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    Optical information recording medium based on interference of converging spherical waves
    62.
    发明授权
    Optical information recording medium based on interference of converging spherical waves 有权
    基于会聚球面波的干涉光信息记录介质

    公开(公告)号：US07660227B2

    公开(公告)日：2010-02-09

    申请号：US12110245

    申请日：2008-04-25

    申请人： Emil Wolf ,  Yajun Li

    发明人： Emil Wolf ,  Yajun Li

    IPC分类号： G11B7/24

    CPC分类号： G11B7/24085

    摘要： An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: λ 2 ⁢ n ⁢ m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: nd = λ 2 ⁢ n ⁢ m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

    摘要翻译： 提供了一种改进的光可读信息记录介质，其包括具有凹坑和凹坑的光学数据存储结构，其中凹坑的深度约为：λ2 n m 1 + MT 2，其中λ是光的波长 用于读取信息记录介质，m是从由奇数整数组成的组中选择的干涉的顺序，MT是横向放大率，n是凹坑内的读取光所遇到的折射率。 本发明还提供一种改进的光学读取系统，其具有满足以下关系的参数：nd =λ2 n m 1 + MT 2，其中λ是用于读取信息记录介质的光的波长，m是干扰的顺序 从由奇数整数组成的组中选择，MT是横向放大率，n是凹坑内的读取光所遇到的折射率，d是凹坑的深度。

    Interference of converging spherical waves with application to the design of light-readable information? recording media and systems for reading such media
    63.
    发明申请
    Interference of converging spherical waves with application to the design of light-readable information? recording media and systems for reading such media 审中-公开

    公开(公告)号：US20060120261A1

    公开(公告)日：2006-06-08

    申请号：US11338000

    申请日：2006-01-23

    申请人： Emil Wolf ,  Yajun Li

    发明人： Emil Wolf ,  Yajun Li

    IPC分类号： G11B7/24

    CPC分类号： G11B7/24085

    摘要： An improved light-readable information recording medium is provided that comprises an optical data storage structure having lands and pits, in which the depth of the pits is about: λ 2 ⁢ n ⁢ m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MTT is the transverse magnification, and n is the refractive index encountered by the reading light inside the pits. The invention also provides an improved optical reading system with the parameters satisfying the relationship: n ⁢   ⁢ d ≃ λ 2 ⁢ m 1 + M T 2 , wherein λ is the wavelength of light used to read the information recording medium, m is the order of interference selected from a group consisting of odd integers, MT is the transverse magnification, n is the refractive index encountered by the reading light inside the pits, and d is the depth of the pits.

    Monitoring light beam position in electro-optical readers and image projectors
    64.
    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

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

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

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10702 ,  G06K7/10683

    摘要： 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.

    摘要翻译： 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。

    Optical scanner having a reflected light collector including holographic optical elements
    66.
    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

    申请人： Chinh Tan ,  Yajun Li ,  Miklos Stern

    发明人： Chinh Tan ,  Yajun Li ,  Miklos Stern

    IPC分类号： G06K7/10

    CPC分类号： G06K7/10742 ,  G06K7/10702

    摘要： 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.

    摘要翻译： 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。

    Hand-held bar code reader with single printed circuit board
    70.
    发明授权
    Hand-held bar code reader with single printed circuit board 有权

    公开(公告)号：US06817529B2

    公开(公告)日：2004-11-16

    申请号：US10603465

    申请日：2003-06-25

    申请人： Edward Barkan ,  Mark Drzymala ,  Yajun Li

    发明人： Edward Barkan ,  Mark Drzymala ,  Yajun Li

    IPC分类号： G06K710

    CPC分类号： G06K7/10653 ,  G06K7/10851 ,  G06K7/10881 ,  G06K7/1098

    摘要： A hand-held bar code reader including a housing bounding an interior, a window, a generally planar printed circuit board mounted in the interior, and an optical scanning assembly mounted on the board and including a scanner for directing a light beam through the window at an acute angle relative to the board. A scanning element of the reader is manufactured by spacing a first and second support element apart by a gap bounded by edges of the support elements; injection molding a curable, elastomeric material in flowable form over the edges and into the gap; and allowing the curable, elastomeric material to cure and bond to the edges, and form a flexible hinge in the gap for enabling movement of the support elements relative to one another both away from and toward a stable rest initial position.