GB706190A - Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes - Google Patents

Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes

Info

Publication number
GB706190A
GB706190A GB3056450A GB3056450A GB706190A GB 706190 A GB706190 A GB 706190A GB 3056450 A GB3056450 A GB 3056450A GB 3056450 A GB3056450 A GB 3056450A GB 706190 A GB706190 A GB 706190A
Authority
GB
United Kingdom
Prior art keywords
screen
cathode
ray tubes
screens
relating
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
GB3056450A
Inventor
Cecil Arthur Cove
Sydney Arthur George Taylerson
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3056450A priority Critical patent/GB706190A/en
Priority to FR1046375D priority patent/FR1046375A/en
Publication of GB706190A publication Critical patent/GB706190A/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
    • H01J29/89—Optical or photographic arrangements structurally combined or co-operating with the vessel
    • H01J29/896—Anti-reflection means, e.g. eliminating glare due to ambient light
    • 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
    • H01J2229/8913—Anti-reflection, anti-glare, viewing angle and contrast improving treatments or devices
    • H01J2229/8922—Apparatus attached to vessel and not integral therewith

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

706,190. Cathode-ray tubes. GENERAL ELECTRIC CO., Ltd. Dec. 12, 1951 [Dec. 14, 1950], No. 30564/50. Class 39(1) [Also in Groups XXXVI and XL(b)] A fine mesh filter is placed in front of the screen of a cathode-ray tube to improve the contrast of the reproduced image in the presence 0 1 external light falling or the screen. In Fig. 1 the filter is formed as a bag of fine net material en veloping the end of the cathode-ray tube. In another embodiment, Fig. 2 (not shown), the net material is supported in a frame in front of the tube screen. The material should appear darker than the screen, a black material being suitable for a white screen, and crimson for a sepia screen. The mesh should have a value not less than the upper limit of resolution for the normal viewing distance, material formed with 70 threads per inch in both directions being suitable. Nylon is a preferred material. Specification 483,841 is referred to.
GB3056450A 1950-12-14 1950-12-14 Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes Expired GB706190A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3056450A GB706190A (en) 1950-12-14 1950-12-14 Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes
FR1046375D FR1046375A (en) 1950-12-14 1951-12-13 Improvements to television sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3056450A GB706190A (en) 1950-12-14 1950-12-14 Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes

Publications (1)

Publication Number Publication Date
GB706190A true GB706190A (en) 1954-03-24

Family

ID=10309616

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3056450A Expired GB706190A (en) 1950-12-14 1950-12-14 Improvements in or relating to apparatus for viewing television and other images on the screens of cathode ray tubes

Country Status (2)

Country Link
FR (1) FR1046375A (en)
GB (1) GB706190A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2977412A (en) * 1958-03-25 1961-03-28 Rca Corp Light reflection reducing device
US3009017A (en) * 1953-05-22 1961-11-14 Libbey Owens Ford Glass Co Laminated television screen
US3037195A (en) * 1957-04-24 1962-05-29 Research Corp Data filtering system
EP0021371A1 (en) * 1979-07-03 1981-01-07 Licentia Patent-Verwaltungs-GmbH Plasma display device
US4633322A (en) * 1984-02-20 1986-12-30 Fourny Denise G Screen to be disposed in front of a cathode ray screen, comprised by monofilaments forming micromeshes and having, on one surface, a translucent film

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3009017A (en) * 1953-05-22 1961-11-14 Libbey Owens Ford Glass Co Laminated television screen
US3037195A (en) * 1957-04-24 1962-05-29 Research Corp Data filtering system
US2977412A (en) * 1958-03-25 1961-03-28 Rca Corp Light reflection reducing device
EP0021371A1 (en) * 1979-07-03 1981-01-07 Licentia Patent-Verwaltungs-GmbH Plasma display device
US4633322A (en) * 1984-02-20 1986-12-30 Fourny Denise G Screen to be disposed in front of a cathode ray screen, comprised by monofilaments forming micromeshes and having, on one surface, a translucent film

Also Published As

Publication number Publication date
FR1046375A (en) 1953-12-07

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