Display collimator system including a standby reticle arrangement
US4193666A · kind A · utility
14Cited by
10References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | May 12, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0169
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display collimator system comprising a cathode-ray tube for displaying electronically generated data and a standby reticle arrangement to be operated in case of failure of the tube. The standby reticle arrangement comprises at least a movable reticle produced statically by means of a plurality of n elements juxtaposed according the intended direction of shift, each element comprising a light source to represent, when supplied, a one and same common shape, and a supply control circuit having n switching positions to supply the n elements separately.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.