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Laser light source device

A laser light source and light source technology, applied in the field of projection display, can solve the problems of reducing brightness, increasing the difficulty and consumption of the second color wheel, and achieving the effect of easy implementation, reducing further consumption and improving picture quality

Active Publication Date: 2017-02-22
IVIEW DISPLAY SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The three primary colors produced by the two-color wheel laser light source in the prior art must be filtered by the second color wheel, which not only increases the difficulty of realizing the second color wheel, but also further consumes the light passing through the transparent area of ​​the second color wheel. thereby reducing its brightness

Method used

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  • Laser light source device
  • Laser light source device
  • Laser light source device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The laser light source device of the present embodiment of the present invention includes a light source exciter 10 for emitting a laser light source of at least one color; an optical path integration unit 20 and a first color wheel 50 arranged in front of the light path of the light source exciter for integrating the laser light source , the second color wheel 60, the first optical path guiding unit 30 for guiding the light source, the first collimating lens group 41, the second collimating lens group 42, the first relay lens group 43, the second relay lens group 44 , the second reflector 23, the third reflector 45, and the light source receiving unit 46 for combining the light rays transmitted and reflected by the first color wheel and the second color wheel and other components, the first color wheel 50 is opposite to the second The color wheels 60 are placed in parallel.

[0029] Such as figure 2 As shown, the light source exciter 10 in this embodiment generates b...

Embodiment 2

[0041] image 3 It is a schematic structural diagram of Embodiment 2 of the present invention. The difference between this embodiment and Embodiment 1 is that the first color wheel 70 of this embodiment is perpendicular to the second color wheel 80, and at the same time guides the second optical path The relay lens and reflector of 90 have been increased or decreased.

Embodiment 3

[0043] The difference between this embodiment and the first embodiment is that, if Figure 4 As shown, the first color wheel 71 of this embodiment is a transmission type, that is, in this embodiment, the yellow fluorescent area 52 is a transmission area that can transmit light. When the blue laser light passes through the yellow fluorescent area 52 of the first color wheel 71, the excited yellow light directly passes through the yellow fluorescent area 52 of the first color wheel 71, reaches the second reflector 24, and reaches the second color through transmission. wheel; when the blue laser light passes through the blue light-transmitting area 51 of the first color wheel 71 and reaches the second reflector 24 , it is reflected and reaches the third optical path guiding unit 31 .

[0044] Wherein, the second reflecting mirror 24 may be a dichroic film, which allows the reflection of blue laser light and the transmission of yellow light through coating.

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Abstract

The invention provides a laser light source device, which comprises a light source exciter, a light path integration unit, a first color wheel having a light-transmitting area and a fluorescence area, a second color wheel having two kinds of color light filter areas in alternative distribution, an optical path guidance unit for guiding an excitation light source, a relay lens group, a collimating lens group, a reflector and a light source reception unit. Consumption of the light source is reduced through the optical path guidance unit, and brightness is improved, thereby improving image quality; and the structure makes the color wheels easier to realize.

Description

technical field [0001] The invention relates to the technical field of projection display, in particular to a laser light source device. Background technique [0002] Laser light source is an electric light source that uses excited particles to emit light under the action of stimulated radiation. It has the characteristics of good monochromaticity, strong directionality and high brightness, and is widely used in projection light sources. [0003] At present, the existing laser light source in the industry will use the first color wheel to generate fluorescence other than the laser color, and generate other colors by exciting the second color wheel and transmit the fluorescence generated by the first color wheel, and the final sequential output is of high purity. The three primary colors are used as the light source with higher brightness of the picture. The three primary colors produced by the two-color wheel laser light source in the prior art must be filtered by the secon...

Claims

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Application Information

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IPC IPC(8): G03B21/20G02B26/00
CPCG02B26/008G03B21/204
Inventor 高志强杨伟樑赵远宁曼莹
Owner IVIEW DISPLAY SHENZHEN CO LTD
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