| (19) |
 |
|
(11) |
EP 0 366 500 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
29.08.1990 Bulletin 1990/35 |
| (43) |
Date of publication A2: |
|
02.05.1990 Bulletin 1990/18 |
| (22) |
Date of filing: 27.10.1989 |
|
|
| (84) |
Designated Contracting States: |
|
DE GB NL |
| (30) |
Priority: |
27.10.1988 US 265368
|
| (71) |
Applicant: International Standard Electric
Corporation |
|
New York
New York 10022 (US) |
|
| (72) |
Inventor: |
|
- Phillips, Earle N.
Roanoke
VA 24018 (US)
|
| (74) |
Representative: Vaufrouard, John Charles |
|
Elkington and Fife
Prospect House
8 Pembroke Road
Sevenoaks, Kent TN13 1XR
Sevenoaks, Kent TN13 1XR (GB) |
|
| |
|
| (54) |
An image intensifier device |
(57) An image intensifier tube having a photocathode, a microchannel plate and an anode.
The anode includes a lens element with a phosphor screen deposited thereon as an output
window. The lens element may take the form of either a plano-convex or plano-concave
element and has either a spheric or aspheric curved surface. In a modified version
a plano glass element is affixed to the plano surface of the lens element. Methods
of forming the tube with the lens element are at the time the finished tube is assembled
in the intensifier device or at the time the tube is constructed.