Method and apparatus for testing image sensors
First Claim
1. An apparatus for testing image sensors, said apparatus comprising:
- a digital light processing control system capable of generating digital test images and directing said images onto at least one image sensor; and
an image sensor signal detector.
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Accused Products
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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Citations
39 Claims
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1. An apparatus for testing image sensors, said apparatus comprising:
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a digital light processing control system capable of generating digital test images and directing said images onto at least one image sensor; and
an image sensor signal detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for simultaneously testing a plurality of image sensors, said apparatus comprising:
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a digital light processing control system capable of generating digital test images and simultaneously directing said images onto a plurality of image sensors; and
an image sensor signal detector. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for automated image sensor testing, said apparatus comprising:
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a digital light processing control system comprising;
a light source;
a digital micromirror device, for converting light from said light source into at least one of a static and dynamic digital test image;
collimating optics, for directing light from said light source onto said digital micromirror device; and
focusing optics, for focusing said digital test images onto an image sensor device under test;
an image sensor signal detector comprising;
an input means, for inputting a continuous signal from an image sensor device under test; and
a means for automatically comparing said signal from an image sensor device under test to said test images inputted by said digital light processing control system. - View Dependent Claims (19, 20, 21)
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22. A method of testing image sensors comprising:
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generating a digital test image;
applying said digital image to at least one image sensor;
inputting a first signal from said image sensor; and
correlating said digital test image to said first signal from said image sensor. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of simultaneously testing a plurality of image sensors comprising:
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generating a plurality of digital test images using a digital light processing control system;
applying said digital images to a plurality of image sensors;
inputting a plurality of signals from said image sensors; and
correlating said input digital test images to said input signals from said image sensors. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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Specification