A wavelength conversion device and light source system

Abstract

The invention provides a reflection type wavelength conversion device. The reflection type wavelength conversion device comprises a first functional part and a second functional part; the first functional part comprises a wavelength conversion layer; the wavelength conversion layer is used for absorbing exciting light and generating excited light; the second functional part comprises a reflectingpart or a scattering part, wherein the reflecting part is used for reflecting the exciting light, and the scattering part is used for scattering or diffusely reflecting the exciting light; the first functional part and the second functional part are concentrically or parallelly arranged; the first functional part receives a first part of the exciting light and performs wavelength conversion on thefirst part of the exciting light; the second functional part receives a second part of the exciting light and performs reflection, scattering or diffuse reflection on the second part of the excitinglight. With the above technical schemes of the invention adopted, the exciting light and excited light can be emitted in the same light path; the structure of the reflection type wavelength conversiondevice is simple; a coupling system of the exciting light and the excited light does not need to be independently arranged; the size of a light source can be very small; and cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a wavelength conversion device for coupling multi-primary color lasers and wavelength conversion light. Background technique [0002] Laser is a light source with high brightness, strong directionality, and monochromatic coherent light beam. Due to its many advantages, it has been gradually used as a light source in the field of projection display technology in recent years. At present, there are several kinds of laser light sources on the market, such as pure laser light source, laser fluorescent light source, and laser fluorescent mixed light source. Because the pure laser light source uses three primary color lasers to emit light directly without wavelength conversion, and the half-wave width of the laser is relatively narrow, the color gamut of this type of light source is relatively good, but its cost has always been high, and its speckle processing is relatively difficult....

AI Technical Summary

Problems solved by technology

Because the pure laser light source uses three primary color lasers to emit light directly without wavelength conversion, and the half-wave width of the laser is relatively narrow, the color gamut of this type of light source is relatively good, but its cost has always been high, and its speckle processing is relatively difficult. Disaster

Laser fluorescent light source is a light source that uses blue laser to excite wavelength conversion materials to obtain white light. This type of light source is low in cost and has a good effect of dissipating spots, but its relative color gamut is relatively difficult to do well.

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