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Light source device and image display device

A light source device and light beam technology, applied in the field of light sources, can solve the problems that the output brightness cannot meet the brightness requirements, the service life of the image display device is affected, and the transmittance and service life of optical elements are reduced.

Inactive Publication Date: 2016-03-23
HISENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As image display devices are widely used in scenes such as cinemas, the demand for output brightness of image display devices has increased, and the output brightness (about 3000 lumens) of current image display devices cannot meet the brightness requirements; therefore, how to improve image display The output brightness of the light source of the device is a technical problem that needs to be solved urgently
[0003] In the prior art, the output brightness of the laser light source of the image display device is increased by increasing the power of the laser, thereby increasing the output brightness of the image display device; but as the output brightness of the laser light source increases, due to the thermal effect of the laser, the transmission of the optical element The efficiency and service life will continue to decrease, which will seriously affect the service life of the image display device

Method used

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Experimental program
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Embodiment 1

[0029] Figure 1A It is a schematic structural diagram of Embodiment 1 of the light source device of the present invention, such as Figure 1A As shown, the light source device includes: a first laser system 10, a second laser system 11, and a fluorescent wheel 12; the first laser system 10 includes: a first group of lasers 100 and a first group of transmission optical components 101; the second The laser system 11 includes: a second group of lasers 110 and a second group of transmission optical components 111 (optionally, each group of lasers may include: at least two lasers); the fluorescent wheel includes: a fluorescent area and a transmission area (optionally , the fluorescent wheel can be a transmissive fluorescent wheel; the fluorescent wheel is rotated by a centrally arranged motor); optionally, the first laser system 10 and the second laser system 11 are arranged on the fluorescent wheel 12 on both sides; the first polarized light beam produced by the first group of las...

Embodiment 2

[0039] Figure 2A It is a schematic structural diagram of Embodiment 2 of the light source device of the present invention. On the basis of the above embodiments, the first group of transmission optical components 101 includes: a first light-combining lens 101a; the second group of transmission optical components 111 includes: Two light-combining lenses 111a; wherein, a film for transmitting the first polarized light beam and reflecting the second polarized light beam is provided on the first surface of the first light-combining lens 101a close to the first group of lasers 100 layer, a film layer for transmitting the first polarized light beam and reflecting the first part of the light beam is provided on the second surface of the first light-combining lens 101a close to the fluorescent wheel 12; the second light-combining lens A film layer for transmitting the second polarized light beam and reflecting the first polarized light beam is provided on the third surface of 111a cl...

Embodiment 3

[0044] Figure 2C It is a structural schematic diagram of the third embodiment of the light source device of the present invention, in the above Figure 2A and Figure 2B On the basis of the above, the first set of transmission optical components 101 also includes: a first collimating lens group 101c, wherein the first collimating lens group 101c is arranged between the first light-combining lens 101a and the fluorescent wheel Between 12; the first collimating lens group 101c is used for: collimating the first polarized light beam passing through the first light-combining lens 101a, and directing it to the fluorescent wheel 12; because the fluorescent wheel The divergence angle of the generated first light beam is large and the directionality is uncertain, and the first collimating lens group 101c is also used for: combining the first part of the light beam and the second polarized light beam passing through the fluorescent wheel 12 collimate, and shoot to the first light-co...

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Abstract

The embodiment of the invention provides a light source device and an image display device. The light source device comprises a first laser system, a second laser system and a fluorescent wheel; the first laser system comprises a first laser group and a first optical transmission assembly group; the second laser system comprises a second laser group and a second optical transmission assembly group; and the fluorescent wheel comprises a fluorescent area and a transmission area, wherein a first polarized light beam generated by the first laser group and a second polarized light beam generated by the second laser group irradiate two opposite surfaces of the same area on the fluorescent wheel respectively. Therefore, the optical transmission assemblies corresponding to the laser systems can simultaneously output two light beams, the two light beams can be superimposed to obtain high-brightness mixed white light, and the output brightness of the light source device and the image display device is improved accordingly.

Description

technical field [0001] Embodiments of the present invention relate to light source technology, and in particular, to a light source device and an image display device. Background technique [0002] Usually, in image display devices (such as projectors), laser light generated by a group of lasers is mostly used as the light source of the image display device. The image generation part of the device is used to form the image to be displayed; generally, the output brightness of the light source of the image display device is about 6000-10000 lumens, and the corresponding output brightness of the image display device is about 3000 lumens. As image display devices are widely used in scenes such as cinemas, the demand for output brightness of image display devices has increased, and the output brightness (about 3000 lumens) of current image display devices cannot meet the brightness requirements; therefore, how to improve image display The output brightness of the light source of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2013G03B21/2066G03B21/2073G03B21/208
Inventor 李巍刘显荣田有良
Owner HISENSE
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