发明授权
- 专利标题: Lens shutter camera including zoom lens and barrier mechanisms
- 专利标题(中): 镜头快门摄像机,包括变焦镜头和遮挡机构
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申请号: US486914申请日: 1990-02-14
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公开(公告)号: US5214462A公开(公告)日: 1993-05-25
- 发明人: Keisuke Haraguchi , Shinsuke Kohmoto , Shigeru Kondoh , Hideki Ohkubo , Susao Nakamura
- 申请人: Keisuke Haraguchi , Shinsuke Kohmoto , Shigeru Kondoh , Hideki Ohkubo , Susao Nakamura
- 申请人地址: JPX Tokyo
- 专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人: Asahi Kogaku Kogyo Kabushiki Kaisha
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX61-108278 19860512; JPX61-108279 19860512; JPX61-80861 19860528; JPX61-83932 19860602; JPX61-127496 19860602; JPX61-145470 19860621; JPX61-150995 19860626; JPX61-125045 19860815; JPX61-196911 19860822; JPX61-132658 19860829; JPX61-132659 19860829; JPX61-132660 19860829; JPX61-132661 19860829; JPX61-80862 19870528
- 主分类号: G02B7/10
- IPC分类号: G02B7/10 ; G02B23/14 ; G03B13/12 ; G03B17/04 ; G03B17/02
摘要:
A lens shutter type of camera is disclosed in which a zoom lens is positioned in a lens block (1) which has a sector gear (15) rotatably associated with the lens block and with a rotatable cam ring (14). The cam ring and sector gear are rotatable in a substantially constant axial position. A movable finder optical assembly (8) and a movable strobe assembly (9) are movable in association with movement of the zoom lens. The zoom lens is movable between an extreme telephoto position and an extreme wide angle position, as well a into a fully collapsed lens position beyond the extreme wide angle position and a macro or close-up photographing position beyond the extreme telephoto position. When the camera is in its macro mode, a prism (P1) is inserted into the finder optical assembly to correct for parallax; the strobe assembly is moved to change its illumination angle; and an optical wedge (4e) is pivoted into the path between a light receiver (4) and a light emitter (3e). A single cam plate (53) is provided to move the finder assembly and the strobe assembly. The photographic aperture (22b) can be selectively closed by barrier plates (31a) when the zoom lens is moved into its fully collapsed position. A light intercepting assembly (210) is provided for preventing light from entering the photographic optical assembly via cam grooves (20 and 21). This intercepting assembly includes a flexible code plate (90) which surrounds a peripheral portion of the cam ring (14) and which provides positional information relating to the position of the zoom lens.
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