公开(公告)号：EP2274710B1

公开(公告)日：2012-06-27

申请号：EP09741616.8

申请日：2009-05-08

申请人： Psion Inc.

发明人： VAN KERKHOVEN, Don ,  DEGUIRE, Pierre ,  XIE, Xinjun

IPC分类号： G06K9/22 ,  G03B13/18 ,  G03B15/02 ,  G06K9/18 ,  H04N5/335

CPC分类号： G03B13/18 ,  G06K7/10831 ,  G06K2207/1011 ,  H04N5/2251

摘要： An optical image reader is provided. The image reader includes, for example, a targeting system for an imager, which includes a light device having a plurality of light emitting diodes (LEDs), each for emitting light, and a device for shaping a single targeting light based on the outputs of the plurality of LEDs. The image reader includes, for example, an image system for capturing image of an indicia on an object, which includes a targeting light source for providing a targeting light to the indicia on the object; and an optical system for focusing reflection from the object, having a liquid focus lens element having a variable focus, and a controller for controlling the focus of the focus lens. The image reader includes, for example, a system for capturing an image of an indicia on an object, which includes an image sensor for sensing reflection from the object, and an ambient light sensor for sensing the reflection from the object prior to the sensing by the image sensor to calculate a first estimate for exposure of the image sensor.