OPTICAL GESTURE SENSOR HAVING A LIGHT MODIFYING STRUCTURE

摘要

A gesture sensing device includes a single light source and a multiple segmented single photo sensor, or an array of photo sensors, collectively referred to herein as segmented photo sensors. A light modifying structure relays reflected light from the light source onto different segments of the segmented photo sensors. The light modifying structure can be an optical lens structure or a mechanical structure. The different segments of the photo sensor sense reflected light and output corresponding sensed voltage signals. A control circuit receives and processes the sensed voltage signals to determine target motion relative to the segmented photo sensor.

主权项

1. A device comprising:
a plurality of light sensors configured to detect light and to output signals in response thereto; and light modifying wall structure disposed adjacent to the plurality of light sensors, the light modifying wall structure configured to selectively block a portion of the light reflected from the object depending on a position of the object relative to the light sensor assembly, the light modifying wall structure comprising a plurality of layers and a plurality of vias, respective ones of the plurality of layers and the plurality of vias offset in a stair-step fashion with respect to a center axis defined perpendicular to a surface of the light sensor assembly.