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41. 发明申请

US20070159639A1 Light source apparatus and optical tomography imaging apparatus 有权
标题翻译：光源装置和光学层析成像装置
公开(公告)号：US20070159639A1
公开(公告)日：2007-07-12
申请号：US11651959
申请日：2007-01-11
申请人： Yuichi Teramura , Kiichi Kato
发明人： Yuichi Teramura , Kiichi Kato
IPC分类号： A61B5/05 , G01B9/02
CPC分类号： G01B9/02091 , G01B9/02044 , G01B2290/70
摘要： A light source apparatus is equipped with at least three light sources each having a predetermined wavelength interval and different central wavelengths. At least one multiplexing means having wavelength selectivity, for multiplexing light emitted from each of a first group and a second group of the light sources is provided, the first group of light sources including odd ordered light sources and the second group of light sources including even ordered light sources when counted in order of lengths of the central wavelengths thereof. Multiplexing means not having wavelength selectivity, for multiplexing light emitted from the first group of light sources and the second group of light sources is also provided.
摘要翻译：光源装置配备有至少三个光源，每个光源具有预定的波长间隔和不同的中心波长。至少一个具有波长选择性的多路复用装置被提供用于复用从第一组和第二组光源中发射的光，第一组光源包括奇数有序光源和第二组光源，包括均匀当按照其中心波长的长度的顺序计数有序的光源。复用意味着不具有波长选择性，用于复用从第一组光源发射的光和第二组光源。

42. 发明授权

US5249171A Opto-magnetic pick-up device including phase difference correcting means 失效
标题翻译：包括相位差校正装置的光磁拾取装置
公开(公告)号：US5249171A
公开(公告)日：1993-09-28
申请号：US697910
申请日：1991-05-01
申请人： Nobuhide Matsubayashi , Tsuneo Yanagida , Kiichi Kato
发明人： Nobuhide Matsubayashi , Tsuneo Yanagida , Kiichi Kato
IPC分类号： G11B7/135 , G11B11/105
CPC分类号： G11B7/1362 , G11B11/10543
摘要： An opto-magnetic pick-up device for use in an information recording and reproducing device is disclosed. The device comprises a phase difference correcting device capable of correcting the phase difference between the linearly polarized component of the reflected light from the recording medium and a polarized component vertical to the linearly polarized component.
摘要翻译：公开了一种用于信息记录和再现装置的光磁拾取装置。该装置包括能够校正来自记录介质的反射光的线偏振分量与垂直于线偏振分量的偏振分量之间的相位差的相位差校正装置。

43. 发明授权

US5055353A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5055353A
公开(公告)日：1991-10-08
申请号：US523410
申请日：1990-05-15
申请人： Ryoichi Yamamoto , Shizuo Umemura , Kiichi Kato , Takashi Yamada
发明人： Ryoichi Yamamoto , Shizuo Umemura , Kiichi Kato , Takashi Yamada
IPC分类号： G11B11/105
CPC分类号： G11B11/10582 , Y10S428/90 , Y10S428/928 , Y10T428/265 , Y10T428/31678
摘要： A magneto-optical recording medium comprises a substrate and a magneto-optical recording film overlaid on the substrate. The magneto-optical recording film is composed of a first protective dielectric layer, a recording layer, a second protective dielectric layer, and a reflection metal layer, which layers are overlaid in this order on the substrate. The thickness of the first protective dielectric layer falls within the range of 950 .ANG. to 1,300 .ANG.. The thickness of the recording layer falls within the range of 200 .ANG. to 400 .ANG.. The thickness of the second protective dielectric layer falls within the range of 100 .ANG. to 600 .ANG.. The thickness of the reflection metal layer falls within the range of 200 .ANG. to 800 .ANG..
摘要翻译：磁光记录介质包括衬底和覆盖在衬底上的磁光记录膜。磁光记录膜由第一保护电介质层，记录层，第二保护电介质层和反射金属层构成，该层在基板上依次重叠。第一保护介电层的厚度在950至1300的范围内。记录层的厚度在200安培到400安培的范围内。第二保护介电层的厚度在100埃至600埃的范围内。反射金属层的厚度在200安培到800安培的范围内。

44. 发明授权

US4545651A Optical system for synthesizing plural light beams 失效
标题翻译：用于合成多个光束的光学系统
公开(公告)号：US4545651A
公开(公告)日：1985-10-08
申请号：US454869
申请日：1982-12-30
申请人： Kiichi Kato , Masaharu Sakamoto
发明人： Kiichi Kato , Masaharu Sakamoto
IPC分类号： G02B27/10 , G02B27/28 , G11B7/08 , G11B7/12 , G11B7/135 , G11B7/1359 , G11B7/1392 , G11B7/1398 , G02B5/30
CPC分类号： G11B7/1398 , G02B27/1006 , G02B27/14 , G02B27/144 , G02B27/28 , G11B7/08 , G11B7/1359 , G11B7/13922
摘要： In an optical system for synthesizing a plurality of light beams, a first light beam of parallel light rays emitted from a laser beam source is incident on an inclined face of a right angle prism through the prism. A second light beam of parallel light rays emitted from a laser beam source is incident to the inclined face at a predetermined angle of incidence. The first light beam is emitted to the inclined face at an angle of incidence equal to a critical angle so that the first light beam is totally inflected by the inclined face and transmitted in a predetermined direction. The second light beam is refracted at an angle of refraction substantially equal to the Brewster's angle, and then transmitted in a direction which defines a predetermined angular difference with the predetermined direction of the first light beam. A multi-layered film is formed on the inclined face. The film makes the angle of refraction of the second light beam approach the critical angle, so as to reduce the angular difference from that which would exist in the absence of the film.
摘要翻译：在用于合成多个光束的光学系统中，从激光束源发射的平行光线的第一光束通过棱镜入射到直角棱镜的倾斜面上。从激光束发射的平行光线的第二光束以预定的入射角入射到倾斜面。第一光束以等于临界角的入射角发射到倾斜面，使得第一光束被倾斜面完全折射并沿预定方向透射。第二光束以基本上等于布鲁斯特角的折射角折射，然后沿与第一光束的预定方向限定预定角度差的方向透射。在倾斜面上形成多层膜。该胶片使第二光束的折射角接近临界角，从而减小与不存在胶片时所存在的角度差。

45. 发明授权

US4509830A Light beam separation method 失效
标题翻译：光束分离法
公开(公告)号：US4509830A
公开(公告)日：1985-04-09
申请号：US345154
申请日：1982-02-02
申请人： Kiichi Kato , Tohru Musha , Kenichi Ito
发明人： Kiichi Kato , Tohru Musha , Kenichi Ito
IPC分类号： G02B27/10 , G11B7/135
CPC分类号： G02B27/126
摘要： A method of separating at least two light beams propagating in the substantially same direction but which propagate with making a small angle therebetween is disclosed, which comprises making one of said light beams incident upon an interface between an isotropic first optical medium having a first refractive index and an isotropic second optical medium having a second refractive index lower than said first refractive index at an incident angle substantially equal to the Brewster angle so that the light beam is substantially totally transmitted through said interface; and making the other light beam incident upon said interface at an incident angle greater than the critical angle so that the light beam is totally reflected by said interface.
摘要翻译：公开了一种分离至少两个沿基本上相同的方向传播但以小角度传播的光束的方法，其包括使所述光束之一入射到具有第一折射率的各向同性的第一光学介质之间的界面上以及具有低于所述第一折射率的第二折射率的各向同性的第二光学介质，其入射角基本上等于布鲁斯特角，使得光束基本上完全透过所述界面; 并使另一光束以大于临界角的入射角入射在所述界面上，使得光束被所述界面全反射。

46. 发明授权

US4507763A Optical information recording and/or reproducing apparatus and optical record medium for use in such apparatus 失效
标题翻译：用于这种装置的光信息记录和/或再现装置和光记录介质
公开(公告)号：US4507763A
公开(公告)日：1985-03-26
申请号：US343479
申请日：1982-01-28
申请人： Kiichi Kato
发明人： Kiichi Kato
IPC分类号： G11B7/24 , G11B7/013 , G11B7/09 , G11B7/095 , G11B20/10 , G11B27/10 , G11B27/32 , H04N5/76 , H04N7/00
CPC分类号： G11B7/24085 , G11B20/10 , G11B27/105 , G11B27/322 , G11B7/09 , G11B7/0956
摘要： A disc-shaped record medium has a recording surface which is divided into a number of concentric recording regions and has a number of concentric guide tracks formed at boundaries between successive recording regions. A number of concentric or spiral information tracks are formed in an optically readable form in respective recording regions with a constant pitch in reference to respective guide tracks and the guide tracks are also recorded in an optically readable form. In an instance of effecting the recording or reproducing for a certain recording region, the guide track related to the relevant recording region is always read out by a tracking light beam which is controlled to trace the guide track and a recording or reproducing light beam is controlled with reference to the guide track so as to trace the information track precisely. The tracking light beam and the recording or reproducing light beam are focussed by a common objective lens onto the record medium and an inclination angle of the recording or reproducing light beam with respect to the tracking light beam is changed in a stepwise or continuous manner by rotating a swingable mirror arranged in the path of the recording or reproducing light beam. The recording or reproducing light beam is shifted in a radial direction of the record medium disc to trace the concentric or spiral information tracks. In the guide tracks are formed additional signals, such as address signals and synchronizing signals which are used for effecting random access.
摘要翻译：盘形记录介质具有记录表面，该记录表面被分成多个同心记录区域，并且在连续的记录区域之间的边界处形成有多个同心导轨。多个同心或螺旋信息轨迹以各种记录区域中的光学可读形式形成，其相对于相应的导轨具有恒定的间距，导轨也以光学可读形式记录。在对某个记录区域进行记录或再现的情况下，与相关记录区域相关的导轨总是被跟踪光束读出，跟踪光束被控制以跟踪导轨并且记录或再现光束被控制参考导轨，以便精确跟踪信息轨道。跟踪光束和记录或再现光束被公共物镜聚焦到记录介质上，并且记录或再现光束相对于跟踪光束的倾斜角度以逐步或连续的方式通过旋转布置在记录或再现光束的路径中的可摆动反射镜。记录或再现光束在记录介质盘的径向移动以跟踪同心或螺旋信息轨道。在导轨中形成附加信号，例如用于实现随机存取的地址信号和同步信号。

47. 发明授权

US4505584A Method and apparatus for detecting focussing error signal of objective lens 失效
标题翻译：用于检测物镜聚焦误差信号的方法和装置
公开(公告)号：US4505584A
公开(公告)日：1985-03-19
申请号：US339718
申请日：1982-01-15
申请人： Kiichi Kato , Tohru Musha , Kenichi Ito
发明人： Kiichi Kato , Tohru Musha , Kenichi Ito
IPC分类号： G02B7/09 , G02B27/16 , G11B7/09 , G01J1/36
CPC分类号： G02B27/16 , G11B7/0908 , G11B7/0917 , G11B2007/0919
摘要： In order to derive a focussing error signal of an objective lens with respect to a video disc on which a light beam is focussed by the objective lens, the P-polarized light beam is made incident upon a prism and then upon a thin film which is applied to the prism and has a refractive index higher than that of the prism, and the light beam reflected by a boundary surface between the thin film and the air is detected by a photo-detector having two light receiving regions. The thin film is made of material having a higher refractive index than that of the prism. Between the prism and the thin film there may be interposed at least one additional thin film in such a manner that the lower and higher refractive index thin films are alternately arranged.
摘要翻译：为了导出物镜相对于其上由物镜聚焦的视盘的聚焦误差信号，P偏振光束入射到棱镜上，然后被置于薄膜上，该薄膜是施加到棱镜并且具有比棱镜高的折射率，并且由具有两个光接收区域的光检测器检测由薄膜和空气之间的边界面反射的光束。该薄膜由折射率高于棱镜的材料制成。在棱镜和薄膜之间可以插入至少一个附加薄膜，使得下折射率薄膜和高折射率薄膜交替布置。

48. 发明授权

US4472748A Method of processing information signal with respect to opto-magnetic record medium 失效
标题翻译：相对于光磁记录介质处理信息信号的方法
公开(公告)号：US4472748A
公开(公告)日：1984-09-18
申请号：US336319
申请日：1981-12-31
申请人： Kiichi Kato , Tsuneo Yanagida
发明人： Kiichi Kato , Tsuneo Yanagida
IPC分类号： G11B5/02 , G11B11/10 , G11B11/105
CPC分类号： G11B11/10517 , G11B11/10536
摘要： In a method of recording an information signal in an opto-magnetic record disc which has an easily magnetizable axis perpendicular to its surface, a constant erasing light beam and a modulated recording light beam are focussed by a single objective lens on adjacent tracks and an external magnetic field is applied to the record medium. The erasing and recording operations can be carried out at the same time by inverting the polarity of the external magnetic field track by track.
摘要翻译：在将信息信号记录在具有与其表面垂直的易磁化轴的光磁记录盘中的方法中，恒定的擦除光束和调制的记录光束被相邻轨道上的单个物镜聚焦，外部磁场被施加到记录介质上。擦除和记录操作可以通过使轨道上的外部磁场轨迹的极性反转来同时进行。

49. 发明授权

US4425636A Method and apparatus for reproducing optically an information recorded on a record medium along tracks 失效
标题翻译：用于沿着轨道光学地再现记录在记录介质上的信息的方法和装置
公开(公告)号：US4425636A
公开(公告)日：1984-01-10
申请号：US301092
申请日：1981-09-10
申请人： Tohru Musha , Kiichi Kato , Kenichi Ito
发明人： Tohru Musha , Kiichi Kato , Kenichi Ito
IPC分类号： G02B7/28 , G11B7/08 , G11B7/09 , G11B7/12 , G11B7/135 , G11B7/1359 , G11B7/1381 , G11B11/105 , G11B7/00 , G11B21/02
CPC分类号： G11B11/10515 , G11B11/10543 , G11B11/10576 , G11B7/08 , G11B7/0901 , G11B7/0908 , G11B7/0917 , G11B7/12 , G11B7/1359 , G11B7/1381 , G11B2007/0919
摘要： In a method and apparatus for detecting an information signal and a focussing error signal of an objective lens with respect to a video disc on which main and sub beams emitted from a laser light source are to be focussed as light spots by the objective lens, the main and sub beams reflected by the video disc are made incident as parallel light fluxes upon a detection prism surface which is set substantially at a critical angle with respect to the main beam, but at an angle smaller or larger than the critical angle with respect to the sub beam, and two light fluxes of the reflected main beam which situate on respective sides of a boundary plane including the central light ray and perpendicular to a plane of incidence, and are reflected by the reflection surface are separately received by two light receiving regions which are divided along a boundary plane including the main beam reflected by the reflection surface and perpendicular to the plane of incidence. The focussing error signal is derived as a difference between output signals from the two light receiving regions and the information signal is derived as a sum of the output signals from the two light receiving regions. The sub beam transmitted through and refracted by the reflection surface is received by a light detector and a tracking error signal is derived by detecting a variation in a light amount of the sub beam impinging upon the light detector.
摘要翻译：在用于检测物镜的信息信号和聚焦误差信号的方法和装置中，相对于其中从激光光源发射的主光束和子光束被物镜聚焦为光点的视盘，由视频盘反射的主光束和副光束作为平行光束入射到检测棱镜表面上，检测棱镜表面相对于主光束基本上设置在临界角，但是以相对于主光束的临界角小于或大于副光束和位于包括中心光线并且垂直于入射平面的边界面的相应侧上并被反射表面反射的反射主光束的两个光束分别被两个光接收区域其沿着包括由反射表面反射并垂直于入射平面的主光束的边界平面划分。聚焦误差信号被导出为来自两个光接收区域的输出信号之间的差异，并且信息信号被导出为来自两个光接收区域的输出信号的和。由光检测器接收透射并被反射面折射的子光束，并且通过检测入射到光检测器上的子光束的光量的变化导出跟踪误差信号。

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