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    • 2. 发明授权
    • Collapsible mounting type camera with zoom lens
    • 具有变焦镜头的折叠式安装型照相机
    • US4958178A
    • 1990-09-18
    • US272524
    • 1988-11-16
    • Toshio YoshidaMasayoshi HiraiTetuo NishizawaMasashi Takamura
    • Toshio YoshidaMasayoshi HiraiTetuo NishizawaMasashi Takamura
    • G03B17/12G02B7/04G02B7/10G03B5/00G03B17/04
    • G02B7/10
    • A camera with a zoom lens system having at least front and rear lens groups each comprising at least one lens, comprises a movable lens barrel holding the front lens group and being axially movable rearwardly and forwardly relative to a camera body and a moving mechanism for causing the axial movement of the movable lens barrel. The moving mechanism comprises a first cam member provided in the movable lens barrel and a rotatable lever coacting with the first cam member for causing the axial movement of the movable lens barrel, the first cam member having first and second straight cam sections for causing the axial movement of the movable lens barrel between front and rear axial positions and beyond the rear positions, respectively, and further comprises a second cam member provided in the camera body and a bell crank lever rotatably mounted on the movable lens barrel and coacting with the second cam member and the second lens group for shifting the rear lens group relative to the front lens group when the movable lens group is moved between the front and rear axial positions so as to change the zoom lens system between the longest and the shortest focal length and for moving the front and rear lens groups conjointly as a unit when the movable lens barrel is moved beyond the rear axial position, thereby collapsing the movable lens barrel at least almost fully within the camera body.
    • 具有至少具有至少一个透镜的前透镜组和后透镜组的变焦透镜系统的相机包括保持前透镜组的可移动透镜筒,并且可相对于照相机主体向后和向后轴向移动,用于引起 可移动镜筒的轴向移动。 移动机构包括设置在可移动镜筒中的第一凸轮构件和与第一凸轮构件共同作用的用于引起可动镜筒的轴向移动的可旋转杆,第一凸轮构件具有第一和第二直凸轮部分,用于使轴向 分别在前后轴向位置和后方位置之间移动可移动镜筒,并且还包括设置在照相机主体中的第二凸轮构件和可旋转地安装在可移动镜筒上并与第二凸轮共同作用的曲柄杆 以及当所述可动透镜组在所述前后轴向位置之间移动时,使所述后透镜组相对于所述前透镜组移动,从而将所述变焦透镜系统改变在最长焦距和最短焦距之间,并且为 当可移动镜筒移动超过后轴向位置时,将前后透镜组一起作为一个单元移动,从而收缩 至少几乎完全在相机机体内移动可移动镜筒。
    • 9. 发明授权
    • Camera having shutter charging mechanism
    • 相机具有快门充电机构
    • US5890024A
    • 1999-03-30
    • US22116
    • 1998-02-11
    • Yoji NakaMasashi TakamuraHiroshi SohmaKazuhiko Onda
    • Yoji NakaMasashi TakamuraHiroshi SohmaKazuhiko Onda
    • G03B17/00G03B1/24G03B7/10G03B17/36G03B17/42
    • G03B1/24G03B17/36G03B17/425G03B7/10
    • A camera having a sprocket with a pair of cogs formed on a periphery for engaging a filmstrip having a row of perforations separated at alternate short and long intervals. The periphery is divided by the cogs into a frictional engaging section which provides frictional engagement of the periphery with the filmstrip and a mechanical engaging section which provides mechanical engagement of the cogs with the perforations. A shutter charging mechanism is operated by rotation of the sprocket driven by the filmstrip through the mechanical engagement between the filmstrip and at least part of the mechanically engaging section of the sprocket. A switch over mechanism disconnects the sprocket and the shutter mechanism in response to rewinding the filmstrip and a locking mechanism prevents reverse rotation of the sprocket in a specific position.
    • 一种具有链轮的相机,其具有形成在周边上的一对齿,用于接合具有以交替的短和长间隔隔开的一排穿孔的胶片。 周边被齿轮分成摩擦接合部分,其提供周边与胶片的摩擦接合以及提供齿轮与孔的机械接合的机械啮合部分。 快门充电机构通过由胶片与胶片与链轮的机械接合部分的至少一部分之间的机械接合而旋转驱动的链轮来操作。 切换机构响应于复卷胶片而使链轮和快门机构断开,并且锁定机构防止链轮在特定位置的反向旋转。
    • 10. 发明授权
    • Zoom lens with hindering device
    • 变焦镜头带阻碍装置
    • US5699199A
    • 1997-12-16
    • US690141
    • 1996-07-31
    • Michio ChoMasashi TakamuraYoichi Iwasaki
    • Michio ChoMasashi TakamuraYoichi Iwasaki
    • G02B7/08G02B7/10G02B15/14
    • G02B7/102
    • A zoom lens is comprised of a fixed barrel, an intermediate barrel coupled to the fixed barrel through helicoid screws, a movable barrel coupled to the intermediate barrel through helicoid screws, a front lens group fixedly held in the movable barrel, and a rear lens group. The position of the front lens group in the optical axis direction is always determined by the axial movement of the intermediate barrel relative to the fixed barrel and the axial movement of the movable barrel relative to the intermediate barrel. The axial position of the rear lens group is determined by the axial movement of the intermediate barrel relative to the fixed barrel and a cam surface formed in an inner periphery of the intermediate barrel. As the axial position of the cam surface within the intermediate barrel changes with the rotational position of the intermediate barrel, the rear lens group moves in the axial direction relative to the intermediate barrel during zooming. But during focusing, a hindering device is activated to hinder the rear lens group from axial movement relative to the intermediate barrel, so that the rear lens group moves by the same amount in the axial direction as the intermediate barrel independently of the cam surface.
    • 变焦镜头包括固定镜筒,通过螺旋螺钉联接到固定镜筒的中间镜筒,通过螺旋螺钉联接到中间镜筒的可动镜筒,固定保持在可动镜筒中的前透镜组以及后透镜组 。 前透镜组在光轴方向的位置总是由中间筒相对于固定筒的轴向运动和可移动筒相对于中间筒的轴向运动确定。 后透镜组的轴向位置由中间筒相对于固定筒的轴向运动和形成在中间筒的内周中的凸轮表面确定。 当中间筒内的凸轮表面的轴向位置随着中间筒的旋转位置而变化时,后透镜组在变焦期间相对于中间筒在轴向方向上移动。 但是在聚焦期间,阻碍装置被激活以阻止后透镜组相对于中间筒的轴向移动,使得后透镜组在独立于凸轮表面的情况下沿与轴承方向相同的量移动相同的量。