Projection system

Abstract

The invention provides a projection system comprising a main light source, a compensation light source and a color wheel assembly. The main light source is used for sending out first color light. The compensation light source is used for emitting second color light. And the color wheel assembly includes a first filter zone formed by film plating; the first color light and the second color light enters the first filtering zone simultaneously; the first color light passes through the first filter zone and then third color light is obtained; the second color light passes through the first filter zone and then fourth color light is obtained; and the third color light and the fourth color light are mixed to obtain fifth color light, wherein the wavelength of the fifth color light is located in a wavelength range of the third color light and a wavelength range of the fourth color light. Therefore, because the third color light and the fourth color light are mixed to obtain the fifth color light, a pure-color modulation effect is realized. Moreover, with the filtering function based on the dual light source nit, the color wheel assembly, and the film plating design, color light needed by imaging can be obtained. And the structure of the projection system is simple and the cost is low.

Description

technical field [0001] The invention describes a projection system, especially a projection system that adjusts the wavelength of light by compensating a light source. Background technique [0002] The projection system is a device that can project images or videos on the screen. It can be connected with computers, VCD, DVD, BD, game consoles, DV, etc. through different interfaces to play corresponding video signals to achieve large-screen projection display. way to provide viewers with excellent presentation and visual effects. With the continuous development of electronic technology, projection systems are widely used in education, business and family. [0003] The current projection technology is also being updated and iterated. The traditional bulb light source has a low color gamut. Therefore, in addition to solving the problem of lifespan, the new light source of the laser also enhances the color performance of the projection system, that is, improves the performance ...

AI Technical Summary

Problems solved by technology

However, this blue laser mixed with fluorescent pink wheel mode will have such a problem: the wavelength of the blue laser emitted by the blue laser is slightly shorter by 2-6 nanometers, and the commonly known blue laser has a "purple color", which makes The image projected by this laser projection system has the problem that although the color gamut value is high, the color accuracy is not good, which affects the image quality.

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