Patent · US Active

Light output device

US8382339B2 · kind B2 · utility

0Cited by

9References

16Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Maarten Marinus Johannes Wilhelmus Van Herpen · Heesch, NL
Roel Penterman · Tisselt, BE

Key dates

Filing date	Oct 30, 2008
Grant date	Feb 26, 2013
Priority date	—
Expiry date	Sep 25, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A light output device comprises at least one light source having a light source output comprising at least a light output, and a switchable member through which the light output is provided, and which is switchable between at least two optical states. These at least two optical states provide different levels of uniformity of the light output. The switching of the switchable member is induced by the light source output.

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