Light source system and projection system

Abstract

The present invention relates to a light source system, comprising: an excitation light source, the excitation light source emits excitation light; a supplementary light source, the supplementary light source emits supplementary light; a wavelength conversion device, the wavelength conversion device is excited by the excitation light to generate a stimulated light , the etendue of the subject light is greater than that of the supplementary light; the light combination device, the light combination device combines the subject light and supplementary light; the first light guiding component is used to guide the excitation light to the a wavelength conversion device; a second light guiding component is used to guide the subject light to the light combination device; and a third light guide component is used to guide supplementary light to the light combination device, wherein the subject light on the wavelength conversion device The light spot forms an intermediate image through the second light guiding component, and the supplementary light and the received light are combined at the position of the intermediate image. The invention also provides a projection system. The invention improves the utilization efficiency of light energy and improves the uniformity of the picture.

Description

technical field [0001] The invention relates to a light source system, in particular to a light source system and a projection system using the light source system. Background technique [0002] In the field of laser light source technology, lasers are favored by people because of their high brightness and good color, but lasers are expensive, especially red and green lasers have low electro-optical conversion efficiency, so a relatively large number of lasers is required. The cost of the laser is not only its own price, the output power of the laser depends on better heat dissipation conditions, and the heat dissipation cost is relatively high. In addition, laser light is a kind of coherent light, and its display screen has very serious speckle problem. To eliminate speckle, it is necessary to introduce more decoherent optical components, and these optical components usually have a higher price. Therefore, pure laser display technology is rarely used in consumer products. ...

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Problems solved by technology

But at the same time, it also brings some difficulties to the optical design. Since the fluorescence spectrum and the laser spectrum have overlapping bands, the combination of the two will inevitably cause some loss of light efficiency, and there is also the problem of uneven color.

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