Manufacturing a cold light mirror by evaporating ZnS and SiO alternately in an O.sub.2 atmosphere
First Claim
1. A METHOD OF MANUFACTURING A CONCAVE COLD LIGHT MIRROR BY COATING A CURVED SURFACE OF A TRANSPARENT SUPPORT WITH A PLURALITY OF 1/4 A-LAYERS OF ALTERNATELY A MATERIAL HAVING A RELA TIVELY HIGH REFRACTIVE INDEX AND A MATERIAL HAVING A RELTAIVELY LOW REFRACTIVE INDEX BY MEANS OF VAPOUR DEPOSITION IN AN ATMOSPHERE HAVING A PRESSURE SUCH THAT THE VAPOUR JET IS DISPERSED IN THE SPACE BETWEEN THE VAPOUR SOURCE AND THE SURFACE TO BE COATED, CHARACTERIZED IN THAT A CURVED SURFACE IS ALTERNATELY PROVIDED WITH LAYERS HAVING A RELATIVELY HIGH REFRACTIVE INDEX AND RELATIVELY LOW REFRACTIVE INDEX BY MEANS OF VAPOUR DEPOSITION WITH ALTERNATE ZNS AND SIO IN AN OXYGEN ATMOSPHERE AT A PRESSURE AT WHICH THE VAPOUR JETS ARE DISPERSED
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Accused Products
Abstract
A method of manufacturing a concave cold light mirror by coating a curved surface of a transparent support with a plurality of 1/4 lambda -layers of alternately ZnS and SiO by means of vapour deposition in an oxygen atmosphere at the pressure at which the vapour jets are dispersed between the surface to be coated by vapour deposition and the vapour sources.
15 Citations
2 Claims
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1. A METHOD OF MANUFACTURING A CONCAVE COLD LIGHT MIRROR BY COATING A CURVED SURFACE OF A TRANSPARENT SUPPORT WITH A PLURALITY OF 1/4 A-LAYERS OF ALTERNATELY A MATERIAL HAVING A RELA TIVELY HIGH REFRACTIVE INDEX AND A MATERIAL HAVING A RELTAIVELY LOW REFRACTIVE INDEX BY MEANS OF VAPOUR DEPOSITION IN AN ATMOSPHERE HAVING A PRESSURE SUCH THAT THE VAPOUR JET IS DISPERSED IN THE SPACE BETWEEN THE VAPOUR SOURCE AND THE SURFACE TO BE COATED, CHARACTERIZED IN THAT A CURVED SURFACE IS ALTERNATELY PROVIDED WITH LAYERS HAVING A RELATIVELY HIGH REFRACTIVE INDEX AND RELATIVELY LOW REFRACTIVE INDEX BY MEANS OF VAPOUR DEPOSITION WITH ALTERNATE ZNS AND SIO IN AN OXYGEN ATMOSPHERE AT A PRESSURE AT WHICH THE VAPOUR JETS ARE DISPERSED
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2. Concave cold light mirrors obtained by the method as claimed in claim 1.
Specification
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Current AssigneeAugustinus Petrus Jozephus Swinkels, Jan Willem Harmsen
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Original AssigneeAugustinus Petrus Jozephus Swinkels, Jan Willem Harmsen
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InventorsHarmsen, Jan Willem, Swinkels, Augustinus Petrus Jozephus
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Primary Examiner(s)Martin, Jr., Roland E.
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Assistant Examiner(s)Schilling, Richard L.
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Application NumberUS05/311,937Time in Patent Office1,107 DaysField of Search117/33.3,35V,35R,16R,16A 350/311,296US Class Current359/884CPC Class CodesC03C 17/347 comprising a sulfide or oxy...
