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Proceedings Paper

Anti-Reflective Coating On Borosilicate Long Tubes Industrial Process And Quality Control
Author(s): N. Eisenberg; Y. Ben-Dor; J. P. Warschawski
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Paper Abstract

It has been shown that in order to improve the optical efficiency of a solar trough evacuated pipe used for Luz solar electricity generating systems, an appropriate low cost anti-reflective coating process should be implemented in the solar collector production line, and that a dip process is the optimal choice for this application. It is shown in this paper that pumping the coating solution out of the coating container rather than withdrawing the tubes is the most appropriate coating process for Luz's needs. The same method was employed for the second coating solution which was used both for mechanical abrasion resistance improvement and for increasing optical transmissivity. The measuring procedure for quality insurance of the coated tube was investigated thoroughly and an "in-house" technique, including solar simulation and spiral movement of the tested tube, was chosen in preference to the other standard procedures (spectrophotometry, reflectometry). The complete AR coating facility and production procedure is described and the results of the industrial process are analyzed.

Paper Details

Date Published: 5 July 1989
PDF: 13 pages
Proc. SPIE 1038, 6th Mtg in Israel on Optical Engineering, (5 July 1989); doi: 10.1117/12.951105
Show Author Affiliations
N. Eisenberg, Jerusalem College of Technology (Israel)
Y. Ben-Dor, Luz Industries Israel Ltd. (Israel)
J. P. Warschawski, Luz Industries Israel Ltd. (Israel)


Published in SPIE Proceedings Vol. 1038:
6th Mtg in Israel on Optical Engineering
Rami Finkler; Joseph Shamir, Editor(s)

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