Luminescent screen
First Claim
1. A luminescent screen comprising a substrate having a luminescent layer of a monocrystalline structure said layer including at least one activator, characterized in that the activated layer and the substrate together constitute a single self-supporting monocrystalline body, the activated layer being provided with a pattern of V-shaped grooves.
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Accused Products
Abstract
A luminescent screen consisting of one self-supporting monocrystalline body and having a luminescent surface layer with V-shaped grooves. Such screens may be exposed to radiation having a larger energy than was usual so far with phosphor screens and have a very large luminous efficiency. In addition the resolving power is very large since there are no particles with limiting dimensions. Such screens may be used for displaying very bright pictures suitable for projection on a projection screen.
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Citations
8 Claims
- 1. A luminescent screen comprising a substrate having a luminescent layer of a monocrystalline structure said layer including at least one activator, characterized in that the activated layer and the substrate together constitute a single self-supporting monocrystalline body, the activated layer being provided with a pattern of V-shaped grooves.
Specification