Light source device and projector

A light source device and technology of light source, applied in lighting devices, projection devices, components of lighting devices, etc., can solve the problems of large optical etendue, low output white light brightness, cost problems, etc.

Inactive Publication Date: 2014-12-10
HISENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large optical expansion of the light emitted by the LED, the brightness of the output white light is low, and the overall volume of the projection display product is large, which also brings cost problems.

Method used

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  • Light source device and projector
  • Light source device and projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The light source device includes a phosphor wheel and also includes a phosphor excitation light source;

[0039] The phosphor wheel is coated with green phosphors with different emission spectra in sections. The excitation light emitted by the phosphor excitation light source is irradiated on the rotating phosphor wheel, and the phosphors on the phosphor wheel emit light of corresponding wavelengths in turn. . Specifically, the fluorescent powder wheel is coated with phosphor powder corresponding to yellow-green emission spectrum and phosphor powder corresponding to dark green emission spectrum in segments.

example 1

[0041] Such as Figure 1a As shown, the excitation light emitted by the phosphor excitation light source 101 passes through the refracting lens group and the reflecting lens group 102 to form a parallel beam of excitation light, and the parallel beam of excitation light passes through the transmission of the first group of lenses 103, the first dichroic After the transmission of the mirror 104 and the transmission of the second group of lenses 105, it is irradiated on the phosphor powder wheel 106, so that the phosphor powder coated on the phosphor powder wheel 106 emits light of a corresponding wavelength, and the light emitted by the phosphor powder passes through the second lens in turn. The transmission of the lens group 105 and the reflection of the first dichroic mirror 104 reach the reflection surface of the second dichroic mirror 107;

[0042] The red light that the red light source 108 sends reaches the transmission surface of the second dichroic mirror 107; the blue l...

example 2

[0045] Such as Figure 1b As shown, the excitation light emitted by the phosphor excitation light source 120 passes through the refracting lens group and the reflecting lens group 121 to form a parallel beam of excitation light, and the parallel beam of excitation light passes through the transmission of the first group of lenses 122, the first dichroic After the transmission of the mirror 123 and the transmission of the second group of lenses 124, it is irradiated on the phosphor powder wheel 125, so that the phosphor powder coated on the phosphor powder wheel 125 emits light of a corresponding wavelength, and the light emitted by the phosphor powder passes through the second lens in turn. The transmission of the lens group 124 and the reflection of the first dichroic mirror 123 reach the X prism 126;

[0046] The red light emitted by the red light source 127 reaches the X prism 126; the blue light emitted by the blue light source 128 reaches the X prism 126; the X prism 126 ...

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PUM

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Abstract

The embodiment of the invention discloses a light source device and a projector and relates to the technical field of display. The brightness of an output light source of a projection display product is improved, and the whole size of the projection display product is reduced. The light source device comprises a first light source, a second light source, a fluorescent powder wheel capable of emitting light of at least two colors, and a light combining mirror, wherein the fluorescent powder wheel is coated with fluorescent powder; the fluorescent powder emits the light in corresponding wavelength when being illuminated by exciting light; and the light combining mirror outputs white light after the light emitted by the first light source, the light emitted by the second light source and the light emitted by the fluorescent powder reach the light combining mirror. With the adoption of the light source device, the quality of the light source output by the projection display product can be improved, and the whole size of the projection display product is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a light source device and a projector. Background technique [0002] At present, the light source devices in portable projection display products use three primary color light-emitting diodes (light-emitting diodes, LEDs) to emit white light. Output white light after photosynthetic processing. Due to the large optical expansion of the light emitted by the LED, the brightness of the output white light is low, and the overall volume of the projection display product is large, which also brings about cost problems. Contents of the invention [0003] Embodiments of the present invention provide a light source device and a projector, which are used to increase the brightness of an output light source of a projection display product and reduce the overall volume of the projection display product. [0004] A light source device, which includes a first light source, a second light s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/14F21V9/10F21V13/02F21V9/40
Inventor 闫国枫赵飞田有良李巍陈昱
Owner HISENSE
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