Abstract
In Part I, it was shown that by interposing a set of rotating sector masks between the vapor source and the substrate of a conventional optical coating plant it is possible to deposit films and multilayer filters having variable thickness. A particular case is demonstrated to yield circular variable filters in which a disk substrate is coated so as to have film thickness vary with angular position in a linear fashion over a range of 180°.
© 1965 Optical Society of America
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