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    • 7. 发明授权
    • Lens-fitted photographic flim unit and exposure aperture size changing
device therefor
    • 镜头式照相胶卷单元和曝光孔径尺寸更换装置
    • US5506643A
    • 1996-04-09
    • US169203
    • 1993-12-20
    • Hisashi TasakaNobuyuki KameyamaKazuo OkoyamaMitsuyoshi Mochida
    • Hisashi TasakaNobuyuki KameyamaKazuo OkoyamaMitsuyoshi Mochida
    • G03B1/50G03B13/12G03B19/04G03B13/10G03B37/00
    • G03B1/50G03B13/12G03B19/04G03B2219/045
    • A lens-fitted photographic film unit whose film surface disposed behind an exposure aperture is forwardly concave along the longitudinal direction of the film strip so as to correct distortion by the taking lens. The unit has an exposure aperture size changing device constituted of a manually actuated photography mode changing member for selecting either a standard photography mode for forming a standard size picture frame, or a special photography mode in which a special size picture frame smaller than the standard size picture frame may be formed. A pair of aperture masking plates is movable into margins of the exposure aperture, for masking out parts of the exposure aperture. The masking plates have such shapes that, if images of the aperture masking plates are projected onto a plane perpendicular to an optical axis of the taking lens in the masking position, the images have concave top and bottom margins, so that the special size picture frame has a rectangular shape when the images of the masking plates are projected on that concave film surface instead of on that perpendicular plane.
    • 配置在曝光孔后面的胶片表面的透镜配合的摄影胶片单元沿着胶片条的纵向方向向前凹入,以便通过拍摄镜头矫正失真。 该单元具有曝光孔径尺寸改变装置,其由用于选择用于形成标准尺寸图像帧的标准摄影模式的手动启动拍摄模式改变构件或特定拍摄模式构成,其中特殊尺寸图像帧小于标准尺寸 可以形成相框。 一对孔径掩模板可移动到曝光孔的边缘,用于遮蔽曝光孔的部分。 掩模板具有这样的形状,即如果孔掩模板的图像在掩蔽位置上投影到垂直于拍摄透镜的光轴的平面上,则图像具有凹的顶部和底部边缘,使得特殊尺寸的图像帧 当掩模板的图像投影在该凹面膜表面上而不是在该垂直平面上时具有矩形形状。
    • 8. 发明授权
    • Lens-fitted photographic film unit
    • 镜头式摄影胶片单元
    • US6154609A
    • 2000-11-28
    • US332058
    • 1994-11-01
    • Katsuji MuramatsuNobuyuki KameyamaMitsuyoshi Mochida
    • Katsuji MuramatsuNobuyuki KameyamaMitsuyoshi Mochida
    • G03B1/50G03B19/04G03B37/00G03B17/02
    • G03B37/00G03B1/50G03B19/04G03B2219/045
    • A lens-fitted photographic film unit has a picture frame size changing mechanism for changing the size of picture frames between a full size and a panoramic size. The picture frame size changing mechanism includes upper and lower exposure aperture masking plates which are pivotally mounted in a light-shielding box in front of an exposure aperture. The masking plates are interconnected to each other through one-side contact and urged by a tension spring toward a full size position. The upper masking plate is connected to an operation knob through a crank lever and a switching lever. When the knob is operated to select the panoramic size, the switching lever is moved over a necessary amount for moving the masking plates in a panoramic size position to mask the exposure aperture. After the masking plates are stopped in the panoramic size position by stoppers, the over-stroke of the switching lever is absorbed by resilient bending of the crank lever.
    • 带镜头的摄影胶片单元具有用于改变全尺寸和全景尺寸之间的相框尺寸的相框尺寸改变机构。 相框尺寸改变机构包括可旋转地安装在曝光孔前面的遮光箱中的上和下曝光孔掩模板。 掩模板通过单面接触彼此互连,并通过拉伸弹簧朝向全尺寸位置推动。 上掩模板通过曲柄杆和开关杆连接到操作旋钮上。 当操作旋钮以选择全景尺寸时,切换杆移动超过所需量以移动全景尺寸位置中的掩模板以掩盖曝光孔径。 在屏蔽板通过塞子停在全景尺寸位置之后,切换杆的过冲程被曲柄杆的弹性弯曲所吸收。