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

Claim 0:
1. A marker product applied to an optical encoding device, the 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 projected from the optical encoding device to an orientation away from the dividing axis for generating an optical reflecting signal, and 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.