[15p-PA3-1~25] 3.7 Optical measurement, instrumentation, and sensor

[15p-PA3-8] Development of BTDF measurement device in the ultraviolet wavelength region and verification of light diffusion control method

〇Shingo Kusano¹, Takayuki Shibuya¹, Kengo Taira¹, Kazutaka Isoda¹, Yuka Miura¹ (1.TIRI)

Keywords:

BTDF,ultraviolet,ground glass

Transmissive diffusers, such as ground glass, are widely used in the development of UV-based products. While the Bidirectional Transmittance Distribution Function (BTDF) is commonly used as a metric to evaluate light diffusion performance, conventional sequential measurement systems often lack UV compatibility and require excessive time for high-angular-resolution measurements. In this study, we developed a UV-compatible BTDF measurement system capable of rapid, high-angular-resolution measurements and investigated the correlation between the processing parameters of ground glass and its BTDF in the UV range.