GB657140A - Improvements in or relating to x-ray tubes - Google Patents

Improvements in or relating to x-ray tubes

Info

Publication number
GB657140A
GB657140A GB30006/48A GB3000648A GB657140A GB 657140 A GB657140 A GB 657140A GB 30006/48 A GB30006/48 A GB 30006/48A GB 3000648 A GB3000648 A GB 3000648A GB 657140 A GB657140 A GB 657140A
Authority
GB
United Kingdom
Prior art keywords
tube
anticathode
ray tubes
cylinder
screen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB30006/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB30006/48A priority Critical patent/GB657140A/en
Publication of GB657140A publication Critical patent/GB657140A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/147—Spot size control

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

657,140. X-ray tubes. EHRENBERG, W., and SPEAR, W. E. Nov. 18, 1948, No. 30006. [Class 39 (i)] An X-ray tube has an electron-optical system designed to give a very fine focus on the anticathode. A hairpin filament 1 is positioned inside a cylindrical tube 2 which carries a cathode screen 3, the tube 2 extending beyond the screen. The whole, including the anticathode 4, is surrounded by a cylinder 5. The fila- ment may have a small positive bias with respect to tube 2. Cylinder 5 has substantially the same potential as tube 2. Suitable values for dimensions a, b, c and d are given by way of example. In the arrangement of Fig. 2 (not shown), an additional electrode having a central aperture not very different from that of tube 2 is placed close to the latter.
GB30006/48A 1948-11-18 1948-11-18 Improvements in or relating to x-ray tubes Expired GB657140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30006/48A GB657140A (en) 1948-11-18 1948-11-18 Improvements in or relating to x-ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30006/48A GB657140A (en) 1948-11-18 1948-11-18 Improvements in or relating to x-ray tubes

Publications (1)

Publication Number Publication Date
GB657140A true GB657140A (en) 1951-09-12

Family

ID=10300722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30006/48A Expired GB657140A (en) 1948-11-18 1948-11-18 Improvements in or relating to x-ray tubes

Country Status (1)

Country Link
GB (1) GB657140A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973337C (en) * 1951-11-08 1960-01-28 Licentia Gmbh X-ray tube for point-like focal point

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973337C (en) * 1951-11-08 1960-01-28 Licentia Gmbh X-ray tube for point-like focal point

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