Courtesy lamp optical system for generating optical ring and design method thereof

Abstract

The invention provides a courtesy lamp optical system for generating an optical ring and a design method thereof. The courtesy lamp optical system comprises an illuminating face and an optical array. The optical array is formed by a plurality of optical components. Each optical component comprises a light source and a circular refractor. The refractor is parallel to the illuminating face. The light source is positioned beside the illuminated face of the refractor. The illuminated face of the refractor of each optical component is positioned on the same plane. The emergent light of the light source is the parallel light. The light emitting face of the refractor is provided with i concentric toothed rings with the sawtooth-shaped section. The circle center of the toothed ring is coincided with the circle center of the refractor. The sawtooth-shaped tooth breadth is the same, and the sawtooth-shaped tooth bottom is positioned on the same plane. The courtesy lamp optical system is capable of generating an optical ring pattern on the illuminating face by a Class Fresnel refracting optical element, and generating a four-ring pattern, such as Audi brand, on the illuminating face by the combined structure of the specific illumination light source and the Class Fresnel lens array.

Description

technical field [0001] The invention relates to the technical field of lighting beautification, in particular to a welcome light optical system for generating halos and a design method thereof. Background technique [0002] Optical patterns are widely used in projection lights, door lights and welcome lights. With the continuous development of automobile technology, people have higher requirements for the humanization and fashion sense of automobiles. Door lights or welcome lights are one of the fashion elements in the car. When the car is unlocked or the door is opened, patterns or words will be generated on the ground under the rearview mirror or the door, which can not only play a role To the role of lighting, but also increase the fashion sense of the car. [0003] The current optical system produces patterns on the irradiated surface, usually using projection, such as a patented projection lamp (application number: 201410482547.X). This patent uses the projection pri...

AI Technical Summary

Problems solved by technology

The first two patterns are to set the pattern on the printing layer and the film, and when the light passes through the printing layer or the film, a large loss of light energy will occur; the third scheme is to set the pattern on the slightly diffractive element, although the light passes through the diffractive element The energy of the latter is greatly improved compared with the previous two schemes, but it still needs to rely on the projection system to realize the enlargement of the pattern, which makes the system size larger

[0004] Now there is also a method of forming light spots through free-form surface lenses. The principle is that the light emitted by the light source can achieve different shapes of light spots through the free-form surface. However, the free-form surface is complex to process and expensive.

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