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Method and apparatus for testing image sensors
 
   
Document Number
US Patent 7400389
Issued Date
July 15, 2008
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Abstract
Methods and apparatuses for testing image sensors are disclosed. Desirable apparatuses of the present invention include image sensor testing devices comprising a digital light projection system capable of projecting static or dynamic images onto an image sensing device under test and an image sensor signal detection means for analyzing the output of said image sensing device under test. The digital light projection system comprises a light source, collimating optics, a digital micromirror device, and focusing optics. Other desirable methods and apparatuses of the present invention include image sensor testing devices employing a digital light projection system capable of simultaneously testing a plurality of image sensors. According to the present invention, the light source is calibrated and converted to a desired test image by the digital micromirror device. The test image is then focused onto an image sensor, the output of which is read by a detector and correlated with the input digital test image.
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Number of Claims:
11
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Published
July 15, 2008
Application Number
11/528,279
Filed
September 28, 2006
US Classification
356/237.1   348/E17.002
Int'l Classification
G01N   21/00   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of prior application Ser. No. 10/645,620, filed on Aug. 22, 2003, now U.S. Pat. No. 7,136,157 the subject matter of which is incorporated in its entirety by reference herein.
USPTO Field of Search
356/237.1  
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