| 摘要 |
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for providing a gesture-responsive user interface for an electronic device. In one aspect, an apparatus or electronic device has an interactive display that provides an input/output (I/O) interface to a user of the apparatus. The apparatus includes a processor, a light emitting source and at least two light sensors. A secondary optical lens structures emitted light from the light emitting source into at least one lobe. Each light sensor outputs, to the processor, a signal representative of a characteristic of received light, where the received light results from scattering of the structured emitted light by an object. The processor effectuates the I/O interface by recognizing, from the output of the light sensors, an instance of a user gesture, and to control the interactive display and/or the apparatus in response to the user gesture.
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