Atmospheric dispersion corrector
US4405203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1980 |
| Grant date | Sep 20, 1983 |
| Priority date | — |
| Expiry date | Oct 8, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/1805
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An atmospheric dispersion corrector having a housing capable of mounting therein either a pair of single prisms or a pair of compound prisms which can be either rotated with respect to each other or rotated, as a unit, simultaneously with each other. The specific requirements for the prisms making up both the pair of single prisms or the pair of compound prisms permit the corrector to rotate the single prisms or compound prisms through a particular rotation angle with respect to a vertical plane at which atmospheric dispersion correction over a broad spectral bandpass range can be achieved. These specific requirements encompass not only particular prism angles but also specific glass types from which the prisms are manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.