Light source assembly and projection device

Abstract

The embodiment of the invention discloses a light source assembly and a projection device, and belongs to the technical field of projection. The light source assembly comprises a laser for emitting a first light beam and a second light beam; a light combination assembly which comprises a reflection area and a transmission area, wherein the transmission area comprises a first transmission area and a second transmission area; the first light beam sequentially passes through a first lens, the first transmission area and a third lens and enters a third lens group; the second light beam sequentially passes through a second lens, the second transmission area and a fourth lens and enters the third lens group; the third lens group converges the incident first light beam and the incident second light beam and emits the light beams to a wavelength conversion device; and the wavelength conversion device which reflects or converts the incident light beam into fluorescent light and emits the fluorescent light to the third lens group, wherein the third lens group collimates the light beam and then emits the light beam to a reflection area of the light combination assembly, and the light beam is reflected to a light emitting direction by the reflection area. According to the embodiment of the invention, the light receiving efficiency of the light source assembly is improved.

Description

technical field [0001] The embodiments of the present application relate to the field of projection technology, and in particular, to a light source component and a projection device. Background technique [0002] With the continuous development of science and technology, projection equipment is more and more used in people's work and life. At present, the projection equipment mainly includes a light source system, an optomechanical system and a lens. After the light beam is processed, it is emitted to the lens, so that the lens can emit the light beam to the projection screen, and then realize the display of the picture on the projection screen. [0003] In the related art, the light source assembly includes a laser for emitting excitation light; the light combination assembly includes a reflection area and a transmission area; a wavelength conversion device is used to emit or accept the excitation light incident to the wavelength conversion device. Excited to fluoresce. ...

AI Technical Summary

Problems solved by technology

The transmission area is often set as a dichroic mirror. In order to allow the excitation beam to pass through the transmission area, the area of ​​the transmission area is often relatively large. An excessively large area of ​​the transmission area will cause the fluorescence emitted by the wavelength conversion device to be lost in this area, resulting in the loss of light source components. The light collection efficiency is low

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