TIME-OF-FLIGHT SENSING SYSTEM AND TIME-OF-FLIGHT SENSING METHOD

Abstract: a time-of-flight sensing system including a first light source, a second light source, a sensing device and a filter layer is provided. the sensing device has a plurality of first sensing pixels and a plurality of second sensing pixels. the filter layer is disposed on a side of a light-receiving surface of the sensing device. the filter layer has a plurality of first filter patterns overlapping the first sensing pixels and a plurality of second filter patterns overlapping the second sensing pixels. the first light source and the second light source respectively and sequentially emit the first light beam having a first wavelength and the second light beam having a second wavelength toward a sensing target. the first sensing pixels and the second sensing pixels simultaneously and respectively sense the first light beam and the second light beam reflected from the sensing target. a time-of-flight sensing method is also provided.

Inventor(s): Hsueh-Tsung Lu, Wu-Feng Chen

CPC Classification: G01S17/894 (3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar)

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