Color control in holograms
US4685768A · kind A · utility
1Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Nov 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Color control in a Denisyuk type hologram having interference fringes lying generally parallel to the substrate is effected by subjecting the initially produced hologram to resensitizing, controlled re-exposure, second development and second bleaching steps, of which the effect is to remove silver produced by the second exposure so as to enable the playback interference fringes to move closer together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.