Light source device and vehicle lamp

Abstract

The invention provides a light source device comprising a laser light source used for emitting exciting light; an optical conductor, arranged on an emergent light path of the laser light source and used for conducting exciting light, the optical conductor comprising a diffusion section and a light-emitting section which are sequentially arranged in the conducting direction of the exciting light, and the diffusion section is provided with a first diffuse reflection structure; and a wavelength conversion layer, arranged on the surface of the light-emitting section of the optical conductor and can absorb the exciting light and emit excited light with the wavelength different from that of the exciting light. According to the light source device, the light angle distribution of excitation lightin Gaussian distribution emitted by the laser light source is changed before the excitation light reaches the light-emitting section of the light conductor, so that more excitation light irradiates the near laser light source section of the wavelength conversion layer, the excited uniformity of the wavelength conversion layer is improved, and the color uniformity of the emitted light of the lightsource device is further improved. The invention further provides a related vehicle lamp.

Description

Technical field [0001] The present invention relates to the field of lighting technology, in particular to a light source device and a vehicle lamp. Background technique [0002] As special lighting, such as car lighting, searchlights, and street lights, have increased energy consumption requirements, 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 the LED is not high, especially the energy conversion efficiency drops 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 emitted light, which brings about an increase in cost, a bloated light source volume, and a decrease in reliability. [0003] With the development of laser diode technology and the decrease in cost, another technical solution has attracted more and more attention...

AI Technical Summary

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

Images