1088629-A is referenced by 3 patents.

An optical element e.g. a mirror is formed by vapour depositing layers of alternately low and high index of refraction e.g. cryolite, MgF2 or SiO2, and ZnS or TiO on a curved glass substrate in an atmosphere of neon, xenon, krypton, argon or radon, and then heating at, e.g. 400 DEG C. The glass cups 1 are first cleaned by a glow discharge and the material is vapour deposited alternately from crucibles 4, 5, whilst a holder supporting the cups is continually rotated by a wheel 14. The process is controlled by a photo-electric cell 17.

Title
Improvements in or relating to methods of vapour-depositing a plurality of thin films of material onto a curved surface
Application Number
GB19660014570 19660401
Publication Number
1088629 (A)
Application Date
April 1, 1966
Publication Date
October 25, 1967
Assignee
Philips Electronic Associated
IPC
C23C 14/24
C03C 17/23
C23C 14/24
C03C 17/245
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