Light fixture with photosensor-activated adjustable louver assembly
US9797141B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Oct 21, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light fixture delivers light to an illuminated space. The light fixture includes a housing that defines a skylight aperture therethrough, and movable louver blades coupled within and spanning the skylight aperture. Open, the louver blades do not substantially block light through the skylight aperture; closed, the louver blades block substantially all light through the skylight aperture. In intermediate positions, the louver blades block a portion of light through the skylight aperture. The light fixture also includes a dimmable artificial light source, integrated with the housing and configured to project light toward the illuminated space; a light sensor; and a control unit that is integrated with the housing and communicatively coupled with the light sensor. The control unit receives a signal from the sensor, and controls position of the louver blades and brightness of the artificial light source, in response to at least the signal from the light sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.