Dipped headlight reflector, dipped headlight and motor vehicle

Abstract

The invention is applicable to the field of lighting, and provides a dipped headlight reflector, a dipped headlight and a motor vehicle; the inner surface of the dipped headlight reflector is provided with a plurality of layers of free curved surfaces, the free curved surfaces are distributed left and right with a light source as the center and lined in a ladder shape, and the width of the free curved surfaces is 3 to 7mm; the datum planes of all the free curved surfaces are paraboloids, and the focus of the paraboloids is 6 to 8mm; and the optical axis of the light source coincides with the axis of the reflector, and light interception boards are arranged in the circumferential direction of a light outlet of the reflector. The embodiment of the invention designs the inner surface of the dipped headlight reflector into the layers of the ladder-shaped free curved surfaces so that the light given out by the light source is radiated and emitted after being reflected by the free curved surfaces, projected in a near distance and a large range, quite scattered and meets the requirements on the light distribution performance of the dipped headlight; and the light given out by the light source is directly emitted or is emitted only after being reflected at one step by the free curved surfaces or the light interception boards, and the light decay is small.

Description

technical field [0001] The invention belongs to the field of lighting, and in particular relates to a low beam reflector, a low beam and a motor vehicle. Background technique [0002] At present, the light sources of automobile headlights are mainly halogen tungsten lamps and high-pressure gas discharge lamps. The lamps have poor shock resistance, short service life, and relatively high power consumption. In contrast, LED light sources have the advantages of energy saving, long life, and good shock resistance. The development of LED as a light source for automobile headlights has been a hot spot in recent years. [0003] After 2004, various LED headlights were exhibited at international auto exhibitions. In May 2007, Japan's Koito Manufacturing Co., Ltd. successfully installed white LED headlights on the LEXUS LS600h model. The optical system uses The ellipsoidal reflector and lens form a transmissive optical system. In 2007, OSRAM Germany launched the LED module "OSTAR H...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a low beam reflector, aiming at solving the problems of serious light attenuation and low efficiency of existing low beam reflectors

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