Surface-relief structures having the form of an array of modified pyramids (having curved rather than flat triangular shown to produce an index-matching layer that will reduce surface reflection by several orders of sides) are Such structures are equivalent to a quintic (fifth-order polynomial) gradient-index layer, which has magnitude. been shown to be near optimum for reducing reflection at dielectric interfaces.
© 1991 Optical Society of America
Original Manuscript: August 2, 1990
Manuscript Accepted: November 1, 1990
Published: March 1, 1991
William H. Southwell, "Pyramid-array surface-relief structures producing antireflection index matching on optical surfaces," J. Opt. Soc. Am. A 8, 549-553 (1991)