A method is described for producing transmitting screens that diffuse light into small angles. With these screens, the amount of small-angle diffusion can be controlled while light loss from large-angle scattering is kept to a minimum. The diffusers are fabricated from two glass substrates that are ground, etched, and cemented together. There is a controlled mismatch between the optical index of the cement and that of the substrates. The screens were primarily designed for photolithographic camera illumination systems that involve a tradeoff between luminance and uniformity.
© 1972 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
J. Opt. Soc. Am. 50(6) 519-520 (1960)
Jill F. Goldenberg and T. Stewart McKechnie
J. Opt. Soc. Am. A 2(12) 2337-2347 (1985)
Eugenio R. Méndez, E. Efrén García-Guerrero, Héctor M. Escamilla, Alexei A. Maradudin, Tamara A. Leskova, and Andrei V. Shchegrov
Appl. Opt. 40(7) 1098-1108 (2001)