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    • 1. 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。
    • 4. 发明授权
    • Photo-taking lens temperature compensation system
    • 摄影镜头温度补偿系统
    • US5679946A
    • 1997-10-21
    • US667488
    • 1996-06-24
    • Hiromu MukaiYasumasa SugiharaRieko Hasegawa
    • Hiromu MukaiYasumasa SugiharaRieko Hasegawa
    • G02B7/02G02B7/08G01J1/20
    • G02B7/028
    • A system that is mounted in a camera capable of focal point detection and that performs correction of the focal point detection data in accordance with the temperature, wherein the temperature inside the photo-taking lens barrel is measured and the focal point detection data is corrected based on the temperature data for the interior of the photo-taking lens barrel. Using this construction, because the temperature of a lens element comprising the photo-taking lens can be accurately measured even where the ambient temperature of the camera has suddenly changed, for example, appropriate correction suitable for the temperature conditions may be performed. Also disclosed is a construction in which the correction of the focal point detection data is performed based on not only the temperature data but also the focal length data for the photo-taking lens. Using this construction, appropriate correction suitable for the temperature conditions may be performed even when, for example, the focal length of the photo-taking lens has changed.
    • 一种安装在能够进行焦点检测的相机中的系统,并且根据温度执行焦点检测数据的校正,其中测量摄像镜筒内部的温度并且基于焦点检测数据被校正 关于摄影镜头镜筒内部的温度数据。 使用这种结构,即使在照相机的环境温度突然变化的情况下,即使在照相机的环境温度突然变化的情况下也可以精确地测量包括摄影镜头的透镜元件的温度,例如可以执行适合于温度条件的适当校正。 还公开了一种结构,其中,不仅基于温度数据而且基于摄影镜头的焦距数据执行焦点检测数据的校正。 使用该结构,即使例如摄影镜头的焦距发生变化,也可以进行适合于温度条件的适当的校正。
    • 10. 发明授权
    • Focus detection apparatus
    • 对焦检测装置
    • US4916473A
    • 1990-04-10
    • US249899
    • 1988-09-27
    • Hiromu MukaiTokuji IshidaHisashi Tokumaru
    • Hiromu MukaiTokuji IshidaHisashi Tokumaru
    • G02B7/34
    • G02B7/34
    • A focus detection apparatus for a camera comprising: a condensor lens being arranged close to or behind a predetermined focal plane of an objective lens of the camera. A pair of image separation members for separating the image of an object formed on the predetermined focal plane by use of light having been passed through said objective lens into two images which are arranged behind the condensor lens symmetrically with respect to the optical axis of the objective lens, wherein the correlation between the two images formed separately is measured in order to detect the focus condition of the objective lens; said image separating members including a mask members for projecting the exit pupil of the image separation members within an exit pupil of a cata-dioptric lens system as the objective lens.
    • 一种用于照相机的焦点检测装置,包括:在相机的物镜的预定焦平面附近或之后布置的聚光镜。 一对图像分离构件,用于通过使用已经通过所述物镜的光将形成在预定焦平面上的物体的图像分离成相对于物镜的光轴对称设置在聚光镜后面的两个图像 透镜,其中测量分开形成的两个图像之间的相关性,以便检测物镜的聚焦状态; 所述图像分离部件包括用于将图像分离部件的出射光瞳投影在作为物镜的光束透镜系统的出射光瞳内的掩模部件。