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Proceedings Paper

Colour neutral antireflection coatings for strongly curved lenses using organic nanostructures as low-n template
Author(s): P. Munzert; H. Knopf; F. Rickelt; U. Schulz
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Paper Abstract

To effectively improve color neutrality of antireflection (AR) coatings, a layer with a very low refractive index (n < 1,3) must be used as the top layer. However, solid materials with such a low refractive index (n) does not exist. The deposition of low molecule weight organic materials as compact films, and a subsequent plasma etching procedure on these films, offered the possibility to produce a nanostructured layer with a very low refractive index as top layer for an antireflection coating. Strongly curved aspheric lenses were coated with such a super-broadband AR design (ARplas2) and the antireflection performance was measured at different locations on the lens. An average reflection < 0,25 % over the full visible wavelength range was measured even in the outermost region of the curvature.

Paper Details

Date Published: 5 June 2018
PDF: 6 pages
Proc. SPIE 10691, Advances in Optical Thin Films VI, 106910Z (5 June 2018); doi: 10.1117/12.2311295
Show Author Affiliations
P. Munzert, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
H. Knopf, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
F. Rickelt, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
U. Schulz, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)


Published in SPIE Proceedings Vol. 10691:
Advances in Optical Thin Films VI
Michel Lequime; H. Angus Macleod; Detlev Ristau, Editor(s)

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