Optical navigation system and method of estimating motion with optical lift detection
First Claim
Patent Images
1. A method of estimating motion comprising:
- generating light;
separating said light into first and second portions of said light;
directing said first portion of said light toward a first region of a target surface;
receiving said first portion of said light reflected from said first region of said target surface at an image sensor for motion estimation;
directing said second portion of said light toward a second region of said target surface through an aperture positioned over said target surface, said first and second regions being different regions of said target surface;
directing said second portion of said light reflected from said second region of said target surface and transmitted back through said aperture toward a photodetector; and
receiving said second portion of said light at said photodetector for lift detection.
8 Assignments
0 Petitions
Accused Products
Abstract
An optical navigation system and method of estimating motion uses a plate with an aperture, a photodetector and an optical system for optical lift detection. The optical system is configured to direct an input light to a target surface through the aperture of the plate and to direct the input light reflected from the target surface and transmitted back through the aperture of the plate toward the photodetector to be detected by the photodetector for lift detection.
-
Citations
10 Claims
-
1. A method of estimating motion comprising:
-
generating light; separating said light into first and second portions of said light; directing said first portion of said light toward a first region of a target surface; receiving said first portion of said light reflected from said first region of said target surface at an image sensor for motion estimation; directing said second portion of said light toward a second region of said target surface through an aperture positioned over said target surface, said first and second regions being different regions of said target surface; directing said second portion of said light reflected from said second region of said target surface and transmitted back through said aperture toward a photodetector; and receiving said second portion of said light at said photodetector for lift detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification