公开(公告)号：US5140359A

公开(公告)日：1992-08-18

申请号：US684499

申请日：1991-04-15

申请人： Masaki Higashihara ,  Ichiro Ohnuki ,  Akira Akashi ,  Terutake Kadohara ,  Hidehiko Fukahori ,  Yasuo Suda ,  Kenji Itoh

发明人： Masaki Higashihara ,  Ichiro Ohnuki ,  Akira Akashi ,  Terutake Kadohara ,  Hidehiko Fukahori ,  Yasuo Suda ,  Kenji Itoh

IPC分类号： G02B7/34

CPC分类号： G02B7/34

摘要： An auto focusing device for foreseeing-calculating lens driving data for making a lens focus on an object after a predetermined time on the basis of the past focus adjusting operation data and the latest focus detection data. A plurality of distance measuring points are read to effect distance measurements at a time. Data suitable for foreseeing calculation is found from the respective distance measuring points, and the data suitable for foreseeing calculation is specified as the latest focus detection data used for the foreseeing calculation.

摘要翻译： 一种自动对焦装置，用于根据过去的焦点调整操作数据和最近的焦点检测数据，在预定时间之后预测计算用于使镜头聚焦在物体上的透镜驱动数据。 读取多个距离测量点以一次实现距离测量。 从相应距离测量点发现适合于预测计算的数据，并将适合于预测计算的数据指定为用于预计计算的最新焦点检测数据。

公开(公告)号：US4859842A

公开(公告)日：1989-08-22

申请号：US313343

申请日：1989-02-21

申请人： Yasuo Suda ,  Ichiro Ohnuki ,  Akira Akashi ,  Akira Ishizaki ,  Keiji Ohtaka ,  Takeshi Koyama

发明人： Yasuo Suda ,  Ichiro Ohnuki ,  Akira Akashi ,  Akira Ishizaki ,  Keiji Ohtaka ,  Takeshi Koyama

IPC分类号： G02B7/34

CPC分类号： G02B7/346

摘要： A focus detection apparatus includes:a first optical device for forming light distributions, associated with an object image, whose relative positional relationship chnages along a first direction in accordance with a focusing state of the objective lens;a second optical device for forming light distributions, associated with the object image, whose relative positional relationship changes along a second direction in accordance with the focusing state of the objective lens;a first sensing unit, having a plurality of photosensors, for forming an electrical signal associated with the focusing state of the objective lens in order to sense the light distributions formed by the first optical device; anda second sensing unit, having a plurality of photosensors, for forming an electrical signal associated with the focusing state of the objective lens in order to sense the light distribution formed by the second optical device.

摘要翻译： 焦点检测装置包括：第一光学装置，用于形成与物体图像相关联的光分布，其相对位置关系根据物镜的聚焦状态沿着第一方向检测; 用于形成与所述物体图像相关联的光分布的第二光学装置，其相对位置关系根据所述物镜的聚焦状态沿第二方向变化; 具有多个光电传感器的第一感测单元，用于形成与所述物镜的聚焦状态相关联的电信号，以便感测由所述第一光学装置形成的光分布; 以及具有多个光电传感器的第二感测单元，用于形成与物镜的聚焦状态相关联的电信号，以便感测由第二光学装置形成的光分布。

公开(公告)号：US4800410A

公开(公告)日：1989-01-24

申请号：US70382

申请日：1987-07-07

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

IPC分类号： G02B7/34 ,  G03B13/36 ,  G03B3/00 ,  G01J1/20

CPC分类号： G02B7/34

摘要： A focus detecting apparatus in which light distributions having their relative positional relation varying in conformity with the focus adjusted state of an objective optical system and based on an object are received by a light-receiving device having a plurality of picture elements and the output signal of the light-receiving device is operated in two different processes, and an evaluated values dependent on the contrast is operated in each of the processes and the evaluated values are compared with each other, and the result calculated in the process of better contrast is adopted as a value indicative of the focus adjusted state of the objective optical system.

摘要翻译： 一种聚焦检测装置，其具有根据物镜光学系统的焦点调整状态而变化的并且基于物体的相对位置关系的光分布由具有多个像素的光接收装置接收，并且其输出信号 光接收装置在两个不同的处理中操作，并且在每个处理中操作依赖于对比度的评估值，并且将评估值相互比较，并且在较好对比度的过程中计算的结果被采用为 指示物镜光学系统的焦点调整状态的值。

公开(公告)号：US4688920A

公开(公告)日：1987-08-25

申请号：US778306

申请日：1985-09-20

申请人： Yasuo Suda ,  Hiroshi Ohmura ,  Akira Ishizaki ,  Akira Akashi ,  Keiji Ohtaka

发明人： Yasuo Suda ,  Hiroshi Ohmura ,  Akira Ishizaki ,  Akira Akashi ,  Keiji Ohtaka

IPC分类号： G03B13/36 ,  G02B7/34 ,  G03B3/00

CPC分类号： G02B7/343

摘要： A system for detecting the focus of an imaging lens relative to an object includes re-imaging means disposed on the imaging side of the imaging lens and having pupil dividing means for dividing the pupil of the imaging lens into a plurality of areas, the re-imaging means forming a secondary object image of the object from a light beam passed through the plurality of divided areas, an optical system disposed near the predetermined imaging plane of the imaging lens and having a reflecting surface for directing a primary object image of the object to the re-imaging means, and light-receiving means on which the secondary object image by the re-imaging means is formed.

摘要翻译： 用于检测成像透镜相对于物体的焦点的系统包括设置在成像透镜的成像侧上的重新成像装置，并具有用于将成像透镜的光瞳分成多个区域的光瞳分割装置， 成像装置，从穿过所述多个分割区域的光束形成所述物体的次要物体图像;光学系统，设置在所述成像透镜的预定成像平面附近，并具有用于将所述物体的主要物体图像指向的反射表面 重新成像装置和由再成像装置形成辅助物体图像的光接收装置。

公开(公告)号：US5367153A

公开(公告)日：1994-11-22

申请号：US969352

申请日：1992-10-30

申请人： Yasuo Suda ,  Akira Yamada ,  Yukio Odaka ,  Akira Akashi

发明人： Yasuo Suda ,  Akira Yamada ,  Yukio Odaka ,  Akira Akashi

IPC分类号： G02B7/28 ,  G01J1/20

CPC分类号： G02B7/28

摘要： A focus detection apparatus includes an optical system for forming first and second optical distributions associated with object images whose relative positional relationship is changed in accordance with an imaging state of an imaging optical system subjected to focus detection, a photoelectric conversion element, having a plurality of picture elements, for outputting first and second signals respectively corresponding to the first and second optical distributions, and a calculating unit for performing filter processing of the first and second signals, sequentially displacing the first and second signals relative to each other on the calculation basis, calculating an evaluation amount representing a coincidence between the first and second signals at the relatively displaced positions, obtaining positional deviations between the first and second object images on the basis of a change in evaluation amount, and detecting the imaging state of the imaging optical system on the basis of the deviations. The filter processing is performed using a filter determined by the relatively displaced positions.

摘要翻译： 焦点检测装置包括：光学系统，用于形成与根据成像光学系统进行焦点检测的成像状态相对地改变相对位置关系的对象图像相关联的第一和第二光学分布;光电转换元件，具有多个 用于输出分别对应于第一和第二光学分布的第一和第二信号的图像元素，以及用于执行第一和第二信号的滤波处理的计算单元，在计算的基础上依次移位第一和第二信号， 计算表示相对位移位置处的第一和第二信号之间的一致性的评估量，基于评估量的变化获得第一和第二对象图像之间的位置偏差，并且检测成像光学系统的成像状态 的基础 e偏差。 使用由相对移位的位置确定的滤波器来执行滤波处理。

公开(公告)号：US4825239A

公开(公告)日：1989-04-25

申请号：US226557

申请日：1988-08-01

申请人： Yasuo Suda ,  Akira Akashi ,  Akira Ishizaki ,  Hiroshi Ohmura ,  Keiji Ohtaka

发明人： Yasuo Suda ,  Akira Akashi ,  Akira Ishizaki ,  Hiroshi Ohmura ,  Keiji Ohtaka

IPC分类号： G03B13/36 ,  G01C3/00 ,  G01C3/06 ,  G01C3/08 ,  G02B7/28 ,  G02B7/34 ,  G03B3/00

CPC分类号： G02B7/34

摘要： A distance detection apparatus comprising: a distance detection unit for detecting information on a distance to an object, a controller for operating the detection means a plurality of times, and for processing a plurality of information on the distance and outputting an optimum distance information; a status detector for detecting a status of the object for outputting information on the status; and a circuit for altering an information processing method of the controller, in accordance with the output of the status detection means.

摘要翻译： 一种距离检测装置，包括：距离检测单元，用于检测与物体的距离的信息，多个操作所述检测装置的控制器，用于处理关于距离的多个信息并输出最佳距离信息; 状态检测器，用于检测用于输出关于状态的信息的对象的状态; 以及根据状态检测装置的输出来改变控制器的信息处理方法的电路。

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

IPC分类号： G02B7/36 ,  G03B3/00

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。

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

IPC分类号： G02B7/34 ,  G01J1/20 ,  G03B3/00

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。

公开(公告)号：US4833313A

公开(公告)日：1989-05-23

申请号：US70776

申请日：1987-07-07

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

IPC分类号： G02B7/34 ,  G03B13/36

CPC分类号： G02B7/34

摘要： An apparatus for detecting the focus state of an optical system has optical apparatus for forming first and second light distributions of an object. The relative positional relationship of the light distributions varies in accordance with the focus state of the optical system. A light receiving device has first and second ranges, each having a plurality of picture elements. The first and second ranges respectively receive the first and second light distributions. Operation circuitry manipulates the output signals from the first and second ranges by relatively mathematically moving them to calculate a value representing the focus state of the optical system. The operation circuitry selectively executes a first operation in which the number of signals corresponding to each other is varied, and a second operation in which the number of signals corresponding to each other is kept constant.

摘要翻译： 用于检测光学系统的聚焦状态的装置具有用于形成物体的第一和第二光分布的光学装置。 光分布的相对位置关系根据光学系统的聚焦状态而变化。 光接收装置具有第一和第二范围，每个具有多个图像元素。 第一和第二范围分别接收第一和第二光分布。 操作电路通过相对数学地移动它们来操纵来自第一和第二范围的输出信号，以计算表示光学系统的聚焦状态的值。 操作电路选择性地执行其中相互对应的信号数量改变的第一操作，并且彼此对应的信号数量保持不变的第二操作。

公开(公告)号：US4812869A

公开(公告)日：1989-03-14

申请号：US70383

申请日：1987-07-07

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

IPC分类号： G02B7/28 ,  G02B7/34 ,  G03B13/36 ,  G03B3/00 ,  G01J1/20

CPC分类号： G02B7/34

摘要： First and second light distributions having their relative positional relation varying in conformity with the focus adjusted state of an objective optical system and based on an object are received by a plurality of picture elements, and the range of use of the picture element row can be changed when a value indicative of the focus adjusted state is calculated by the use of the signals from the picture elements.

摘要翻译： 其相对位置关系根据物镜光学系统的焦点调整状态而变化并且基于物体的第一和第二光分布被多个像素接收，并且可以改变像素行的使用范围 当通过使用来自图像元素的信号来计算指示焦点调整状态的值时。