GB1337044A - Anti-reflection arrangement for display devices - Google Patents

Anti-reflection arrangement for display devices

Info

Publication number
GB1337044A
GB1337044A GB1337044DA GB1337044A GB 1337044 A GB1337044 A GB 1337044A GB 1337044D A GB1337044D A GB 1337044DA GB 1337044 A GB1337044 A GB 1337044A
Authority
GB
United Kingdom
Prior art keywords
face
circular polarizer
filter
display devices
interference filter
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
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1337044A publication Critical patent/GB1337044A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters

Abstract

1337044 Cathode-ray tube displays STANDARD TELEPHONES & CABLES Ltd 18 March 1971 7181/71 Heading H4T [Also in Division H1] A display device includes a circular polarizer 5 in front of the face of a cathode ray tube, and has an optical interference filter 4 intermediate the phosphor 3 of the CRT and the inner surface of its face. An absorption filter may be located between the interference filter and the circular polarizer. As shown, the face 72 of the CRT is formed as this filter. The circular polarizer 5 preferably has a broad-band anti-reflective coating 6. The pass-band of the interference filter 4 is preferably matched with the spectral emission of the phosphor.
GB1337044D 1971-03-18 1971-03-18 Anti-reflection arrangement for display devices Expired GB1337044A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB718171 1971-03-18

Publications (1)

Publication Number Publication Date
GB1337044A true GB1337044A (en) 1973-11-14

Family

ID=9828170

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1337044D Expired GB1337044A (en) 1971-03-18 1971-03-18 Anti-reflection arrangement for display devices

Country Status (1)

Country Link
GB (1) GB1337044A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257812A (en) * 1991-06-25 1993-01-20 Smiths Industries Plc Display filter arrangements.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2257812A (en) * 1991-06-25 1993-01-20 Smiths Industries Plc Display filter arrangements.
US5268788A (en) * 1991-06-25 1993-12-07 Smiths Industries Public Limited Company Display filter arrangements
GB2257812B (en) * 1991-06-25 1995-08-02 Smiths Industries Plc Display assemblies and night vision aids

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee