Telescope having mechanism for automatically returning optical system to a reference dioptric power
US5610761A · kind A · utility
103Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1994 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A focusing lens for adjusting the dioptric power in accordance with the user's dioptric power is provided in each of right and left lens barrels. When a main switch dial is set at a normal position, a microcomputer sets the focusing lens at a dioptric power of 0 by controlling a motor so that the focusing lens moves to a position corresponding to a dioptric power of 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.