Holographic color filters for display applications, and operating method
US5764389A · kind A · utility
25Cited by
9References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Nov 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03H1/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A holographic optical filter separates broadband electromagnetic radiation into spectral components corresponding to different spectral regions and then images this radiation onto pixels of a display. It includes two layers of holographic optical elements that are sensitive to each of these spectral regions. The holographic optical elements generally transmit radiation outside of their bandpass but can diffract radiation falling within it. The filter is well suited for display applications and can be used in either a reflective or transmissive mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.