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    • 3. 发明授权
    • Device for measuring light incident on an image forming optical system
    • 用于测量入射在图像形成光学系统上的光的装置
    • US4178084A
    • 1979-12-11
    • US869447
    • 1978-01-16
    • Kazuya MatsumotoSusumu MatsumuraAiichiro KoyamaYouichi OkunoTokuichi TsunlkawaTadashi Ito
    • Kazuya MatsumotoSusumu MatsumuraAiichiro KoyamaYouichi OkunoTokuichi TsunlkawaTadashi Ito
    • G02B5/32G03B7/099G03B7/00G03B19/12
    • G02B5/32G03B7/09976
    • The present invention relates to a device for measuring light incident on an image-forming optical system, making use of a plural number of diffraction elements. The plural number of the diffraction elements are respectively provided in the optical path of the image-forming optical system. Further the plural number of the diffraction elements respectively have a certain predetermined area. The plural number of the diffraction elements, seen along the direction of the optical axis of the image-forming optical system, are substantially only partially overlapped with respect to each other. The light beam incident on a diffraction element is divided into a non-diffracted light beam and a diffracted light beam. Thus, the diffracted light beam is directed toward the light detecting means so as to be measured while the non-diffracted light beam advances along the above mentioned optical axis. Consequently, at the part at which the diffraction elements overlap each other, the non-diffracted light beam emerging from the preceeding diffraction element again enters the following diffraction element. This light beam is again divided into a non-diffracted light beam and a diffracted light beam by means of the following diffraction element. The diffracted light beam is measured by a light detecting means in the same way as in the above mentioned case, while the non-diffracted light beam advances along the above mentioned optical axis. Thus, the light beam which passes through the overlapping parts is measured a plural number of times.
    • 本发明涉及一种利用多个衍射元件测量入射在图像形成光学系统上的光的装置。 多个衍射元件分别设置在成像光学系统的光路中。 此外,多个衍射元件分别具有一定的预定面积。 沿着图像形成光学系统的光轴的方向看到的多个衍射元件相对于彼此基本上仅部分重叠。 入射到衍射元件上的光束被分成非衍射光束和衍射光束。 因此,衍射光束被引导到光检测装置,以便当非衍射光束沿着上述光轴前进时被测量。 因此,在衍射元件彼此重叠的部分,从前面的衍射元件出射的非衍射光束再次进入随后的衍射元件。 该光束通过以下衍射元件再分为非衍射光束和衍射光束。 衍射光束以与上述情况相同的方式由光检测装置测量,而非衍射光束沿着上述光轴前进。 因此,通过重叠部分的光束被测量多次。
    • 7. 发明授权
    • Light measuring device for a single lens reflex camera with a pentagonal
prism
    • 用于具有五棱镜的单镜头反光相机的光测量装置
    • US4005458A
    • 1977-01-25
    • US518160
    • 1974-10-25
    • Youichi Okuno
    • Youichi Okuno
    • G03B7/099G03B19/12G03B13/06
    • G03B19/12G03B7/09976
    • A light measuring device for a single lens reflex camera wherein a reflection member having a slant surface is provided at the rear of an exit plane of a pentagonal roof prism and locating to be outside of the viewfinder light path, and the effect by undesired incident light is eliminated by a mirror formed by the slant surface placed in front of the light receiving element or photosensitive device, which light once enters into the pentagonal prism from the ocular lens and is reflected at the bottom surface thus again comes out of the surface of the pentagonal prism facing the ocular lens to proceed toward the photosensitive device.
    • 一种用于单透镜反射照相机的光测量装置,其中具有倾斜表面的反射构件设置在五边形屋顶棱镜的出射平面的后部并且定位成在取景器光路外部,并且由不期望的入射光 通过由放置在光接收元件或感光装置前面的倾斜表面形成的反射镜来消除,该光从眼镜透镜入射到五棱镜中,并在底表面反射,从而再次从 面向眼镜片的五棱镜朝向感光装置前进。
    • 8. 发明授权
    • Photographic data printing device
    • 摄影数据打印设备
    • US4198146A
    • 1980-04-15
    • US898333
    • 1978-04-20
    • Tetsuya TaguchiShuichi TamuraYouichi Okuno
    • Tetsuya TaguchiShuichi TamuraYouichi Okuno
    • G03B17/24G03B13/02
    • G03B17/245G03B2217/243
    • A data printing device for use in a photographic camera includes an electronic clock for providing time and date data to be printed in digital form on the associated film in the camera. In one embodiment, the data are grouped into two parts which are printed in time-displaced relation to each other on a common picture frame, while the data are prevented from changing during the printing operation, as time passes on. The display of data is effected only when printing is performed, or when required or desired values of time and/or date are set in the electronic clock, thereby the consumption of electrical energy of a common battery of the exposure control apparatus in the camera is minimized.
    • 用于照相机的数据打印装置包括一个电子时钟,用于提供数字形式的时间和日期数据,以便在相机中的相关胶片上。 在一个实施例中,数据被分组成两个部分,这些部分在公共图像帧上以时间位移关系打印,同时在打印操作期间防止数据在时间过去时改变。 数据的显示仅在执行打印时进行,或者当需要时或期望的时间和/或日期值被设置在电子时钟中时,照相机中的曝光控制装置的公用电池的电能的消耗是 最小化。