Convolution as a model of the LED irradiance pattern

Claudia A. Vidales-Basurto; Iván Moreno-Hernández

doi:10.1117/12.2632590

3 October 2022 Convolution as a model of the LED irradiance pattern

Claudia A. Vidales-Basurto, Iván Moreno-Hernández

Author Affiliations +

Proceedings Volume 12215, Optical Modeling and Performance Predictions XII; 122150L (2022) https://doi.org/10.1117/12.2632590
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Conference Poster

Abstract

Using a digital image of a distribution of light-emitting diodes (LEDs) or multichip LED, we developed a method to simulate its oblique irradiance spatial distribution on a flat target located at short distances (<20mm). This light oblique irradiance pattern is produced when the LEDs plane or target plane is tilted by an arbitrary angle. The method uses convolution operation between the multichip LED and a special kernel which generates the rotation simulation of the target/LED´s plane. We assumed that LED radiant intensity is directly proportional to the digital imagen. Thus, our method does not requires knowledge about LED data sheet and is not restricted for Lambertian emitters. The model provides the irradiation spatial pattern in function of the irradiation distance for a determined rotation angle. The resulting irradiance patterns on the target, using our method, were pretty similar to the obtained on laboratory experiments.

Citation Download Citation

Claudia A. Vidales-Basurto and Iván Moreno-Hernández "Convolution as a model of the LED irradiance pattern", Proc. SPIE 12215, Optical Modeling and Performance Predictions XII, 122150L (3 October 2022); https://doi.org/10.1117/12.2632590

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