Many applications in various fields require uniform illumination from light sources, for example, in medical imaging in the biophotonics area. In this work, the design and application of an annular light-emitting diode array capable of producing a homogeneous irradiance pattern is presented. As part of the design process, software that allows the simulation of the irradiance pattern as a function of the LED’s radiant intensity distribution, and the position and inclination angle of the LEDs, was developed and validated. Based on the simulation results, a source that produces homogeneous illumination over an area of 20 mm in diameter, where the lowest irradiance is more than 94% of the maximum irradiance, was constructed and tested in real conditions. The simulation method and theoretical calculations on which the array is based can be applied to the design of sources for other applications where a homogeneous irradiance is required.

各个领域的许多应用都需要光源的均匀照明，例如在生物光子学领域的医学成像中。在这项工作中，提出了一种能够产生均匀辐照图案的环形发光二极管阵列的设计和应用。作为设计过程的一部分，开发并验证了允许根据LED的辐射强度分布以及LED的位置和倾斜角度来模拟辐照度模式的软件。根据模拟结果，构造并测试了在直径20毫米的区域产生均匀照明的光源，该光源的最低辐照度大于最大辐照度的94％，并在实际条件下进行了测试。