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    • 49. 发明授权
    • Bi-level focusing plate of phase grating type
    • 相位光栅类型的双层聚焦板
    • US4697878A
    • 1987-10-06
    • US706962
    • 1985-02-28
    • Kazuo KimuraTetsuyuki TanimotoHiroshi Kobayashi
    • Kazuo KimuraTetsuyuki TanimotoHiroshi Kobayashi
    • G03B13/24G02B5/18G02B7/28G02B27/40
    • G02B7/28G02B27/40G02B5/1871
    • There is disclosed a bi-level focusing plate of phase grating type in which micro unit patterns, each of which is comprised of one or more projections and one or more recessions, are arranged regularly and repeatedly at a pitch of 10 to 30 .mu.m. The phase difference between each of projections and each of recessions is set at .pi. radian against a light having a wavelength of 400 to 700 nm and the ratio in area of total area of projections or recessions in one unit pattern to the area of said one unit pattern is set so as to fall into a range of 0.3 to 0.5. The focusing plate is characterized in that the boundaries in each unit pattern each defined between the projection and the recession adjacent to each other therein are comprised of straight-lined portions and curved portions.
    • 公开了一种相位光栅类型的双电平聚焦板,其中每个由一个或多个突起和一个或多个凹部组成的微单元图案以10至30μm的间距规则地和重复地布置。 每个突起和每个凹陷之间的相位差被设置为相对于波长为400至700nm的光的pi弧度,并且将一个单位图案中的突起或凹陷的总面积的面积与所述一个单位的面积 图案设定为0.3〜0.5的范围。 聚焦板的特征在于,每个单元图案中的每个限定在彼此相邻的突起和凹陷之间的边界由直线部分和弯曲部分组成。
    • 50. 发明授权
    • Light measuring device for a single lens reflex camera
    • 单反相机用光测量装置
    • US4563068A
    • 1986-01-07
    • US580872
    • 1984-02-16
    • Kazuo KimuraYasuo YamazakiHiromu Mukai
    • Kazuo KimuraYasuo YamazakiHiromu Mukai
    • G02B7/28G02B7/34G03B7/099G03B7/0997G03B13/36G03B3/00
    • G03B7/09979G03B7/09972
    • A light measuring device for a single lens reflex camera includes a principal or main mirror capable of dividing light passing through an objective lens towards a finder system and towards a film plane. A submirror is provided behind the main mirror and directs the light passed therethrough towards the film plane for ultimately determining a focusing condition and a measurement of light intensity. A pair of focus detecting photosensor arrays, as well as a spotlight measuring photocell, is arranged relative to the submirror to receive the object light. The auxiliary mirror can be formed with a center portion for reflecting the light through the photocell arrays and a second light-reflecting plane having light diffusive characteristics for directing light for the detection of light measurement.
    • 用于单镜头反射照相机的光测量装置包括主镜或主镜,其能够将通过物镜的光朝向取景器系统分离并朝向胶片平面。 在主镜后面设置一个子镜,并将透过的光引向胶片平面,以最终确定聚焦条件和光强的测量。 相对于子镜布置一对焦点检测光电传感器阵列以及聚光灯测量光电管,以接收对象光。 辅助镜可以形成有用于通过光电池阵列反射光的中心部分和具有用于引导光用于光测量的检测的光漫射特性的第二光反射面。