Compensation of optical aberrations caused by non-planar windows
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United States of America Patent
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May 30, 2017
Grant Date -
Oct 2, 2014
app pub date -
Mar 26, 2013
filing date -
Mar 26, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
The specification and drawings present a new apparatus and a new apparatus for compensation of the optical aberrations caused by a non-planar window (or windows in general, for example windows having a curved surface) using a diffractive (optical) element such as a diffractive foil in electronic/camera devices such as electronic devices with displays. According to an embodiment, an optical window of an electronic device/camera may have at least a non-planar front surface which causes an aberration of an input image. This aberration can be corrected to be below predefined one or more parameters (such as a circle with a predefined maximum radius and/or a directional shift by a predefined maximum value) using a diffractive element/foil located on/near a back surface of the optical window or between the back surface of the optical window and a sensor/camera image plane where the input image is focused on.
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