Dipped headlamp reflector, dipped headlamp and motor vehicle

Abstract

The invention is applicable to the lighting field and provides a dipped headlamp reflector, a dipped headlamp and a motor vehicle. The inner surface of the dipped headlamp reflector is provided with multiple layers of free-form surfaces which are distributed left and right and are arranged stepwise. The free-form surfaces have width of 3-7mm. the datum plane of each free-form surface is paraboloid and the focal length of the paraboloid is 6-8mm. An intercepting panel is arranged on the circumference of the light outlet of the reflector. The inner surface of the dipped headlamp reflector is designed into stepped multiple layers of free-form surfaces in the embodiment of the invention, so that the light emitted by the light source divergently exits after being reflected by the free-form surfaces and is projected in close and large range, and the rays are more divergent, thus meeting the requirement of photometric characteristics of the dipped headlamp. The light emitted by the light source directly exits or exits by only being reflected by the free-form surfaces or the intercepting panel once, and light attenuation is low.

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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