Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 24, 2019
Patent Application Number
15855122
Date Filed
December 27, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
An optical fingerprint sensor, includes: an image sensor array; a collimator layer disposed above the image sensor array, the collimator array having an array of first apertures; a light guiding layer disposed on the collimator layer; a light source emitting light into the light guiding layer; and a sensing area disposed above the light guiding layer. The light guiding layer allows a portion of the light from the light source to enter to the sensing area while directing the remaining portion of the light forward.
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