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1. 发明授权

US4682237A Photographic optical apparatus 失效
标题翻译：摄影光学仪器
公开(公告)号：US4682237A
公开(公告)日：1987-07-21
申请号：US729293
申请日：1985-05-01
申请人： Masatake Kato , Tetsuharu Nishimura , Hideo Yokota
发明人： Masatake Kato , Tetsuharu Nishimura , Hideo Yokota
IPC分类号： G03B19/12 , H04N5/225 , G02B13/16
CPC分类号： H04N5/2254 , G03B19/12
摘要： A photographic optical apparatus including a beam splitter for splitting the optical path of an objective lens, a video pickup device arranged in one of the split optical paths, an optical low pass filter and a color separation filter arranged between the beam splitter and the video pickup device, a prism for changing the direction of the optical path arranged on the other split optical path, an eyepiece arranged on the optical path of the light coming through the prism, a pre-assumed image plane lying between the beam splitter and the prism and an image correcting plate of equal optical thickness to the sum of the lengths of the optical paths of the optical low pass filter and the color separation filter. The plate is arranged between the pre-assumed image plane and the beam splitter. The image correcting plate also serves to split off part of the light and then to guide it to a sensor for light metering.
摘要翻译：一种摄影光学装置，包括用于分离物镜的光路的分束器，布置在分离光路之一中的视频拾取装置，光学低通滤波器和布置在分束器和视频拾取器之间的分色滤光器装置，用于改变布置在另一分割光路上的光路的方向的棱镜，布置在通过棱镜的光的光路上的目镜，位于分束器和棱镜之间的预先假定的图像平面，以及光学厚度相对于光学低通滤波器和分色滤光器的光路长度之和的图像校正板。板被布置在预先假定的图像平面和分束器之间。图像校正板还用于分离部分光，然后将其引导到用于测光的传感器。

2. 发明授权

US4677489A Image pickup apparatus 失效
标题翻译：摄像设备
公开(公告)号：US4677489A
公开(公告)日：1987-06-30
申请号：US774805
申请日：1985-09-11
申请人： Tetsuharu Nishimura , Hideo Yokota , Masatake Kato
发明人： Tetsuharu Nishimura , Hideo Yokota , Masatake Kato
IPC分类号： H04N5/235 , G03B7/099
CPC分类号： H04N5/2354
摘要： An image pickup apparatus including an electrical image sensor, means for detecting the reflection of a light beam incident on the image sensor, and control means for controlling the operation of the image sensor in accordance with the output of the detecting means so that the output signal of the image sensor has always a proper level.
摘要翻译：一种包括电图像传感器的图像拾取装置，用于检测入射在图像传感器上的光束的反射的装置，以及用于根据检测装置的输出控制图像传感器的操作的控制装置，使得输出信号的图像传感器始终处于适当的水平。

3. 发明授权

US4609272A Finder system of high image magnification 失效
标题翻译： Finder系统的高图像放大倍数
公开(公告)号：US4609272A
公开(公告)日：1986-09-02
申请号：US750685
申请日：1985-06-28
申请人： Hideo Yokota , Masatake Kato , Tetsuharu Nishimura
发明人： Hideo Yokota , Masatake Kato , Tetsuharu Nishimura
IPC分类号： G02B5/04 , G03B19/12 , G03B13/02
CPC分类号： G03B19/12 , G02B5/04
摘要： The disclosed finder system is constructed with three prisms. The first prism has a first entrance face, a first reflection face and a first exit face. The second prism has a second entrance face in contact with the first exit face, a second reflection face, and a second exit face. The third prism has a third entrance face in contact with the second exit face, a pair of roof-type reflection faces, a third reflection face in a common plane with the third entrance face, and a third exit face. Light entering through a photographic objective lens reflects from a quick return mirror to a focusing screen on which an image of an object forms. Light from the image reflects from the first reflection face to a direction parallel with an optical axis of the lens. The second reflection face then reflects the light progressively farther away from the optical axis to the pair of roof faces. The light then reflects progressively nearer the optical axis to the third reflection face, and then therefrom to an eyepiece for observing the finder image.
摘要翻译：所公开的取景器系统由三个棱镜构成。第一棱镜具有第一入射面，第一反射面和第一出射面。第二棱镜具有与第一出射面接触的第二入射面，第二反射面和第二出射面。第三棱镜具有与第二出射面接触的第三入射面，一对屋顶型反射面，与第三入射面在共同平面中的第三反射面和第三出射面。通过摄影物镜进入的光从快速返回镜反射到形成对象的图像的聚焦屏幕。来自图像的光从第一反射面反射到与透镜的光轴平行的方向。第二反射面然后将光逐渐远离光轴反射到一对屋顶面。然后，光逐渐靠近第三反射面的光轴，然后从那里反射到用于观察取景器图像的目镜。

4. 发明授权

US4592636A View finder optical system 失效
标题翻译：取景器光学系统
公开(公告)号：US4592636A
公开(公告)日：1986-06-03
申请号：US729292
申请日：1985-05-01
申请人： Masatake Kato , Tetsuharu Nishimura , Hideo Yokota
发明人： Masatake Kato , Tetsuharu Nishimura , Hideo Yokota
IPC分类号： G02B5/04 , G03B19/12 , G03B13/02
CPC分类号： G02B5/04 , G03B19/12
摘要： A view finder optical system comprises an optical path split mirror which divides a second optical axis from a first optical axis of an objective optical system; a predetermined image forming plane arranged on the second optical axis to have an image coming from the objective optical system formed thereon; a first prism arranged along the second optical axis to bring about reflection twice on the second optical axis and to have the incidence plane thereof and a second reflection plane on the same plane; a second prism which is disposed behind the first prism and is provided with a roof type reflection plane for a first reflection and a reflection plane for further reflecting the second optical axis after the second optical axis is reflected by the roof type reflection plane; and an eye-piece on the second optical axis after it comes out from the second prism. The spacing distance between the first optical axis and the optical axis passing through the eye-piece is shorter than a distance between the first optical axis and the predetermined image forming plane. An optical axis which passes through the exit plane of the first prism is arranged to be tilting to an axis which is perpendicular to the exit plane of the first prism.
摘要翻译：取景器光学系统包括将第二光轴与物镜光学系统的第一光轴分开的光路分离镜; 布置在所述第二光轴上以具有形成在其上的物镜光学系统的图像的预定图像形成平面; 沿所述第二光轴布置的第一棱镜，以在所述第二光轴上产生两次反射并具有其入射面和在同一平面上的第二反射面; 第二棱镜，其设置在第一棱镜后面，并且在第二光轴被屋顶型反射面反射之后，设置有用于第一反射的屋顶型反射面和用于进一步反射第二光轴的反射面; 以及在从第二棱镜出来之后的第二光轴上的眼睛片。第一光轴与通过眼睛片的光轴之间的距离比第一光轴和预定图像形成面之间的距离短。穿过第一棱镜的出射平面的光轴布置成垂直于第一棱镜的出射平面的轴倾斜。

5. 发明授权

US4912500A Single lens reflex camera 失效
标题翻译：单镜头反光相机
公开(公告)号：US4912500A
公开(公告)日：1990-03-27
申请号：US296877
申请日：1989-01-12
申请人： Hideo Yokota , Masatake Kato , Akihiko Shiraishi , Makoto Sekita
发明人： Hideo Yokota , Masatake Kato , Akihiko Shiraishi , Makoto Sekita
IPC分类号： G03B7/099 , G03B19/12
CPC分类号： G03B19/12 , G03B7/09972
摘要： For a single lens reflex camera in which an image bearing beam from the photographic objective is reflected by a movable mirror to the finder system, techniques are disclosed that the mirror is made half-reflective, and the transmitted light of the mirror is conducted by a supplementary optical member consisting of, at least, a prism fixedly secured (not movable relative) to the mirror toward an image sensor such as that of a focus detector positioned outside the optical axes of the objective and finder, that the movable mirror is made to take a quite different direction of movement from that to which the reflected beam from the mirror goes, and that as an image pickup device such as CCD is arranged on the optical axis of the objective and behind the movable mirror, the optical characteristics of optical members such as a filter positioned in front of the image pickup device are made equivalent to those of the supplementary optical member.
摘要翻译：对于单镜头反光照相机，其中来自照相物镜的图像轴承光束被可移动镜反射到取景器系统，公开了镜子制成半反射的技术，并且镜子的透射光通过补充光学构件，至少由与位于物镜和取景器的光轴外侧的聚焦检测器的图像传感器固定地固定（不可相对移动）的棱镜，使可动镜被制成与来自反射镜的反射光束相反的移动方向相当不同，并且作为诸如CCD的图像拾取装置被布置在物镜的光轴上并在可移动反射镜的后面，光学部件的光学特性例如位于图像拾取装置前面的过滤器被制成与辅助光学部件相同的过滤器。

6. 发明授权

US4969723A Parallax adjusting mechanism for a finder device 失效
标题翻译：取景器设备的视差调节机构
公开(公告)号：US4969723A
公开(公告)日：1990-11-13
申请号：US281787
申请日：1988-12-09
申请人： Masatake Kato , Makoto Sekita , Kenichi Kawamoto
发明人： Masatake Kato , Makoto Sekita , Kenichi Kawamoto
IPC分类号： G03B13/14
CPC分类号： G03B13/14
摘要： In an external-measured real image type finder optical system having a prism for a non-reverse erecting image interposed in between an objective lens system and an eyepiece lens system, parallax correction is accomplished by adjusting the position of at least a part of the objective lens system within a plane perpendicular to the optical axis of the finder optical system.
摘要翻译：在具有插入在物镜系统和目镜透镜系统之间的非反向竖立图像的棱镜的外部测量的实像取景器光学系统中，通过调整至少一部分物镜的位置来实现视差校正透镜系统在垂直于取景器光学系统的光轴的平面内。

7. 发明授权

US4964686A Finder optical device 失效
标题翻译： Finder光学设备
公开(公告)号：US4964686A
公开(公告)日：1990-10-23
申请号：US280584
申请日：1988-12-06
申请人： Masatake Kato
发明人： Masatake Kato
IPC分类号： G02B9/60 , G02B13/00 , G02B23/14
CPC分类号： G02B23/14 , G02B13/0095 , G02B9/60
摘要： A secondary image forming type finder opitcal device having an objective lens solely used therefor, comprising, from front to rear, an objective lens unit including at least one positive lens, a relay lens unit formed by arranging a lens of positive refractive power and a lens of negative refractive power in spaced relation, a field lens unit consisting of a positive lens whose front surface is of strong curvature, and an eyepiece lens unit consisting of two positive lenses whose confronting surfaces are of strong curvature, satisfying the following conditions: ##EQU1## where f.sub.P is the focal length of the lens of positive refractive power of the relay lens unit, .nu..sub.P is the Abbe number of its material, R.sub.P is the radius of curvature of a lens surface of the lens of positive refractive power of the relay lens unit which is of strong curvature and faces the lens of negative refractive power of the relays lens unit, f.sub.N is the focal length of the lens of negative refractive power of the relay lens unit, .nu..sub.N is the Abbe number of its material, and R.sub.N is the radius of curvature of a lens surfaces of the lens of negative refractive power of the relay lens unit which is of strong curvature and faces the lens of positive refractive power of the relay lens unit.
摘要翻译：一种具有仅用于其的物镜的次级成像型取景器操作装置，包括从前到后的包括至少一个正透镜的物镜单元，通过布置正屈光力透镜和透镜形成的中继透镜单元具有间隔关系的负屈光力，由前表面具有强曲率的正透镜构成的场透镜单元和由相对表面具有强曲率的两个正透镜组成的目镜透镜单元，满足以下条件：其中fP是中继透镜单元的正屈光力透镜的焦距，nu P是其材料的阿贝数，RP是继电器的正屈光力透镜的透镜表面的曲率半径具有强曲率并且与继电器透镜单元的负屈光力透镜相对的透镜单元，fN是相对光焦度的负屈光力透镜的焦距 y透镜单元，nu N是其材料的阿贝数，RN是中继透镜单元的负折射力透镜的透镜表面的曲率半径，其具有强曲率并且面向正屈光力透镜的中继透镜单元。

8. 发明授权

US4466710A Large relative aperture objective lens 失效
标题翻译：大相对孔径物镜
公开(公告)号：US4466710A
公开(公告)日：1984-08-21
申请号：US274312
申请日：1981-06-16
申请人： Masatake Kato , Shigeru Hashimoto
发明人： Masatake Kato , Shigeru Hashimoto
IPC分类号： G02B9/34 , G02B9/62 , G02B13/20
CPC分类号： G02B9/62 , G02B13/20
摘要： An objective lens of large relative aperture includes three lens components of positive power arranged to be focused by moving the first and third components in unison forwardly, along with forward movement of the second component by a smaller amount than the movement of the first and third components when focusing down to shorter object distances. Accordingly, aberrations are well corrected throughout an extended range of image magnification.
摘要翻译：大相对孔径的物镜包括正向功率的三个透镜部件，其被布置为通过向前一致地移动第一和第三部件而被聚焦，以及第二部件的向前移动比第一和第三部件的移动更小的量当聚焦到较短的物体距离时。因此，像差在整个图像放大范围的扩展范围内被很好地校正。

9. 发明授权

US4855814A Video camera body and detachable lens each containing a memory for storing signals indicative of spectral characteristics 失效
标题翻译：每个摄像机体和可拆卸透镜都包含用于存储指示光谱特性的信号的存储器
公开(公告)号：US4855814A
公开(公告)日：1989-08-08
申请号：US212050
申请日：1988-06-24
申请人： Akihiko Shiraishi , Masatake Kato , Kenichi Kawamoto
发明人： Akihiko Shiraishi , Masatake Kato , Kenichi Kawamoto
IPC分类号： H04N5/232 , H04N9/73
CPC分类号： H04N9/735 , H04N5/23209
摘要： An image pickup system includes a camera body having an image conversion device and a signal processor and a detachable lens including a memory and circuitry for transmitting the memory contents to the camera body signal processor. In one embodiment, the system provides for storage in the lens memory of the spectral characteristics of both the lens and the image conversion device. In a second embodiment, the system provides for storage of spectral characteristic data concerning a plurality of different lenses in memory in the camera body, with the lenses adapted for self-identification. In a third embodiment, camera body memory stores a single lens spectral characteristic for use in common with any one of plural lenses and representative of all such lenses.
摘要翻译：图像拾取系统包括具有图像转换装置和信号处理器的相机主体，以及包括用于将存储器内容发送到相机机身信号处理器的存储器和电路的可拆卸透镜。在一个实施例中，该系统在透镜存储器中提供透镜和图像转换装置的光谱特性的存储。在第二实施例中，该系统提供了关于相机机身中的存储器中的多个不同透镜的光谱特征数据的存储，其中镜片适合于自我识别。在第三实施例中，相机身体存储器存储与多个透镜中的任何一个共同使用的信号透镜光谱特性，并且代表所有这样的透镜。

10. 发明授权

US4854681A Compact zoom lens 失效
标题翻译：紧凑型变焦镜头
公开(公告)号：US4854681A
公开(公告)日：1989-08-08
申请号：US931537
申请日：1986-11-14
申请人： Masatake Kato , Sadahiko Tsuji , Muneharu Sugiura , Kazuo Tanaka
发明人： Masatake Kato , Sadahiko Tsuji , Muneharu Sugiura , Kazuo Tanaka
IPC分类号： G02B15/173
CPC分类号： G02B15/173
摘要： A compact zoom lens comprising, from front to rear, a first lens unit of positive power for focusing, a second lens unit of negative power axially movable in one direction when zooming from one end of a range of image magnification to the other, a third lens unit of positive power axially movable in a path convex toward the rear to maintain the constant position of an image surface which shifts with zooming, and a fourth lens unit of positive power for forming an image which remains stationary during zooming, wherein a fixed diaphragm is arranged in a space between the second and third lens units.
摘要翻译：一种紧凑型变焦透镜，包括从前到后具有用于聚焦的正光焦度的第一透镜单元，当从一定范围的图像放大倍数的一端变焦到另一方向时可以沿一个方向轴向移动的负光焦度的第二透镜单元，具有正向功率的透镜单元，其在朝向后方凸出的路径中可轴向移动，以保持图像表面随着变焦而移动的恒定位置，以及用于形成在变焦期间保持静止的图像的正电力的第四透镜单元，其中，布置在第二和第三透镜单元之间的空间中。

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