IP Library › Granted Patent US 7,015,641
Granted Patent B2
US 7,015,641 · App. 10/708,886 · Granted Mar 21, 2006

Reduced veiling glare cathode window

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Quick Facts
Patent No.
US 7,015,641
App. No.
10/708,886
Granted
Mar 21, 2006
Kind
B2
Abstract

A faceplate (F) for an image intensifier tube ( 10 ) for reducing veiling glare begins as a blank ( 36 ) of optical material of a desired glass composition having a shape that conforms substantially to a configuration of the faceplate (F) to be produced. An extraneous removable aperture step portion ( 54 ) is formed on the glass blank ( 36 ). The glass blank is blackened ( 41 ) and the aperture step portion ( 54 ) is removed creating a desired transmissive aperture ( 34 ) through the glass blank ( 36 ).

Claims (6)

1. A faceplate for an image intensifier tube for reducing veiling glare, comprising:

a blackened blank of optical material of a desired glass composition having a shape that conforms substantially to a configuration of the faceplate to be produced includes processed opposing upper and bottom surfaces;

the processed upper surface of the glass blank being formed having a blackened ring about a light transmissive portion; the light transmissive portion of the processed upper surface being formed by removal of a blackened step portion extending from the upper surface; and,

the processed bottom surface having substantially all blackening removed creating a desired aperture through the glass blank through which aperture light may pass.

2. The invention of claim 1 wherein the upper and lower surfaces are essentially parallel.

3. The invention of claim 1 wherein the upper and lower surfaces are flat.

Assignments (6)
CHANGE OF NAME Recorded Apr 13, 2023
From: L-3 COMMUNICATIONS CORPORATION
To: L3 TECHNOLOGIES, INC.
Reel/Frame 063326/0654 →
CORRECTIVE ASSIGNMENT TO ADD OMITTED NUMBERS FROM THE ORIGINAL DOCUMENT, PREVIOUSLY RECORDED ON REEL 023180, FRAME 0884. Recorded May 16, 2011
From: NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC.
To: L-3 COMMUNICATIONS CORPORATION
Reel/Frame 026423/0191 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REPLACE SCHEDULE IN ORIGINAL ASSIGNMENT PREVIOUSLY RECORDED ON REEL 023180 FRAME 0962. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Mar 3, 2011
From: NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC.
To: L-3 COMUNICATIONS CORPORATION
Reel/Frame 025897/0345 →
CHANGE OF NAME Recorded Sep 4, 2009
From: LITTON SYSTEMS, INC.
To: NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC.
Reel/Frame 023180/0884 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 4, 2009
From: NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC.
To: L-3 COMMUNICATIONS CORPORATION
Reel/Frame 023180/0962 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 30, 2004
From: TUCKER, JAY SCOTT
To: LITTON SYSTEMS, INC.
Reel/Frame 014503/0628 →