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1. 发明授权

US5050153A Semiconductor laser optical head assembly 失效
标题翻译：半导体激光光头组件
公开(公告)号：US5050153A
公开(公告)日：1991-09-17
申请号：US362124
申请日：1989-06-06
申请人： Wai-Hon Lee
发明人： Wai-Hon Lee
IPC分类号： G02B5/32 , G11B7/09 , G11B7/12 , G11B7/135
CPC分类号： G11B7/1392 , G11B7/094 , G11B7/123 , G11B7/1353 , G11B7/1378 , G11B7/0901 , G11B7/0903 , G11B7/0909
摘要： An improved optical head for reading information recorded on a reflected medium. The optical head uses a hologram lens assembly having a transparent plate and a hologram lens, the transparent plate being obliquely positioned relative to a forward and a return beam paths. The transparent plate corrects beam aberrations in a laser beam emitted by a semiconductor laser on the forward beam path. The hologram lens diffracts the laser beam on the return beam path onto a photodetector. Both the transparent plate and the hologram lens add beam aberrations to the defracted laser beam on the return beam path for tracking purposes. The hologram lens assembly may also include a second hologram lens, preferably a three beam diffraction grating, for tracking purposes. The hologram lens and the diffraction grating may be located on the obliquely positioned transparent plate or on other transparent plates.

2. 发明授权

US4757197A Semiconductor laser and detector device 失效
标题翻译：半导体激光和检测器
公开(公告)号：US4757197A
公开(公告)日：1988-07-12
申请号：US858411
申请日：1986-05-01
申请人： Wai-Hon Lee
发明人： Wai-Hon Lee
IPC分类号： G01J1/02 , H01L33/00 , H01S5/00 , H01S5/026 , H01J5/02
CPC分类号： H01S5/026
摘要： A combined semiconductor laser and photodetector with a photodetector arranged to directly monitor light reflected off an object surface from the semiconductor laser. A photodetector is mounted in the same plane as the surface of the semiconductor laser which emits light. This plane is substantially perpendicular to the central axis of the cone of light emitted from the semiconductor laser. The photodetector and the semiconductor laser are both mounted within a single housing.
摘要翻译：具有光电检测器的组合半导体激光器和光电检测器，被布置成直接监测从半导体激光器反射离开物体表面的光。光电检测器安装在与发出光的半导体激光器的表面相同的平面中。该平面基本上垂直于从半导体激光器发射的光锥的中心轴线。光电检测器和半导体激光器都安装在单个外壳内。

3. 发明授权

US4794585A Optical head having a hologram lens and polarizers for use with magneto-optic medium 失效
标题翻译：具有全息透镜的光学头和用于磁光介质的偏振器
公开(公告)号：US4794585A
公开(公告)日：1988-12-27
申请号：US938085
申请日：1986-12-04
申请人： Wai-Hon Lee
发明人： Wai-Hon Lee
IPC分类号： G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1353 , G11B11/10532 , G11B7/123
摘要： An optical head which uses a single diffraction grating to eliminate the need for both a beam-splitter and a biprism lens. This invention allows the placement of all the elements except the photodetector along a single optical axis with the photodetector immediately adjacent to the optical axis. This arrangement reduces alignment problems and vibrational errors. A semiconductor laser is provided which produces a laser beam which impinges upon a movable objective lens. The objective lens focuses the laser beam onto an information medium. A holographic diffraction grating is placed between the laser and the objective lens. The diffracted beams on the forward path from the laser to the objective lens are not used, but on the return path, one of the diffracted beams is focused onto a photodetector. In a first embodiment, the photodetector is adjacent the semiconductor laser in substantially the same plane. In a second embodiment, an additional lens is used to produce an additional focus point intermediate the laser and the medium, with the photodetector being in substantially the same plane as this additional focal point. By using an appropriate fringe pattern for the hologram lens, the return beam can be focused on the photodetector as desired.
摘要翻译：使用单个衍射光栅来消除对分束器和双棱镜透镜的需要的光学头。本发明允许除了光电检测器之外的所有元件沿着单个光轴放置，光电检测器紧邻光轴。这种布置减少了对准问题和振动误差。提供半导体激光器，其产生撞击可移动物镜的激光束。物镜将激光束聚焦到信息介质上。全息衍射光栅放置在激光和物镜之间。不使用从激光器到物镜的前向路径上的衍射光束，但是在返回路径上，衍射光束之一被聚焦到光电检测器上。在第一实施例中，光电检测器在基本上相同的平面内与半导体激光器相邻。在第二实施例中，使用附加透镜来产生在激光和介质之间的附加焦点，其中光电检测器处于与该附加焦点基本相同的平面。通过对全息透镜使用适当的条纹图案，返回光束可以根据需要聚焦在光电探测器上。

4. 发明授权

US5156999A Packaging method for semiconductor laser/detector devices 失效
标题翻译：半导体激光/检测器装置的封装方法
公开(公告)号：US5156999A
公开(公告)日：1992-10-20
申请号：US536136
申请日：1990-06-08
申请人： Wai-Hon Lee
发明人： Wai-Hon Lee
IPC分类号： H01L25/16 , H01L33/48 , H01S3/00 , H01S5/00 , H01S5/022
CPC分类号： H01L25/167 , H01L2224/48091 , H01L2924/01004 , H01L2924/01014 , H01L2924/10253 , H01L2924/12041 , H01L33/483 , H01S5/02276 , H01S5/0683 , H01S5/4025
摘要： A method for packaging a hybrid device which has a semiconductor laser diode and photodetectors. The laser diode is mounted on a silicon chip (a "silicon submount") containing a photodetector for monitoring the laser power. An array of silicon submounts are mounted on a heat-sink plate which consists of a heat-sink substrate covered with a metal layer. The metal layer is cut in multiple places down to the heat-sink substrate to form multiple conductive strips. The heat-sink plate with the silicon submounts is then covered with a heat-sink cover plate which has identations formed to provide cavities for the silicon submounts. In addition, cavities are provided to allow connections to the conducting metal strips. The combined assembly is then sliced into bars exposing an opening for the laser diode and openings for connections to the conductive strips. The bars are turned on their sides and laminated to a glass substrate to form a front window for the laser diode assembly. The bar is then cut into separate pieces, each having a single laser diode. A photodetector may be mounted on the front of the glass window before or after the bar is cut into pieces.
摘要翻译：一种用于封装具有半导体激光二极管和光电检测器的混合器件的方法。激光二极管安装在含有用于监测激光功率的光电检测器的硅芯片（“硅基座”）上。硅基座的阵列安装在由覆盖有金属层的散热基板组成的散热板上。将金属层在多个位置切割成散热基板，以形成多个导电条。具有硅基座的散热板然后被覆盖有散热器盖板，散热器盖板具有形成为用于硅基座的空穴的标记。此外，提供空腔以允许连接到导电金属条。然后将组合的组件切割成条，暴露用于激光二极管的开口和用于连接到导电条的开口。这些杆在它们的侧面转动并且层压到玻璃基板上以形成用于激光二极管组件的前窗。然后将该条切成单独的片，每片具有单个激光二极管。在棒被切割成块之前或之后，光电检测器可以安装在玻璃窗的前面。

5. 发明授权

US4731772A Optical head using hologram lens for both beam splitting and focus error detection functions 失效
标题翻译：光头使用全息透镜进行分光和聚焦误差检测功能
公开(公告)号：US4731772A
公开(公告)日：1988-03-15
申请号：US860154
申请日：1986-05-06
申请人： Wai-Hon Lee
发明人： Wai-Hon Lee
IPC分类号： G11B7/09 , G11B7/12 , G11B7/135 , G11B11/105
CPC分类号： G11B7/1353 , G11B11/10532 , G11B7/123
摘要： An improved optical head which eliminates the need for a biprism or cylindrical lens for focus detection and allows the placement of a photodetector immediately adjacent to the semiconductor laser to reduce alignment problems and vibrational errors. A semiconductor laser is provided which produces a laser beam which impinges upon a movable objective lens. The objective lens focuses the laser beam onto an information medium. A diffraction grating, which may be holographic, is placed between the laser and the objective lens. The diffracted beams on the forward path from the laser to the objective lens are not used, but on the return path, one of the diffracted beams is focused onto a photodetector which is in the same plane as the semiconductor laser.
摘要翻译：一种改进的光学头，其不需要用于焦点检测的双棱镜或柱面透镜，并且允许将光电检测器放置在紧邻半导体激光器的位置以减少对准问题和振动误差。提供半导体激光器，其产生撞击可移动物镜的激光束。物镜将激光束聚焦到信息介质上。可以是全息的衍射光栅放置在激光和物镜之间。不使用从激光器到物镜的前向路径上的衍射光束，但是在返回路径上，衍射光束之一被聚焦到与半导体激光器处于同一平面中的光电检测器。

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