Laser projector

Abstract

This invention discloses a laser projector, which contains modulating the lighting number LED in three multistage adjustable laser light source boards of R,G,B ternary color, collecting and overlapping laser beam by collecting lens and triple prism to obtain higher image gray, two magnet suspension mechanism realizing friction free line and field scanning operation. Said invention has high resolution, low cost and energy saving.

Description

Technical field: [0001] The invention relates to an image projection device, more specifically, a laser projector. Background technique: [0002] The purpose of manufacturing a projector is to obtain a large image. The existing projectors can be divided into front projection and rear projection according to the projection direction. According to the type of image source, there are three-gun CRT tube projectors commonly used in the past, and liquid crystal projectors that are now popular. Of course, there can be many types of subdivision according to various technical characteristics, and I will not list them one by one here, because in order to obtain large images, the methods used by existing projectors are: generate images from image sources The small image of the lens is magnified and projected out to obtain a large image. Using this method to obtain a large image, its main disadvantages or shortcomings are: 1. In terms of image quality, the brightness and contrast are ...

AI Technical Summary

Problems solved by technology

Using this method to obtain a large image, its main disadvantages or shortcomings are: 1. In terms of image quality, the brightness and contrast are insufficient, and the larger the image, the worse the brightness and contrast; Due to the influence of different refractive indices, large images are prone to color borders; the small images generated on the image source have limited precision, resulting in unclear images after enlargement; 2. In terms of use, high-brightness backlights will inevitably bring high heat and High energy consumption, poor reliability and energy-saving effect; 3. In terms of cost, to obtain the best possible image, it is necessary to use high-pixel, high-transmittance, high-heat-resistant liquid crystal panels, and high-precision lenses, so the production higher cost

[0008] 1. The scanning mechanism has poor durability;

[0009] 2. The gray level of the image is not enough, and the image definition is not good;

[0010] 3. It is impossible to take into account the needs of pure black and high brightness display in the image at the same time;

[0011] 4. There is a large mechanical noise in the scanning mechanism;

[0012] 5. The laser light source consumes a lot of energy;

[0013] 6. The durability of the laser light source is not good;

[0014] 7. The utilization efficiency of laser light source is low

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