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US 4,393,322 AGranted
Image intensifier faceplate
AssigneeWarner Lambert Technologies, Inc.
InventorWalter P. Siegmund
Life of this patent
Estimating the term…
Abstract
A glass faceplate having a central area of required useful diameter surrounded by a narrow ring of opaque glass and an outer glass mounting flange. Light entering the flange or ring is prevented from reaching the central area as stray light or glare in the system and spurious reflections at the interface of the ring and central area are minimized by a refractive index match of the two innermost glasses.
Claims4
A faceplate for an image intensifier comprising the fused assembly of:
- a central glass plate having a finished edge;
- a ring of light-absorbing glass extending about said edge of said central plate;
- and
- an outer annular supporting flange of glass.
1 more element
Dependencies are inferred from the claim text.