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Optical gesture sensor having a light modifying structure

  • US 10,429,236 B2
  • Filed: 03/21/2014
  • Issued: 10/01/2019
  • Est. Priority Date: 05/05/2011
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a segmented photo sensor comprising a plurality of segments, each of the plurality of segments being configured to detect light and to output time dependent signals in response thereto;

    a first light modifying structure disposed adjacent to a first one of the plurality of segments of the segmented photo sensor and configured to selectively block a portion of the light with respect to the first one of the plurality of segments and to influence how the light is directed to the first one of the plurality of segments, the first light modifying structure comprising a plurality of layers offset in a stair-step fashion with respect to a center axis defined perpendicular to a surface of the first one of the plurality of segments; and

    a second light modifying structure disposed adjacent to a second one of the plurality of segments of the segmented photo sensor structure and configured to selectively block a portion of the light with respect to the second one of the plurality of segments and to influence how the light is directed to the second one of the plurality of segments, the second light modifying structure comprising a plurality of layers offset in a stair-step fashion with respect to a center axis defined perpendicular to a surface of the second one of the plurality of segments, wherein the first one of the plurality of segments and the associated first light modifying structure faces a first direction and the second one of the plurality of segments and the associated second light modifying structure faces a second direction, the first direction being different from the second direction such that the first one of the plurality of segments has a field of view that is different than the second one of the plurality of segments.

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