Hard Overcoats

Harro W. D. Wahl

doi:10.1117/12.955631

14 November 1977 Hard Overcoats

Harro W. D. Wahl

Proceedings Volume 0115, Advances in Replicated and Plastic Optics; (1977) https://doi.org/10.1117/12.955631
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

Abstract

This paper deals with the various approaches taken to achieve hard overcoats or all dielectric optical thin film multilavers in replicated optics. It concludes that not much can be done to improve on conventional coating methods. The prerequisites for hard dielectric films still are a good vacuum and elevated substrate temperatures. To make these coatings readily available for reflective or refractive replicated components, a suitable release layer has to be found which will be compatible with temperatures of at least 300°C. at 1 x 10-6 torr. In addition, the release layer will have to be resilient enough in order to offer minimum adhesion to high surface tension dielectric stacks of any number of layers.

Citation Download Citation

Harro W. D. Wahl "Hard Overcoats", Proc. SPIE 0115, Advances in Replicated and Plastic Optics, (14 November 1977); https://doi.org/10.1117/12.955631

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