Thick-wall part optical system with light incident collimation plane and cylindrical stripes

Abstract

The invention provides a thick-wall part optical system with a light incident collimation plane and cylindrical stripes. The thick-wall part optical system comprises a light source and a thick-wall part; the thick-wall part is provided with a light incident collimation plane, a left draft angle inclined surface, a right draft angle inclined surface, a left side wall, a right side wall, a front light-emitting surface, a chamfer I, a chamfer II, a chamfer III, a chamfer IV and a hole digging optical surface; the cylindrical stripes are arranged on the light incident collimation surface; light emitted by a light source at a focus is emitted from the front light-emitting face after the light-emitting direction is adjusted through the cylindrical stripes on the light-incident collimation face and the light is diffused, the dark space problem caused by chamfers and draft angles due to precision limitation of the manufacturing and machining process is solved, the uniformity of the thick-wallpart in the vertical direction is improved, and then the thick-wall part with a thicker shape can be designed. The uniformity of the thick-wall part in the horizontal direction can be improved throughthe cylindrical stripes on the optical surface of a dug hole; meanwhile, the light energy distribution of the central area and the light energy distribution of two sides tend to be consistent, the optical uniformity of the system is improved, and unnecessary light energy efficiency waste is reduced on the premise of meeting laws and regulations.

Description

technical field [0001] The invention relates to the technical field of automobile lighting, in particular to an optical system of thick-walled parts with cylindrical stripes added to the incident light collimating surface. Background technique [0002] Thick-walled parts are a new technology that puts the light source at the focal point to emit light, and the light is collimated through the thick-walled area, and then diffused through the front surface stripes to achieve a uniform display effect. It is widely used in civilian high-end cars, headlights, There are all rear lights, which are mostly used for turn signals, daytime running lights, position lights, brake lights, etc., mainly using LED light sources, which have gradually become the main configuration of car lights. [0003] With the trend of car lights, the diversity of shapes is becoming more and more important in the field of car lights, and the application of thick-walled parts in car lights will become more and ...

AI Technical Summary

Problems solved by technology

However, LED light energy is distributed in a Gaussian curve with the divergence angle of the light. The larger the divergence angle, the lower the light energy distribution. Based on the precision limit of the current manufacturing process, all thick-walled parts must leave a certain amount of inversion at the edge of the draft surface. Corner and draft angle, uneven distribution of light energy and chamfering will cause defects in the collimation system, resulting in obvious dark areas on the light-emitting surface corresponding to the position of the chamfering and draft angle, resulting in a decrease in the uniformity of thick-walled parts in the vertical direction phenomenon, the thickness of thick-walled parts is also greatly restricted due to the influence of uniformity in the vertical direction. For thick-walled parts with a thickness exceeding 8mm, there will be defects in the uniformity in the vertical direction, and the greater the thickness, the greater the uniformity. Poor, the thickness of the current thick-walled parts is basically less than 10mm. However, with the new trend of OEMs to complicate the shape and function of automobile lights, the thickness of the existing thick-walled parts can no longer be satisfied, which also brings uniformity. question

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