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Laser light source and laser projection device

A laser light source and optical path technology, applied in the field of laser projection, can solve the problems of affecting the optical efficiency and overall brightness of laser projection devices, affecting color coordinates and color temperature indicators, and misalignment of outgoing light spots, so as to improve optical utilization efficiency and high overall brightness , The effect of high optical utilization efficiency

Inactive Publication Date: 2020-02-11
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned laser light source, due to the different transmission paths of the blue light path and the fluorescent light path, the assembly error of the optical components and other factors, the centers of the two beams will not coincide, so the exit spots generated by the convergence of the two beams through the lens will not coincide. , which will affect the optical efficiency and overall brightness of the laser projection device, as well as the color coordinates and color temperature indicators

Method used

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  • Laser light source and laser projection device
  • Laser light source and laser projection device
  • Laser light source and laser projection device

Examples

Experimental program
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Embodiment 1

[0040] figure 1 A schematic diagram of the optical path of the laser light source provided in Embodiment 1 of the present invention; figure 2 A schematic diagram of the first optical path of the laser light source provided in Embodiment 1 of the present invention; image 3 It is a schematic diagram of the second optical path of the laser light source provided by Embodiment 1 of the present invention.

[0041] Figure 4 The front view of the laser light source provided by Embodiment 1 of the present invention; Figure 5 Bottom view of the laser light source provided in Embodiment 1 of the present invention; Figure 6 Schematic diagram of installation of the first adjusting bracket provided by Embodiment 1 of the present invention; Figure 7 for Figure 6 Partial schematic diagram at B; Figure 8 An exploded view of the installation of the first adjusting bracket provided in Embodiment 1 of the present invention; Figure 9 for Figure 4 Partial schematic diagram at A; ...

Embodiment 2

[0089] This embodiment provides a laser projection device, including the laser light source described in the first embodiment. The laser projection device of this embodiment is mainly composed of a laser light source, an optical-mechanical component, and a lens component. The specific structure, function and working principle of the laser light source have been described in detail in the first embodiment above, and will not be repeated here. .

[0090] Specifically, the optical-mechanical assembly may include components such as a lens and a light pipe 9. The laser light source is used to emit laser light and form a light path of the light source. After the light source is emitted, it passes through the lens. 9. The light guide 9 can homogenize the light source, and the laser projection device can also include a light valve, which receives the light emitted by the light guide 9 and projects it into the lens for imaging.

[0091] In the laser light source and laser projection d...

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Abstract

The invention provides a laser light source and a laser projection device. The laser light source comprises a dichroscope, a fluorescent wheel, a reflector assembly and an adjusting support assembly,wherein incident light is reflected by the dichroscope and enters the fluorescent wheel to form a first light path and a second light path, the first light path returns to the dichroscope from the fluorescent wheel and forms first emergent light through the dichroscope, and the second light path reaches the reflector assembly through the fluorescent wheel, returns to the dichroscope after being reflected by the reflector assembly and is reflected by the dichroscope to form second emergent light, the adjusting support assembly comprises a first adjusting support and a second adjusting support,and the first adjusting support and the second adjusting support are used for adjusting the direction of the dichroscope and the direction of the reflector assembly respectively so that the light beamcenter of the first emergent light and the light beam center of the second emergent light can coincide. The laser light source is advantaged in that optical utilization efficiency of the laser lightsource is high, and the overall brightness of the laser projection device is high.

Description

technical field [0001] The invention relates to the technical field of laser projection, in particular to a laser light source and a laser projection device. Background technique [0002] With the continuous advancement of science and technology, laser projection devices appear more and more in people's home entertainment and work due to their advantages such as wide color gamut and high color purity. [0003] A laser projection device usually consists of a laser light source, an optical-mechanical component, and a lens component. In current laser projection devices, the laser light source mainly includes a blue laser, a dichroic mirror, a fluorescent wheel, and multiple reflectors. When performing projection display, the blue laser emits blue light, and the blue light shines on the fast-rotating fluorescent wheel. When the fluorescent wheel rotates to the phosphor area, the blue light can excite the phosphor to produce fluorescence, and the fluorescent wheel can reflect the...

Claims

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Application Information

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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/2053G03B21/2066
Inventor 逄相来
Owner QINGDAO HISENSE LASER DISPLAY CO LTD