Lighting device and projection system with the lighting device

Abstract

A lighting system comprising: at least one light emitting device for emitting light beams of different wavelengths; a focusing lens for converging the light beams emitted from the light emitting device; A waveguide of a surface on which a light beam focused by a focusing lens is incident. A projection system comprising: at least one light emitting device for emitting light beams of different wavelengths; a focusing lens for converging the light beams emitted from the light emitting device; a waveguide having an incident surface inclined at a predetermined angle A tube on which the light beam is condensed by a focusing lens; a display device for processing the light beam passing through the waveguide to form an image according to an input image signal; and a display device for magnifying the image formed by the display device and projecting the magnified image toward a screen projection lens components.

Description

technical field [0001] The present invention relates to an illumination system and a projection system using the system, more particularly, to an illumination system capable of producing color images without a color wheel, and a projection system using the system. Background technique [0002] see figure 1 , the usual projection system includes a light source 100, a first conversion (relay) lens 102 for converging the light beam emitted from the light source 100, a color wheel 105 for splitting the incident light beam into R, G and B colored light beams , the fly-eye lens 107 for making the light beam passing through the color wheel 105 uniform, the second conversion lens 110 for converging the light beam passing through the fly-eye lens 107, and making the R, G, and B colors sequentially input through the color wheel 105 The light beams form a display device 112 that forms a color image, and a projection lens system 115 projects the image formed by the display device 112 o...

AI Technical Summary

Problems solved by technology

According to the response speed of the display device 112, during the rotation of the color wheel 105, the three colors are used sequentially one by one, resulting in the loss of 2 / 3 of the light

In addition, in order to better produce color, a gap is formed on the boundary portion between adjacent color filters, so there is also light loss on this portion

[0005] In addition, since the color wheel 105 rotates at a high speed, noise is generated

The mechanical movement of the drive motor also has a detrimental effect on stability

And due to the mechanical limitation of the driving motor, it is difficult to obtain a speed exceeding a certain value, and the phenomenon of color breakage will occur

In addition, since the unit price of the color wheel is high, the manufacturing cost increases

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