Light source system and projection device

Abstract

The invention discloses a light source system and a projection device. The light source system comprises a first light source, a wavelength conversion device, a driving device, a second light source and a control device, wherein the first light source emits first laser light; the wavelength conversion device comprises three primary-color light areas and a mixed-color light area; the driving devicedrives the wavelength conversion device to move so as to enable the areas of the wavelength conversion device to periodically receive the first laser light according to a time sequence; the second light source emits complementary light, and the complementary light is consistent with light emitted by one primary-color light area in color; the control device controls on-off of the second light source, and the control device controls the second light source to be turned on within at least two of all time periods of the same-color primary-color light area for receiving the first laser light, alltime periods of the mixed-color light area for receiving the first laser light and partial time periods of the different-color primary-color light area for receiving the first laser light. The technical scheme of the invention can obtain a light source system which is high in luminous flux and high in supplementary light source utilization rate.

Description

Technical field [0001] The present invention relates to the field of light source technology, in particular to a light source system and a projection device using the light source system. Background technique [0002] For the laser fluorescent white light source system used in the single DLP projection system, the wavelength conversion device generally adopts a segmented color wheel, which contains at least R, G, and B three colors. The projection system generally has requirements for the white field color of the white light source, so the proportion of the R, G, and B colors in the segmented color wheel will be relatively fixed. [0003] Since the luminous efficiency of red fluorescence in the laser fluorescent white light source system is relatively low, in order to increase the brightness of the red light, in the light source system, a supplementary red light source is usually added in addition to the main light source emitting RGB tricolor light. However, if supplementary ligh...

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Problems solved by technology

However, in such a system, the supplementary light source is only turned on when the red segment of the fluorescent color wheel is irradiated by the excitation light, resulting in a large amount of time for the supplementary light source to be idle, and its utilization rate is very low, which increases the cost and does not affect the brightness of the light source system. To provide due contribution to the improvement of

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