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公开(公告)号：US4792821A
公开(公告)日：1988-12-20
申请号：US137810
申请日：1987-12-24
申请人： Akira Akashi
发明人： Akira Akashi
CPC分类号： G02B7/36
摘要： This specification discloses an auto-focus apparatus for repetitively effecting focus detection and in-focus judgement and lens driving, and in particular an auto-focus apparatus designed such that in a case where the lens cannot be regarded as being in focus as a result of focus detection, when the deviation from the in-focus point is small, lens driving is effected and in-focus is judged to thereby shorten the time until the judgement of in-focus and when the lens driving when the deviation from the in-focus point is small has not been properly effected, the judgement of in-focus when the deviation from the in-focus point is small is inhibited to thereby enable an accurate in-focus judging operation to be accomplished.
摘要翻译： 本说明书公开了一种用于重复地进行焦点检测和对焦判断和透镜驱动的自动对焦装置，特别是设计成在透镜不能被视为聚焦的情况下的自动对焦装置 焦点检测时，当与对焦点的偏离小时，进行透镜驱动，并且判断为对焦，从而缩短直到焦点判断为止的时间，以及当透镜驱动偏离对焦时 点小的情况未被适当地实现，当与对焦点的偏离小时的对焦判断被抑制，从而能够实现精确的对焦判断操作。
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公开(公告)号：US4792668A
公开(公告)日：1988-12-20
申请号：US936746
申请日：1986-12-02
申请人： Akira Akashi , Akira Ishizaki , Yasuo Suda , Ichiro Ohnuki , Keiji Ohtaka , Takeshi Koyama
发明人： Akira Akashi , Akira Ishizaki , Yasuo Suda , Ichiro Ohnuki , Keiji Ohtaka , Takeshi Koyama
CPC分类号： G02B7/36
摘要： An apparatus for detecting a focusing state of an objective lens comprises optical means for forming light intensity distributions of object images whose relative positional relationship changes with the focusing state of the objective lens, sensing means having a plurality of sensors for sensing the light intensity distributions to produce first and second signals relating to the light intensity distributions, signal processing means for relatively displacing the first and second signals by determining correlation information and producing a signal for adjusting the focusing state of the objective lens in accordance with the correlation information, and altering means for altering a displacement range within which the first and second signals are relatively displaced.
摘要翻译： 用于检测物镜的聚焦状态的装置包括光学装置，用于形成相对位置关系随着物镜的聚焦状态而变化的物体图像的光强度分布，感测装置具有多个用于感测光强度分布的传感器 产生与光强分布有关的第一和第二信号，用于通过确定相关信息并产生用于根据相关信息调整物镜的聚焦状态的信号来相对移位第一和第二信号的信号处理装置，以及改变装置 用于改变第一和第二信号相对移位的位移范围。
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公开(公告)号：US4739157A
公开(公告)日：1988-04-19
申请号：US839951
申请日：1986-03-17
申请人： Akira Akashi , Akira Ishizaki , Yasuo Suda , Keiji Ohtaka , Hiroshi Ohmura
发明人： Akira Akashi , Akira Ishizaki , Yasuo Suda , Keiji Ohtaka , Hiroshi Ohmura
CPC分类号： G02B7/34
摘要： A correlation detecting method in which in order to detect the correlation between a pair of electrical signal trains which should effect a correlation operation, the operation is effected while the relative position of the signal trains is shifted and during the operation, the signal levels of at least the opposite ends of each signal train are reduced relative to the signals at a central position of the signal train, thereby mitigating the correlation error attributable to the signals near the ends of the signal trains.
摘要翻译： 一种相关检测方法，其中为了检测应实现相关操作的一对电信号序列之间的相关性，在信号列的相对位置偏移并且在操作期间，在 每个信号序列的相对端相对于信号序列的中心位置处的信号减小，从而减轻归因于信号序列末端附近的信号的相关误差。
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公开(公告)号：US4670645A
公开(公告)日：1987-06-02
申请号：US659950
申请日：1984-10-11
申请人： Keiji Ohtaka , Akira Akashi , Akira Ishizaki , Yasuo Suda , Akira Hiramatsu
发明人： Keiji Ohtaka , Akira Akashi , Akira Ishizaki , Yasuo Suda , Akira Hiramatsu
摘要： This specification discloses a focus detecting system in which a plurality of images are formed on the basis of light beams passing through different portions of the pupil of an objective lens and the focus state of the objective lens is detected from the relative positional relation of these images and wherein filters of which the density distribution varies along the direction of arrangement of photoelectric conversion elements are disposed in front of photoelectric conversion element arrays for detecting the distributions of quantity of light of the images, thereby accomplishing shading correction.
摘要翻译： 本说明书公开了一种焦点检测系统，其中基于通过物镜的光瞳的不同部分的光束形成多个图像，并且从这些图像的相对位置关系检测物镜的聚焦状态 并且其中密度分布沿着光电转换元件的排列方向变化的滤光器设置在用于检测图像的光量分布的光电转换元件阵列的前面，从而完成阴影校正。
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公开(公告)号：US4636056A
公开(公告)日：1987-01-13
申请号：US657764
申请日：1984-10-04
IPC分类号： G03B7/26
CPC分类号： G03B7/26
摘要： In a camera where the light metering circuit is supplied with electrical power by pushing the shutter release button to a first stroke, an electrical power supply circuit is constructed in such a way that when the time for which the shutter release button remains at the first stroke exceeds the prescribed period of time, the electrical power supply is stopped, and then when the release button is pushed down further to a second stroke, the electrical power supply starts again.
摘要翻译： 在照相机中，通过将快门释放按钮推向第一行程而将光计量电路提供电力，电源电路被构造成使得当快门释放按钮保持在第一行程的时间 超过规定的时间段，电源停止，然后当释放按钮进一步向下推动到第二冲程时，电源再次开始。
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