GB417435A - Improvements in or relating to cathode ray tube oscillographs - Google Patents

Improvements in or relating to cathode ray tube oscillographs

Info

Publication number
GB417435A
GB417435A GB13015/34A GB1301534A GB417435A GB 417435 A GB417435 A GB 417435A GB 13015/34 A GB13015/34 A GB 13015/34A GB 1301534 A GB1301534 A GB 1301534A GB 417435 A GB417435 A GB 417435A
Authority
GB
United Kingdom
Prior art keywords
lens
wall
cathode ray
april
oil
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
GB13015/34A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB417435A publication Critical patent/GB417435A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/006—Arrangements for eliminating unwanted temperature effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0061—Cooling arrangements
    • H01J2229/0069—Active means, e.g. fluid flow
    • H01J2229/0076—Active means, e.g. fluid flow applied to the faceplate
    • H01J2229/0084—Translucent coolant, e.g. flowing across faceplate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/89—Optical components associated with the vessel
    • H01J2229/8907—Image projection devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

417,435. Cathode ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Ogloblinsky, G. N. ; 22, Merrick Villa, Collingswood, New Jersey, U.S.A.) April 30, 1934, No. 13015. Convention date, April 29, 1933. [Class 39 (i).] In tubes for use in television the fluorescent screen 14 is formed on a flat wall 12 to which is applied a composite lens comprising a semispherical part 22 with its flat base parallel to the wall 12, the chamber 28 between being filled with oil which may circulate for cooling purposes. The refractive indices of the tube wall 10, 12, the oil and lens part 22 are substantially the same ; total reflection at the outer surface 30 of the wall is eliminated. A point source of light is formed by the tube at P ; the radius of curvature of the lens and the distances u1, u2 of the image P and virtual image P1 from the projecting lens 24 are such that P is at the aplanatic focus of the lens.
GB13015/34A 1933-04-29 1934-04-30 Improvements in or relating to cathode ray tube oscillographs Expired GB417435A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US417435XA 1933-04-29 1933-04-29

Publications (1)

Publication Number Publication Date
GB417435A true GB417435A (en) 1934-10-04

Family

ID=21918094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13015/34A Expired GB417435A (en) 1933-04-29 1934-04-30 Improvements in or relating to cathode ray tube oscillographs

Country Status (2)

Country Link
GB (1) GB417435A (en)
NL (1) NL40442C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741765C (en) * 1937-01-20 1943-11-17 Fernseh Gmbh Projection method
DE743864C (en) * 1937-10-22 1944-01-04 Telefunken Gmbh Electron beam tube
FR2506070A1 (en) * 1981-05-12 1982-11-19 Sony Corp CATHODE TUBE APPARATUS
EP0089722A1 (en) * 1982-03-19 1983-09-28 Koninklijke Philips Electronics N.V. Display tube
GB2117562A (en) * 1982-03-10 1983-10-12 Sony Corp Cathode ray tube
EP0111979A1 (en) * 1982-12-22 1984-06-27 Philips Electronics Uk Limited Means for cooling the faceplate of a cathode ray tube in a television projection system
FR2539552A1 (en) * 1983-01-13 1984-07-20 Philips Nv TUBE IMAGE
GB2188446A (en) * 1986-03-24 1987-09-30 Slettemoen Gudmunn Image detector with wave-front converter to reduce undesirable reflections

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741765C (en) * 1937-01-20 1943-11-17 Fernseh Gmbh Projection method
DE743864C (en) * 1937-10-22 1944-01-04 Telefunken Gmbh Electron beam tube
FR2506070A1 (en) * 1981-05-12 1982-11-19 Sony Corp CATHODE TUBE APPARATUS
GB2117562A (en) * 1982-03-10 1983-10-12 Sony Corp Cathode ray tube
EP0089722A1 (en) * 1982-03-19 1983-09-28 Koninklijke Philips Electronics N.V. Display tube
EP0111979A1 (en) * 1982-12-22 1984-06-27 Philips Electronics Uk Limited Means for cooling the faceplate of a cathode ray tube in a television projection system
FR2539552A1 (en) * 1983-01-13 1984-07-20 Philips Nv TUBE IMAGE
GB2188446A (en) * 1986-03-24 1987-09-30 Slettemoen Gudmunn Image detector with wave-front converter to reduce undesirable reflections

Also Published As

Publication number Publication date
NL40442C (en)

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