Design of a high uniform collimation illumination system for near field measurement

Abstract

In this paper, focusing on the needs of near-field measurement lighting, a lighting system with high collimation and uniformity is designed, using filament high-heat illuminant as radiation source. The general design idea of dividing the illumination system into “collimating optical cavity” and “homogenizing optical cavity” is put forward. The design process of “collimating optical cavity” is given, and two different structural forms of “homogenizing optical cavity” are analyzed and the design results are given. The lighting effect is obtained by using simulation software, and the established parameters are achieved.

Xenon Lamp based Broadband Light Source with a High-uniform Beam Profile using an Ellipsoid Reflector

“…At present, the uniform distribution is obtained simply with a laser source. Some technologies can be mentioned as binary optical element shaping, homogenizer diffractive optic elements, optical fiber shaping and aspheric surface shaping can rearrange the beam distribution from Gaussian profile to uniform profile [2]. However, in some broadband spectrum inspection experiments, the required characteristics of the illumination system are wide spectrum range, good collimation, good uniformity and high power.…”