Lighting apparatus for display illumination
US10187954B2 · kind B2 · utility
1Cited by
3References
7Claims
0Family size
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Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Nov 8, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting apparatus includes a light emitter that emits a first illumination light as a display illumination light. The optical characteristics of the first illumination light are: a correlated color temperature in a range from 3800 K to 6500 K, inclusive; chromaticity deviation Duv in a range from −9 to 0, inclusive; and an intrinsic photosensitive retinal ganglion cell (ipRGC) stimulus level of at least 0.6, the ipRGC stimulus level being a value standardized by setting an ipRGC stimulus level of light emitted from a D65 light source to 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.