Pancake window display system employing one or more switchable holographic optical elements
US6661495B1 · kind B1 · utility
71Cited by
119References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13342
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical system including one or more switchable holographic optical elements is described for use with a pancake window display system. Each of the switchable holographic optical elements of the optical system operates between active and inactive states in accordance with control signals provided by a control logic circuit. In the active state, each switchable holographic optical element operates to reflect and collimate a narrow band of incident light thereon. In the inactive state, the switchable holographic optical element operates to transmit a substantial portion of light thereon without substantial alteration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.