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公开(公告)号：US4293206A
公开(公告)日：1981-10-06
申请号：US114174
申请日：1980-01-22
摘要： A camera including an automatic focalizing device with which the camera will automatically focus only upon objects within a predetermined range set by the photographer. The wiper of a potentiometer is coupled to the lens so that its operative position is determined by the position of the lens. The wiper is also electrically coupled to respective positive and negative comparison inputs of first and second comparators to the other inputs of which are applied voltages from a second potentiometer which are determinative of the selected range at which focalization may be achieved. The combined outputs of the comparators are coupled to the control input of an analog switch device coupled between the output of a focus detector and the control circuit of a lens positioning motor.
摘要翻译： 一种包括自动聚焦装置的照相机，照相机将自动聚焦在由摄影者设定的预定范围内的物体上。 电位计的擦拭器耦合到透镜，使得其操作位置由透镜的位置确定。 擦拭器还电耦合到第一和第二比较器的相应的正和负比较输入，其另一个输入是来自第二电位计的施加电压，该第二电位计决定可以实现聚焦的选定范围。 比较器的组合输出耦合到耦合在焦点检测器的输出和透镜定位电动机的控制电路之间的模拟开关装置的控制输入。
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公开(公告)号：US4313657A
公开(公告)日：1982-02-02
申请号：US113888
申请日：1980-01-21
申请人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura , Harumi Aoki
发明人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura , Harumi Aoki
摘要： A display device for a camera in which both an electrical focus detecting and indicating device and an exposure meter or automatic exposure control device are incorporated into a single display element provided in the view finder of the camera. Switching means is coupled to receive on input contacts thereof signals representing both a focus indication and a shutter speed. Normally, the display device displays information in response to the focus detection and indication signal. When the shutter button of the camera is depressed to a first position, the switching means is changed over to display the shutter speed. The display device may be implemented either by an array of LED display elements or a liquid crystal display element.
摘要翻译： 一种用于照相机的显示装置，其中电焦点检测和指示装置以及曝光表或自动曝光控制装置都被并入设置在相机的取景器中的单个显示元件中。 开关装置被耦合以在其输入触点上接收表示聚焦指示和快门速度的信号。 通常，显示装置响应于焦点检测和指示信号显示信息。 当相机的快门按钮被按下到第一位置时，切换装置被切换以显示快门速度。 显示装置可以由LED显示元件或液晶显示元件的阵列来实现。
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公开(公告)号：US4230401A
公开(公告)日：1980-10-28
申请号：US971122
申请日：1978-12-19
申请人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
发明人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
CPC分类号： G02B7/343
摘要： A focus detecting device in a camera having an optical member or an optical system for obtaining two images from an object and an optical member for displacing said two images in opposite directions or displacing one of said two images. Two minute photoelectric conversion element groups are used for converting variations in light quantity of portions of the object into electrical signals. A photographing lens projects the image of the object onto the minute photoelectric conversion element groups. A circuit calculates outputs ##EQU1## from the outputs of minute photoelectric conversion elements forming the minute photoelectric conversion element groups. A circuit which has a first calculation function for calculating V.sub.out-3 =V.sub.out-1 +V.sub.out-2 and a second calculation function for calculating V.sub.out-4 =V.sub.out-1 -V.sub.out-2 so that when V.sub.out-3 becomes higher than a predetermined value, different outputs are produced under conditions that V.sub.out-4 >.epsilon..sub.1, .epsilon..sub.1 .gtoreq.V.sub.out-4 .gtoreq. .epsilon..sub.2, and .epsilon..sub.2 >V.sub.out-4. A display produces different displays according to the different outputs where n is the number of the minute photoelectric conversion elements forming each of the two minute photoelectric conversion element groups, m is a number of a minute photoelectric conversion element, i is the output of a minute photoelectric conversion element in one of the two minute photoelectric conversion element groups, i' is the output of a minute photoelectric conversion element in the other minute photoelectric conversion element group, .epsilon..sub.1 and .epsilon..sub.2 are predetermined constants.
摘要翻译： 一种具有用于从物体获得两个图像的光学构件或光学系统的相机中的焦点检测装置，以及用于使所述两个图像相反方向移位或移位所述两个图像之一的光学构件。 使用两分钟的光电转换元件组将物体的光量的变化转换为电信号。 摄影镜头将物体的图像投影到微小光电转换元件组上。 电路从形成微小光电转换元件组的微小光电转换元件的输出中计算输出
。 具有用于计算Vout-3 = Vout-1 + Vout-2的第一计算功能的电路和用于计算Vout-4 = Vout-1-Vout-2的第二计算功能，使得当Vout-3变得高于预定 在Vout-4>ε1，ε1 / = Vout-4> / =ε2和ε2> Vout-4的条件下产生不同的输出。 显示器根据不同的输出产生不同的显示，其中n是形成两分钟光电转换元件组中的每一个的微小光电转换元件的数量，m是微小光电转换元件的数量，i是分钟的输出 在两分光电转换元件组之一中的光电转换元件，i'是另一微分光电转换元件组中的微小光电转换元件的输出，ε1和ε2是预定常数。 -
公开(公告)号：US4265520A
公开(公告)日：1981-05-05
申请号：US964110
申请日：1978-11-27
申请人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
发明人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
摘要： A focus detecting device in a single lens reflex camera having a lens system and an optical image splitter for splitting an object image into various partial images disposed at a position optically equivalent to that of a film surface in said single lens reflex camera. An array of photo-electric conversion devices are arranged into at least two rows, each row having a plurality of photo-electric conversion elements. The rows are disposed symmetrically with respect to a center line. The device includes an image projecting device for projecting the partial images onto the photo-electric conversion arrays. The projecting device has an optical axis which optically corresponds to said center line, the output of said conversion array defined by ##EQU1## The output of the conversion array has a maximum value when proper focus is obtained. In the equation: n is the number of said photo-electric conversion elements, p is the parameter of the mutual positional relationship of said photo-electric conversion elements for obtaining output difference, m is the element number of said photo-electric conversion elements, i and i' are outputs corresponding to incident light quantities of photo-electric conversion elements in said rows, and l is an integer defined by 1.ltoreq.l.ltoreq.(n-1) and in the range of p.
摘要翻译： 一种具有透镜系统和光学图像分离器的单一透镜反射相机中的焦点检测装置，用于将物体图像分割成与所述单一透镜反射相机中与胶片表面光学相同的位置处的各种部分图像。 光电转换装置的阵列被布置成至少两行，每行具有多个光电转换元件。 行相对于中心线对称设置。 该装置包括用于将部分图像投影到光电转换阵列上的图像投影装置。 投影装置具有光轴对应于所述中心线的光轴，所述转换阵列的输出由
定义。当获得适当的焦点时，转换阵列的输出具有最大值。 在等式中：n是所述光电转换元件的数量，p是用于获得输出差的所述光电转换元件的相互位置关系的参数，m是所述光电转换元件的元件数， i和i'是对应于所述行中的光电转换元件的入射光量的输出，并且l是由1≤n（n-1）定义的整数，并且在p的范围内。 -
公开(公告)号：US4253751A
公开(公告)日：1981-03-03
申请号：US46962
申请日：1979-06-08
申请人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
发明人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
CPC分类号： G02B7/305
摘要： A focus detection optical system where the image of an object is divided into two images thereof, and the two images are shifted in the opposite directions or one of the two images is shifted. The two images are projected respectively onto two photoelectric conversion element groups adapted to convert the variations in relative position of the two images into electrical signals. A focus detecting device comprises: a calculating circuit for providing outputs V.sub.out1(m), V.sub.out2(m) and V.sub.out3(m) from the outputs of photoelectric conversion elements forming the photoelectric conversion element groups,V.sub.out1(m) =.vertline.log(i'.sub.m /i.sub.m+1).vertline.V.sub.out2(m) =.vertline.log(i.sub.m /i'.sub.m+1).vertline.V.sub.out3(m) =V.sub.out1(m) -V.sub.out2(m),where: m=1, 2, 3, . . . and (n-1), being the number in order of the photoelectric conversion elements, n is the number of the photoelectric conversion elements forming each photoelectric conversion element group, and i.sub.1 through i.sub.n and i'.sub.1 through i'.sub.n are the outputs of the photoelectric conversion elements which are proportional to the quantities of light applied thereto, respectively. A decision circuit is provided for determining the sign of said output V.sub.out3(m) and a circuit counts the number of outputs V.sub.out3(m) having the same sign.
摘要翻译： 一种焦点检测光学系统，其中物体的图像被分成两个图像，并且两个图像在相反方向上移位或两个图像中的一个被移位。 两个图像分别投影到适于将两个图像的相对位置的变化转换为电信号的两个光电转换元件组上。 焦点检测装置包括：计算电路，用于从形成光电转换元件组的光电转换元件的输出Vout1（m）= | log（i'）提供输出Vout1（m），Vout2（m）和Vout3（m） m / im + 1）| Vout2（m）= | log（im / i'm + 1）| Vout3（m）= Vout1（m）-Vout2（m），其中：m = 1,2,3。 。 。 和（n-1）是光电转换元件的数量，n是形成每个光电转换元件组的光电转换元件的数量，i1至in和i'1至i'n的输出是 光电转换元件分别与施加到其上的光量成比例。 提供用于确定所述输出Vout3（m）的符号的判定电路，并且电路对具有相同符号的输出Vout3（m）的数量进行计数。
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公开(公告)号：US4293205A
公开(公告)日：1981-10-06
申请号：US45498
申请日：1979-06-04
申请人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
发明人： Seijiro Tokutomi , Masao Jyojiki , Kazuo Nakamura
CPC分类号： G02B7/305
摘要： A focus detecting device for a lens system having a subsystem for dividing the image of an object into two optically equal images and for shifting the two images of the object in the opposite directions or shifting only one of the two images of the object. Two photoelectric conversion element groups are adapted to convert the variations in relative position of the two images of the object into electrical signals. An optical system projects the images of the object onto the two photoelectric conversion element groups, in which the following outputs are obtained from the outputs of photoelectric conversion elements forming the two photoelectric conversion element groups by using a calculating circuit: ##EQU1## where: n is the number of photoelectric conversion elements forming each photoelectric conversion element group, m is the number in order of a photoelectric conversion element and, i.sub.1 through i.sub.n and i'.sub.1 through i'.sub.n are the outputs of photoelectric conversion elements which are proportional to the quantities of light applied thereto, respectively.
摘要翻译： 一种用于透镜系统的焦点检测装置，具有用于将物体的图像分成两个光学相等的图像并将物体的两个图像沿相反方向移动或仅移动对象的两个图像中的一个的子系统。 两个光电转换元件组适于将对象的两个图像的相对位置的变化转换为电信号。 光学系统将物体的图像投影到两个光电转换元件组上，其中通过使用计算电路从形成两个光电转换元件组的光电转换元件的输出获得以下输出：
Vout3 = Vout1-Vout2其中：n是形成每个光电转换元件组的光电转换元件的数量，m是光电转换元件的次数，i1至in和i'1至i'n是 分别与施加到其上的光量成比例的光电转换元件。 -
公开(公告)号：US4384770A
公开(公告)日：1983-05-24
申请号：US278030
申请日：1981-06-29
申请人： Seijiro Tokutomi , Ryota Ogawa , Michiro Ohishi , Kazuo Nakamura , Masao Jyojiki , Satoru Tachihara
发明人： Seijiro Tokutomi , Ryota Ogawa , Michiro Ohishi , Kazuo Nakamura , Masao Jyojiki , Satoru Tachihara
CPC分类号： G02B7/34
摘要： A focus detecting device having two concave mirrors for reforming the image of an object which is formed between a lens and the focal plane of lens, and for dividing said image two same secondary images. Two light receiving element arrays are provided in the image forming planes of the secondary images. A signal processing circuit subjects the outputs of the light receiving element arrays to produce a signal indicating whether or not the lens is focussed on the object. By means of the two concave mirrors adapted to form said secondary images, the two secondary images are shifted in the opposite directions on the light receiving element arrays at the time of defocussing so that the difference between the outputs of the two light receiving element arrays is not zero. At the time of proper focus the two secondary images are located at equivalent positions on said light receiving element arrays so that the difference between the outputs of the two light receiving element arrays is zero. A signal processing circuit produces a signal indicating the establishment of the proper focus.
摘要翻译： 一种焦点检测装置，具有两个凹面镜，用于对形成在透镜和透镜焦平面之间的物体的图像进行重构，并且用于将所述图像分成两个相同的二次图像。 在次级图像的图像形成平面中设置两个光接收元件阵列。 信号处理电路使受光元件阵列的输出端产生指示透镜是否聚焦在物体上的信号。 借助于适于形成所述二次图像的两个凹面镜，在聚焦时两个次要图像在光接收元件阵列上沿相反方向移位，使得两个光接收元件阵列的输出之间的差为 不为零。 在适当的对焦时，两个次要图像位于所述光接收元件阵列上的等同位置，使得两个光接收元件阵列的输出之间的差为零。 信号处理电路产生指示正确聚焦的建立的信号。
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公开(公告)号：US4258989A
公开(公告)日：1981-03-31
申请号：US33067
申请日：1979-04-25
申请人： Seijiro Tokutomi , Ryota Ogawa , Michiro Ohishi , Kazuo Nakamura , Masao Jyojiki , Satoru Tachihara
发明人： Seijiro Tokutomi , Ryota Ogawa , Michiro Ohishi , Kazuo Nakamura , Masao Jyojiki , Satoru Tachihara
CPC分类号： G02B7/34
摘要： A focus detecting device having a release lens for reforming the image of an object which is formed between a lens and the focal plane of the lens. A mirror is provided between the release lens and an image reforming plane for dividing the primary image into two secondary images. Two light receiving element arrays provided in the image forming planes of said secondary images provide outputs to a signal processing circuit for comparison to produce a signal indicating whether or not the lens is focussed on the object. The mirror for dividing the primary image into two secondary images, shifts the two secondary images in opposite directions on the light receiving element arrays at the time of defocussing so that the difference between the outputs of said two light receiving element arrays is not zero. At the time of focussing, the two secondary images are located at equivalent positions on the light receiving element arrays so that the difference between the outputs of said two light receiving element arrays is zero.
摘要翻译： 一种聚焦检测装置，其具有用于对形成在透镜和透镜的焦平面之间的物体的图像进行重整的释放镜头。 在释放镜头和用于将主图像分割成两个二次图像的图像重构平面之间设置镜子。 设置在所述二次图像的图像形成平面中的两个光接收元件阵列向信号处理电路提供输出以进行比较，以产生指示透镜是否聚焦在对象上的信号。 用于将主图像分割成两个次级图像的反射镜，在分焦时使光接收元件阵列上的两个次级图像在相反方向上移位，使得所述两个光接收元件阵列的输出之间的差不为零。 在聚焦时，两个次要图像位于光接收元件阵列上的等效位置，使得所述两个光接收元件阵列的输出之间的差为零。
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公开(公告)号：US4180309A
公开(公告)日：1979-12-25
申请号：US798718
申请日：1977-05-19
摘要： A pair of wedge prisms 11, 11' are disposed at an optical position equivalent to that of the film 10 in an SLR camera, and light from the object is directed thereon by a mirror 4 or the like. The prisms split the object image into two halves which are projected onto a two row array of thin photocells or the like, whereby the relative lateral displacement between the image halves as well as their level of contrast is a function of the degree of correct image focus. The latter is sensed by subtractively of differentially comparing the outputs of paired, laterally offset photocells in the two rows, such pairing being implemented in both directions. The output summation signal exhibits an easily detectable sharp peak when the object is properly focused, thereby enabling automatic focal point detection.
摘要翻译： 一对楔形棱镜11,11'设置在与SLR相机中的胶片10的光学位置相当的光学位置处，并且来自物体的光通过反射镜4等被引导到其上。 棱镜将物体图像分割成两半，其投影到两行薄的光电池等上，由此图像半部之间的相对横向位移以及它们的对比度水平是正确图像焦点的程度的函数 。 后者通过差分比较两行中配对的横向偏移光电管的输出而被感测，这样的配对在两个方向上被实现。 当对象被适当地聚焦时，输出求和信号表现出容易检测的尖峰，从而实现自动焦点检测。
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公开(公告)号：US4408853A
公开(公告)日：1983-10-11
申请号：US955440
申请日：1978-10-27
申请人： Seijiro Tokutomi , Kazuo Nakamura , Kasao Jyojiki
发明人： Seijiro Tokutomi , Kazuo Nakamura , Kasao Jyojiki
摘要： A focus detecting device comprising split prisms between an optical lens and an object image formed on the focal plane of the lens. The image is divided into two images and a plurality of light receiving elements or two arrays are disposed on the image forming surface. The outputs of the elements or arrays are processed to provide an electrical signal indicative of focus status.
摘要翻译： 一种聚焦检测装置，包括在透镜和形成在透镜的焦平面上的物体图像之间的分离棱镜。 图像被分成两个图像，并且多个光接收元件或两个阵列设置在图像形成表面上。 处理元件或阵列的输出以提供指示焦点状态的电信号。
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