Holographic exposure system for computer generated holograms
US4960311A · kind A · utility
96Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A computer generated diffraction grating which exhibits multiple order scattering noise is illuminated by a point source to generate a first wavefront which is intersected with a second wavefront to form a desired interference pattern in a recording medium. The point source is moved relative to the recording medium during exposure in order to reduce multiple order scattering noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.