公开(公告)号：US5109154A

公开(公告)日：1992-04-28

申请号：US690332

申请日：1991-04-26

申请人： Masaki Higashihara ,  Keiji Ohtaka ,  Kenji Suzuki ,  Takeshi Koyama ,  Yasuo Suda

发明人： Masaki Higashihara ,  Keiji Ohtaka ,  Kenji Suzuki ,  Takeshi Koyama ,  Yasuo Suda

IPC分类号： G03B13/36 ,  G02B7/34

CPC分类号： G02B7/346

摘要： A focusing detecting device is disclosed having apparatus for forming object light patterns whose relative position changes in conformity with a focus state of an objective lens. Light flux passes through different areas of an exit pupil of the objective lens, and circuitry receives and photoelectrically converts the light patterns, and detects the focus state of the objective lens on the basis of the photoelectrically converted signal. The focusing apparatus accroding to the present invention a plurality of sets of structures for forming light patterns and means for photoelectrically converting the light patterns which are provided at different distances from the position of the optic axis of the objective lens. Also disclosed are means for making (a) the shapes of the areas of the exit pupil through which the light flux is passed to form the light patterns, or (b) intervals between the centers of gravity of said areas, or (c) both, different between a position in the vicinity of the optic axis of the objective lens, and a position distant therefrom.

摘要翻译： 公开了一种聚焦检测装置，其具有用于形成相对位置根据物镜的焦点状态变化的物体光图案的装置。 光通量通过物镜的出射光瞳的不同区域，并且电路接收并光电转换光图案，并且基于光电转换信号检测物镜的聚焦状态。 根据本发明的聚焦装置用于形成光图案的多组结构和用于光电转换设置在与物镜的光轴的位置不同的距离处的光图案的装置。 还公开了用于制造（a）通过光束通过的出射光瞳的区域的形状以形成光图案的装置，或（b）所述区域的重心之间的间隔，或（c）两者 在物镜的光轴附近的位置和远离物镜的位置之间不同。

公开(公告)号：US5459551A

公开(公告)日：1995-10-17

申请号：US188109

申请日：1994-01-28

申请人： Kenji Suzuki ,  Takeshi Koyama ,  Keiji Ohtaka ,  Yasuo Suda

发明人： Kenji Suzuki ,  Takeshi Koyama ,  Keiji Ohtaka ,  Yasuo Suda

IPC分类号： G02B7/28 ,  G02B7/32 ,  G03B13/36

CPC分类号： G02B7/32

摘要： A device for projecting, by a light projection lens, a pattern chart image toward an object focus-detected by a focus detecting device comprises a chart having a predetermined pattern, and an illuminator for illuminating the chart non-uniformly.

摘要翻译： 用于通过光投射透镜将图案图像投射到由焦点检测装置检测到的对象聚焦的装置包括具有预定图案的图表和用于不均匀地照亮图表的照明器。

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：US5262819A

公开(公告)日：1993-11-16

申请号：US824873

申请日：1992-01-22

申请人： Keiji Ohtaka ,  Takeshi Koyama ,  Yasuo Suda

发明人： Keiji Ohtaka ,  Takeshi Koyama ,  Yasuo Suda

IPC分类号： G02B7/34 ,  G03B13/00

CPC分类号： G02B7/346

摘要： A compact focus detecting device featuring increased optical paths includes a first detecting system having first light intensity distribution forming structure for forming a light beam passing through the objective lens a light intensity distribution of which varies in relative position according to the focus state of the objective lens. A first light receiving sensor receives the first light intensity distribution and outputs a first signal indicative of the focused state of the objective lens. The first detecting system has a first detection field and a first optical path. A second detecting system has a second detecting field with a center spaced apart from the center of the first detection field, and a second optical path. The second detecting system includes second light intensity distribution forming structure for forming from the light beam passing through the objective lens a light intensity distribution which varies in relative position according to the focused state of the objective lens. A second light receiving sensor receives the second light intensity distribution and outputs a second signal indicative of the focus state of the objective lens. A light transmitting optical member is provided for adjusting the length of the first and second optical paths. Preferably, the optical member comprises a block having an internal reflecting surface.

摘要翻译： 具有增加的光路的小型聚焦检测装置包括具有第一光强分布形成结构的第一检测系统，用于形成通过物镜的光束，其光强分布根据物镜的聚焦状态在相对位置上变化 。 第一光接收传感器接收第一光强分布并输出表示物镜的聚焦状态的第一信号。 第一检测系统具有第一检测场和第一光路。 第二检测系统具有第二检测场，其具有与第一检测场的中心间隔开的中心和第二光路。 第二检测系统包括第二光强分布形成结构，用于从通过物镜的光束形成根据物镜的聚焦状态在相对位置上变化的光强度分布。 第二光接收传感器接收第二光强度分布并输出表示物镜聚焦状态的第二信号。 光传输光学构件被设置用于调节第一和第二光路的长度。 优选地，光学构件包括具有内部反射表面的块。

公开(公告)号：US4878078A

公开(公告)日：1989-10-31

申请号：US190171

申请日：1988-05-04

申请人： Takeshi Koyama ,  Keiji Ohtaka ,  Yasuo Suda

发明人： Takeshi Koyama ,  Keiji Ohtaka ,  Yasuo Suda

IPC分类号： G02B7/34

CPC分类号： G02B7/346

摘要： In a focus detecting device having a secondary image unit disposed rearwardly of the predetermined imaging plane of an objective lens, a plurality of pairs of object images based on light fluxes passing through different portions of the pupil of the objective lens are formed on a photoelectric conversion element array disposed rearwardly of the secondary imaging unit. The focus of the objective lens is detected from the amount of relative deviation between the object images formed on the photoelectric conversion element array. The secondary imaging unit includes at least two members, a first member having a first pair of lens-acting surfaces and a second pair of lens-acting surfaces on one end thereof, and a second member having a first pair of prism surfaces and a second pair of prism surfaces which differ in refractive power from each other. The second member being fixed to the first member after being rotatively adjusted relative to the first member.

摘要翻译： 在具有设置在物镜的预定成像平面的后方的二次图像单元的焦点检测装置中，基于通过物镜的光瞳的不同部分的光束的多对物体图像形成在光电转换 元件阵列设置在次级成像单元的后方。 从形成在光电转换元件阵列上的物体图像之间的相对偏离量来检测物镜的焦点。 二次成像单元包括至少两个构件，第一构件，其具有第一对透镜作用表面和在其一个端部上的第二对透镜作用表面，以及具有第一对棱镜表面的第二构件和第二构件 折射力彼此不同的一对棱镜表面。 所述第二构件在相对于所述第一构件旋转调整之后被固定到所述第一构件。

公开(公告)号：US4728785A

公开(公告)日：1988-03-01

申请号：US947824

申请日：1986-12-30

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

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

IPC分类号： G02B7/34 ,  G01J1/20

CPC分类号： G02B7/346

摘要： An adjusting screw for adjusting the inclination of a sensor unit body including sensing means for producing the information about the focus adjusted state on the basis of a light beam from an objective lens is moved with the sensor unit body perpendicularly to the optic axis of the objective lens, whereby adjustment of the optic axis of the objective lens is accomplished. At least two adjusting means are provided for inclining the sensing means itself at a predetermined angle with respect to the optic axis.

摘要翻译： 用于调节传感器单元主体的倾斜度的调节螺钉，其包括用于根据来自物镜的光束产生关于聚焦调节状态的信息的感测装置，传感器单元主体垂直于物镜的光轴移动 透镜，由此实现物镜的光轴的调节。 提供至少两个调节装置用于使感测装置本身相对于光轴以预定的角度倾斜。

公开(公告)号：US4959677A

公开(公告)日：1990-09-25

申请号：US373697

申请日：1989-06-30

申请人： Yasuo Suda ,  Kazuhiko Arakawa ,  Keiji Ohtaka ,  Takeshi Koyama ,  Ichiro Ohnuki

发明人： Yasuo Suda ,  Kazuhiko Arakawa ,  Keiji Ohtaka ,  Takeshi Koyama ,  Ichiro Ohnuki

IPC分类号： G02B7/34

CPC分类号： G02B7/346

摘要： In a focus detecting device has a plurality of optical systems each forming a pair of light distributions whose relative position varies in conformity with the focus adjusted state of an objective lens. The optical systems are disposed so that the direction in which the relative position of the light distributions is varied differs. Focus detecting sensors are provided for receiving the relative position of the light distributions, an the optical systems are constructed so that the optical spacing between the centers of gravity of the areas in which light beams passed through one of the optical systems differs from the optical spacing between the centers of gravity of the areas on another of the optical systems.

摘要翻译： 在焦点检测装置中具有多个光学系统，每个光学系统形成一对光分布，其相对位置根据物镜的焦点调整状态而变化。 光学系统被布置成使得光分布的相对位置的改变方向不同。 提供了用于接收光分布的相对位置的聚焦检测传感器，光学系统被构造成使得光束通过光学系统之一的区域的重心之间的光学间隔与光学间隔不同 在另一个光学系统上的区域的重心之间。

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。

公开(公告)号：US4792669A

公开(公告)日：1988-12-20

申请号：US947822

申请日：1986-12-30

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

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

IPC分类号： G02B7/34 ,  G01J1/20

CPC分类号： G02B7/346

摘要： A focus detecting device which is provided with a field lens disposed on the predetermined imaging plane of an objective lens and a plurality of imaging lenses disposed rearwardly of the field lens and in which the images of the imaging lenses are sensed to thereby determine the focus adjusted state of the objective lens. A unit body integrally constitutes the units such as the field lens and the imaging lenses and has a surface for movably supporting the field lens. The unit body also has adjusting device for rotating the imaging lenses relative to the optical axis.

摘要翻译： 一种焦点检测装置，其设置有设置在物镜的预定成像平面上的场透镜和设置在场透镜后方的多个成像透镜，其中检测成像透镜的图像，从而确定调焦的焦点 物镜状态。 单元体一体地构成诸如场透镜和成像透镜的单元，并且具有用于可移动地支撑场透镜的表面。 单元体还具有用于使成像透镜相对于光轴旋转的调节装置。