公开(公告)号：EP2162790B1

公开(公告)日：2015-09-09

申请号：EP08772115.5

申请日：2008-06-27

申请人： Quality Vision International Inc.

发明人： POLIDOR, Edward, T. ,  JACKSON, Robert, L.

IPC分类号： G03B13/36 ,  G02B7/32 ,  G02B7/38 ,  H04N5/232

CPC分类号： G03B13/36 ,  G02B7/32 ,  G02B7/38 ,  H04N5/23212

公开(公告)号：EP2162790A1

公开(公告)日：2010-03-17

申请号：EP08772115.5

申请日：2008-06-27

申请人： Quality Vision International Inc.

发明人： POLIDOR, Edward, T. ,  JACKSON, Robert, L.

IPC分类号： G03B13/36

CPC分类号： G03B13/36 ,  G02B7/32 ,  G02B7/38 ,  H04N5/23212

摘要： An improved autofocus system and method that includes a controllable light source having at least two selectively activated substantially monochromatic output wavelengths adapted for illuminating an object; a camera receiving light from said light source reflected from a portion of said object and generating output signals responsive to said received light; a controller connected to said camera and said controllable light source for positioning said camera and sequentially illuminating a first portion of the object with at least two selectively activated substantially monochromatic output wavelengths, moving the camera to a second position and sequentially illuminating a second portion of the object with at least two selectively activated substantially monochromatic output wavelengths; and a data processor connected to said camera and receiving said output signals and for each portion, comparing the output signals associated with each wavelength and determining a focus parameter from said comparison.