A light source device and a vehicle lamp

Abstract

The invention protects a light source device, which includes a laser light source for emitting excitation light; a photoconductor, which is arranged on the exit light path of the laser light source, for conducting the excitation light, and the photoconductor includes diffusion sections arranged in sequence along the direction of excitation light transmission and the light-emitting section, the diffuse section is provided with a first diffuse reflection structure; the wavelength conversion layer is arranged on the surface of the light-emitting section of the photoconductor, capable of absorbing the excitation light and emitting the received light with a wavelength different from that of the excitation light. The light source device enables the Gaussian distribution excitation light emitted by the laser light source to change the light angle distribution before reaching the light-emitting section of the photoconductor, so that the excitation light is more irradiated on the wavelength conversion layer near the laser light source section, thereby improving the wavelength conversion layer. The excited uniformity of the light source device improves the color uniformity of the emitted light. The invention also protects a related vehicle lamp.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a light source device and a vehicle lamp. Background technique [0002] With the improvement of energy consumption requirements for special lighting such as car lighting, searchlights, and street lights, cold light sources represented by LED light sources have gradually replaced the previous hot light sources such as halogen lamps and become the mainstream of the market. However, the luminous efficiency of LED is not high, especially the energy conversion efficiency decreases under high power and high current. In high-end lighting demand scenarios, it is usually necessary to integrate LED arrays to achieve high luminous flux output light, which brings about increased costs, bloated light source volume, and decreased reliability. [0003] With the development of laser diode technology and the decline in cost, another technical solution has attracted more and more attention—laser...

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Problems solved by technology

[0007] Aiming at the defect of uneven color of the emitted light of the light source device in the prior art, the present invention provides a light source device with improved color uniformity of the emitted light, including a laser light source for emitting excitation light; a photoconductor disposed on the laser The outgoing light path of the light source is used to conduct the excitation light, the photoconductor includes a diffusion section and a light-emitting section arranged in sequence along the transmission direction of the excitation light, and the diffusion section is provided with a first diffuse reflection structure; A conversion layer, arranged on the surface of the light-emitting section of the photoconductor, capable of absorbing the excitation light and emitting the stimulated light with a wavelength different from the excitation light

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