GB708365A - Improvements in or relating to viewing windows for cathode ray tube apparatus - Google Patents

Improvements in or relating to viewing windows for cathode ray tube apparatus

Info

Publication number
GB708365A
GB708365A GB2822351A GB2822351A GB708365A GB 708365 A GB708365 A GB 708365A GB 2822351 A GB2822351 A GB 2822351A GB 2822351 A GB2822351 A GB 2822351A GB 708365 A GB708365 A GB 708365A
Authority
GB
United Kingdom
Prior art keywords
ray tube
relating
cathode ray
tube apparatus
viewing windows
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
GB2822351A
Inventor
James John Billin
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB2822351A priority Critical patent/GB708365A/en
Publication of GB708365A publication Critical patent/GB708365A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/65—Holding-devices for protective discs or for picture masks

Abstract

708,365. Television receivers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Nov. 28, 1952 [Dec. 1, 1951], No. 28223/51. Class 40 (3) A protective window for a cathode-ray tube television receiver is formed as a hollow moulding as shown in Fig. 1 from a material such as methyl methacrylate or toughened glass and is secured to the receiver cabinet as shown in Fig. 2 with the surface 3 at an angle of 4-9 degrees to the vertical whereby spectral reflections from adjacent light sources are prevented from interfering with viewing. Preferably the surface 3 is curved concavely as shown at 9 to form the surface of a cylinder having, for example, a radius of about 60 inches. The top and side walls 6, 7 may be rendered opaque by a coating of enamel. The surface 3 may be tinted to act as a filter to improve image contrast.
GB2822351A 1951-12-01 1951-12-01 Improvements in or relating to viewing windows for cathode ray tube apparatus Expired GB708365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2822351A GB708365A (en) 1951-12-01 1951-12-01 Improvements in or relating to viewing windows for cathode ray tube apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2822351A GB708365A (en) 1951-12-01 1951-12-01 Improvements in or relating to viewing windows for cathode ray tube apparatus

Publications (1)

Publication Number Publication Date
GB708365A true GB708365A (en) 1954-05-05

Family

ID=10272263

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2822351A Expired GB708365A (en) 1951-12-01 1951-12-01 Improvements in or relating to viewing windows for cathode ray tube apparatus

Country Status (1)

Country Link
GB (1) GB708365A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819459A (en) * 1954-05-06 1958-01-07 Roy F Dodd Open-face non-glare type viewing hood
US3109063A (en) * 1960-09-22 1963-10-29 Decca Ltd Cathode ray tube display apparatus
US3121773A (en) * 1960-03-31 1964-02-18 Detag Television apparatus with safety pane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2819459A (en) * 1954-05-06 1958-01-07 Roy F Dodd Open-face non-glare type viewing hood
US3121773A (en) * 1960-03-31 1964-02-18 Detag Television apparatus with safety pane
US3109063A (en) * 1960-09-22 1963-10-29 Decca Ltd Cathode ray tube display apparatus

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