Abstract

Uncoated surfaces of high index glasses when cemented to form lens doublets have inferior antireflection properties to doublets of low index glass. This can be overcome by the application of a single layer coating of aluminum oxide prior to cementing.

© 1990 Optical Society of America

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References

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  1. K. H. Guenther, “Influence of Substrate Surface on the Performance of Optical Coatings,” Thin Solid Films 77, 239–247(1981).
    [CrossRef]
  2. R. R. Willey, “Graphic Description of Equivalent Index Approximations and Limitations,” Appl. Opt. 28, 4432–4435 (1989).
    [CrossRef] [PubMed]

1989

1981

K. H. Guenther, “Influence of Substrate Surface on the Performance of Optical Coatings,” Thin Solid Films 77, 239–247(1981).
[CrossRef]

Guenther, K. H.

K. H. Guenther, “Influence of Substrate Surface on the Performance of Optical Coatings,” Thin Solid Films 77, 239–247(1981).
[CrossRef]

Willey, R. R.

Appl. Opt.

Thin Solid Films

K. H. Guenther, “Influence of Substrate Surface on the Performance of Optical Coatings,” Thin Solid Films 77, 239–247(1981).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Interface reflection of surfaces of high index (1.785) glasses SF11 and LaK21, which have been cemented with thirty waves of optical thickness 1.52 index cement.

Fig. 2
Fig. 2

Curve A, Fresnel reflection at the interface between 1.785 glass (SF11) and 1.52 cement. Curve B, reflection of the surface as in curve A if coated with one QWOT of magnesium fluoride. Curve C, reflection of the surface as in curve A if coated with two QWOTs of magneisum fluoride. Curve D, reflection of surface as in curve A if coated with one QWOT of aluminum oxide (1.64 index).

Fig. 3
Fig. 3

Interface reflection of surfaces as in Fig. 1, which have been coated with a QWOT of 1.64 index at 550 nm prior to cementing.

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