مطالعه و بهينه سازي پارامترهاي كيفيت تصوير دوربين فرابنفش

Study an‎d Optimization of Image Quality Parameters of Ultraviolet Camera

فيزيك

Ultraviolet cameras play an important role in scientific, industrial, military, environmental, etc. applications due to their ability to capture images at wavelengths shorter than visible light, an‎d with the development of new technologies, they have become a vital tool in the qualitative an‎d quantitative analysis of many natural an‎d artificial phenomena. In this research, the design an‎d simulation of an imaging system in the ultraviolet region was carried out using ZEMAX software. The main goal was to investigate the optical performance of the camera an‎d analyze image quality indicators such as MTF, NIRS, dot plot, etc. The optical design was carried out by considering the solar blind spectral range an‎d the limitations of transparent materials in this region. The overall results show that the careful selec‎tion of optical materials, optimization an‎d appropriate adjustment of the radius of curvature an‎d the distances between elements play a key role in improving image quality. We also continued to model the atmosphere using MODTRAN software an‎d examined the ultraviolet radiation emission an‎d absorption graphs in different environmental conditions. Analysis of the graphs shows that with increasing altitude, the amount of ultraviolet radiation also increases. We also eva‎luated the NIRS parameter. Studies show that reducing visibility reduces the signal-to-noise ratio an‎d, as a result, reduces the NIRS parameter.

4