Deriving a white-point for use in a multi-color light scene
US10674589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2016 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Dec 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When a light scene comprises multiple colors of light, not all white light is suitable for matching the scene. A method is provided such that a white point is determined for each color in a set of colors, to create a set of white points. A single white point is then determined based on the set of white points. This allows, for example, a user to select a light scene (e.g. a romantic scene featuring red colors) for a living room, such that lighting devices contributing to the scene emit colored light. A functional lighting device (e.g. reading light) can then emit white light, determined according to the method, to provide more functional light (e.g. light suitable for reading) that matches the scene (e.g. warm white instead of cold white).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.