To determine the reflection from a two layer anti-reflection film on glass the ideas and terminology of network analysis are introduced. Those parts of network theory to be used are briefly reviewed. This theory is shown to provide a clear physical picture of the field changes which occur with varying film parameters. It is shown that there is a relation connecting these parameters which defines an optimum design for best bandwidth. This design yields a reflection curve having two points of zero reflection and in a typical case gives less than 0.005 reflectivity over a range extending well beyond the visible spectrum at both ends. If, because of physical limitations, the optimum proves to be unattainable, then the conditions for closest approach are outlined.
© 1948 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Fabrizio Frezza and Nicola Tedeschi
J. Opt. Soc. Am. A 32(8) 1485-1501 (2015)
Amit Mizrahi and Levi Schächter
Opt. Express 12(14) 3156-3170 (2004)
J. Opt. Soc. Am. 51(9) 967-974 (1961)