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Title: Non-birefringent thallium iodide thin films for surface protection of halide optical elements

Abstract: A method of providing non-birefringent cubic thallium iodide thin films on potassium chloride optical elements. The method of this invention is to deposit thin film alternating layers of thallium iodide and a buffer material such that a composite coating is obtained. The optic buffer material may be lead fluoride. The thallium iodide film made by the method of this invention is highly transparent, insoluble and non-scattering.


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Inventors: Moravec, Thomas J. (Eden Prairie, MN, US)
Skogman, Richard A. (Minneapolis, MN, US)

Application Number: 952764
Filing Date: 1978-10-19
Publication_date: 1979-11-27
Assignee: Honeywell Inc. (Minneapolis, MN)
Primary Class(es): 427/160 427/162, 427/164
Other Classes:
US Patent Ref:
3959548May, 1976Bernal427/164.
4009300Feb, 1977Chaffin427/162.
4110489Aug, 1978Chaffin et al.427/160.

Other Refs:
Primary Examiner: Hoffman, James R.
Assistant Examiner:
Attorney: Dahle; Omund R.