Focus compensating lens for use in extreme temperatures
US5225928A · kind A · utility
22Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Oct 7, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A focus compensating lens structure wherein a lens means for collimating laser light produced by a source has an index of refraction which varies with temperature and wavelength to compensate for temperature effects on the wavelength of light produced by the laser source and the length of the mounting on which the source and lens are disposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.