Laser light source and laser projection equipment

A laser light source, laser technology, applied in optics, optical components, instruments, etc., can solve the problems of degradation of projected image quality, laser speckle, etc., and achieve the effect of reducing the speckle effect and reducing the speckle phenomenon.

Inactive Publication Date: 2017-02-22
HISENSE
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a laser light source and laser projection equipment, which are used to alleviate the problems of laser speckle and degradation of projected image quality in the prior art

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  • Laser light source and laser projection equipment
  • Laser light source and laser projection equipment
  • Laser light source and laser projection equipment

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] In the optical path of laser transmission, there are often many optical lenses, which generally include optical lenses such as convex lenses, concave-convex mirrors, dichroic mirrors, and collimating lenses. The light beam emitted by the laser is transmitted in each lens in the optical path, and is transmitted or reflected for optical processing.

[0037] Laser is a light source with high brightness, strong directivity, and emits mo...

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Abstract

The invention discloses a laser light source and laser projection equipment. In the technical scheme provided by the embodiment of the invention, the laser light source comprises a speckle dissipation component; the speckle dissipation component comprises an optical lens group and a driving component; the optical lens group comprises N stacked optical lenses, N is an integer greater than or equal to 1, the N optical lenses comprise at least one wedge-shaped lens with a wedge-shaped section, and at least one of the incident surface, emergent surface and reflecting surface of the optical lens group is an inclined plane in the wedge-shaped optical lens; the optical lens group is driven by the driving component to rotate, the optical lens group rotates so that the optical path changes along with time when the same incident beam passes through the optical lens group, so that the positions of formed speckles change along with time, and a laser beam is prevented from irradiating to the same position on the optical lens for a long period of time. According to the laser light source and the laser projection equipment provided by the invention, the problems of laser speckles and projected image quality deterioration are alleviated.

Description

technical field [0001] The invention relates to the field of laser display, in particular to a laser light source and laser projection equipment. Background technique [0002] Laser is a light source with high brightness, strong directionality, and monochromatic coherent light beam. As an excellent coherent light source, laser light source has the advantages of good monochromaticity, strong directionality, and high luminous flux. Projection display technology field. [0003] The high coherence of the laser also brings about the speckle effect in the laser projection display. The speckle is the scattered light when the coherent light source irradiates a rough object. Since the wavelength is the same and the phase is constant, it will interfere in space. , some parts of the space interfere constructively, and some parts interfere destructively. The final result is granular light and dark spots on the screen. The feeling of dizziness and discomfort is generated, and the quali...

Claims

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Application Information

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IPC IPC(8): G03B21/20G02B27/48
CPCG03B21/2033G02B27/48G03B21/204G03B21/208
Inventor 李巍田有良
Owner HISENSE
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