Reactive low-voltage ion plating of optical coatings on ophthalmic lenses

K. Balasubramanian; Jeff Richmond; X. Q. Hu; Karl H. Guenther

doi:10.1117/12.50484

1 December 1991 Reactive low-voltage ion plating of optical coatings on ophthalmic lenses

K. Balasubramanian, Jeff Richmond, X. Q. Hu, Karl H. Guenther

Proceedings Volume 1529, Ophthalmic Lens Design and Fabrication; (1991) https://doi.org/10.1117/12.50484
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Reactive low voltage ion plating (RLVIP) produces dense and hard coatings even on unheated substrates. These qualities are highly desirable for coating of plastic lenses. However, the thermal expansion coefficient of these dense coatings is much lower than that of plastic substrates. Hence, even a moderate temperature rise during deposition puts the coatings under extreme compressive stress because of the subsequent shrinking of the substrate during cool down. We report our experience and encouraging results with this coating process for the antireflection coating of ophthalmic lenses.

Citation Download Citation

K. Balasubramanian, Jeff Richmond, X. Q. Hu, and Karl H. Guenther "Reactive low-voltage ion plating of optical coatings on ophthalmic lenses", Proc. SPIE 1529, Ophthalmic Lens Design and Fabrication, (1 December 1991); https://doi.org/10.1117/12.50484

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