公开(公告)号：WO2005010802A3

公开(公告)日：2005-03-10

申请号：PCT/US2004023022

申请日：2004-07-16

Applicant: SYMBOL TECHNOLOGIES INC ,  KRICHEVER MARK

Inventor： KRICHEVER MARK

IPC: G02B7/28 ,  G06K7/10 ,  G02B21/24

CPC classification number: G02B7/285 ,  G06K7/10722 ,  G06K7/10811

Abstract: A non-parallax optical auto-focusing system focuses an image and determines a distance to an optical target without being prone to errors due to parallax. The system includes a first beam splitter, a second beam splitter, and a lens positioned therebetween on an optical axis. An aiming beam is directed towards an optical target and the redirected reflected beam is received by a quadrant sensor assembly for generating an output signal indicative of a parameter of the redirected reflected aiming beam. A processor receives the output signal and generates a control signal for actuating an actuator to reposition the lens. The system continues to position the lens until the measured parameter is within a predetermined range for optimally focusing the optical target on an image sensor. The distance to the optical target is determined by using a look-up table to correlate the measured parameter to the distance to the optical target.

Abstract translation: 无视差光学自动对焦系统聚焦图像并确定到光学目标的距离，而不易由于视差而导致错误。 该系统包括第一分束器，第二分束器，以及位于其间的光轴上的透镜。 瞄准光束指向光学目标，并且重定向的反射光束由象限传感器组件接收，用于产生表示重定向的反射瞄准光束的参数的输出信号。 处理器接收输出信号并产生用于致动致动器以重新定位透镜的控制信号。 系统继续定位透镜，直到测量的参数在预定范围内，以最优地将光学目标聚焦在图像传感器上。 通过使用查找表来确定到光学目标的距离，以将测量的参数与到光学目标的距离相关联。

公开(公告)号：EP0731417A3

公开(公告)日：1998-10-21

申请号：EP96301314

申请日：1996-02-27

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： STERN MIKLOS ,  KATZ JOSEPH ,  CAMPANELLI JOSEPH ,  DVORKIS PAUL ,  METLITSKY BORIS ,  GUREVICH VLADIMIR ,  KRICHEVER MARK ,  MCGLYNN DANIEL R

IPC: G06K7/10 ,  H01S5/183 ,  H01S5/42

CPC classification number: G06K7/10742 ,  G06K7/10574 ,  G06K7/10643 ,  G06K7/10722 ,  G06K7/10811 ,  H01S5/423

Abstract: An integrated optical module for an optical scanner has a lens (24) spaced from a vertical-cavity surface-emitting laser (VCSEL) (28) by a spacer (62). The module, in an alternative embodiment, may include a wafer frame (12), a suspended mirror (14) mounted for oscillation on the frame, a wafer substrate (108) bonded beneath the frame and a wafer cover (109) bonded above the frame. The cover includes a mirror travel stop (116) to protect the mirror against shock. A VCSEL mounted to the wafer cover produces a beam which is shaped and deflected by a diffractive optical element (22,24) 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 (1100,1102,1104) 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.

公开(公告)号：EP0768614A3

公开(公告)日：1998-07-01

申请号：EP96307381

申请日：1996-10-10

Applicant: SYMBOL TECHNOLOGIES INC

Inventor： SHEPARD HOWARD ,  BARKAN EDWARD ,  DVORKIS PAUL ,  METLITSKY BORIS ,  BRIDGELALL RAJ ,  GUREVICH VLADIMIR ,  KRICHEVER MARK ,  LI YAJUN ,  KATZ JOSEPH ,  LUCIANO VINCENT

IPC: G06K7/10

CPC classification number: G06K7/10653 ,  G06K2207/1016

Abstract: An electro-optical, retroreflective scanning module has a base, a first circuit board, and a second circuit board mounted orthogonal to the first circuit board. The base supports a light emitter for producing a scanning beam. The beam reflects off a generally planar scan mirror affixed to a stationary concave collection mirror, to a reflector mounted on a drive for oscillation. A detector included in the module senses light reflected from an indicia scanned by the beam. The reflected light is reflected off the reflector and directed to the collection mirror before reaching the detector. The beam and the field of view of the detector are simultaneously scanned.