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Light source apparatus

A light source device, laser technology, applied in the direction of light source, light source fixing, projection device, etc.

Active Publication Date: 2016-10-12
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as described in Patent Document 1, the phosphor element has a problem of light saturation

Method used

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  • Light source apparatus
  • Light source apparatus
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0048]

[0049] figure 1 It is a configuration diagram schematically showing the main configuration of the projection display device 1 according to Embodiment 1 of the present invention. Such as figure 1 As shown, the projection display device 1 has a light source device 2 , a light intensity equalizing element 113 , an illumination optical system, a light valve 121 and a projection optical system 124 . Furthermore, the projection display device 1 may have a converging optical system 80 .

[0050] The illumination optics can have a relay lens group 115 , a deflecting mirror 120 or a converging lens 122 . The relay lens group 115 can have, for example, a meniscus lens (meniscus lens) 116 , a convex lens 117 or a biconvex lens 118 . The converging optical system 80 may have, for example, a convex lens 81 or a meniscus lens (meniscus lens) 82 .

[0051] The light source device 2 may include the first excitation light source unit 10 a, the second excitation light source unit...

Embodiment approach 2

[0469] Figure 19 It is a configuration diagram schematically showing the main configuration of a light source device 1001 according to Embodiment 2 of the present invention. Embodiment 2 differs from Embodiment 1 in that it has rotating phosphor elements 41G and 42G, a parallelizing lens group 501 , and a converging lens group 502 . Components that are the same as those of the projection display device 1 described in Embodiment 1 are given the same reference numerals and description thereof will be omitted.

[0470] The same constituent elements as in Embodiment 1 are the first excitation light source unit 10a, the second excitation light source unit 10b, the light synthesis element 70, the lenticular lens 101, the biconcave lens 102, the deflection mirror 71, the color separation filter 72, and the color separation filter 73. , the converging lens group 400 (convex lens 401 and aspherical convex lens 402), the blue light source unit 20B, the red light source unit 30R and th...

Embodiment approach 3

[0534] Figure 23 It is a configuration diagram schematically showing the main configuration of a light source device 1002 according to Embodiment 3 of the present invention.

[0535] In the third embodiment, the characteristics of the color separation filter 136 are different from those in the first embodiment. The color separation filter 136 corresponds to the color separation filter 73 in the first embodiment. Furthermore, the optical paths of the light emitted from the blue light source unit 20B and the light emitted from the red light source unit 30R are different from Embodiment 1. FIG.

[0536]Furthermore, in Embodiment 1, the red light beam and the blue light beam are output as parallel light beams through the lens groups 200 and 300 . However, in Embodiment 3, the red light beam and the blue light beam are emitted as converged light beams through the convex lenses 131B and 131R.

[0537] Components that are the same as those of the projection display device 1 descr...

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Abstract

A light source apparatus (2) is provided with a light-synthesizing element (70) and a phosphor element (40G). The light-synthesizing element (70) transmits a first excitation light and reflects a second excitation light. The phosphor element (40G) receives the first excitation light and the second excitation light and emits fluorescence. The emission angle of the first excitation light emitted from the light-synthesizing element (70) and the reflection angle of the second excitation light reflected by the light-synthesizing element (70) differ, causing the position (400a) on the phosphor element (40G) reached by the first excitation light that has been transmitted by the light-synthesizing element (70) to differ from the position (400b) on the phosphor element (40G) reached by the second excitation light reflected by the light-synthesizing element (70).

Description

technical field [0001] The present invention relates to a light source device including a plurality of light sources that generate excitation light and phosphors that absorb the energy of the excitation light and emit fluorescence. Background technique [0002] For example, there is a projection display device as a device using a light source device. A projection display device has a light source system, an illumination optical system, and a projection optical system. "Light source system" means, for example, a light source system (system). "System" refers to a unity or combination in which individual elements interact and function as a whole. That is, the light source system is a system including a light emitting element that emits light, an optical element, and the like. The light source system emits projection light. The illumination optics guide the light emitted from the light source system to the light valve. The light valve receives video signals and outputs imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/208F21V3/00F21V5/04F21V7/00F21V9/08F21V13/14F21V17/02F21V23/003F21Y2115/30G02B27/141G03B21/2013G03B21/204G03B21/2066
Inventor 山田旭洋小林信高柳生伸二
Owner MITSUBISHI ELECTRIC CORP