利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

78 条记录 (耗时 0.04 秒)

    Correcting Scanned Projector Distortion By Varying the Scan Amplitude
    71.
    发明申请
    Correcting Scanned Projector Distortion By Varying the Scan Amplitude 有权
    通过改变扫描幅度校正扫描投影仪失真

    公开(公告)号：US20110013097A1

    公开(公告)日：2011-01-20

    申请号：US12505415

    申请日：2009-07-17

    申请人： Mark O. Freeman ,  Karlton D. Powell

    发明人： Mark O. Freeman ,  Karlton D. Powell

    IPC分类号： H04N3/26

    CPC分类号： H04N9/3185 ,  H04N9/3129 ,  H04N9/3182 ,  H04N9/3194

    摘要： Briefly, in accordance with one or more embodiments, scanned beam projector may comprise a light source, a scan drive and a scanning platform to project an image onto a projection surface. The scan drive circuit is capable of at least partially correcting distortion in the projected image by varying an amplitude of the scan drive signal to at least partially compensate for the distortion in the projected image.

    摘要翻译： 简而言之，根据一个或多个实施例，扫描光束投影仪可以包括光源，扫描驱动器和将图像投影到投影表面上的扫描平台。 扫描驱动电路能够通过改变扫描驱动信号的幅度来至少部分地补偿投影图像中的失真，来至少部分地校正投影图像中的失真。

    Wide Field of View Head-Up Display System
    74.
    发明申请
    Wide Field of View Head-Up Display System 有权
    宽视野平视显示系统

    公开(公告)号：US20090201589A1

    公开(公告)日：2009-08-13

    申请号：US12424129

    申请日：2009-04-15

    申请人： Mark O. Freeman

    发明人： Mark O. Freeman

    IPC分类号： G02B27/01 ,  G03B21/26

    CPC分类号： G02B27/0103 ,  G02B3/08 ,  G02B26/10 ,  G02B2027/0123 ,  G03B21/60 ,  H04N9/3129

    摘要： A projection system, such as a system suitable for head-up displays in automobiles, includes a laser projection source (101) and a scanner (102). Light from the laser projection source (101) is scanned across a projection surface (104), which can be a car's windshield. The projection surface (104) includes a buried numerical aperture expander (105) capable of reflecting some light and transmitting other light. The system may also include an image projection source (551) capable of presenting high-resolution images on a sub-region (552) of the projection surface (604) that has a optical relay (650) disposed therein.

    摘要翻译： 诸如适用于汽车中的平视显示器的系统的投影系统包括激光投影源（101）和扫描仪（102）。 来自激光投射源（101）的光被扫描穿过可以是汽车的挡风玻璃的投影表面（104）。 投影表面（104）包括能够反射一些光并透射其他光的埋入式数值孔径扩展器（105）。 该系统还可以包括能够在其中设置有光学继电器（650）的投影表面（604）的子区域（552）上呈现高分辨率图像的图像投影源（551）。

    Robust and versatile focus/tracking method and system for optical pickup heads
    75.
    发明授权
    Robust and versatile focus/tracking method and system for optical pickup heads 失效
    强大的多功能聚焦/跟踪方法和系统的光学拾音头

    公开(公告)号：US06377520B2

    公开(公告)日：2002-04-23

    申请号：US09063946

    申请日：1998-04-21

    申请人： Mark O. Freeman ,  Jinn-Kang Wang ,  Hsi-Fu Shih

    发明人： Mark O. Freeman ,  Jinn-Kang Wang ,  Hsi-Fu Shih

    IPC分类号： G11B700

    CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/127 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1365 ,  G11B7/1384 ,  G11B2007/0006

    摘要： A focus/tracking method and system is provided for use in an optical drive with a possibly multiple-wavelength laser source for control of the focus/tracking of the pickup head of the optical drive. The use of a multiple-wavelength laser source allows the optical drive to read data from various types of optical discs. The focus/tracking method and system combines the use of a differential, dual optical channel method for focusing control of the laser beam used to read data from the optical disc and the use of the single-beam tracking method for tracking control of the same. The focus error signal and the tracking error signal can be obtained from the same set of multi-element photodetectors. The structure of the system can therefore be simplified to include a reduced number of constituent components thus allowing a reduction in manufacturing cost.

    摘要翻译： 提供了一种用于具有可能的多波长激光源的光学驱动器中的焦点/跟踪方法和系统，用于控制光学驱动器的拾取头的聚焦/跟踪。 使用多波长激光源允许光驱从各种类型的光盘读取数据。 聚焦/跟踪方法和系统结合了使用差分双光道方法来聚焦用于从光盘读取数据的激光束的控制，以及使用单光束跟踪方法来跟踪其控制。 聚焦误差信号和跟踪误差信号可以从同一组多元件光电探测器获得。 因此，可以将系统的结构简化为包括减少数量的组成部件，从而允许降低制造成本。

    Multiple-beam holographic optical pick-up head
    76.
    发明授权
    Multiple-beam holographic optical pick-up head 失效
    多光束全息光学拾光头

    公开(公告)号：US06369377B1

    公开(公告)日：2002-04-09

    申请号：US09615412

    申请日：2000-07-13

    申请人： Hsi-Fu Shih ,  Jau-Jiu Ju ,  Tzu-Ping Yang ,  Wei-Chih Lu ,  Mark O. Freeman ,  Der-Ray Huang ,  Carl Y. Yang

    发明人： Hsi-Fu Shih ,  Jau-Jiu Ju ,  Tzu-Ping Yang ,  Wei-Chih Lu ,  Mark O. Freeman ,  Der-Ray Huang ,  Carl Y. Yang

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G11B7/14

    摘要： The present invention discloses a multiple-beam holographic optical pick-up head, which has the advantages of the multiple-beam optical pick-up head and the holographic optical pick-up head and can increase the light usage efficiency. This invention uses the property that a polarized diffractive optical element can generate different optical effects for laser beam with different polarizations and places a polarized multiple-beam grating and polarized hologram on the optical path for splitting the incident light toward the disc into multiple reading beams by the multiple-beam grating. The returning laser beams reflected from the disc are diffracted and diverted by the hologram to reach a photodetector. Both the incident and reflective beams are diffracted once only; thus the light usage efficiency can be increased.

    摘要翻译： 本发明公开了一种多光束全息光学拾波头，其具有多光束拾取头和全息光学拾取头的优点，可以提高光的使用效率。 本发明使用偏振衍射光学元件可以对具有不同偏振度的激光束产生不同光学效应的特性，并且在光路上放置偏振多光束光栅和偏振全息图，以将入射光朝向盘分离为多个读取光束 多光束光栅。 从盘反射的返回激光束被全息图衍射并转移到光电检测器。 入射光束和反射光束都被衍射一次; 从而可以提高光的使用效率。

    Single surface diffractive element for optical pickup heads
    78.
    发明授权
    Single surface diffractive element for optical pickup heads 失效
    用于光学拾取头的单面衍射元件

    公开(公告)号：US5652744A

    公开(公告)日：1997-07-29

    申请号：US598659

    申请日：1996-02-08

    申请人： Mark O. Freeman ,  Hung-Te Lee

    发明人： Mark O. Freeman ,  Hung-Te Lee

    IPC分类号： G02B5/18 ,  G11B7/09 ,  G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/1353 ,  G02B5/1861 ,  G11B7/0908 ,  G11B7/0909 ,  G11B7/0912

    摘要： An optical pickup device including a lighting source, a condensing apparatus, a diffracting means, and a light detector. The light source generates and emits a light beam to the diffracting means. The diffracting means includes a center region and an outer region which encloses the center region. As the light travels from the light source towards the optical storage medium the main zero-order beam which reads the information on the disk encounters only the center region of the diffracting means while the two sub-beams used for track following are created as +1 and -1 diffraction orders from the outer region of the diffracting means. The three beams reflected from the recording medium all pass through the center region of the diffracting means and are diffracted in the direction of the detector therefrom. The light detector consists of multiple detector elements which convert the light that shines upon them after reflection from the recording medium into electronic signals containing the information that was recorded on the medium.

    摘要翻译： 一种包括照明源，冷凝装置，衍射装置和光检测器的光学拾取装置。 光源产生并向衍射装置发射光束。 衍射装置包括中心区域和包围中心区域的外部区域。 当光从光源向光学存储介质传播时，读取磁盘上的信息的主要零级光束仅遇到衍射装置的中心区域，而用于跟踪的两个子光束被创建为+1 和衍射装置的外部区域的-1个衍射级。 从记录介质反射的三个光束全部通过衍射装置的中心区域，并沿着检测器的方向衍射。 光检测器由多个检测器元件组成，其在从记录介质反射之后将照射到其上的光转换成包含记录在介质上的信息的电子信号。