Design of large area homogenized light source

Jun Deng; Jia Sun; Bin Zou

doi:10.1117/12.2574332

5 November 2020 Design of large area homogenized light source

Jun Deng, Jia Sun, Bin Zou

Proceedings Volume 11567, AOPC 2020: Optical Sensing and Imaging Technology; 115670B (2020) https://doi.org/10.1117/12.2574332
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

Aiming at the problem of unclear results and low accuracy of ultra-high speed photographic measurement such as the transient process of glass crack breaking at the end of projectile, a laser source with high power and uniform facula was designed, and the results were verified by software simulation and field test. First, the specific scheme was designed according to the parameters of high-speed camera. High power laser beam was generated by semiconductor laser array, and the compound eye lens was used to divide and superimpose the shaping beam to form uniform rectangular facula. Then, the mathematical model of the facula and the energy model of the facula were established to analyze the homogenization mechanism of the large area rectangular facula. After that, Zemax software simulation proved that the size, uniformity and illumination of the facula could meet the needs of high-speed photography. Finally, the experimental verification proved that the facula could compensate the background light. The final results showed that the designed large area light source had 425 W power and 0.9203 facula uniformity. It basically satisfied the requirements of brightness and uniformity of background light source for high speed photographic detection.

Citation Download Citation

Jun Deng, Jia Sun, and Bin Zou "Design of large area homogenized light source", Proc. SPIE 11567, AOPC 2020: Optical Sensing and Imaging Technology, 115670B (5 November 2020); https://doi.org/10.1117/12.2574332

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