Projector light source and forming method thereof

Abstract

A projector light source and a forming method thereof are provided. The projector light source includes an excitation light source used for generating a blue laser beam, a red LED light source used for generating a red first projection beam, and a runner rotationally arranged on the path of the laser beam and the first projection beam and having a first penetration region, a second penetration region and a wavelength conversion region. The first penetration region is used to allow the first projection beam to penetrate and guide the first projection beam to the projection direction. The second penetration region is used to allow the laser beam to penetrate to generate a blue second projection beam and guide the blue second projection beam to the projection direction. The wavelength conversion region is provided with a wavelength conversion material and is excited by the laser beam to generate a third projection beam, and the third projection beam penetrates the wavelength conversion region and is guided to the projection direction. By using the light path system of the invention, a laser beam can be on the same light path as an LED beam and other beams, and spectral interference can be eliminated. Moreover, the light path system can be simplified, the number of filters can be reduced, and small size and low cost are achieved.

Description

technical field [0001] The invention relates to a projection light source. Background technique [0002] A projector is a device that projects different colors of colored light to a display device to display images through an optical path system composed of a light source, a filter, a phosphor wheel (Phosphor Wheel, PW), and a beam splitter. [0003] Different light sources or different optical path system designs will not only affect the volume and cost of the projector. More directly, it will also affect the brightness and color performance of the final displayed image. [0004] In terms of light source, laser diode light source (Laser Diode) has the advantages of high brightness, long life and minimal heat generation. Therefore, it is the first choice for various light sources in terms of product life, image brightness and color performance. However, in order to obtain a light source structure with a wide color gamut, the cost of a projector using laser diodes of three...

AI Technical Summary

Problems solved by technology

[0005] In response to the above problems, Chinese patent document CN103676434A discloses an illumination light source device, a projection device and a method for controlling the projection device. Specifically, the excitation beam of a laser light source is divided into two paths through a reflection-transmission wheel, one path is directed to the projection direction, and the other path To excite the phosphor to generate light of other colors and be guided to the projection direction, so that one laser light source can generate high-intensity light of two colors, thereby reducing costs, but the above-mentioned optical path system has a complex structure, a large volume, and requires multiple The filter realizes light filtering, and the cost is high

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