Plane parallel optical collimating device employing a cholesteric liquid crystal
US5715023A · kind A · utility
87Cited by
13References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1996 |
| Grant date | Feb 3, 1998 |
| Priority date | — |
| Expiry date | Apr 30, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/343
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A compact lightweight display system which can be used as a collimating eyepiece is provided. The system utilizes a cholesteric liquid crystal device in combination with an optical doublet. A partially reflective coating is at the interface between the two singlets which comprise the doublet. The design of this system reduces the number of element to air and/or element to element interfaces, thus reducing losses and ghosting while making a sturdier, more vibration tolerant display system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.