GB663339A - Improvements in or relating to apparatus for producing x-ray images - Google Patents

Improvements in or relating to apparatus for producing x-ray images

Info

Publication number
GB663339A
GB663339A GB25454/49A GB2545449A GB663339A GB 663339 A GB663339 A GB 663339A GB 25454/49 A GB25454/49 A GB 25454/49A GB 2545449 A GB2545449 A GB 2545449A GB 663339 A GB663339 A GB 663339A
Authority
GB
United Kingdom
Prior art keywords
tube
amplifier
ray
image
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
GB25454/49A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB663339A publication Critical patent/GB663339A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/30—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from X-rays

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

663,339. Television. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Oct. 4, 1949 [Dec. 11, 1948], No. 25454/49. Class 40 (iii). [Also in Group XX] A television pick-up tube feeding a cathoderay tube receiver through a channel having adjustable non-linear characteristics is employed with X-ray apparatus to produce a representation of the X-ray picture having an increased contrast between predetermined portions thereof. The X-ray image of a body 1 is produced by projection of X-rays from a source 2 on to the fluorescent screen 3 of an image intensifier 4. The intensified but reduced image appearing on the viewing phosphor 5 is projected on to the photo-sensitive screen of a television pick-up tube 6, such as an image orthicon, and the output signal derived by scanning the screen passed to a cathode-ray tube 7 through a channel comprising a linear amplifier 8 and non-linear amplifier 9. Amplifier 9 has a characteristic, Figs. 2 and 3 (not shown), with a linear portion extending over a limited range of input voltages below which no output is produced for application to tube 7 and above which saturation occurs, producing only a limited change in output voltage level for a large change in input voltage. The gain of amplifier 8 and the bias of amplifier 9 are made adjustable whereby signals between selected levels only, corresponding to details of the X-ray image between predetermined intensities, are made effective to produce a fully contrasting picture on the screen of tube 7.
GB25454/49A 1948-12-11 1949-10-04 Improvements in or relating to apparatus for producing x-ray images Expired GB663339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663339XA 1948-12-11 1948-12-11

Publications (1)

Publication Number Publication Date
GB663339A true GB663339A (en) 1951-12-19

Family

ID=22068821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25454/49A Expired GB663339A (en) 1948-12-11 1949-10-04 Improvements in or relating to apparatus for producing x-ray images

Country Status (1)

Country Link
GB (1) GB663339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057354B (en) * 1955-07-27 1959-05-14 Siemens Ag Image viewing device using an electronic image transmission system based on the television principle with adjustable contrast ratios
US5124545A (en) * 1989-03-23 1992-06-23 Victor Company Of Japan, Ltd. Light-to-light conversion element provided with wavelength selecting reflection layer and imaging device provided with the light-to-light conversion element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1057354B (en) * 1955-07-27 1959-05-14 Siemens Ag Image viewing device using an electronic image transmission system based on the television principle with adjustable contrast ratios
US5124545A (en) * 1989-03-23 1992-06-23 Victor Company Of Japan, Ltd. Light-to-light conversion element provided with wavelength selecting reflection layer and imaging device provided with the light-to-light conversion element
USRE34947E (en) * 1989-03-23 1995-05-23 Victor Company Of Japan, Ltd. Light-to-light conversion element provided with wavelength selecting reflection layer and imaging device provided with the light-to-light conversion element

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