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1. 发明授权

US4878080A Camera zoom lens automatic magnification apparatus 失效
标题翻译：相机变焦镜头自动放大装置
公开(公告)号：US4878080A
公开(公告)日：1989-10-31
申请号：US232100
申请日：1988-08-15
申请人： Takamichi Takehana , Osamu Murayama , Hideaki Nakajima , Masatoshi Yamada , Makoto Hamada
发明人： Takamichi Takehana , Osamu Murayama , Hideaki Nakajima , Masatoshi Yamada , Makoto Hamada
IPC分类号： G03B13/36 , G02B7/08 , G02B7/28 , G03B3/10 , G03B5/00 , G03B13/34
CPC分类号： G02B7/282
摘要： A camera zoom lens automatic magnification apparatus for automatically changing the focal length of a zoom lens wherein distances to at least three points on a subject--at the center, to the left and to the right--in the angle of view are measured by a range finding device and a zoom lens driving device for changing the focal length of the zoom lens is controlled by a control device according to the output of the range finding device. The control device consists of a first decision device to decide which point is the nearest by comparing the distances to each point measured by the range finding device, a second decision device which, based on the lens focal length corresponding to the closest distance as found by the first decision device and on the depth of field for that focal length, checks if there is any other point's distance that is within the depth of field for that focal length, a third decision device which determines the zoom ratio according to a predetermined program using the result of the second decision device, and an output device which drives the zoom lens driving device according to the third decision device.
摘要翻译：一种用于自动改变变焦镜头的焦距的照相机变焦镜头自动放大装置，其中距离被摄体至少三个点的距离在中心，左视角和右视角被测量一个范围根据测距装置的输出，控制装置控制用于改变变焦镜头的焦距的变焦镜头驱动装置和变焦镜头驱动装置。控制装置包括：第一判定装置，用于通过比较由测距装置测量的每个点的距离来决定哪个点是最近的;第二判定装置，基于与最近距离相对应的透镜焦距，第一决策装置和该焦距的景深，检查该焦距是否存在在景深内的任何其他点的距离;第三判定装置，其根据预定的程序使用第二判定装置的结果，以及驱动根据第三判定装置的变焦镜头驱动装置的输出装置。

2. 发明授权

US5121153A Automatic focusing device 失效
标题翻译：自动聚焦装置
公开(公告)号：US5121153A
公开(公告)日：1992-06-09
申请号：US634481
申请日：1990-12-26
申请人： Masatoshi Yamada , Takamichi Takehana
发明人： Masatoshi Yamada , Takamichi Takehana
IPC分类号： G03B13/36 , G02B7/28 , G02B7/32 , G02B7/36
CPC分类号： G02B7/285
摘要： An automatic focusing system includes an active range finding system and a passive range finding system. An initial measurement is made by the active range finding system. If the initial measurement indicates that the lens focus is within a predetermined scope, control of further focusing is transferred immediately to the passive range finding system. If this condition is not met initially, lens focusing begins based on data from the active range finding system. The difference between measured range and the distance at which the lens is focused is monitored. When this difference falls below the predetermined scope, the range finding function is transferred to the passive range finding system. Also, the variance between the distance measured by the active range finding system and the distance at which the lens is focused is used to determine a degree of blur. If the degree of blur is less than a predetermined blur, the range finding function is transferred to the passive range finding system. In one embodiment, the active range finding system employs a plurality of spaced-apart light emitters that illuminate physically spaced-apart objects.

3. 发明授权

US5229806A Multi-point range finding device 失效
标题翻译：多点范围发现装置
公开(公告)号：US5229806A
公开(公告)日：1993-07-20
申请号：US861595
申请日：1992-04-01
申请人： Takamichi Takehana
发明人： Takamichi Takehana
IPC分类号： G01C3/06 , G02B7/32
CPC分类号： G02B7/32 , G01C3/06
摘要： In the multi point range finding device according to this invention, the photosensitive means 11 for detecting the light reflected from the subject (3) incudes the PSDs (20a) to (20c) which are disposed at positions and intervals corresponding to plural light-irradiating sources (4a to 4c), and the semiconductor resistance elements (21a to 21c), each of the PSDs (20a to 20c) and each of the semiconductor resistance elements (21a to 21c) are connected in series to each other, and a set of the PSDs (20a to 20c) as well as a set of the semiconductor resistance elements 21a to 21c are connected in parallel with one another. The photoelectric currents generated in the PSDs (20a to 20c) are outputted through common output electrodes E1 and E2. With this structure, a compact multipoint range finding device having high precision can be produced in low cost.

4. 发明授权

US4740806A Range finding device 失效
标题翻译：测距装置
公开(公告)号：US4740806A
公开(公告)日：1988-04-26
申请号：US29948
申请日：1987-03-25
申请人： Takamichi Takehana
发明人： Takamichi Takehana
IPC分类号： G01B11/00 , G01C3/00 , G01C3/06 , G01C3/10 , G02B7/32 , G03B13/36 , G03B3/00
CPC分类号： G02B7/32 , G01C3/10
摘要： A device for finding the range to an object for use in an automatic focusing camera consisting of a light emitting source for emitting light towards the object and a light detecting element for receiving reflected light from the object and producing an output for determining the range to the object. The light detecting element is spaced from the light emitting source by a given base length. The light emitting source consists of a plurality of light emitting elements aligned side-by-side in the horizontal direction orthogonally intersecting the base length.
摘要翻译：用于找到用于自动聚焦照相机的物体的范围的装置，所述自动聚焦照相机包括用于向物体发射光的发光源和用于接收来自物体的反射光的光检测元件，并产生用于确定对象的范围的输出目的。光检测元件与给定的基底长度与发光源间隔开。发光源由与基底长度正交的水平方向并排排列的多个发光元件构成。

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