部6b， 2b通过使具有适当长度的遮光毛皮7的带状构件环形地和弹性地变形，嵌在相对侧表面上。

6. 发明专利

JPS60159716A BELLOWS 失效
公开(公告)号：JPS60159716A
公开(公告)日：1985-08-21
申请号：JP1432984
申请日：1984-01-31
申请人： SAKAI TOKUSHIYU CAMERA SEISAKU
发明人： SAKAI MITSUJI , NISHI MASAHIRO
IPC分类号： G02B7/20 , G02B7/22 , G03B17/04
摘要： PURPOSE:To make mass production of the titled bellows by forming reinforcing members on the surface of a sheet by printing to improve the forming precision and the quality of reinforcing members. CONSTITUTION:A foaming ink 5 is applied onto the upper face of a black cloth of a sheet 1, which is constituted by laminating an outermost layer, a light shielding film, and the black cloth, by printing. The foaming ink 5 is applied into a shape where one shorter side of a rectangle is cut obliquely, and the adjacent oblique sides 5a face each other, and zigzag fold parts 6 are formed between these oblique sides 5a as the whole, and parallel fold parts 7 are formed between longer sides 5b. Then, 4 zigzag fold parts 6 are formed on one sheet 1 and are used as folds of a complete good. The sheet 1 is allowed pass between a heat roll and a supporting roll while the foaming ink 5 is turned up, and the foaming ink 5 foams to rise from the surface of the sheet 1, and thus, the foaming ink displays a function as reinforcing members, and mass production is made possible.

7. 发明专利

JPS5559449A BELLOWS DEVICE 失效
公开(公告)号：JPS5559449A
公开(公告)日：1980-05-02
申请号：JP13228678
申请日：1978-10-26
申请人： MINOLTA CAMERA KK
发明人： KURAMOTO YOSHIO , UEDA HIROSHI , ITOU MASATOSHI
IPC分类号： G02B7/22 , G03B17/04
摘要： PURPOSE:To improve fitting by using two sets of link mechanisms which move parallel to horizontal plane and perpendicular plane. CONSTITUTION:The front rear sheaths of the link mechanism which comprises pinning the four links 18a-18d, 22a-22d of the same length and moves parallel to perpendicular plane and the link mechanism which comprises pinning the four links 20a-20d of the same length and moves parallel to horizontal plane are assembled to U-form frameworks 28, 30 provided with sliding oblong holes 34a, 38b, 42b and 32a, 36b, etc. The U-form frameworks 28, 30 are assembled to the stationary box body 8 provided with the mount for installing to the lens-installing mount of the camera body and the moving box body 12 provided with an interchangeable lens- seating mount 10. As a result, the link mechanisms are connected and moved flatly and there are to largely protruding things, thus the mechanisms are folded compact with food fitting. In addition, they will not deviate from the optical axis with the camera body and interchangeable lens being held mounted and are foldable to small.

8. 发明专利

JP2000356731A BELLOWS-LIKE MEMBER AND LENS BARREL PROVIDED THEREWITH 失效
公开(公告)号：JP2000356731A
公开(公告)日：2000-12-26
申请号：JP16808699
申请日：1999-06-15
申请人： CANON KK
发明人： HASE HIROYUKI
IPC分类号： G02B5/00 , F16L11/04 , G02B7/02 , G02B7/22
摘要： PROBLEM TO BE SOLVED: To make a bellows-like light shielding and dustproofing rubber arranged in order to prevent a light beam and a foreign matter such as, sand and dust from entering the inside of a lens barrel hardly have sand, dust and the like stuck and properly elongated and contracted. SOLUTION: A photographing lens unit 10 consists of a lens holding frame 12 which moves forward and backward in an optical axis direction and holds a photographing lens 11. A lens barrel frame 28 is constituted so that the unit 10 is supported and the frame 12 is covered by the lens 11 and provided with an aperture part 28b for the lens 11. Then, the bellows-like light shielding and dustproofing rubber 30 is elongated and contracted by following up the forward and backward movement of the frame 12 so as to surround an interval between the frames 12 and 28. Besides, the back end of the rubber 30 is held at the flange part 12d of the frame 12 and the front end thereof is held at the flange part 28a of the frame 28 by a pressing plate 31 by piercing through the aperture part 28b of the frame 28. Then, Teflon(R) based coating processing is executed at the surface of the rubber 30 in order to prevent rubber from being stuck to it.

9. 实用新型

JP3045636U 失效
公开(公告)号：JP3045636U
公开(公告)日：1998-02-13
申请号：JP1394396
申请日：1996-12-20
IPC分类号： D03D15/08 , D03D15/00 , D06B1/00 , D06C5/00 , G02B7/22

10. 发明专利

JPH04151633A INSTANT CAMERA 失效
公开(公告)号：JPH04151633A
公开(公告)日：1992-05-25
申请号：JP27712090
申请日：1990-10-15
申请人： FUJI PHOTO FILM CO LTD
发明人： KANAI MASAHARU , OBIKAWA FUMITO , YAJIMA ATSUO
IPC分类号： G02B7/22 , G03B17/04 , G03B17/52
摘要： PURPOSE:To prevent flare from being generated because light is reflected on the bottom surface of a bellows even in the case that the strong light enters from the upper part of a photographing lens by inclining a rib formed on at least one part of the inside surface of the bellows in a left and right direction with respect to a photographing optical path. CONSTITUTION:In the case that the photographing is executed when a substance with high brightness exists within a photographic image plane or around it, the light is reflected on at least one part of the inside surface of the bellows 29. In such a case, since the rib 40 formed on at least one part of the inside surface of the bellows 29 is inclined in the left and right direction with respect to the photographing optical path, the reflected light can be scattered toward the outside of the range of the photographic image plane. Thus, even in the case that the strong light enters from the upper part of the photographing lens at a photographing time, a clear photographed image is obtained without lowering the contrast thereof.

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