Laser source device and laser projection device

Abstract

The invention discloses a laser source device. The laser source device comprises a laser device emitting lasers of at least one color, a wavelength conversion part used for being excited to generate fluorescence of at least one color, a light beam convergence part, a light cone part and a light uniformizing part. The light beam convergence part is used for converging the lasers emitted by the laser device to the wavelength conversion part. Use of multiple lenses in the light beam compression process is reduced. The light beam convergence part comprises a light reflection hook face. The laser device and the wavelength conversion part are both located on the same side of the light reflection hook face. The space of the light path along which the lasers are emitted to the wavelength conversion device is compressed. The light cone part is used for conducting divergence angle compression on combined light beams of the lasers of at least one color and fluorescence of at least one color, use of collimation and convergent lenses is reduced, compression light routes of the combined light of the lasers and the fluorescence are simplified. The light uniformizing part is used for outputting light beams output by the light cone part in a uniformized mode. By means of the laser source device, light path elements can be reduced, the space of the light path is compressed, the structure is simplified, and miniaturization requirements are met.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to a laser light source device and laser projection equipment. Background technique [0002] With the demand for miniaturization and portability of laser projection equipment, it is necessary to provide a miniaturized laser projection equipment, especially a miniaturized laser light source device. [0003] figure 1 It is a structural diagram of the laser light source device, such as figure 1 As shown, the laser light source device in the prior art includes a laser, and the blue laser is shown in the example; the fluorescent wheel is coated with green phosphor and yellow phosphor (or red phosphor), and the front of the phosphor wheel and There are collimating lens groups on the back; since the spot area of ​​the blue laser is larger after exiting the laser, and the spot required for excitation on the fluorescent wheel is smaller, it is necessary to perform beam shaping to...

AI Technical Summary

Problems solved by technology

[0009] It can be seen from the above that in the prior art, on the one hand, the laser needs to pass through a beam shaping optical path composed of multiple lenses to form a smaller spot to reach the fluorescent wheel for fluorescence excitation, and at least a collimating lens group needs to be set on the back of the fluorescent wheel (for figure 1 The reflective fluorescent wheel in the center needs to be set on both the front and the front), so as to collimate the laser light and the fluorescent light first, and then enter the uniform light component after further convergence, so as to compress the beam (spot area compression or light divergence angle compression) ) In the process, the number of optical elements is large, and the volume of the optical path space is large, which cannot meet the requirements of miniaturization

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