Waveguide illuminator having waveguide array
US11609370B2 · kind B2 · utility
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5References
20Claims
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Key dates
| Filing date | Sep 24, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Sep 24, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waveguide illuminator includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, causing each light beam portion to propagate through a corresponding pixel of the display panel, thereby improving efficiency of light utilization by the display panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.