Illuminating member for reducing unified glare rating and lighting device using the same
US9759408B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jul 26, 2012 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Jul 26, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/0056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a lighting device capable of reducing UGR (Unified Glare Rating). in a illuminating member, reflection efficiency of light significantly scattering to the left and right among light applied to the air gap through the diffusion plate is increased using the adhesion material pattern layer of periphery surrounding an air gap, and simultaneously, the UGR may be reduced by removing the process disposing the pattern with a specific structure and increasing the process efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.