A Design Method of Optical System of Thick-walled Parts Containing Diffusion Holes Eliminating Dark Areas at Chamfers

Abstract

The invention provides a method for designing the optical system of the thick-walled part including the diffusion hole that eliminates the dark area at the chamfer, by changing the collimation hole of the existing thick-walled part into a diffusion hole, or changing the collimation surface into a diffusion hole On the surface, through the diffused hole and the effect of scattering light on the diffused surface, the area of ​​the dark area caused by the chamfering of the original collimation hole is covered by the light scattered by the diffused hole, and the coverage of the dark area is passed through It is obtained from the precise calculation of the previous design, so it can well improve and solve the problems of dark areas and unevenness in conventional optical structures. Through the combination of theory and simulation fine-tuning in the early stage, the design result is more accurate, and there is no need for additional design or process adjustment in the later stage, and the feasibility of the mold will be greatly improved; the final optical effect will also be more controllable and uniform.

Description

technical field [0001] The invention relates to the technical field of automobile lamp lighting, in particular to a design method of an optical system of a thick-walled part including diffusion holes for eliminating dark areas at chamfers. Background technique [0002] At present, it is very common to use thick-walled parts as the optical system of car lights, but based on the precision limitation of the current manufacturing process, all thick-walled parts need to have a certain chamfer at the edge position of the opening position to meet the processing requirements. The openings are usually collimation holes with collimation effect to collimate the light incident on the collimation hole from all directions into parallel light to achieve uniform output. However, on the one hand, the edge position of the opening position above The chamfer of the chamfer will cause defects in the collimation system. The light hitting the chamfer will be refracted or hit other areas, but it wi...

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a design method for the optical system of the thick-walled part that includes the diffusion hole that eliminates the dark area at the chamfer, by changing the collimation hole of the existing thick-walled part to Diffusion hole, or changing the collimation surface to a diffusion surface, through the diffusion hole and the diffusion surface to disperse the light, so that the area of ​​the dark area caused by the chamfering of the original collimation hole is covered by the light scattered by the diffusion hole , and the coverage of the dark area is obtained through the precise calculation of the previous design, so it can well improve and solve the problem of dark area and unevenness of the conventional optical structure

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