Collimating compound catoptric immersion lens
US4770514A · kind A · utility
48Cited by
2References
7Claims
0Family size
Inventor
Key dates
| Filing date | Nov 21, 1986 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Nov 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B19/0076
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The lens includes a transparent body having a central section and a peripheral section. The central section has a surface with a truncated elliptical curvature. The peripheral section has an inner refracting surface and an outer reflecting surface. The inner refracting surface has a diverging truncated conical shape. The outer reflecting surface has a parabolic shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.