Collimator for binocular viewing system
US5223974A · kind A · utility
11Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1992 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Jul 16, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/30
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an improved collimator assembly that includes two separate optical paths. Each optical path passes through a corrector lens arrangement substantially centered and aligned with one of two eyepiece lens assemblies. Each corrector lens arrangement is constructed so as to selectively refract light passing through it, in such a manner so as to counteract and reduce the axial chromatic aberrations that occur in the eyepiece lens assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.