Optical fingerprint recognition apparatus
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United States of America Patent
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Jul 26, 2016
Grant Date -
Jan 22, 2015
app pub date -
Dec 24, 2013
filing date -
Jul 19, 2013
priority date (Note) -
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Abstract
In accordance with an embodiment, the prism is made slimly to correct the distortion of the fingerprint image such as trapezoidal distortion or the like. Therefore, it is possible to manufacture the optical fingerprint recognition apparatus of a compact size. Further, the imaging lens is arranged to have a de-centering amount and/or a tilt angle with respect to the optical axis, which leads to an effect to implement resolution approaching the diffraction limit.
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