Light source system, method for improving light efficiency thereof, and display device

Abstract

The invention provides a light source system, a method for improving its light efficiency, and a display device, wherein the light source system includes: an excitation light source for emitting excitation light; a supplementary light source for emitting supplementary light; a wavelength conversion device for partially exciting The light undergoes wavelength conversion and emits the first light; and the guiding device includes a converging lens and a light-splitting and combining element, the converging lens is used to adjust the divergence angle of the first light, and the light-splitting and combining element includes a first area, The supplementary light is focused near the first area, and the supplementary light is combined with the first light emitted by the converging lens at the light splitting and combining element at the etendue; the first light on the surface of the wavelength conversion device A spot of light passes through the converging lens to form a magnified image at the light splitting and combining element, thereby improving the light efficiency of the light source system.

Description

technical field [0001] The invention relates to the field of light source technology, in particular to a light source system, a method for improving its light efficiency, and a display device. Background technique [0002] This section is intended to provide a background or context to a detailed description of the invention that is recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] During the development of the projection display industry, the brightness and color of the display screen have always been two aspects that have attracted much attention. However, the red and green primary colors of common laser phosphor projection systems are broad-spectrum red phosphors and green phosphors respectively. When expanding the color gamut, it is inevitable to cut off some of the spectral colors that do not meet the requirements, resulting in a decrease in the brightness of the projection screen. . [0004] In the ...

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Problems solved by technology

[0007] In order to solve the technical problem of the low utilization rate of supplementary laser light in the prior art display equipment, the present invention provides a light source system with a high utilization rate of the emitted light from the supplementary light source. The present invention also provides a method for improving the light efficiency of the light source system and display equipment

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