Light source device including a planar light source having a single, substantially continuous light emission area and display device incorporating the light source device
AssigneeSeiko Epson Corporation
InventorsOsamu Yokoyama, Tatsuya Shimoda, Satoru Miyashita
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Abstract
A red light source comprising an array of LEDs 102R that emit light of a red color, a green light source comprising an array of LEDs 102G that emit light of a green color, and a blue light source comprising an array of LEDs 102B that emit light of a blue color are deployed about the periphery of a dichroic prism 101. A liquid crystal display element is illuminated by a light source device configured such that the light from the respective light sources is synthesized into white light by the dichroic prism, and projection type liquid crystal display devices and the like are configured.
Claims20
A light source device, comprising:
- a first light source for emitting a first light;
- a second light source for emitting a second light;
- a third light source for emitting a third light;
- a first reflector disposed at the first light source;
- a second reflector disposed at the second light source;
- a third reflector disposed at the third light source;
- a first polarization converter for obtaining a first polarized light from the first light, the first polarization converter including a first polarizer through which the first polarized light is obtained and utilizing a first reflection light reflected by the first polarizer and the first reflector so as to obtain the first polarized light;
- a second polarization converter for obtaining a second polarized light from the second light, the second polarization converter including a second polarizer through which the second polarized light is obtained and utilizing a second reflection light reflected by the second polarizer and the second reflector so as to obtain the second polarized light;
- a third polarization converter for obtaining a third polarized light from the third light, the third polarization converter including a third polarizer through which the third polarized light is obtained and utilizing a third reflection light reflected by the third polarizer and the third reflector so as to obtain the third polarized light;
- and
- a color synthesizing optical system for synthesizing the first polarized light, the second polarized light and the third polarized light.
Dependencies are inferred from the claim text.