Method for constructing holograms
US4904033A · kind A · utility
12Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | May 18, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for constructing a hologram by use of a master hologram which includes a predetermined pattern of interference fringes formed thereon by optical interference of a plurality of constructing coherent light beams incident at different angles. The method includes preparing a photosensitive medium, in which the hologram is to be formed, on the master hologram, and copying the master hologram onto the photo-sensitive medium by impinging copying light beams onto the master hologram at an incident angle different from the angles of the constructing beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.