GB932187A - Improvements in and relating to colour television - Google Patents

Improvements in and relating to colour television

Info

Publication number
GB932187A
GB932187A GB27943/59A GB2794359A GB932187A GB 932187 A GB932187 A GB 932187A GB 27943/59 A GB27943/59 A GB 27943/59A GB 2794359 A GB2794359 A GB 2794359A GB 932187 A GB932187 A GB 932187A
Authority
GB
United Kingdom
Prior art keywords
strips
light
layer
colour
coating
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
GB27943/59A
Inventor
Peter Henry Mattingly
John Kenneth Oxenham
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.)
SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd
Original Assignee
SYLVANIA THORN COLOUR TELEVISION LABORATORIES 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
Priority to NL254715D priority Critical patent/NL254715A/xx
Priority to NL132873D priority patent/NL132873C/xx
Application filed by SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd filed Critical SYLVANIA THORN COLOUR TELEVISION LABORATORIES Ltd
Priority to GB27943/59A priority patent/GB932187A/en
Priority to DES69872A priority patent/DE1155477B/en
Publication of GB932187A publication Critical patent/GB932187A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position

Abstract

932,187. Colour relevision tubes. SYLVANIA - THORN COLOUR TELEVISION LABORATORIES Ltd. July 27, 1960 [Aug. 14, 1959], No. 27943/59, Class 39 (1). A viewing screen for a colour television receiver comprises, in the order named proceeding from a transparent face-plate 11, colour phosphor strips R, G, B, light-emissive index strips I, and a metallic coating A 1 , A 2 which, between the strips I, is continuous and of high light-reflecting power and which, over strips I, is discontinuous and of substantially higher light-transmitting power than the continuous coating. Light from the index strips passes through a window in the wall of the cathode-ray tube, e.g. to a photomultiplier. As shown, during manufacture of the screen, a layer N of nitrocellulose is applied over the phosphor strips and intervening guard bands D of opaque material, before application of the index strips I, which emit light mainly in the violet and ultra-violet part of the spectrum, and which may comprise calcium magnesium silicate or calcium aluminium silicate activated by cerium. A layer of aluminium is then evaporated on to the exposed surface, forming a continuous coating on the smooth layer N but a discontinuous coating on the strips I transmitting 20-25% of the light emitted therefrom. The layer N may remain in the finished screen or be wholly or largely removed in a subsequent baking process. Specifications 895,772, 932,185 and 932,186 are referred to.
GB27943/59A 1959-08-04 1959-08-04 Improvements in and relating to colour television Expired GB932187A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL254715D NL254715A (en) 1959-08-04
NL132873D NL132873C (en) 1959-08-04
GB27943/59A GB932187A (en) 1959-08-04 1959-08-04 Improvements in and relating to colour television
DES69872A DE1155477B (en) 1959-08-04 1960-08-10 Process for the production of a cathode ray tube with colored stripes and index stripes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27943/59A GB932187A (en) 1959-08-04 1959-08-04 Improvements in and relating to colour television

Publications (1)

Publication Number Publication Date
GB932187A true GB932187A (en) 1963-07-24

Family

ID=10267771

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27943/59A Expired GB932187A (en) 1959-08-04 1959-08-04 Improvements in and relating to colour television

Country Status (3)

Country Link
DE (1) DE1155477B (en)
GB (1) GB932187A (en)
NL (2) NL254715A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367790A (en) * 1964-12-01 1968-02-06 Rca Corp Method of making color-kinescopes of the line-screen sensing variety
CA962314A (en) * 1971-09-29 1975-02-04 Matsushita Electric Industrial Co., Ltd. Color camera tube having color strip filter and an index electrode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2633547A (en) * 1950-06-30 1953-03-31 Rca Corp Two-sided electron-sensitive screen

Also Published As

Publication number Publication date
NL132873C (en)
NL254715A (en)
DE1155477B (en) 1963-10-10

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