Patent · US Active

White LED lighting device and a lighting appliance

US9920906B2 · kind B2 · utility

0Cited by

11References

12Claims

0Family size

Assignee

MAQUET SAS · FR

Inventors

Robin Jousse · La Chapelle-Saint-Mesmin, FR
Cécilia Valteau · Olivet, FR
Lionel Comte · La Chapelle-Saint-Mesmin, FR

Key dates

Filing date	Mar 11, 2013
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Dec 26, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF21Y2115/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An LED lighting device (6) having an LED (8) emitting white light and optical filter means (12) suitable for filtering the white light emitted by the LED (8). The optical filter means comprise at least two optical filters (12) that have different transmission coefficients and that are positionable to filter the light emitted by the LED (8) individually. The lighting device (6) includes a power supply unit (10) suitable for delivering different power supply currents to the LED (8) depending on whether one or the other of the optical filters (12) is positioned to filter the light from the LED (8), so as to modify the color temperature of the light emitted by the LED (8).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.