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公开(公告)号：US4466711A
公开(公告)日：1984-08-21
申请号：US419419
申请日：1982-09-17
申请人： Hideo Yokota
发明人： Hideo Yokota
CPC分类号： G02B9/60
摘要： A Gauss type objective having, from front to rear, a 1st lens of positive power convex toward the front, a 2nd lens of positive power also convex toward the front, a 3rd lens of negative power strongly concave toward the rear, a 4th lens of negative power strongly concave toward the front, a 5th lens of positive power strongly convex toward the rear, and a 6th lens having at least one element of positive power, whereby the 4th, 5th and 6th lenses are made axially movable for focusing, and good correction of aberrations is achieved.
摘要翻译： 高斯型物镜从前到后具有朝向前方凸出的正功率的第一透镜，正功率的第二透镜也朝向前方凸出，负功率的第三透镜向后强烈凹入，第四透镜 负功率朝向前方强烈凹入，朝向后方强烈凸起的正功率的第五透镜，以及具有至少一个正功率元件的第六透镜，由此使第4,5和第6透镜可轴向移动以进行聚焦，并且良好 实现像差校正。
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公开(公告)号：US4457593A
公开(公告)日：1984-07-03
申请号：US235644
申请日：1981-02-18
申请人： Hideo Yokota
发明人： Hideo Yokota
IPC分类号： G02B5/00 , G02B3/00 , G02B5/22 , G02B9/00 , G02B9/34 , G02B9/60 , G02B13/00 , G02B27/00 , G02B27/18
摘要： The photographic lens system disclosed includes a front lens arrangement of positive refractive power with a plurality of components having lens surfaces followed by a diaphragm. A light control includes a number of light absorbing regions on the surface of a component other than the surface adjacent the diaphragm. According to an embodiment, the light control includes a larger optically coaxial region and smaller outer regions surrounding the optically coaxial region. According to another embodiment, a negative refraction lens is arranged behind the diaphragm.
摘要翻译： 所公开的摄影透镜系统包括正折射力的前透镜装置，多个部件具有透镜表面，随后是隔膜。 光控制包括在与隔膜相邻的表面以外的部件的表面上的许多光吸收区域。 根据实施例，光控制包括较大的光学同轴区域和围绕光学同轴区域的较小的外部区域。 根据另一实施例，负折射透镜布置在隔膜后面。
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公开(公告)号：US4265529A
公开(公告)日：1981-05-05
申请号：US016724
申请日：1979-03-02
申请人： Hideo Yokota
发明人： Hideo Yokota
CPC分类号： G03B19/12
摘要： In a single lens reflex camera a viewfinder contains an eye-piece facing the exit surface of a roof type pentagonal prism. The eye-piece includes, from the pentagonal prism end, a positive lens and a negative meniscus lens slightly spaced from the positive lens. A concave surface on the positive lens faces the pentagonal prism. The positive lens is composed of a plastic synthetic resin, letting R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote the radii of curvature of the lens surface of the eye-piece in that order from the pentagonal prism and f denote the composite focal length of the eye-piece, the following inequalities are satisfied: ##EQU1##
摘要翻译： 在单个镜头反光相机中，取景器包含面向屋顶型五棱镜的出射表面的眼镜。 眼镜片从五棱镜端部包括与正透镜稍微间隔开的正透镜和负弯月形透镜。 正透镜上的凹面面向五边形棱镜。 正透镜由塑料合成树脂构成，R1，R2，R3和R4分别表示来自五边形棱镜的顺序的眼镜透镜表面的曲率半径，f表示眼睛的复合焦距 符合以下不等式：
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公开(公告)号：US4257704A
公开(公告)日：1981-03-24
申请号：US035810
申请日：1979-05-04
申请人： Hideo Yokota , Hideo Tamamura
发明人： Hideo Yokota , Hideo Tamamura
CPC分类号： G03B13/20
摘要： A finder provided with a distance measuring device for measuring a distance to an object being photographed by projecting infrared light from a light emitting means through a projection optical system onto the object and by receiving the reflected light from the object through a light collecting optical system at photosensitive means. Positioned in a space between the projection optical system and the light collecting optical system is an objective lens of a mark finder. Light transmitted through said objective lens is directed through a half mirror to an eyepiece; a field framing plate and a reflection mirror are provided with respective openings at the center thereof and arranged so that either one of the light paths of the above described projection optical system and light collecting optical system passes through the openings, and light entering through the frame marks of the field framing plate is directed to the eyepiece after successive reflection from the reflection mirror and the half mirror.
摘要翻译： 一种测距装置，其具有距离测量装置，用于通过将来自发光装置的红外光通过投影光学系统投射到物体上并通过聚光光学系统接收来自物体的反射光，来测量与拍摄物体的距离 感光装置。 位于投影光学系统和聚光光学系统之间的空间中的是商标识别器的物镜。 透过所述物镜的光被引导通过半透视镜到目镜; 场框架板和反射镜在其中心设置有相应的开口，并且布置成使得上述投影光学系统和聚光光学系统的光路中的任一个通过开口，并且通过框架进入的光 在从反射镜和半反射镜连续反射之后，场框架板的标记被引导到目镜。
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公开(公告)号：US4257678A
公开(公告)日：1981-03-24
申请号：US941171
申请日：1978-09-11
申请人： Kikuo Momiyama , Hideo Yokota
发明人： Kikuo Momiyama , Hideo Yokota
CPC分类号： G02B13/04
摘要： An inverted-telephoto lens, particularly of a small size, is disclosed. A negative meniscus lens having a convex surface faces the object. This is followed by a positive lens consisting of a bi-convex lens cemented to a negative lens, a bi-concave lens, a positive meniscus lens having a convex surface directed toward the image and a positive lens having a highly convex lens facing the image. A diaphragm is located between the bi-convex lens and the bi-concave lens. To correct distortion and curvature of field, the negative meniscus lens is highly curved. The spherical aberration, the coma and the halo of the off-axial sagital rays subject to the above correction are corrected by means of the highly positive cemented surface of the positive biconvex cemented lens.
摘要翻译： 公开了特别是小尺寸的倒置长焦镜头。 具有凸面的负凹凸透镜面向物体。 其后是正透镜，由透镜固定的双凸透镜，双凹透镜，具有朝向图像的凸面的正弯月透镜和具有面向图像的高凸透镜的正透镜 。 隔膜位于双凸透镜和双凹透镜之间。 为了校正畸变和曲率的曲率，负弯月透镜高度弯曲。 经过上述校正的离轴矢状线的球面像差，彗形像和晕圈通过正双凸透镜胶合透镜的高度正粘结面进行校正。
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公开(公告)号：US4190338A
公开(公告)日：1980-02-26
申请号：US943355
申请日：1978-09-18
申请人： Youichi Okuno , Hideo Yokota , Mutsuhide Matsuda
发明人： Youichi Okuno , Hideo Yokota , Mutsuhide Matsuda
CPC分类号： G02B27/0018 , G03B17/245 , G03B2217/243
摘要： A data recording camera capable of recording a data image on film as well as observing the data image through the view finder is disclosed. A beam splitter directs the light beam coming from the data to the film and view finder. The inner surface reflector of the beam splitter forms a ghost beam which forms a ghost image of the data on the film. The ghost image of the data is removed by a polarization filter (polar screen), wedge prism or thick glass plate.
摘要翻译： 公开了一种能够通过胶卷记录数据图像并通过取景器观察数据图像的数据记录相机。 分束器将来自数据的光束引导到胶片和取景器。 分束器的内表面反射器形成重影束，其形成胶片上的数据的重影图像。 通过偏振滤光器（极性屏幕），楔形棱镜或厚玻璃板去除数据的重影。
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公开(公告)号：US4154517A
公开(公告)日：1979-05-15
申请号：US831121
申请日：1977-09-07
申请人： Shuichi Tamura , Kazuya Hosoe , Hideo Yokota
发明人： Shuichi Tamura , Kazuya Hosoe , Hideo Yokota
CPC分类号： G02B7/30
摘要： A camera is provided that has an automatic focus detector and a manually operable focus adjustment device, in which the focus adjustment device can be set at a predetermined position or range falling outside of an ordinary focus adjusting range. At the same time a coordinating device is provided which functions to secure an appropriate depth of field (or a hyper focal range) by coordinating the focus adjustment and the exposure aperture adjustment when the focus adjustment device is set at the predetermined position or range. Thus even in a case when the focus detector can not function effectively, practically satisfactory photographing can be done by the action of the coordinating device.In a preferred example of the present invention the focusing condition of a photo-taking lens system is automatically adjusted according to an exposure aperture value (i.e. f-stop value) by the action of the coordinating device in a condition in which the focus adjustment device is set at the predetermined position.In another preferred example of the present invention, the size of the exposure aperture is automatically limited to a predetermined aperture size or smaller according to the set position of the lens system by the action of the coordinating device in a condition in which the focus adjustable device is set at a predetermined position or range.
摘要翻译： 提供了一种具有自动聚焦检测器和可手动操作的聚焦调节装置的相机，其中可以将聚焦调节装置设置在普通焦点调节范围之外的预定位置或范围。 同时提供了一种协调装置，其用于通过在聚焦调节装置设置在预定位置或范围时协调焦点调节和曝光孔径调整来确保适当的景深（或超焦距范围）。 因此，即使在焦点检测器不能有效地工作的情况下，也可以通过协调装置的动作来实现令人满意的拍摄。
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公开(公告)号：US4104652A
公开(公告)日：1978-08-01
申请号：US776246
申请日：1977-03-10
申请人： Kazuya Hosoe , Hideo Yokota
发明人： Kazuya Hosoe , Hideo Yokota
摘要： A single lens reflex camera having a sharp focus detecting arrangement with one or more photoelectric cell or cells of an outer zone of a light beam entering through a photo-taking lens wholly or in parts and responsive to transition of light distribution change past the point of sharp focus for producing an electrical output signal. The signal is used to provide a display in the field of view of the camera finder, thereby the accuracy of detection of a condition of sharp focus can be improved regardless of the otherwise insufficient total amount of incident light, as the distinctness of the image, or the relative position of the projection paths in an outer zone of the field is changed by a larger amount than that in the central zone. This arrangement may be embodied in such a manner that a reflex mirror which, in its viewing position, deflects the light from the photo-taking lens to a focusing screen glass is made light-permeable to half or full transmittance either in an outer annular zone or in two parts relatively spaced far from each other in symmetry with respect to the optical axis of the lens, and operates with an auxiliary mirror positioned behind the reflex mirror to deflect the light beam or beams passing through the reflex mirror out of the optical axis to the photoelectric cell or cells.
摘要翻译： 具有锐利焦点检测装置的单个透镜反射相机，其具有一个或多个光电单元或光束的外部区域的单元，其全部或部分地通过摄影透镜进入，并且响应于光分布变化的转变超过 用于产生电输出信号的重点。 该信号用于在摄像机的视野中提供显示器，从而可以提高锐利焦点的状态的检测精度，而不管入射光的总量如何不足，作为图像的清晰度， 或者在场外的外部区域中的投影路径的相对位置比中央区域中的更大的量改变。 这种布置可以以这样一种方式来实现：使反射镜在其观察位置上将来自摄影镜头的光偏转到聚焦屏幕玻璃，使得在外部环形区域 或相对于透镜的光轴对称地彼此相对间隔开的两个部分，并且用位于反射镜后面的辅助镜操作，以将穿过反射镜的光束或光束偏离光轴 到光电池或电池。
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公开(公告)号：US4068929A
公开(公告)日：1978-01-17
申请号：US678364
申请日：1976-04-19
申请人： Hideo Yokota
发明人： Hideo Yokota
CPC分类号： G02B13/02
摘要： This invention is directed to a telephoto lens. The telephoto lens comprises a positive front lens group which remains stationary during focusing and a negative rear lens group having a stationary sub-group and at least one movable sub-group. The movable sub-group has a positive refracting power with its front surface being convex toward the object. The stationary sub-group has a negative refracting power with its rear surface being concave toward the image. The movable sub-group is moved on the optical axis toward an object so as to cause said telephoto lens to focus an object at near distance from its focusing on an object at far distance.
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公开(公告)号：US3953729A
公开(公告)日：1976-04-27
申请号：US516572
申请日：1974-10-21
申请人： Kazuya Hosoe , Hiroshi Aizawa , Seiichi Matsumoto , Hideo Yokota
发明人： Kazuya Hosoe , Hiroshi Aizawa , Seiichi Matsumoto , Hideo Yokota
CPC分类号： G02B7/34
摘要： This invention relates to a system for automatic focus adjustment of an optical system particularly adapted for use in a photographic camera which utilizes non-linear resistance versus illumination response characteristics which are prominent in photoconductive cells such as cadmium sulfide and cadmium selenide cells. In one embodiment, a pair of photoconductive cells, one of which has a photoconductive surface having elongated side portions which contact the electrodes along the length of the elongated side portions and another cell which has an elongated photoconductive surface and shortened end portions and which contact the electrodes only at the shortened end portions, are arranged so that portions of an image-forming light beam entering through an objective of the camera are directed to the photoconductive surfaces on which similar real images of an object are formed. The objective includes at least one lens member movable for focusing associated with an automatic focus control mechanism operative in response to variation of an electrical output signal of the photoconductive cell assembly produced when the degree of sharpness of the image on each of the photoconductive surfaces is varied as the focussing member is moved for focussing purposes with respect to the photoconductive cell assembly.
摘要翻译： 本发明涉及一种特别适用于照相机的光学系统的自动聚焦调整系统，其利用在诸如硫化镉和硒化镉细胞的光导电池中突出的非线性电阻对照明响应特性。 在一个实施例中，一对感光电池，其中一个光电导表面具有细长的侧面部分，沿着细长侧部分的长度接触电极，另一个电池具有细长的光电导表面和缩短的端部， 仅在缩短端部的电极被布置成使得通过相机的物镜进入的图像形成光束的部分被引导到其上形成有相似的真实图像的光导表面。 该目的包括至少一个透镜构件，其可移动用于聚焦，该自动聚焦控制机构响应于当每个光电导表面上的图像的清晰度变化而产生的光导电池组件的电输出信号的变化而可操作 因为聚焦构件相对于光导电池组件移动以用于聚焦目的。
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