US1590971A - Method of and apparatus for producing sharp rontgen imagen - Google Patents

Method of and apparatus for producing sharp rontgen imagen Download PDF

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Publication number
US1590971A
US1590971A US497012A US49701221A US1590971A US 1590971 A US1590971 A US 1590971A US 497012 A US497012 A US 497012A US 49701221 A US49701221 A US 49701221A US 1590971 A US1590971 A US 1590971A
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US
United States
Prior art keywords
cathode
rays
tube
rontgen
target
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 - Lifetime
Application number
US497012A
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English (en)
Inventor
Goetze Otto
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Individual
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Individual
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Publication date
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Publication of US1590971A publication Critical patent/US1590971A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor

Definitions

  • Biintgen proJection hasnotbeen by means of the rays which emanate from the anticathode at an angle of about 45 but by means ofrays which the anticathode in asuhstantially par- Therebyatleastinone direction the source of rays appears to be shortenedtoav smallarea, andthetube u'hasmu sled ,to thatof-a'tuhehavob ect of the resent improvements is to provide a moth which makes use of a tube having anincandescent so cathode andan unsharp focal spot and yet produces which are sharp in anydi- Wi this object in view my invention consists in using a Riintgen tube having an t cathode producing .on I the anticathodea focal spot in the form'ot '2 is a vertical section ofihe art of cent cathode and the anticathode, and
  • Fig. 8 is a similar section taken at right fernng nowto Fig. lit will bees-1 thatthe target or. hand providing of the rags and on the to be'produced.
  • Figs. 2 and 3 have shown a preferred exam le of the essential parts of a Riintgen.
  • tu e having an incandescent cathode and collecting means (Coolidgetube), which in a simple way ermits ⁇ the production of'a source of rays in the form of a band.
  • Coolidgetube incandescent cathode and collecting means
  • the incandescent wire 1 is not disposed in the usual way and in the formof a coil, but I prefer to arrange the same along a straight'lineand in one direction, and it is surrounded by a collector 2, havin the form of an elon gated box:
  • a collector 2 havin the form of an elon gated box:
  • cathode extends in a substantially straight line located in a planeperpendicular to the plane of the anticathode, and. that the cathode and the anticathode converge in such perpendicular plane.
  • the collector co-operating with the said cathode is in the form of an elongated box open toward the anticathode,'the lonfitudinal axis of said box being parallel tot at of the cathode.
  • cathode must be inclined relatively to the axis of the tube at a greater angle than is usual in other tubes, as will be understood from an inspection of-the drawing.
  • Rontgen images which consists in causing the emission of Rentgen rays from a focal spot havin a length great as compared with its width, and producing an image from such of the rays emanating from said spot as are projected therefrom in a direction nearly coincidin with the general direction of the spot.
  • An X-ray tube having a plane'anticathode, an incandescent cathode constructed to produce, in conjunction with said anti- *to less than half the actual length of said length 0 said focal target, said means comprising a plane target shaped as a narrow band, a cathode consisting of a straight incandescent filament, said target and filament lying in a common plane at an angle of less than 45 degrees to each other, and a collector partially surrounding the cathode.
  • an X-ray tube means for obtaining, in the equatorial zone of the tube, a pro jection of the target which is foreshortened to less than half the actual length of sa d target, said means comprising a target 1n the form of a narrow band, a cathode con sistingof an incandescent filament extending in a substantially straight line, said target and cathode bein positioned in a common plane at an ang e of less than45 degrees'to each other, and a collector partially surrounding the cathode.
  • An X-raytube having a plane target in the form of a narrow band, an elongated incandescent cathode, said target and cathode being disposedin a common plane, a
  • the active surface of said target being inclined at an angle of more than 45' degrees to the longitudinal axis of the tube, so as to obtain, in the equatorial zone of the tube, a projection of "the target which is foreshortened to less than half the actual length In testimony signature.

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  • X-Ray Techniques (AREA)
US497012A 1918-02-01 1921-08-30 Method of and apparatus for producing sharp rontgen imagen Expired - Lifetime US1590971A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1590971X 1918-02-01

Publications (1)

Publication Number Publication Date
US1590971A true US1590971A (en) 1926-06-29

Family

ID=7736643

Family Applications (1)

Application Number Title Priority Date Filing Date
US497012A Expired - Lifetime US1590971A (en) 1918-02-01 1921-08-30 Method of and apparatus for producing sharp rontgen imagen

Country Status (3)

Country Link
US (1) US1590971A (en, 2012)
FR (1) FR532849A (en, 2012)
NL (1) NL7168C (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725483A (en) * 1950-05-20 1955-11-29 Westinghouse Electric Corp Inspection of electron phosphor screens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2725483A (en) * 1950-05-20 1955-11-29 Westinghouse Electric Corp Inspection of electron phosphor screens

Also Published As

Publication number Publication date
NL7168C (en, 2012)
FR532849A (fr) 1922-02-13

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