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    Method and apparatus for controllably reducing power delivered by a laser projection display
    91.
    发明授权
    Method and apparatus for controllably reducing power delivered by a laser projection display 有权
    用于可控地减少由激光投射显示器传递的功率的方法和装置

    公开(公告)号：US07030353B2

    公开(公告)日：2006-04-18

    申请号：US10836813

    申请日：2004-04-30

    Applicant: Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick F. Wood

    Inventor： Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick F. Wood

    IPC: G01J1/32

    CPC classification number: H04N9/3129

    Abstract: A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.

    Abstract translation: 提供了一种方法和装置，用于响应于检测到观察表面的变化而可控地降低激光投影显示器（LPD）的功率。 在LPD的操作期间，控制器142监视从观察表面反射的激光。 由于控制器142“知道”LPD正在被指示传送的功率量，所以它可以将已知功率与反射的激光进行比较，以确定异物是否在激光的路径中，因此， 影响激光的大小。 控制器142通过减少对激光器的功率来响应来检测这种事件。

    Monitoring light beam position in electro-optical readers and image projectors
    92.
    发明申请
    Monitoring light beam position in electro-optical readers and image projectors 有权
    监控光电读取器和图像投影仪中的光束位置

    公开(公告)号：US20060065735A1

    公开(公告)日：2006-03-30

    申请号：US10956693

    申请日：2004-09-30

    Applicant: Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

    Inventor： Yajun Li ,  Paul Dvorkis ,  Dmitriy Yavid ,  Frederick Wood ,  Miklos Stern ,  Edward Barkan ,  Narayan Nambudri

    IPC: G06K7/10

    CPC classification number: G06K7/10702 ,  G06K7/10683

    Abstract: An arrangement for determining light beam position in an electro-optical reader, image projector and like devices includes a drive for moving a scanning light beam at a scan frequency across a target as a scan line, and an electro-optical feedback assembly operatively connected to the drive, for optically detecting scan line position during beam movement, and for generating a feedback signal at the scan frequency, the feedback signal being indicative of the scan line position. A feedback coil in the drive is eliminated to avoid electromagnetic coupling between multiple coils in the drive.

    Abstract translation: 用于确定电光读取器，图像投影仪等装置中的光束位置的装置包括用于以扫描线跨扫描频率移动扫描光束的驱动器，以及电光反馈组件，其可操作地连接到 驱动器，用于在光束移动期间光学检测扫描线位置，并且用于在扫描频率处产生反馈信号，反馈信号指示扫描线位置。 消除驱动器中的反馈线圈，以避免驱动器中多个线圈之间的电磁耦合。

    Method and apparatus for controllably reducing power delivered by a laser projection display
    93.
    发明申请
    Method and apparatus for controllably reducing power delivered by a laser projection display 有权
    用于可控地减少由激光投射显示器传递的功率的方法和装置

    公开(公告)号：US20050175048A1

    公开(公告)日：2005-08-11

    申请号：US10836813

    申请日：2004-04-30

    Applicant: Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick Wood

    Inventor： Miklos Stern ,  Paul Dvorkis ,  Narayan Nambudiri ,  Carl Wittenberg ,  Chinh Tan ,  Ron Goldman ,  Dmitriy Yavid ,  Frederick Wood

    IPC: G03B21/14 ,  H04N9/31 ,  H01S3/13

    CPC classification number: H04N9/3129

    Abstract: A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.

    Abstract translation: 提供了一种方法和装置，用于响应于检测到观察表面的变化而可控地降低激光投影显示器（LPD）的功率。 在LPD的操作期间，控制器142监视从观察表面反射的激光。 由于控制器142“知道”LPD正在被指示传送的功率量，所以它可以将已知功率与反射的激光进行比较，以确定异物是否在激光的路径中，因此， 影响激光的大小。 控制器142通过减少对激光器的功率来响应来检测这种事件。

    Packaged mirror including mirror travel stops
    98.
    发明授权
    Packaged mirror including mirror travel stops 失效
    包装镜包括镜子行程停止

    公开(公告)号：US06257491B1

    公开(公告)日：2001-07-10

    申请号：US09519576

    申请日：2000-03-06

    Applicant: Chinh Tan ,  Miklos Stern ,  Henry Grossfeld ,  Paul Dvorkis ,  Peter Fazekas

    Inventor： Chinh Tan ,  Miklos Stern ,  Henry Grossfeld ,  Paul Dvorkis ,  Peter Fazekas

    IPC: G06K710

    CPC classification number: G06K7/10742 ,  G06K7/10574 ,  G06K7/10643 ,  G06K7/10653 ,  G06K7/10702 ,  G06K7/10811 ,  H01S5/005 ,  H01S5/02248 ,  H01S5/183 ,  H01S5/423

    Abstract: An integrated optical module for an optical scanner has a lens spaced from a vertical-cavity surface-emitting laser (VCSEL) by a spacer of defined dimensions. The module, in an alternative embodiment, includes a wafer frame, a suspended mirror mounted for oscillation on the frame, a wafer substrate bonded beneath the frame and a wafer cover bonded above the frame. The cover includes a mirror travel stop to protect the mirror against shocks. A VCSEL mounted to the wafer cover produces a beam which is shaped and deflected by a diffractive optical element onto the oscillating mirror. The reflected beam passes out of the module toward an indicia to be read. Large numbers of such devices may be fabricated relatively cheaply using wafer-scale processing and assembly technology. Three large wafers are fabricated corresponding respectively to arrays of substrates, frames and covers. The large wafers are bonded together in a sandwich arrangement, and are then diced to produce the individual scan modules. The modules may provide either one-dimensional or two-dimensional scanning.

    Abstract translation: 用于光学扫描仪的集成光学模块具有通过限定尺寸的间隔件与垂直腔表面发射激光器（VCSEL）间隔开的透镜。 在替代实施例中，该模块包括晶片框架，安装用于在框架上摆动的悬挂镜，结合在框架下方的晶片衬底以及粘结在框架上方的晶片盖。 盖子包括镜子行驶挡板，以防止镜子受到冲击。 安装到晶片盖的VCSEL产生由衍射光学元件成形并偏转到振动反射镜上的光束。 反射光束从模块朝向要读取的标记。 可以使用晶片级处理和组装技术相对便宜地制造大量的这种装置。 制造三个大的晶片，分别对应于基板，框架和盖子的阵列。 大晶片以夹层结构结合在一起，然后被切割以产生各个扫描模块。 模块可提供一维扫描或二维扫描。

    Optical scanner having a reflected light collector including holographic optical elements
    99.
    发明授权
    Optical scanner having a reflected light collector including holographic optical elements 失效
    具有包括全息光学元件的反射光收集器的光学扫描器

    公开(公告)号：US6029893A

    公开(公告)日：2000-02-29

    申请号：US876681

    申请日：1997-06-17

    Applicant: Chinh Tan ,  Yajun Li ,  Miklos Stern

    Inventor： Chinh Tan ,  Yajun Li ,  Miklos Stern

    IPC: G06K7/10

    CPC classification number: G06K7/10742 ,  G06K7/10702

    Abstract: An optical scanner such as a bar code scanner has a window comprising a holographic optical element through which both the outgoing scanning beam and the returned reflective light passes. The frequency distribution of the element may be chosen to achieve certain desirable characteristics, for example the removal of the dead zone immediately in front of the scanner and control of the beam profile and field of view. The element may be divided up into several separate zones or regions one of which is adapted to control the outgoing beam and the other of which is adapted to receive the incoming reflected light and to focus it onto a photodetector.

    Abstract translation: 诸如条形码扫描器的光学扫描仪具有包括全息光学元件的窗口，射出扫描光束和返回的反射光都通过该全息光学元件。 可以选择元件的频率分布以实现某些期望的特性，例如，立即在扫描仪前移除死区并控制光束轮廓和视场。 元件可以被分成几个单独的区域或区域，其中一个区域或区域适于控制输出光束，并且其中一个适于接收入射的反射光并将其聚焦到光电检测器上。

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