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公开(公告)号：US4460977A
公开(公告)日：1984-07-17
申请号：US345391
申请日：1982-02-03
CPC分类号： G11B7/1367 , G11B7/13 , H01S5/0028 , H01S5/0656
摘要： An optical memory playback apparatus is constructed so that a single longitudinal mode of laser beam emitted from a self-coupling semiconductor laser element is projected through an optical system onto an information recording medium and the laser beam reflected by the information recording medium is returned through the same optical system back to the semiconductor laser element. In addition, the apparatus interposes a spatially uneven phase plate in the optical system, whereby the longitudinal mode of emission of the semiconductor laser element is converted into a random multi-mode at all times and, consequently, the reproduction of information from the information recording medium is effected by detecting the variation in the intensity of output or terminal voltage of the semiconductor laser element which occurs in conformity with the variation in the intensity of the reflected laser beam.
摘要翻译： 光学存储器重放装置被构造成使得从自耦合半导体激光元件发射的单个纵向模式的激光束通过光学系统投射到信息记录介质上，由信息记录介质反射的激光束通过 相同的光学系统返回到半导体激光元件。 此外，该装置将空间不平坦相位板插入光学系统中，由此半导体激光元件的纵向发射模式总是被转换成随机多模式，因此从信息记录中再现信息 介质通过检测与反射激光束的强度的变化相一致而发生的半导体激光元件的输出强度或端子电压的变化而实现。
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公开(公告)号：US4431308A
公开(公告)日：1984-02-14
申请号：US292419
申请日：1981-08-13
CPC分类号： G01C19/66 , H01S5/1071
摘要： A semiconductor ring laser apparatus is provided which comprises a semiconductor laser element having electrical terminals and optical terminals. An electrical power supply means is coupled to the electrical terminals for applying a voltage thereto and optical means are optically coupled to the optical terminals of the semiconductor laser element. The optical means form resonant ring optical paths in clockwise and counterclockwise directions for the light which is emitted by the semiconductor. Detector means are provided which are coupled to said electrical terminals for detecting voltage variations thereon caused by the rotation of the apparatus.
摘要翻译： 提供一种半导体环激光装置，其包括具有电端子和光端子的半导体激光元件。 电源装置被耦合到电端子以施加电压，并且光学装置光耦合到半导体激光元件的光学端子。 光学装置为半导体发出的光形成顺时针和逆时针方向的共振环光路。 提供检测器装置，其耦合到所述电端子，用于检测由所述装置的旋转引起的电压变化。
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公开(公告)号：US4405236A
公开(公告)日：1983-09-20
申请号：US292418
申请日：1981-08-13
CPC分类号： H01S3/083 , G01C19/66 , H01S5/1071
摘要： A semiconductor ring laser apparatus is provided which comprises a semiconductor laser element having a waveguide region therein and parallel cleavage planes formed between the waveguide region and the medium adjacent thereto. The waveguide region is inclined at a Brewster angle with respect to the normal to the cleavage planes in relation to the medium of the waveguide region and the adjacent medium, and optical means which have a ring-formed optical path are optically coupled to the waveguide region for receiving light therefrom through one of the cleavage planes. These optical means return at least a portion of the light from one of the cleavage planes to the other of the cleavage planes, with the semiconductor laser element and the optical means thereby forming a ring laser oscillator.
摘要翻译： 提供一种半导体环形激光装置，其包括其中具有波导区域的半导体激光元件和在波导区域和与其相邻的介质之间形成的平行解理面。 相对于波导区域和相邻介质的介质，波导区域相对于解理面的法线倾斜为布鲁斯特角，并且具有环形光路的光学装置光学耦合到波导区域 用于从其中的一个解理平面接收光。 这些光学装置使至少一部分光从解理面之一返回至解理平面中的另一个，半导体激光元件和光学装置由此形成环形激光振荡器。
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4.发明授权Spherical lens for spherically symmetrical graded refractive index distribution provided with rod clad 失效用于球形对称分级折射率分布的球面透镜，提供棒包层
公开(公告)号：US4557566A
公开(公告)日：1985-12-10
申请号：US362500
申请日：1982-03-26
CPC分类号： G02B6/2817 , G02B3/0087
摘要： A spherical lens of graded refractive index distribution comprises a core of uneven refractive index of the shape of a sphere or hemisphere and a clad of the shape of a spherical shell and a rod clad, with the two clads disposed on the periphery of the core. By the combination of the core showing negative aberration characteristic and the spherical-shell type clad and the rod clad both showing positive aberration characteristic, there can be formed a lens of corrected aberration. This lens suits combination or integration with other elements and permits easy manufacture of clads. It also provides effective convergence of beams of light desirable for use in an optical pickup, for example.
摘要翻译： 梯度折射率分布的球面透镜包括球形或半球形状的折射率不均匀的芯和球形壳的形状的包层和包覆的棒，其中两个包层设置在芯的周边。 通过组合显示负像差特性的核心和球壳型包层和显示正像差特性的棒包层，可以形成校正像差的透镜。 这种镜头适合与其他元素的组合或集成，并允许容易地制造包层。 它还提供了例如用于光学拾取器中期望的光束的有效会聚。
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公开(公告)号：US4449204A
公开(公告)日：1984-05-15
申请号：US248211
申请日：1981-03-27
申请人： Junichi Shimada , Yoshinobu Mitsuhashi , Kenjiro Sakurai , Takitaro Morikawa , Shuichi Mitsuzuka
发明人： Junichi Shimada , Yoshinobu Mitsuhashi , Kenjiro Sakurai , Takitaro Morikawa , Shuichi Mitsuzuka
IPC分类号： G11B7/13 , G11B7/135 , G11B7/1365 , H01S5/00 , G11C13/08
CPC分类号： G11B7/13 , G11B7/1365
摘要： An optical information processing apparatus comprises an information recording medium, a semiconductor laser diode for issuing a laser beam and an optical system adapted to direct the issued laser beam from the semiconductor laser diode toward the information recording medium and then return the reflected laser beam from the medium to the diode and provided with means capable of rotating the plane of polarization of the reflected laser beam from the medium by 90.degree. relative to the plane of polarization of the issued laser beam.
摘要翻译： 一种光学信息处理设备包括信息记录介质，用于发出激光束的半导体激光二极管和适于将来自半导体激光二极管的所发出的激光束引向信息记录介质的光学系统，然后使来自 介质到二极管并且具有能够使来自介质的反射激光束的偏振平面相对于所发出的激光束的偏振平面旋转90度的装置。
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公开(公告)号：US4422733A
公开(公告)日：1983-12-27
申请号：US244915
申请日：1981-03-18
CPC分类号： G02B3/0087
摘要： A cladded lens having an uneven refractive index comprises a spherical core having a graded refractive index and producing negative lateral aberration and a cladding producing positive lateral aberration. The aberrations of the core and the cladding are canceled by each other to be considerably corrected. Such a cladded lens is especially effective for optical communication and optical recording-regenerating as in PCM technology.
摘要翻译： 具有不均匀折射率的包层透镜包括具有渐变折射率并产生负横向像差的球形芯和产生正横向像差的包层。 芯和包层的像差被相互抵消得到很大的修正。 这种包层透镜对于光通信和光学记录再生特别有效，如PCM技术。
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公开(公告)号：US4190775A
公开(公告)日：1980-02-26
申请号：US919275
申请日：1978-06-26
申请人： Kenjiro Sakurai , Junichi Shimada , Takitaro Morikawa , Yoshinobu Mitsuhashi , Satoshi Ishihara , Atsuya Seko , Tetsutaro Yasuhira
发明人： Kenjiro Sakurai , Junichi Shimada , Takitaro Morikawa , Yoshinobu Mitsuhashi , Satoshi Ishihara , Atsuya Seko , Tetsutaro Yasuhira
CPC分类号： G11B7/09 , G06K7/10 , G11B7/0917 , G11B7/13 , G11C11/42
摘要： Disclosed is an optical memory playback apparatus using an electroluminescent semiconductor element as a combination light source and sensor, which apparatus permits information in an information storage medium to be reproduced in the form of variation in electrical characteristics of the semiconductor element by causing a beam of light issuing from the electroluminescent semiconductor element to be directed to the information storage medium, allowing the light reflected by the information storage medium to impinge on the semiconductor element for thereby inducing variation in the optical and electrical characteristics of the semiconductor element owing to the self-coupling effect.
摘要翻译： 公开了一种使用电致发光半导体元件作为组合光源和传感器的光存储器重放装置，该装置允许信息存储介质中的信息以半导体元件的电特性变化的形式通过产生光束而被再现 从电致发光半导体元件发出要被引导到信息存储介质，允许由信息存储介质反射的光撞击在半导体元件上，从而由于自耦合而引起半导体元件的光学和电学特性的变化 影响。
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