Reflecting telescope with correcting lens
US4571036A · kind A · utility
16Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Oct 15, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reflecting telescope is provided in which a meniscus lens corrects for coma of the primary parabolic reflecting mirror, and also for coma and spherical aberration of an eyepiece, when an eyepiece is used. The meniscus lens may be formed from a plano-concave lens and a plano-convex lens positioned with their planar sides mutually parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.