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Wedge-shaped laser projection light flux device

A laser projection, wedge-shaped technology, used in projection devices, optics, instruments, etc., to prevent permanent damage, improve aberrations, and make small changes

Inactive Publication Date: 2019-09-17
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a wedge-shaped laser projection light flux device that effectively solves the problem of white field color fringes in projection display in the traditional technology

Method used

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  • Wedge-shaped laser projection light flux device
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  • Wedge-shaped laser projection light flux device

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Such as figure 1 , figure 2 , image 3 The shown wedge-shaped laser projection light flux device includes a shaping lens group 20, a TIR prism 40 and a light valve 30 arranged sequentially along the transmission order of light, and includes a wedge-shaped light flux 10, which is arranged between the shaping lens group 20 and the light valve 30. Between the light sources 11, the plane where the light outlet 12 on the side of the wedge-shaped light channel 10 close to the shaping lens group 20 is obliquely intersected with the light transmission direction in the wedge-shaped light channel 10, wherein the light passes from the light outlet 12 to the TIR prism (40) The upper optical path 31 and the lower optical path 32 between the reflective surfaces 41 are equal.

[0020] In the present invention, the plane where the light outlet 12 on the side of the wedge-sh...

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Abstract

The invention relates to the field of laser display equipment, in particular to a wedge-shaped laser projection light flux device, and aims at effectively solving the white field and color edge problem of projection display in the prior art. The device comprises a shaping lens group, a TIR prism and a light valve which are sequentially arranged along the conduction sequence of light. The device also comprises a wedge-shaped light flux, the wedge-shaped light flux is arranged between a shaping lens set and a light source, the plane where a light outlet, close to one side of the shaping lens set, of the wedge-shaped light flux is located is obliquely intersected with the light conduction direction in the wedge-shaped light flux, and the upper optical path and the lower optical path of light from the light outlet to the reflection face of the TIR prism are equal. According to the invention, the light flux is changed into the wedge-shaped light flux, so a traditional light flux flush light outlet is changed into the wedge-shaped light outlet, the upper optical path of the upper edge of the light flux light outlet is increased, the optical paths of the upper edge and the lower edge of the light outlet tend to be balanced, the aberration of light spots imaged to the surface of the light valve is improved, an existing light engine system is slightly changed, and meanwhile permanent damage to the light valve caused by light overflowing is prevented. The device is especially suitable for laser projection structures.

Description

technical field [0001] The invention relates to the field of laser display equipment, in particular to a wedge-shaped laser projection light flux device. Background technique [0002] In recent years, due to the excellent performance of laser in the display field, laser display has gradually become the development direction of display technology, and the popularization of laser display will bring a revolution to the field of video display. Laser display covers advanced technologies in many fields. As long as you master the key core technology of its industrialization, you can become the leader of the next generation display technology, and at the same time, it can promote the development of other related industries and have a far-reaching impact on many related fields. [0003] Laser display is a display technology based on red, green and blue (RGB) three primary color lasers as the light source, which can most truly reproduce the rich and brilliant colors of the objective w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/00
CPCG03B21/008G03B21/20G03B21/208
Inventor 欧阳广闻
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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