Projection lens and system
US6185041A · kind A · utility
23Cited by
16References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Oct 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/7408
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Projection lenses and projection lens systems are telecentric between an illumination subsystem and a set of imagers. The lenses and systems can exhibit color fringing correction, uniform imager illumination, athermalization, and component articulation for improved imaging. The lenses and systems may be employed in display apparatuses, such as folded display apparatuses that have decreased footprint size, but long effective projection lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.