Light source system and projection device

Abstract

The invention discloses a light source system and a projection device. The light source system includes a first light source that emits a first laser light; a wavelength conversion device that includes three primary color light regions and a mixed color light region; a driving device that drives the wavelength conversion device to move so that the wavelength Each area of ​​the conversion device periodically receives the first laser light in time sequence; the second light source emits supplementary light, and the supplementary light is consistent with the color of the emitted light in a primary color light area; the control device controls the switch of the second light source, and the same color primary color In at least two of the whole period of time when the light area receives the first laser light, the whole time period when the mixed color light area receives the first laser light, and the partial time period when a different-color primary color light area receives the first laser light, The control device controls the second light source to be turned on. The technical solution of the invention can obtain a light source system with high luminous flux and high utilization rate of supplementary light source.

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 a single DLP projection system, the wavelength conversion device generally adopts a segmented color wheel, including at least three colors of R, G, and B. Projection systems generally have requirements for the white field color of white light sources, so the proportions of R, G, and B in the segmented color wheel will be relatively fixed. [0003] Since the luminous efficiency of red fluorescence is relatively low in the laser fluorescent white light source system, in order to increase the brightness of red light, a supplementary red light source is usually added to the light source system in addition to the main light source that emits RGB three-color light. However, if a supplementary light source i...

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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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