公开(公告)号：US5991249A

公开(公告)日：1999-11-23

申请号：US902398

申请日：1997-07-29

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G11B21/10 ,  G11B7/09 ,  G11B7/125 ,  G11B7/13 ,  G11B21/08 ,  G11B7/00

CPC classification number: G11B21/083

Abstract: An optical sensor consisting of a nearly monochromatic point source such as a light emitting diode (LED) or a vertical cavity surface emitting laser (VCSEL) which is mounted on a multiple element detector. When this sensor is placed near a moving object with a reflective periodic pattern on its surface (such as an optical disk), it can produce a signal which can be used to control the position of the object. Unlike other sensors which often use lenses to project the light emitted by the light source onto the object and collect the light reflected from the object and project them onto a photodector, this new sensor performs the tasks of object illumination and light collection without the use of any optical component. A self-imaging principle is used by placing the detector on the self-imaging plare of the object to detect the motion of the object. In order to detect the periodic signal in the self-image of the periodic object, the detector element is covered with a grating structure having the same period or two times the period of the object.

Abstract translation: 由诸如发光二极管（LED）或垂直腔表面发射激光器（VCSEL）的近似单色点源组成的光学传感器，其安装在多元件检测器上。 当该传感器放置在其表面上具有反射周期性图案（例如光盘）的移动物体附近时，其可以产生可用于控制物体位置的信号。 与其他经常使用透镜将光源发射的光投射到物体上并收集从物体反射的光并将其投射到光电二极管上的其他传感器不同，这种新型传感器执行物体照明和光采集的任务，而不使用 任何光学元件。 使用自我成像原理，将检测器放置在物体的自成像检测器上，以检测物体的运动。 为了检测周期性物体的自身图像中的周期性信号，检测器元件被覆盖有与物体的周期相同或两倍的光栅结构。

公开(公告)号：US5285062A

公开(公告)日：1994-02-08

申请号：US868751

申请日：1992-04-14

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G11B7/12 ,  G11B7/00

CPC classification number: G11B7/123

Abstract: The present invention provides a semiconductor laser and a photodector on a supporting substrate. The supporting substrate is inserted into a housing with a 45 degree mirror for the purpose of redirecting the light emitting through the edge of the laser to propagate along the optical axis of the hybrid device. A hologram lens is mounted at the output end of the hybrid device to diffract the returned beam to the photosensitive ares of the detector without returning through the mirror.

Abstract translation: 本发明在支撑基板上提供半导体激光器和光电探测器。 将支撑衬底插入到具有45度镜的壳体中，以便重定向通过激光器的边缘发射的光以沿着混合设备的光轴传播。 全息透​​镜安装在混合设备的输出端，以将返回的光束衍射到检测器的感光体，而不通过反射镜返回。

公开(公告)号：US5050153A

公开(公告)日：1991-09-17

申请号：US362124

申请日：1989-06-06

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G02B5/32 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135

CPC classification number: G11B7/1392 ,  G11B7/094 ,  G11B7/123 ,  G11B7/1353 ,  G11B7/1378 ,  G11B7/0901 ,  G11B7/0903 ,  G11B7/0909

Abstract: 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.

公开(公告)号：US5001694A

公开(公告)日：1991-03-19

申请号：US209148

申请日：1988-06-17

Applicant: Wai-Hon Lee ,  David I. Cullumber

Inventor： Wai-Hon Lee ,  David I. Cullumber

IPC: G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B11/105 ,  G11B7/00

CPC classification number: G11B11/10532 ,  G11B7/093 ,  G11B7/12 ,  G11B7/123 ,  G11B7/1353

Abstract: An actuator for an objective lens in an optical head which provides a compact structure that does not move the laser beam relative to the objective lens in the tracking mode. The low profile optical head design is accomplished by designing the optical beam path in the same space occupied by the tracking and focusing motor. A mirror reflects a laser beam from a laser at an angle to an objective lens. The objective lens and the mirror are coupled together in a manner allowing movement of the objective lens relative to the mirror along the path of a laser beam from the mirror to the objective lens. The objective lens, mirror and the coupling mechanism are all moved along the path of the laser beam between laser and the mirror for tracking control. Because the mirror moves with the objective lens, there is no beam clipping or beam distortion. For focusing, the objective lens is moved relative to the mirror. The laser, the detector and their associated optics are stationary, with only the mirror and objective lens being moved, thus limiting the mass moved and the power requirements. The simple structure eliminates the need for a fiber optic cable.

Abstract translation: 一种用于光学头中的物镜的致动器，其提供在跟踪模式下不相对于物镜移动激光束的紧凑结构。 通过在跟踪和聚焦电机占据的相同空间中设计光束路径来实现低轮廓光学头设计。 反射镜将来自激光器的激光束以与物镜成角度的方式反射。 物镜和反射镜以允许物镜相对于反射镜沿着激光束从镜子到物镜的路径移动的方式耦合在一起。 物镜，镜子和耦合机构都沿激光束与激光束之间的路径移动，用于跟踪控制。 因为镜子随着物镜移动，所以没有光束剪切或光束失真。 对于聚焦，物镜相对于镜子移动。 激光器，检测器及其相关光学器件是静止的，只有镜子和物镜被移动，从而限制质量移动和功率需求。 简单的结构消除了对光缆的需要。

公开(公告)号：US4996169A

公开(公告)日：1991-02-26

申请号：US525525

申请日：1990-05-18

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G11B7/12 ,  G11B7/125 ,  H01L27/15 ,  H01L33/00 ,  H01L33/64 ,  H01S5/02 ,  H01S5/022 ,  H01S5/026

CPC classification number: G11B7/127 ,  G11B7/123 ,  H01L2224/48091 ,  H01L2224/49171 ,  H01L2924/10253 ,  H01S5/02248 ,  H01S5/0683 ,  Y10S228/904

Abstract: A semiconductor laser assembly is provided with a photodetector module and a laser module mounted on orthogonal surfaces of a heatsink. The photodetector module includes a photodetector and two electrically isolated wire bond blocks, each with two surfaces parallel to the orthogonal surfaces of the heatsink. The laser module includes a laser diode bonded and a wire bond region with two surfaces also parallel to the orthogonal surfaces of the heatsink. Both of the wire bond block surfaces of the photodetector modules are thus parallel to the wire bond region surfaces on the laser module, allowing wire connections to be made between parallel surfaces before the heat sink is mounted on a header. One of the surfaces of each of the wire bond blocks and regions is parallel to the pins of a header, allowing attachment of wires from the photodetector module and the laser module to the pins without rotating the header and pins.

公开(公告)号：US4906839A

公开(公告)日：1990-03-06

申请号：US213647

申请日：1988-06-30

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G11B11/10 ,  G11B7/12 ,  G11B7/125 ,  G11B11/105 ,  H01L33/00 ,  H01S5/00 ,  H01S5/022 ,  H01S5/026 ,  H01S5/18

CPC classification number: H01S5/02248 ,  G11B7/124 ,  G11B7/127 ,  H01S5/02212 ,  H01S5/02292 ,  H01S5/0683

Abstract: The present invention is a combined surface emitting semiconductor laser and photodetector in a single housing with the photodetector positioned to detect light emitted from the surface emitting laser and reflected off of a medium. The surface emitting laser is mounted on the top surface of a chip which includes at least one set of two photodetectors for detecting a reflected beam. At least two photodetectors are used so that spacial variations in the reflected beam can be detected for focusing and tracking when the device is used in an optical head. Photodetectors are arranged to intersect a diffracted beam from a hologram lens used in an optical head. A rear emission photodetector for monitoring the power of the surface emitting laser is positioned so that it will not receive diffracted light which will interfere with its operation.

Abstract translation: 本发明是单个外壳中的组合表面发射半导体激光器和光电检测器，其中光电检测器定位成检测从表面发射激光器发出的光并从介质反射。 表面发射激光器安装在芯片的顶表面上，该芯片包括用于检测反射光束的至少一组两个光电检测器。 使用至少两个光电检测器，使得当将该装置用于光学头时，可以检测反射光束中的空间变化以进行聚焦和跟踪。 光检测器布置成与来自用于光学头的全息透镜的衍射光束相交。 用于监测表面发射激光器的功率的后发射光电检测器被定位成使得其不会接收会干扰其操作的衍射光。

公开(公告)号：US4757197A

公开(公告)日：1988-07-12

申请号：US858411

申请日：1986-05-01

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G01J1/02 ,  H01L33/00 ,  H01S5/00 ,  H01S5/026 ,  H01J5/02

CPC classification number: H01S5/026

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US09036117B2

公开(公告)日：2015-05-19

申请号：US13435323

申请日：2012-03-30

Applicant: Wang-Yang Li ,  Ting-I Wu ,  Huai-Fang Tsai ,  Wai-Hon Lee

Inventor： Wang-Yang Li ,  Ting-I Wu ,  Huai-Fang Tsai ,  Wai-Hon Lee

IPC: G02F1/1335

CPC classification number: G02F1/133504 ,  G02F2001/133562 ,  G02F2201/305

Abstract: A display apparatus is provided. The display apparatus comprises a display device for displaying an image and a diffractive optical element. The diffractive optical element is disposed on a light emitting side of the display device. The diffractive optical element comprises first grating regions. Each of the first grating regions has first diffraction gratings having a constant cycle space and the same azimuth angle. An area of the first grating regions occupies 17.5%˜94% of an area of the diffractive optical element.

Abstract translation: 提供一种显示装置。 显示装置包括用于显示图像的显示装置和衍射光学元件。 衍射光学元件设置在显示装置的发光侧。 衍射光学元件包括第一光栅区域。 每个第一光栅区域具有第一衍射光栅，其具有恒定的循环空间和相同的方位角。 第一光栅区域的面积占衍射光学元件面积的17.5％〜94％。

公开(公告)号：US20120274873A1

公开(公告)日：2012-11-01

申请号：US13095027

申请日：2011-04-27

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G02F1/13357

CPC classification number: G02F1/133526 ,  G02F2001/133331

Abstract: Techniques and devices are disclosed to enhance or increase the viewing angle of liquid crystal display (LCD) device through the use of one or more types of optical films. Such optical films can include arrays of prism structures and/or diffractive elements that redirect light that has passed through an LCD panel. The prism structures and/or diffractive elements can be spaced on an optical film to enable at least a portion of the light travelling through the LCD panel to pass through the optical film without being redirected. Various types of prism structures and/or diffractive elements can be used, and they can be configured on the optical film differently to enable different functionality.

Abstract translation: 公开了通过使用一种或多种类型的光学膜来增强或增加液晶显示器（LCD）装置的视角的技术和装置。 这种光学膜可以包括棱镜结构和/或衍射元件的阵列，其重定向已经通过LCD面板的光。 棱镜结构和/或衍射元件可以在光学膜上间隔开，以使得穿过LCD面板的光的至少一部分能够通过光学膜而不被重定向。 可以使用各种类型的棱镜结构和/或衍射元件，并且它们可以在光学膜上配置不同以实现不同的功能。

公开(公告)号：US07619820B2

公开(公告)日：2009-11-17

申请号：US11054851

申请日：2005-02-09

Applicant: Wai-Hon Lee

Inventor： Wai-Hon Lee

IPC: G02B5/18

CPC classification number: G02B5/1861 ,  G02B5/1857

Abstract: A diffractive unit which can reduce the effect of the nonlinearity of the photo-resist recording material to produce a diffractive device with brilliant color, and describes a method for recording. A cross grating device recorded using the method of this present invention is also described. A diffractive pattern is provided with multiple units, and the period of the diffraction within at least one of the units is spatially varying. It has been discovered that a spatially varying period can offset other effects, such nonlinear characteristics of the material or inter-unit gaps, to reduce the harmonics and improve the color.

Abstract translation: 一种衍射单元，其可以降低光致抗蚀剂记录材料的非线性的影响，以产生具有辉煌色彩的衍射装置，并描述了一种记录方法。 还描述了使用本发明的方法记录的交叉光栅装置。 衍射图案具有多个单元，并且至少一个单元内的衍射周期在空间上变化。 已经发现，空间变化的周期可以抵消材料或单元间间隙的这种非线性特性的其他影响，以减少谐波和改善颜色。