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    • 91. 发明授权
    • Apparatus for detecting the focus adjusted state of an objective lens
    • 用于检测物镜的焦点调整状态的装置
    • US4855777A
    • 1989-08-08
    • US162575
    • 1988-03-01
    • Yasuo SudaMasaki HigashiharaTerutake Kadohara
    • Yasuo SudaMasaki HigashiharaTerutake Kadohara
    • G02B7/34
    • G02B7/34
    • An focus detecting apparatus has a scanning plate disposed on or near the predetermined imaging plane of an objective lens and reciprocally movable to grating-scan the image of an object, a mask having an aperture adjacent to the scanning plate and movable to a desired position in a plane perpendicular to the optic axis of the objective lens to determine a range for detection, a plurality of light-receiving devices for receiving light fluxes passed through the scanning plate and the mask and outputting a signal regarding the focus adjusted state of the objective lens, and a field lens for relating the light fluxes entering the light-receiving devices to each other so as to pass through different areas of the exit pupil of the objective lens.
    • 焦点检测装置具有设置在物镜的预定成像平面上或附近的扫描板,并且可往复移动以对物体的图像进行光栅扫描;掩模具有邻近扫描板的孔,并可移动到所需位置 垂直于物镜的光轴的平面以确定检测范围;多个用于接收通过扫描板和掩模的光束的光接收装置,并输出关于物镜的焦点调整状态的信号 以及用于将进入光接收装置的光束彼此相关联以通过物镜的出射光瞳的不同区域的场透镜。
    • 92. 发明授权
    • Camera having a focus detecting apparatus
    • 具有焦点检测装置的相机
    • US4774539A
    • 1988-09-27
    • US102011
    • 1987-09-28
    • Yasuo SudaKazuhiko ArakawaKeiji OhtakaTakeshi KoyamaIchiro Ohnuki
    • Yasuo SudaKazuhiko ArakawaKeiji OhtakaTakeshi KoyamaIchiro Ohnuki
    • G02B7/34G03B3/00
    • G02B7/346
    • In a camera provided with a focus detecting apparatus in which the object light passed through a photo-taking lens is limited in its passage area by a field mask, the secondary image of an object to be photographed is obtained by a secondary imaging optical system and the secondary image is received by a line sensor and the imaging condition of the photo-taking lens is detected on the basis of the photoelectrically converted output of the line sensor, the opening area of the field mask is set so that the secondary image of the object to be photographed is directed to the both sides of the line sensor, and spot photometering sensors are disposed on the both sides of the line sensor and in the area to which the secondary image is applied, so that the photometering center of gravity is positioned substantially on the line sensor.
    • 在设置有焦点检测装置的相机中,通过摄像镜头的物体光通过场屏蔽被限制在其通过区域中,通过次级成像光学系统获得要拍摄的被摄体的二次图像, 次级图像被线传感器接收,并且基于线传感器的光电转换输出来检测摄影镜头的成像条件,设置场掩模的开口面积,使得二次图像 要拍摄的物体被引导到线传感器的两侧,并且点测光传感器设置在线传感器的两侧以及在施加二次图像的区域中,使得测光重心位于 基本上在线传感器上。
    • 97. 发明授权
    • Focus detecting apparatus
    • 对焦检测装置
    • US4618236A
    • 1986-10-21
    • US667818
    • 1984-11-02
    • Akira AkashiAkira IshizakiAkira HiramatsuYasuo SudaKeiji Ohtaka
    • Akira AkashiAkira IshizakiAkira HiramatsuYasuo SudaKeiji Ohtaka
    • G02B7/28G02B7/34G03B3/00G01J1/36
    • G02B7/34
    • In an apparatus wherein on the basis of a light passing through an objective lens, a plurality of images whose relative positional relation varies in accordance with the focus state of the objective lens are formed and these images are detected by photoelectric conversion element arrays and a predetermined operation is effected by the use of a plurality of photoelectrically converted signals obtained correspondingly to the respective images to thereby detect the focus state of the objective lens, there are provided first adder means for comparing the photoelectrically converted signals of the respective images in a predetermined relation and adding the smaller signal and second adder means for comparing the photoelectrically connected signals of the respective images in a predetermined relation and adding the greater signal and focus detection is effected by utilization of the result of the addition of one of the first and second adder means in accordance with the object condition, whereby accurate focus detection is made possible for any object.
    • 在基于通过物镜的光的基础上,形成与物镜的聚焦状态相对的位置关系变化的多个图像,并且这些图像由光电转换元件阵列和预定的 通过使用与各图像相对应地获得的多个光电转换信号来进行操作,从而检测物镜的聚焦状态,提供第一加法器装置,用于将预定关系的各图像的光电转换信号进行比较 并且添加较小的信号和第二加法器装置,用于比较预定关系中的各个图像的光电连接的信号,并且通过利用第一和第二加法器装置之一的相加结果来增加更大的信号和焦点检测 按照物体条件, 对任何对象都可以进行reby准确的焦点检测。
    • 100. 发明授权
    • Image taking apparatus and lens apparatus
    • 摄像装置和镜头装置
    • US07847853B2
    • 2010-12-07
    • US12188385
    • 2008-08-08
    • Yasuo Suda
    • Yasuo Suda
    • H04N5/225G03B7/099G03B19/12G03B7/28G03B13/00
    • G03B13/36G03B19/12H04N5/2253H04N5/23212
    • An image taking apparatus which can perform a focusing operation quickly is described. The image taking apparatus comprises a light splitting unit which splits a light flux from the image-taking lens into a plurality of light fluxes, a view finder optical system for observing an object image formed by the light flux from the image-taking lens, an image pickup element which photoelectrically converts the object image to an electric signal and a focus detection unit for detecting the focusing state of the image-taking lens according to a phase difference detection system. Here, the light splitting unit changes between a first state in which the light flux is directed to the view finder optical system and the focus detection unit and a second state in which the light flux is directed to the image pickup element and the focus detection unit.
    • 描述能快速进行聚焦操作的摄像装置。 图像摄取装置包括将来自摄像镜头的光束分解成多个光束的分光单元,用于观察由摄像镜头的光束形成的被摄体图像的取景器光学系统, 将物体图像光电转换成电信号的摄像元件和用于根据相位差检测系统检测摄像镜头的聚焦状态的焦点检测单元。 这里,分光单元在光束被引导到取景器光学系统和焦点检测单元的第一状态和光束被引导到图像拾取元件的第二状态和焦点检测单元之间变化 。