Automobile lamp light source, lens and manufacturing method for lens

Abstract

The invention discloses an automobile lamp light source. The automobile lamp light source comprises a lens and an LED lamp bead; an incident surface of the lens is a plane; and an exit surface of the lens comprises a first exit curved surface, a second exit curved surface and a third exit curved surface, wherein the first exit curved surface is used for forming a light spot below the horizontal cut-off line, the second exit curved surface is used for forming a 15-degree angle cut-off line, the third exit curved surface is used for forming a distance-light central light spot, and the focal point of the first exit curved surface and the focal point of the second exit curved surface coincide. A manufacturing method for the lens comprises the steps that a modeling calculation formula of the lens undergoes program input through the Matlab software to generate a data point file; then the data point file is imported into the mechanical software to undergo point stitching and produce a file; and the stitched file is imported into the optical software LucidShape to undergo optical regulation simulation and adjustment. According to the automobile lamp light source, the lens and the manufacturing method for the lens, a reflection cup and a baffle are eliminated, and therefore the structure of an automobile lamp is simpler, and the production cost is lower.

Description

technical field [0001] The invention relates to an LED vehicle lamp, in particular to a vehicle light source, a lens and a manufacturing method of the lens. Background technique [0002] Existing car lights also have integrated far and near light, and their optical systems can be divided into transmissive and direct. The projected lighting structure is composed of LED, reflector, aspherical lens and light-shaped baffle. The coordinate origin is at the center of the LED light-emitting surface, that is, the center of the LED light-emitting surface is the coordinate origin; the first point of the reflector (ellipsoid reflector) The focal point is the same as the origin of the coordinates. The light emitted by the LED is reflected by the ellipsoidal reflector and converges at the second focal point of the reflector. After the light is blocked by the light-shaped baffle, the light is refracted to the front of the vehicle through the aspheric lens, forming a regulation The cut-of...

AI Technical Summary

Problems solved by technology

Disadvantages of projection optical system: 1. The processing technology of the reflective bowl is cumbersome, and it needs electroplating, which causes a lot of pollution; 2. When designing the low beam light, it needs to add baffles to realize it, and the light utilization rate is low; 3. The design of the high beam light Sometimes it needs to be realized by switching the motor, and the structure is more complicated

Disadvantages of the direct optical system: 1. A baffle is needed to assist in the low beam cut-off line, the structure is complex, and the light utilization rate is low; 2. Other lenses or optical parts are needed to assist the supplementary light to realize the low beam; 3. Optical parts It is not integrated with the low beam, and needs to be processed separately, and the production and processing are complicated

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