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1. 发明授权

US4653874A Zoom lens 失效
标题翻译：变焦镜头
公开(公告)号：US4653874A
公开(公告)日：1987-03-31
申请号：US879825
申请日：1986-06-26
申请人： Sadatoshi Takahashi , Toshiaki Asano , Sadahiko Tsuji , Kazuo Fujibayashi , Masatake Kato
发明人： Sadatoshi Takahashi , Toshiaki Asano , Sadahiko Tsuji , Kazuo Fujibayashi , Masatake Kato
IPC分类号： G02B13/18 , G02B15/173 , G02B15/20 , G02B15/16
CPC分类号： G02B15/173
摘要： A zoom lens having at least three components, or, from front to rear, a first component of positive power, a second component of negative power and a third component with the air separations between the successive two of said three components being varied to effect zooming, whereby said first component is constructed with, from front to rear, a bi-convex first lens, a second lens of negative power and a third lens of positive power.
摘要翻译：具有至少三个分量的变焦透镜，或从前到后具有正功率的第一分量，负功率的第二分量和具有所述三个分量中的连续两个之间的空气分离的第三分量变化以实现变焦由此所述第一部件从前到后构造为双凸第一透镜，负功率的第二透镜和正光焦度的第三透镜。

2. 发明授权

US4687303A Zoom lens system 失效
标题翻译：变焦镜头系统
公开(公告)号：US4687303A
公开(公告)日：1987-08-18
申请号：US628447
申请日：1984-07-06
申请人： Sadatoshi Takahashi , Masatake Kato , Sadahiko Tsuji
发明人： Sadatoshi Takahashi , Masatake Kato , Sadahiko Tsuji
IPC分类号： G02B15/20 , G02B15/177 , G02B15/16
CPC分类号： G02B15/177
摘要： A zoom lens system having, from front to rear, a positive first component, a negative second component, a positive third component and a fourth component, in which to effect zooming, the first, second and third components are moved axially in A relation such that the movements of the first and second components are non-linear with respect to that of the third component, and that when in the telephoto end, the first and third components lie more toward the front and the second component lies more toward the rear than when in the wide angle end. By specifying the relation in which the first, second and third components move as zooming nears the wide angle end, a valuable decrease in the diameter of the front lens members is achieved to provide a compact zoom lens system.
摘要翻译：一种变焦透镜系统，其从前到后具有正的第一分量，负的第二分量，正的第三分量和第四分量，其中，为了进行变焦，第一，第二和第三分量以如下关系如下第一和第二部件的运动相对于第三部件的运动是非线性的，并且当在长焦端时，第一和第三部件更靠近前部，而第二部件更靠近后部，当在广角端。通过指定第一，第二和第三分量随着广角端附近的变焦而移动的关系，实现了前透镜构件的直径的有价值的降低以提供紧凑的变焦透镜系统。

3. 发明授权

US4712883A Rear focus zoom lens 失效
标题翻译：后焦距变焦镜头
公开(公告)号：US4712883A
公开(公告)日：1987-12-15
申请号：US571481
申请日：1984-01-17
申请人： Masatake Kato , Sadahiko Tsuji , Toshiaki Asano
发明人： Masatake Kato , Sadahiko Tsuji , Toshiaki Asano
IPC分类号： G02B15/20 , G02B15/173 , G02B15/22 , G02B15/14 , G02B13/18
CPC分类号： G02B15/173
摘要： The disclosed zoom lens includes, from front to rear, a magnification-power variable lens assembly which serves for zooming and an image forming lens assembly which is stationary during zooming. The image forming assembly has a lens component B of negative refractive power which is preceded by at least one lens component A movable for focusing and which is followed by at least one lens component C movable for focusing. This structure makes achievement of a compact form and good stability in aberration correction possible throughout the entire focusing range.
摘要翻译：所公开的变焦镜头包括从前到后的用于变焦的放大倍率可变透镜组件和在变焦期间静止的成像透镜组件。图像形成组件具有负折射力的透镜部件B，其前面具有可移动用于聚焦的至少一个透镜部件A，并且后面是可移动以进行聚焦的至少一个透镜部件C. 这种结构使得在整个聚焦范围内实现了像差校正的紧凑形式和良好的稳定性。

4. 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。

5. 发明授权

US4763998A Compact zoom lens 失效
标题翻译：紧凑型变焦镜头
公开(公告)号：US4763998A
公开(公告)日：1988-08-16
申请号：US877101
申请日：1986-06-23
申请人： Sadahiko Tsuji , Muneharu Sugiura , Kazuo Tanaka , Masatake Kato
发明人： Sadahiko Tsuji , Muneharu Sugiura , Kazuo Tanaka , Masatake Kato
IPC分类号： G02B15/173 , G02B15/14 , G02B9/64
CPC分类号： G02B15/173
摘要： A zoom lens comprising a first lens unit of positive refractive power for focusing, a second unit of negative refractive power movable for zooming in a mono-direction throughout, a third unit of positive refractive power movable for zooming in the opposite mono-direction to that of movement of the second unit, and a fourth unit of positive refractive power having an image forming function which is held stationary during zooming, with a diaphragm being arranged in between the second and third units to be stationary.
摘要翻译：一种变焦透镜，包括用于聚焦的正折光力的第一透镜单元，可折叠单向放大的可折叠的第二单位的负折射光焦度的第三单位的正折光力，可以将相对的单向放大到与之相反的单向第二单元的运动以及具有在变焦期间保持静止的图像形成功能的正屈光力的第四单元，其中隔膜布置在待固定的第二和第三单元之间。

6. 发明授权

US4998801A Optical low-pass filter and photographic system using the same 失效
标题翻译：光学低通滤光片和使用相同的摄影系统
公开(公告)号：US4998801A
公开(公告)日：1991-03-12
申请号：US379221
申请日：1989-07-13
申请人： Akihiko Shiraishi , Kazuo Fujibayashi , Masatake Kato
发明人： Akihiko Shiraishi , Kazuo Fujibayashi , Masatake Kato
IPC分类号： G02B27/46 , H04N5/238
CPC分类号： G02B27/46
摘要： An optical low-pass filter formed in a trapezoid wave profile having the top and bottom sides of lengths "a" and "b" respectively, a height ".delta." thereof and a length of one period thereof and made from a material having a refractive index "n", and satisfying the following conditions: for a wavelength of .lambda..sub.M .gtoreq.1.6 .lambda.m, ##EQU1## wherein .lambda..sub.M and .lambda.m are respectively maximum and minimum wavelengths in a wavelength range in which the filter works, and MIN(x,y) represents the smaller one of values which variables x and y take.
摘要翻译：一种光学低通滤波器，其形成为梯形波形，其分别具有长度“a”和“b”的顶侧和底侧，其高度“delta”和其一个周期的长度，并由具有折射率的材料制成指数“n”，并且满足以下条件：对于波长λM> / =1.6λm， 0.35 其中λM和λm分别是滤波器工作的波长范围内的最大和最小波长，并且MIN（x，y）表示变量x和y取值的较小值。

7. 发明授权

US4910545A Finder optical system 失效
标题翻译： Finder光学系统
公开(公告)号：US4910545A
公开(公告)日：1990-03-20
申请号：US241884
申请日：1988-09-08
申请人： Kazuo Fujibayashi , Makoto Sekita , Masaharu Suzuki , Masatake Kato
发明人： Kazuo Fujibayashi , Makoto Sekita , Masaharu Suzuki , Masatake Kato
IPC分类号： G02B17/02 , G02B17/08
CPC分类号： G02B17/026
摘要： A single reflex type electronic camera includes an imaging lens unit and five reflecting units beyond an image formed by an objective, and a finder optical system wherein an image can be observed with a high finder magnification and at a position easy to observe similar to that found in a single reflex camera using silver salt films.
摘要翻译：单反射型电子照相机包括成像透镜单元和超过由物镜形成的图像的五个反射单元，以及取景器光学系统，其中可以以高取景器倍率观察图像并且在易于观察的位置处观察到与找到的相似的位置在使用银盐膜的单反相机中。

8. 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。

9. 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。

10. 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。

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