Light pipe for an optical mouse
US4716287A · kind A · utility
8Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Sep 6, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0317
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A light pipe for use in an optical mouse comprises a block of light transmitting fibers comprising a plurality of parallel light transmissive regular polygonal fiber cores each surrounded by light transmissive cladding having a lower index of refraction than the core. The ratio of the width of the core to the thickness of the cladding ranges from 4 to 24.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.