Micro-lens array headlamp for led automotive lighting

Abstract

The invention discloses a micro lens array type LED (light-emitting diode) headlamp for automobile illumination, which comprises an LED chip, an aluminium substrate and a radiator. The micro lens array type LED headlamp further comprises a collimator and a free-form surface micro lens array. The LED chip is welded on the aluminium substrate; the aluminium substrate, the collimator and the free-form surface micro lens array are arranged on the radiator; the light-emitting surface of the LED chip faces the incident face of the collimator; after light passes through the collimator, the light is emitted in a parallel light beam way, and the light enters the incident face of the free-form surface micro lens array vertically. The micro lens array type LED headlamp for automobile illumination, disclosed by the invention, has the advantages of less spare and accessory parts, simple and stable structure, convenient installation and high radiating efficiency, in addition, a light barrier is not needed for light distribution, the loss of light energy caused by a light distribution system is reduced, and the light energy use ratio is improved. By adopting the free-form surface optical design, the trend of light rays can be effectively controlled, the glare effect is restrained, and meanwhile, the light distribution requirements of the LED headlamp for an automobile in the national standard GB25991-2010 can be met.

Description

technical field [0001] The invention relates to the technical field of LED automobile headlight lighting, in particular to a microlens array type headlight for LED automobile lighting. Background technique [0002] LED light sources have the advantages of long life, high efficiency and energy saving, small size, and environmental protection. At present, they have been widely used in vehicle brake lights, turn lights, tail lights, and instrument lights. Research on the application of headlights is also increasing. More, LED will soon become the mainstream of the car light source market. With the continuous expansion of the application of LED in vehicle lighting systems and the continuous improvement of application technology, LED will gradually replace traditional incandescent lamps and halogen tungsten lamps and become the "fourth generation" light source of vehicle lights. The development trend of lighting application. [0003] Compared with other light sources, LEDs have...

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Problems solved by technology

[0004] The present invention aims at the above-mentioned problems, and provides a microlens array type headlight for LED automobile lighting. It solves the problem of low utilization rate of light energy in the design of projected LED headlights, and can meet the light distribution requirements of the national standard GB25991-2010 for automotive LED headlights

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