Light source following optical system for hologram illumination
US6407832B1 · kind B1 · utility
7Cited by
8References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Feb 7, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2227/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for illumination of a hologram includes a deflection mirror to direct light from a moving light source to illuminate the hologram, and a heliostat for tracking the moving light source and positioning the deflection mirror to direct light therefrom to illuminate the hologram. Such as system is optimized for illuminating outdoor holographic displays while still providing a desirable light source and illumination angle, and doing so efficiently and at low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.