Speckle depixelator
US5945967A · kind A · utility
18Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1995 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Apr 21, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/48
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A depixelator for improving the image generated by a pixelated image generator, using a non-periodic optic element, is provided. By providing a non-periodic optic element, artifacts such as moire patterns generated by periodic devices such as crossed-gratings, can be reduced or eliminated. The optic device preferably includes a plurality of randomly spaced and/or sized dimples or specks for diffracting a substantial portion of light from pixels into interpixel regions, with the depth of the specks preferably smoothly varying across the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.