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公开(公告)号：US5196881A
公开(公告)日：1993-03-23
申请号：US741785
申请日：1991-08-06
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
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公开(公告)号：US5040015A
公开(公告)日：1991-08-13
申请号：US508274
申请日：1990-04-11
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
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公开(公告)号：US4969006A
公开(公告)日：1990-11-06
申请号：US386029
申请日：1989-07-25
CPC分类号： G02B7/34
摘要： There is provided an automatic focus control device for use in a camera system comprising a focus detection control means for continuously driving a motor from the time when it is judged that a focus condition of a photograph lens can not be detected until it is judged that the focus condition can be detected, and a rotation number control means for controlling the rotation speed of said motor driven by said focus detection control means in accordance with a constant data designating a relationship between the rotation number of said motor and a unit of a defocus value. Accordingly, the moving speed of said photograph lens is controlled in accordance with defocus variation during the movement of said photograph lens, resulting in that the infocus position of the object can be detected by a low contrast search without overrunning the infocus position, even though the object is positioned far from an available range of the focus detection.
摘要翻译： 提供了一种用于照相机系统中的自动对焦控制装置，包括焦点检测控制装置，用于从判断为无法检测到照相镜的焦点状态的时刻连续地驱动电动机，直到判断为 可以检测焦点条件;以及旋转数控制装置，用于根据指定所述电动机的转数与散焦值单位之间的关系的恒定数据来控制由所述焦点检测控制装置驱动的所述电动机的转速 。 因此，根据在所述照相镜的移动期间的散焦变化来控制所述照相镜的移动速度，导致可以通过低对比度搜索来检测物体的聚焦位置而不超越聚焦位置，即使 物体远离焦点检测的可用范围。
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公开(公告)号：US4924250A
公开(公告)日：1990-05-08
申请号：US374590
申请日：1989-06-28
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5319412A
公开(公告)日：1994-06-07
申请号：US22780
申请日：1993-02-23
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5192966A
公开(公告)日：1993-03-09
申请号：US901797
申请日：1992-06-22
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US4816856A
公开(公告)日：1989-03-28
申请号：US32738
申请日：1987-03-30
CPC分类号： G02B7/34
摘要： In an automatic focus control device of a camera there are provided defocus amount calculation means for calculating a defocus amount for a predetermined focus plane of a photographic lens in the camera on the basis of the electric signal generated by a light receiving means, comparing means for comparing the obtained value on the basis of the calculated defocus amount with a reference value, control means controlling driving speed of the photographic lens by the lens driving means in response to the comparison result of a comparing means, photographic condition setting means for setting the photographic condition and reference value setting means for setting said reference value in response to the set photographic condition.
摘要翻译： 在照相机的自动聚焦控制装置中，设置散焦量计算装置，用于根据由光接收装置产生的电信号计算照相机中的摄影镜头的预定聚焦平面的散焦量，比较装置， 根据计算出的散焦量与获得的参考值进行比较的控制装置，根据比较装置的比较结果，通过透镜驱动装置控制摄影透镜的驱动速度的控制装置，用于设置摄影的摄影条件设定装置 条件和参考值设置装置，用于响应于所设置的拍摄条件设置所述参考值。
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公开(公告)号：US5084722A
公开(公告)日：1992-01-28
申请号：US626335
申请日：1990-12-13
CPC分类号： G03B7/20 , G02B7/346 , G03B7/091 , G03B7/09972
摘要： A focus condition detecting device which eliminates a wasteful operation thereof to obtain optical results of detection in a shortest period of time and wherein it can be discriminated correctly depending upon data read from a lens regarding an exit pupil of the lens whether or not detection of a focus condition is possible. The device comprises an optical means which forms a plurality of pairs of light images from beams of light from pairs of areas of an exit pupil plane of an interchangeable lens. Relative displacements between the light images are detected by a plurality of focus condition detecting means. Data regarding optical characteristics of the lens are read from the lens, and in accordance with the data thus read, those ones of the focus condition detecting means for which detection of a focus condition is possible are selected from an optical relationship between the optical means and the exit pupil of the lens. An in-focus condition is finally determined from focus condition signals produced from the selected focus condition detecting means.
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29.发明授权System for detecting the focus condition of a cata-dioptric lens and interchangeable lens for use therewith 失效用于检测cata-Dioptic镜片和可互换镜头的焦点状态的系统
公开(公告)号：US4908505A
公开(公告)日：1990-03-13
申请号：US193732
申请日：1988-05-13
IPC分类号： G02B7/34
CPC分类号： G02B7/346
摘要： A focus condition detecting system for a cata-dioptric lens wherein it can be judged correctly whether or not detection of a focus condition is possible, and a cata-dioptric lens for use with the focus condition detecting system. The system comprises a focus condition detecting means for detecting a relative displacement between a pair of images of light formed by a pair of optical means from beams of light from a pair of different areas of a plane of an exit pupil of a cata-dioptric lens to detect a focus condition of the lens. Data regarding outer and inner radii of an exit pupil or some other peculiar data are fixedly stored in the lens. The data are successively forwarded to a camera body, and depending upon the data, it is judged whether optically accurate detection of a focus condition is possible from a combination of the optical means and the lens. When the judgment is affirmative, the detecting means is rendered operative. A set of interchangeable lenses which contribute to improvement in function of a body of a camera and also to development of a camera system is also provided.
摘要翻译： 一种用于数位屈光度透镜的对焦条件检测系统，其中可以正确地判断是否可以检测到焦点条件，以及与聚焦条件检测系统一起使用的数位屈光度透镜。 该系统包括焦点条件检测装置，用于检测由一对光学装置形成的光的一对图像之间的相对位移，来自来自光束透镜的出射光瞳平面的一对不同区域的光束 以检测透镜的聚焦条件。 关于出射光瞳的外半径和内半径的数据或一些其他特殊数据的数据被固定地存储在透镜中。 数据被顺序地转发到相机机身，并且根据数据，判断是否可以从光学装置和透镜的组合进行光学准确的聚焦条件的检测。 当判断为肯定时，检测装置可操作。 还提供了一组有助于改善相机主体功能的可互换镜头，并且还提供了相机系统的开发。
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公开(公告)号：US4878076A
公开(公告)日：1989-10-31
申请号：US362454
申请日：1989-03-20
CPC分类号： G03B7/20 , G03B7/097 , G03B7/09972
摘要： An exposure controlling system wherein functional restrictions are little even when a cata-dioptric lens is mounted as an interchangeable lens and also provide an interchangeable lens for such an exposure controlling system. The exposure controlling system comprises means for reading data regarding aperture values of an interchangeable lens from the lens, and a light measuring means. In response to outputs of the two means, a display means displays, when the lens is an ordinary lens, a combination of an aperture value and an exposure time to which the ordinary lens can be controlled to provide an appropriate exposure, and when the lens is a cata-dioptric lens, a fixed aperture value and an exposure time for the fixed aperture value of the cata-dioptric lens which time provides an appropriate exposure. A cata-dioptric lens as the interchangeable lens comprises means for receiving a reading instruction signal from a camera body, and means for successively forwarding data peculiar to the cata-dioptric lens to the body in response to the reading instruction signal. The data include data regarding a fully open aperture value and data regarding a maximum aperture value, and the two values are equal to each other.
摘要翻译： 一种曝光控制系统，其中功能限制甚至在将CTA-屈光镜安装为可互换镜头时也很少，并且还为这种曝光控制系统提供可互换镜头。 曝光控制系统包括用于从透镜读取关于可互换镜头的光圈值的数据的装置和光测量装置。 响应于这两个装置的输出，当透镜是普通透镜时，显示装置显示可以控制普通透镜以提供适当曝光的光圈值和曝光时间的组合，并且当透镜 是一个数位屈光度透镜，固定光圈值和曝光时间，用于时间提供适当曝光的数位屈光度透镜的固定光圈值。 作为可互换镜头的数位屈光透镜包括用于接收来自照相机主体的读取指令信号的装置，以及用于响应于读取指令信号将数据 - 屈光透镜特有的数据连续转发到身体的装置。 数据包括关于全开孔径值的数据和关于最大光圈值的数据，并且两个值彼此相等。
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