Wide angle lens for the infrared dedicatory clause
US4542954A · kind A · utility
3Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1983 |
| Grant date | Sep 24, 1985 |
| Priority date | — |
| Expiry date | Nov 10, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B9/62
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This rotationally symmetric optical sensor consists of six lens elements e selectively of the alkali halide materials KBr, C I, and KI. It has a wide field-of-view coverage of 60 degrees and operates in the middle infrared through the far infrared bands and extends well into the extreme infrared band. The combination of optical materials selected to be used effectively corrects the chromatic and monochromatic aberrations of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.