Design method of lighting source based on multiple diffuse reflection mathematical model

The invention provides a design method of an LED uniform illumination light source based on a multi-time diffuse reflection mathematical model of a diffuse reflection free-form surface. A diffuse reflection lens is widely applied due to the specific optical performance, but efficiency of the diffuse...

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Bibliographic Details
Main Authors SUN XIANG, XU XIN, ZHU ZHENMIN, YAO PEIQI
Format Patent
LanguageChinese
English
Published 04.12.2020
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention provides a design method of an LED uniform illumination light source based on a multi-time diffuse reflection mathematical model of a diffuse reflection free-form surface. A diffuse reflection lens is widely applied due to the specific optical performance, but efficiency of the diffuse reflection lens is low, so that efficiency and uniformity of the diffuse reflection lens need to beimproved. Based on the above problems, a primary diffuse reflection mathematical model for a diffuse reflection surface is established by applying a bidirectional reflectance distribution function (BRDF) according to the light-emitting characteristics of an LED light source. Similarly, when the LED light is reflected to the diffuse reflection curved surface, the diffuse reflection surface is alsoa Lambert body, the situation of multiple times of diffuse reflection is considered, and a corresponding mathematical model is established. A nonlinear algebraic equation is solved through numericalvalues, and the diffuse ref
Bibliography:Application Number: CN202010707851