Lighting assembly applied in laser projection device

Abstract

The invention provides a lighting assembly applied in a laser projection device. The lighting assembly includes a first spherical lens, a second spherical lens, and an aspherical lens, wherein the first spherical lens is located on a path of a first outgoing light beam emitted from a photoconductive tube for increasing the deflection angle of the first outgoing light beam and performing field curvature correction and distortion correction on the first outgoing light beam; the second spherical lens is located on a path of a second outgoing light beam emitted from the first spherical lens for performing field curvature correction and distortion correction on the second outgoing light beam; and the aspheric lens is located on a path of a third outgoing light beam emitted from the second spherical lens for performing aberration correction on the third outgoing light beam and projecting the third outgoing light beam to a TIR (Total Internal Reflection) prism, so as to enable the TIR prism to totally reflect the third outgoing light beam to a DMD module. The scheme of the lighting assembly applied in a laser projection device reduces the lateral dimension and the longitudinal height of the lighting assembly by reducing the number of lenses and using special lenses, and also reduces the overall cost at the same time, so as to solve the problem that the lighting assembly is large in the volume and high in the cost on the premise of guaranteeing that the performance of the laser projection device is not affected.

Description

technical field [0001] The invention relates to the field of projection technology, in particular to an illumination assembly applied to a laser projection device. Background technique [0002] A laser projection device is a device that can project images or videos onto a screen and is widely used in homes, offices, schools and entertainment venues. As an emerging projection display technology, laser projection products have higher brightness and lifespan than LED projection products. However, at present, laser projectors generally have the problems of large size and high price, which seriously affects the development of laser cinemas. [0003] like figure 1 , 2 As shown, it is a structural schematic diagram of the lighting components in the laser projection device used in the design of the lighting system in the prior art. The prior art generally adopts the architectural mode of 4 spherical lenses, 2 flat mirrors, and TIR, that is, 4 Spherical lens + 2 flat reflectors +...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a lighting assembly used in a laser projection device, so as to solve the defects of large volume and high cost of the lighting assembly in the laser projection device proposed in the background art

Images