High-efficiency LED double-chip high beam and low beam integrated automobile headlamp optical system

Abstract

The invention relates to a high-efficiency LED double-chip high beam and low beam integrated automobile headlamp optical system. The system comprises LED light sources, reflection cups and a lens. The LED light sources comprise the upper LED light source and the lower LED light source. The reflection cups are the upper reflection cup matched with the upper LED light source and the lower reflection cup matched with the lower LED light source. The lens comprises a planar incident face and an outer convex face allowing light to be emitted. The side, close to the incident face, of the lens is provided with a positioning protruding ring protruding on the outer side of the outer convex face. The rotation axis of the outer convex face and the rotation axis of the positioning protruding ring coincide with each other. The thickness of the outer convex face of the lens is set to be B. The front section part with the thickness being B / 3 and from the top of the outer convex face to one side of the positioning protruding ring is an ellipsoid face, and the rear section part with the thickness being 2B / 3 is a paraboloid. The joint between the ellipsoid-face-shaped front section part and the paraboloid-shaped rear section part is in smooth transition. The system is good in illumination effect, high in illumination degree and clear in vision; besides, the light shape of emitted light is good, and brightness and luminous efficacy are higher.

Description

technical field [0001] The invention belongs to the technical field of automobile lighting, and in particular relates to a high-efficiency LED double-chip far and near light integrated automobile headlight optical system. Background technique [0002] In the prior art, the headlights of automobiles generally use reflectors to focus light, and the light after being concentrated by the reflector cups is used to focus again with a lens when it exits, so that the light in front of the car reaches a certain illuminance value, thereby providing The driver provides lighting. However, there are the following defects in the prior art: after the light is collected by the reflective cup, there is a defect of uneven light. In the prior art, bumps are usually added to the inner surface of the reflective cup to improve the light output effect, but this structure will lead to bright light. Spots, poor lighting effect. [0003] Therefore, how to obtain a car headlight with a good lighting...

AI Technical Summary

Problems solved by technology

However, there are the following defects in the prior art: after the light is collected by the reflective cup, there is a defect of uneven light. In the prior art, bumps are usually added to the inner surface of the reflective cup to improve the light output effect, but this structure will lead to bright light. Spots, poor lighting effect

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