Laser light source and laser display system
A laser light source and laser technology, applied in optics, instruments, projection devices, etc., can solve the problem of uneven illumination of the picture, and achieve the effect of improving the uneven illumination of the picture, increasing the degree of divergence, random spatial phase, and uniform distribution
Active Publication Date: 2021-04-30
HANGZHOU HONGSHI TECH
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Problems solved by technology
[0004] The object of the present invention is to provide a laser light source and a laser display system to solve the technical problem in the prior art that the beam of the laser light source is hollowed out and the screen illumination is not uniform
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[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, and is only for conv...
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Abstract
The invention relates to the technical field of laser display, and provides a laser light source and a laser display system, and the laser light source comprises a laser module group which comprises a laser and an optical fiber outlet end, wherein a light beam of the laser is emitted through the optical fiber outlet end; a conical lens, wherein conical surface of the conical lens is opposite to the plane of the conical lens, the plane of the conical lens faces the optical fiber outlet end, and the optical axis of the laser beam coincides with the central axis of the conical lens; and a scattering sheet which is provided with a micro-lens array which is arranged randomly, wherein the laser module group, the conical lens and the scattering sheet are arranged along the light path. The conical lens and the scattering sheet are arranged on the light emitting path of the laser module provided with the optical fiber outlet end, the problem of light beam hollowing is effectively solved, hollowing light beams are distributed more evenly, the light beams are diffused through the micro lens array of the scattering sheet, and the probability of light beam interference is further reduced. Dark and bright speckles are avoided, and the problem of non-uniform picture illuminance is improved.
Description
technical field [0001] The present invention relates to the technical field of laser display, and more specifically, relates to a laser light source and a laser display system. Background technique [0002] Due to the advantages of high brightness, strong directionality, and good monochromaticity, lasers have been gradually used as light sources in the field of projection display technology in recent years. Laser projection display technology (LDT), also known as laser projection technology or laser display technology, is a display technology that uses red, green, and blue primary color lasers as light sources, which can more truly reproduce the rich and gorgeous colors of the objective world, and has better expressiveness. [0003] The laser light generated by the existing lasers is shaped and beam-combined and exits from the exit end of the optical fiber. As a result, the illumination of the screen is uneven, resulting in the degradation of laser projection quality and p...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G03B21/20
CPCG03B21/208G03B21/2033
Inventor 毕勇张婧京张硕
Owner HANGZHOU HONGSHI TECH