Method for quantitatively evaluating light distribution performance of automotive headlamp

Abstract

The invention relates to the field of motor vehicle lighting, and especially relates to a headlamp performance evaluation method. A method for quantitatively evaluating the light distribution performance of an automotive headlamp comprises the following steps: establishing an automotive headlamp light distribution database and dividing the automotive headlamp light distribution performance into a plurality of grades; calculating relative indexes of performance parameters of all automotive headlamps; performing weighted calculation on the relative indexes to obtain the composite score of the light distribution performance of each headlamp; obtaining the composite score of the light distribution performance of a headlamp to be evaluated through experiment; and comparing the composite score of the light distribution performance of the headlamp to be evaluated with the composite scores of the light distribution performance of the headlamps in the database to obtain the grade of the headlamp to be evaluated. According to the invention, a set of standards is set, multiple performance parameters of the light distribution performance of a headlamp are synthesized into a visual performance grade according to the standards, and a result of performance comparison between different headlamps can be obtained directly through quantitative detection. Thus, ordinary users can choose headlamps visually based on the result of comparison, and the quality of the headlamps is evaluated objectively and quantitatively.

Description

technical field [0001] The invention relates to the field of motor vehicle lighting, in particular to a method for evaluating the performance of a headlight. Background technique [0002] At present, my country's national compulsory certification for automotive headlight products is divided into three standards according to the type of light source of the headlight. Due to the differences in the detection technology of the three standards, the performance of headlamp products with different light sources cannot be compared. Moreover, the three standards only stipulate the lower limit of the illuminance requirements of the headlights, and can only make a qualitative judgment on whether the light distribution of the headlights is qualified or not, and cannot further evaluate the degree of excellence of the light distribution performance of the headlights that meets the qualified requirements. Compare. [0003] More and more research institutions and automobile manufacturers ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a quantitative evaluation method for the light distribution performance of automobile headlamps. Multiple performance parameters of light distribution performance of headlights are integrated into an intuitive performance level, so that ordinary users can intuitively use the comparison results to select headlights, and objectively and quantitatively evaluate the quality of each headlight

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