SOLID STATE IMAGE SENSOR AND MANUFACTURING METHOD THEREOF
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United States of America Patent
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Issued Date -
Aug 1, 2013
app pub date -
Jan 24, 2013
filing date -
Feb 1, 2012
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Abandoned
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Abstract
An image sensor is formed by a pixel array and a microlens array. One microlens is associated with each pixel. The microlens is positioned in a manner that is offset from a center of its associated pixel. The positioning offset for the microlens is a combination of a first offset determined as a function of the pixel's position relative to a center of the image sensor and a second offset that is randomly selected (both in terms of distance and radial direction). The random offset provides the effect that the spatial frequency information from the shifted microlens array is randomly distributed so as to provide different spatial frequencies and effectively cancel out Moiré interference.
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