Hologram manufacturing method and apparatus
US5502581A · kind A · utility
10Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Nov 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H2240/51
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A hologram manufacturing apparatus and a hologram manufacturing method for manufacturing a hologram optical device by a split exposure method are disclosed. The manufacturing apparatus comprises light shield means having a spatial light modulator having a light transparent area and a light non-transparent area thereof controlled corresponding to an input signal, and drive means for driving the spatial light modulator by supplying the signal to the spatial light modulator. The light shield means is arranged closely to a photosensitive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.