Electric lamp and discharge devices – Cathode ray tube – Plural beam generating or control
Patent
1977-02-07
1978-05-23
Chatmon, Jr., Saxfield
Electric lamp and discharge devices
Cathode ray tube
Plural beam generating or control
313302, 313304, 313420, 331 945PE, H01J 2950
Patent
active
040913066
ABSTRACT:
Thermionic filaments are arranged in an array which covers a predetermined area. A spreader electrode which may be in the form of a flat plate is placed on one side of the filaments with an anode being placed on the other side of the filaments, and an accelerator grid, focusing plate and collimation plate being placed in that order between the filaments and the anode. The anode is in the form of a foil through which the electrons pass into an area where they are utilized, such as for example a laser cavity where they are utilized to ionize the laser gas. The foil anode is supported on an apertured structure which facilitates the formation of a vacuum tight seal of the vacuum envelope containing the gun and functions as a heat sink to dissipate some of the heat energy developed in the foil. The anode support structure, focusing plate and collimating plate all have apertures formed therethrough which form a plurality of cylindrical channels, these channels covering substantially the entire surface area of the foil anode. The apertures of the support structure, focusing plate and collimation plate are aligned with each other to provide channeled pathways for the electrons between the filaments and the anode. Potentials are applied to the focusing and collimation plates to focus the electrons into circular beams which efficiently pass through the channels between the filaments and the anode with a minimum dissipation of energy in the structures forming the channels.
REFERENCES:
patent: 3702973 (1972-01-01), Daugherty et al.
patent: 3876958 (1975-04-01), Parker
patent: 3906392 (1975-09-01), Mann
patent: 3935500 (1976-01-01), Oess et al.
patent: 3940710 (1976-02-01), Lemay
patent: 3956712 (1976-05-01), Hant
Chatmon, Jr. Saxfield
Northrop Corporation
Sokolski Edward A.
LandOfFree
Area electron gun employing focused circular beams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Area electron gun employing focused circular beams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Area electron gun employing focused circular beams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-566209