GB1367875A - Cathode ray tubes with target screen and the manufacture thereof - Google Patents

Cathode ray tubes with target screen and the manufacture thereof

Info

Publication number
GB1367875A
GB1367875A GB1959974A GB1959974A GB1367875A GB 1367875 A GB1367875 A GB 1367875A GB 1959974 A GB1959974 A GB 1959974A GB 1959974 A GB1959974 A GB 1959974A GB 1367875 A GB1367875 A GB 1367875A
Authority
GB
United Kingdom
Prior art keywords
light source
screen
sheet
radiation
ray tubes
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
GB1959974A
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 GB1959974A priority Critical patent/GB1367875A/en
Publication of GB1367875A publication Critical patent/GB1367875A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

1367875 Colour cathode-ray tubes D M GOODMAN 9 Aug 1971 19599/74 Divided out of 1366344 Heading H1D In a photo-deposition method of making a colour cathode-ray tube screen, e.g. the beam indexing strips of a beam indexing type tube, a light source is used which comprises a primary source of radiation, such as an ultra-violet lamp 28, and a sheet of scintillator material 29 which is excited by the ultra-violet light to generate optical radiation which is internally reflected in the sheet and emerges from a relatively small exit region 30. A second sheet of sointillator material can surround the first so as to use radiation escaping from the first. In an alternative form, Fig. 8 (not shown), the scintillator is formed as a conical funnel with the exit region at the apex to provide a point source of light. The light source can be used in close contact with the screen as shown in Fig. 5, or it can be used in the position of a conventional light source 28a in conjunction with an optical master 60. A single light source can be used in successive positions across a screen or several sources can be arranged in an array to expose simultaneously a number of strips.
GB1959974A 1971-08-09 1971-08-09 Cathode ray tubes with target screen and the manufacture thereof Expired GB1367875A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1959974A GB1367875A (en) 1971-08-09 1971-08-09 Cathode ray tubes with target screen and the manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1959974A GB1367875A (en) 1971-08-09 1971-08-09 Cathode ray tubes with target screen and the manufacture thereof

Publications (1)

Publication Number Publication Date
GB1367875A true GB1367875A (en) 1974-09-25

Family

ID=10132070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1959974A Expired GB1367875A (en) 1971-08-09 1971-08-09 Cathode ray tubes with target screen and the manufacture thereof

Country Status (1)

Country Link
GB (1) GB1367875A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7612342B1 (en) 2005-09-27 2009-11-03 Radiation Monitoring Devices, Inc. Very bright scintillators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7612342B1 (en) 2005-09-27 2009-11-03 Radiation Monitoring Devices, Inc. Very bright scintillators

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees