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US 10,094,661 B2Granted
Optical sensor and optical sensor system
AssigneePixart Imaging Inc.
InventorsEn-Feng Hsu, Chia-Yu Liu
Life of this patent
Estimating the term…
Abstract
An optical sensor includes at least two optical sensing pixels and at least two different grating elements. These grating elements are disposed above these optical sensing pixels correspondingly.
Claims14
An optical sensor system, comprising:
- two optical sensing pixels;
- two grating elements having a phase shift from each other and respectively above the two optical sensing pixels, wherein the two grating elements are respectively formed by two metal layers one over the other, and said two metal layers are arranged with an inclined angle with respect to the two optical sensing pixels;
- and
- a processor configured to
- identify an incident light angle according to intensity signals of the two optical sensing pixels,
- calculate, using a predetermined algorithm, at least one intensity parameter according to two intensity signals of the two optical sensing pixels, and
- perform gesture recognition according to an intensity variation of a plurality of intensity parameters of the at least one intensity parameter varied with time.
4 more elements
An optical sensor, comprising:
- two optical sensing pixels;
- two grating elements having a phase shift from each other and respectively above the two optical sensing pixels, wherein the two grating elements are respectively formed by at least two metal layers, and said at least two metal layers are arranged with an inclined angle with respect to the two optical sensing pixels;
- and
- a processor configured to
- calculate, using a predetermined algorithm, at least one intensity parameter according to two intensity signals of the two optical sensing pixels, and
- perform gesture recognition according to an intensity variation of a plurality of intensity parameters of the at least one intensity parameter varied with time.
3 more elements
An optical sensor system, comprising:
- at least two optical sensing pixels arranged in an array;
- at least two grating elements having a phase shift from each other and respectively above the at least two optical sensing pixels, wherein the at least two grating elements are respectively formed by two metal layers one over the other, and said two metal layers have metal lines extending in a direction different from a column direction and a row direction of the array of the at least two optical sensing pixels;
- and
- a processor configured to
- identify an incident light angle according to intensity signals of the at least two optical sensing pixels,
- calculate, using a predetermined algorithm, at least one intensity parameter according to intensity signals of the at least two optical sensing pixels, and
- perform gesture recognition according to an intensity variation of a plurality of intensity parameters of the at least one intensity parameter varied with time.
4 more elements
Dependencies are inferred from the claim text.