US 2013/0271012 A1Published application

Illumination system

AssigneeLextar Electronics Corporation

InventorEn-Min WU

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Abstract

An illumination system includes a light module, a power module, a driver module, a light sensor module, and a control module. The power module is coupled to an input power source. The power module converts the input power source and outputs a direct voltage. The driver module, coupled between the light module and the power module, converts the direct voltage into a driving voltage and then outputs a driving current to drive the light module. The light sensor module senses an environment brightness and outputs a brightness signal. The control module receives the brightness signal and outputs a light modulation signal to the driver module, wherein the driver module controls the activation time of the light module according to the light modulation signal.

Claims10

Dependent claims

An illumination system, comprising:

a light source module;
a power module coupled to an input power source, wherein the power module converts and outputs a direct voltage from the input power source;
a driver module coupled between the light source module and the power module, wherein the driver module receives and converts the direct voltage from the power module into a driving voltage and outputs a driving current to drive the light source module;
a light sensor module for sensing an environment brightness and outputting an environment brightness signal;
and
a control module coupled respectively to the power module, the light sensor module, and the driver module;
wherein the control module outputs a light modulation signal to the driver module after receiving the environment brightness signal, and the driver module controls an activation time of the light source module according to the light modulation signal.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/712,555Filed 12 Dec 2012
Priority: TW 10111363917 Apr 2012
Published: 17 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H05B 31/50
Having more than two electrodes: specially adapted for AC
H05B 45/385
Switched mode power supply [SMPS]: using flyback topology
H05B 47/10
Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant: controlling the light source
H05B 47/11
In response to determined parameters: by determining the brightness or colour temperature of ambient light

Family

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