Optical input using internal reflection surfaces
US8810515B2 · kind B2 · utility
1Cited by
6References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 2010 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04109
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical navigation device for a computer application includes a radiation source capable of producing a beam of radiation, a sensor for receiving an image, and an optical element for identifying movement of the feature to thereby enable a computer action to be carried out. The optical element is formed from a single piece and includes at least one frustrated total internal reflection (F-TIR) surface capable of affecting frustrated total internal reflection of the beam of radiation in the presence of the feature to thereby generate the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.