Patent ID: 11860006
Assignee: PIXART IMAGING INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. An optical detection system, comprising:
a marker product, comprising:
a substrate; and
at least one structural portion formed on the substrate, the structural portion having a first surface, a second surface and a dividing axis, the first surface and the second surface being connected with each other as a stepless camber, the first surface and the second surface being arranged on opposite sides of the dividing axis, wherein any of the first surface and the second surface are configured to reflect an optical detecting signal to an orientation away from the dividing axis; and

an optical encoding device disposed adjacent by the marker product and capable of being moved relative to the marker product, the optical encoding device comprising:
an optical projector configured to project the optical detecting signal onto the marker product; and
an optical encoder electrically connected with the optical projector and configured to receive an optical reflecting signal from the marker product and encode intensity variation of the optical reflecting signal into digital data, wherein order of decline and rise in intensity variation of the optical reflecting signal is analyzed to acquire the shifting direction;
wherein one variation changed from the decline to the rise and another intensity variation changed from the rise to the decline respectively represent different shifting directions of the structural portion.