US 2006/0139916 A1 · Lighting system of adjustable color temperature

Abstract

A lighting system capable of adjusting color temperature is provided. The lighting system mainly comprises a light source module and a mixing assembly. The light source module produces red-color, blue-color, and green-color lights so as to control the color temperature of a white light resulted from mixing the color lights. The mixing assembly is located at a side of the light source module and comprises a first, a second, and a third mixing device sequentially arranged along the light transmission path. The function of the first and third mixing devices is for light mixing by causing the lights to undergo multiple internal reflections. The second mixing device directs the lights passing through the first mixing device in a reverse direction (180 degrees) and enters into the third mixing device. The present invention utilizes the light source module to adjust the proportions of the three color lights and the mixing assembly to achieve a uniform mixing by multiple reflections. The resulting white light therefore has an adjustable color temperature and the overall dimension of the lighting system can be reduced.

Claims12

Dependent claims

A lighting system capable of adjusting color temperature, comprising:

a light source module capable of producing red-color, blue-color, and green-color lights so as to control a color temperature of a white light resulted from mixing said color lights;
and
a mixing assembly located at a side of said light source module producing a white light with a required color temperature by uniformly mixing said color lights after causing said color lights to undergo a plurality of reflections within said mixing assembly, said mixing assembly comprising:
a first mixing device accepting said color lights from said light source module and causing said color lights to undergo a plurality of reflections before entering a second mixing device,
a second mixing device accepting said color lights from said first mixing device and altering said color lights' paths to enter a third mixing device by causing said color lights to undergo a plurality of reflections, and
a third mixing device accepting said color lights from said second mixing device and output said color lights after causing said color lights to undergo a plurality of reflections.

3 more elements

Dependencies are inferred from the claim text.

Lighting system of adjustable color temperature

Life of this patent

Lighting system of adjustable color temperature

Life of this patent

Abstract

Claims12