Lighting apparatus for a portable computer with illumination apertures
US5815225A · kind A · utility
283Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Jan 22, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/1637
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A lap top computer system is provided having a light emitting device for illuminating a keyboard, and the surrounding work area. The apparatus operates to convey light from the liquid crystal display backlighting light source to the keyboard and work area utilizing light pipes. The light pipes transmit light from the backlighting system light source to lenses located on a surface of the computer body. The lenses are provided with adjustable doors covering the light source for varying the level of illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.