Optical displacement module and method to reduce the size of an optical pointing device thereof
US7688309B2 · kind B2 · utility
8Cited by
11References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2004 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Jul 31, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical displacement system for an input device of a host device includes a substrate; an aperture; a light source and a sensor chip attached to the substrate, an illumination optics to direct the light emitted by the light source to a surface of an object. The sensor chip is configured to receive at least part of the light emitted by the light source after the light has been scattered/reflected on the surface of the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.