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公开(公告)号：US4816861A
公开(公告)日：1989-03-28
申请号：US131084
申请日：1987-12-08
CPC分类号： G02B7/34
摘要： A focus condition detecting device which generated first and second light intensity distribution signals representing light intensity distributions on first and second arrays arranged to receive lights having passed through different areas of the exit pupil of an objective lens is arranged so as to divide the first light intensity distribution signal into a plurality of blocks. Each of the portions of the first light intensity distribution signal belonging to the respective blocks is shifted relative to the second light intensity distribution signal by sequentially changing an amount of shift, so that correlations therebetween are calculated for finding the amount of shift providing the highest correlation. In accordance with the amount of shift found to provide the highest correlation through the correlation calculation with use of the portion of the first light intensity distribution signal belonging to one of the blocks, the shift range for the succeeding correlation calculation with use of the portion of the first light intensity distribution signal belonging to another one of the blocks is restricted to shorten the period of time required for the succeeding correlation calculation.
摘要翻译： 一种聚焦条件检测装置，其生成表示第一和第二阵列上的光强度分布的第一和第二光强分布信号，所述第一和第二阵列布置成接收通过物镜的出射光瞳的不同区域的光，以便将第一光强度 分配信号分成多个块。 属于各个块的第一光强分布信号的每个部分相对于第二光强分布信号通过顺序地改变偏移量而偏移，从而计算它们之间的相关性，以找出提供最高相关性的偏移量 。 根据通过使用属于其中一个块的第一光强分布信号的部分的相关计算提供最高相关性的移位量，用于随后的相关计算的偏移范围，使用 限于属于另一个块的第一光强分布信号以缩短后续相关计算所需的时间。
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公开(公告)号：US4772912A
公开(公告)日：1988-09-20
申请号：US25498
申请日：1987-03-13
申请人： Tokuji Ishida , Masataka Hamada
发明人： Tokuji Ishida , Masataka Hamada
摘要： Present invention relates to a phase difference detection type focus detecting device which includes a pair of image forming lenses and a photo sensor array and detects the focus deviation in accordance with the positions of a pair of formed images respectively formed on the photo sensor array by the pair of image forming lenses. In such focus detecting device, the pair of image forming lenses are integrally molded of a plastic material, such that the change of the distance between the pair of image forming lenses due to the temperature change causes the error of the focus deviation. The error is made to zero by the detection of the ambient temperature and the compensation of the data basing on expansion or contraction of the plastic material with temperature.
摘要翻译： 本发明涉及一种相位差检测型焦点检测装置，其包括一对图像形成透镜和光传感器阵列，并且根据由光电传感器阵列上形成的一对成像图像的位置来检测聚焦偏差 一对成像透镜。 在这种聚焦检测装置中，一对图像形成透镜由塑料材料整体模制，使得由于温度变化引起的成像透镜之间的距离的变化导致聚焦偏差的误差。 通过检测环境温度和基于塑料材料随温度的膨胀或收缩的数据补偿，使误差为零。
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公开(公告)号：US4768054A
公开(公告)日：1988-08-30
申请号：US14923
申请日：1987-02-13
CPC分类号： G02B7/34
摘要： An automatic focusing device for a camera is disclosed. The automatic focusing device has sensing means for sensing light intensity distributions within narrow and wide areas of a field of view of an objective lens, respectively and can be operated in either operation mode of one-shot AF mode and continuous AF mode. When the one-shot AF mode is designated, said narrow area which is narrower than said wide area is automatically selected for focus condition detection and, when the continuous AF mode is designated, said wide area is automatically selected.
摘要翻译： 公开了一种用于相机的自动对焦装置。 自动聚焦装置具有用于分别感测物镜的视场的窄范围和宽范围内的光强分布的感测装置，并且可以以单次AF模式和连续AF模式的任一操作模式操作。 当指定单次AF模式时，自动选择比所述广域窄的所述窄区域进行焦点状态检测，并且当指定了连续AF模式时，自动选择所述广域。
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54.发明授权Focus detecting device including means for determining a priority of correlation calculations 失效焦点检测装置包括用于确定相关计算的优先级的装置
公开(公告)号：US4766302A
公开(公告)日：1988-08-23
申请号：US735569
申请日：1985-05-17
申请人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
发明人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
CPC分类号： G02B7/34
摘要： In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.
摘要翻译： 在用于检测物镜的聚焦条件的焦点检测系统中，设置一对光传感器阵列，每个光传感器阵列具有沿一个方向排列的多个光电池，以接收通过分别透镜系统的第一图像和第二图像， 光传感器阵列产生第一原始信号组和第二原始信号组，每个信号组对应于投射到其上的图像的光强度。 处理装置以这样的方式处理原始信号组，使得第一原始信号组分别被分成多个块，并且选择第一原始信号组的块中的一个，并且检测到在 选择块最佳重合。
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公开(公告)号：US5517274A
公开(公告)日：1996-05-14
申请号：US314930
申请日：1994-09-29
申请人： Masataka Hamada , Tokuji Ishida , Hiroshi Ootsuka
发明人： Masataka Hamada , Tokuji Ishida , Hiroshi Ootsuka
CPC分类号： G02B7/36
摘要： An automatic focusing apparatus of a camera according to the present invention includes: a focus detector which detects repeatedly focus conditions of a photographic lens and outputs successively focus signals corresponding to the focus conditions; a drive unit for driving the photographic lens for focus adjustment; a predictor for predicting an in-focus point from the plurality of focus signals from the focus detector; a control unit for controlling the drive unit to drive the photographic lens toward the in-focus point predicted by the predictor; an auxiliary light projector for projecting auxiliary light onto an object to enable detecting operation of the focus detector; and a forbidding device for forbidding the control of drive by the control unit while the auxiliary light is projected by the auxiliary light projector.
摘要翻译： 根据本发明的照相机的自动对焦装置包括：焦点检测器，其检测摄影镜头的重复聚焦条件，并输出对应于焦点条件的连续聚焦信号; 用于驱动用于焦点调节的摄影镜头的驱动单元; 预测器，用于从所述焦点检测器的所述多个焦点信号中预测对焦点; 控制单元，用于控制驱动单元将照相镜头朝向由预测器预测的对焦点驱动; 辅助光投影仪，用于将辅助光投射到物体上，以检测焦点检测器的操作; 以及在由辅助光投影仪投射辅助光时禁止控制单元的驱动控制的禁止装置。
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公开(公告)号：US5264889A
公开(公告)日：1993-11-23
申请号：US686150
申请日：1991-04-16
申请人： Tokuji Ishida , Masataka Hamada , Hiroshi Ootsuka , Hiroshi Ueda
发明人： Tokuji Ishida , Masataka Hamada , Hiroshi Ootsuka , Hiroshi Ueda
摘要： An apparatus has an automatic focus detection device. The automatic focus detection device detects a focus condition of a taking lens by using a plurality of detection areas. These detection areas are displayed on a finder. The plurality of detection area are displayed on the finder in a specific order according to a situation of the camera by throwing a switch designating a detection area.
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公开(公告)号：US5159383A
公开(公告)日：1992-10-27
申请号：US757948
申请日：1991-09-12
申请人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
发明人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.
摘要翻译： 在用于检测物镜的聚焦条件的焦点检测系统中，设置一对光传感器阵列，每个光传感器阵列具有沿一个方向排列的多个光电池，以接收通过分别透镜系统的第一图像和第二图像， 光传感器阵列产生第一原始信号组和第二原始信号组，每个信号组对应于投射到其上的图像的光强度。 处理装置以这样的方式处理原始信号组，使得第一原始信号组分别被分成多个块，并且选择第一原始信号组的块中的一个，并且检测到在 选择块最佳重合。
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公开(公告)号：US5107291A
公开(公告)日：1992-04-21
申请号：US628921
申请日：1990-11-29
申请人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
发明人： Tokuji Ishida , Katsumi Kozakai , Masataka Hamada
IPC分类号： G02B7/34
CPC分类号： G02B7/34
摘要： In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photosensor arrays each having a plurality of photocells lined up in one direction to receive a first image and second image passed through respectively a lens system and the photosensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original signal groups are respectively divided into a plurality of blocks, and one of the blocks of the first original signal groups is selected and it is detected that in what group in the selected block best coincidence occurs.
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公开(公告)号：US4967224A
公开(公告)日：1990-10-30
申请号：US308412
申请日：1989-02-09
申请人： Masataka Hamada , Tokuji Ishida
发明人： Masataka Hamada , Tokuji Ishida
IPC分类号： G02B7/36
CPC分类号： G02B7/36
摘要： An automatic focusing device for a camera is disclosed.The automatic focusing device has focus detection means for detecting defocus amount of the image, object movement detection means for detecting movement of the object based on defocus data detected by the focus detection means and correction means for correcting the detected defocus amount according to the detected movement of the object.The objective lens of the camera is driven according to the corrected defocus amount for focus adjustment.
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公开(公告)号：US4956659A
公开(公告)日：1990-09-11
申请号：US455825
申请日：1989-12-15
申请人： Masataka Hamada , Tokuji Ishida , Yasuaki Adaka
发明人： Masataka Hamada , Tokuji Ishida , Yasuaki Adaka
CPC分类号： G02B7/36
摘要： An automatic focus adjusting apparatus for adjusting automatically a focus condition of an objective lens includes a CCD array for receiving light from an object and producing an accumulated charge signal representing the accumulated charge. Using the accumulated charge signal it is detected whether or not the brightness of the object is above a predetermined level, and at the same time, the focusing condition of the objective lens is calculated. Using the calculated result, the focusing condition of the objective lens is adjusted in a controlled manner such that: when the brightness of the object is above the predetermined level, the objective lens moves even during the CCD array is operated to carry out the charge accumulation; but when the brightness of the object is below the predetermined level, the CCD array is operated only during when the objective lens is making no movement.
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