GB490029A - Improvements in the projection of cathode ray tube images - Google Patents

Improvements in the projection of cathode ray tube images

Info

Publication number
GB490029A
GB490029A GB333337A GB333337A GB490029A GB 490029 A GB490029 A GB 490029A GB 333337 A GB333337 A GB 333337A GB 333337 A GB333337 A GB 333337A GB 490029 A GB490029 A GB 490029A
Authority
GB
United Kingdom
Prior art keywords
screen
ray tube
fluorescent
projection
cathode ray
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
GB333337A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB333337A priority Critical patent/GB490029A/en
Publication of GB490029A publication Critical patent/GB490029A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

490,029. Television receivers; fluorescent screens. BRITISH THOMSON-HOUSTON CO., Ltd., and SCOTT, W. J. Feb. 4, 1937, No. 3333. [Class 40 (iii)] [Also in Group XX] The coating on the screen of a cathode-ray tube, when excited by the ray, emits a radiation which is projected on, and excites fluorescence in, a fluorescent screen to produce a replica of the image on the screen in the tube. The image is viewed through a colour filter. The fluorescent material on the screen of the cathode-ray tube is zinc silicate or calcium tungstate and for the fluorescent screen rhodamine or zinc cadmium sulphide. Speci. fication 402,397 is referred to.
GB333337A 1937-02-04 1937-02-04 Improvements in the projection of cathode ray tube images Expired GB490029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB333337A GB490029A (en) 1937-02-04 1937-02-04 Improvements in the projection of cathode ray tube images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB333337A GB490029A (en) 1937-02-04 1937-02-04 Improvements in the projection of cathode ray tube images

Publications (1)

Publication Number Publication Date
GB490029A true GB490029A (en) 1938-08-04

Family

ID=9756330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB333337A Expired GB490029A (en) 1937-02-04 1937-02-04 Improvements in the projection of cathode ray tube images

Country Status (1)

Country Link
GB (1) GB490029A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435436A (en) * 1943-12-18 1948-02-03 Gen Electric Cathode-ray tube screen
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light
US2452523A (en) * 1941-10-31 1948-10-26 Rca Corp Luminescent screen
US2477645A (en) * 1946-04-24 1949-08-02 Standard Telephones Cables Ltd Color television
US2553182A (en) * 1946-11-01 1951-05-15 Cage Projects Inc Color television
DE1029411B (en) * 1954-11-12 1958-05-08 Thorn Electrical Ind Ltd Projection display device for color television signals

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452522A (en) * 1941-03-18 1948-10-26 Rca Corp Luminescent screen and method of developing light
US2452523A (en) * 1941-10-31 1948-10-26 Rca Corp Luminescent screen
US2435436A (en) * 1943-12-18 1948-02-03 Gen Electric Cathode-ray tube screen
US2477645A (en) * 1946-04-24 1949-08-02 Standard Telephones Cables Ltd Color television
US2553182A (en) * 1946-11-01 1951-05-15 Cage Projects Inc Color television
DE1029411B (en) * 1954-11-12 1958-05-08 Thorn Electrical Ind Ltd Projection display device for color television signals

Similar Documents

Publication Publication Date Title
GB485264A (en) Improvements in electron-microscopy and apparatus therefor
US2096986A (en) Braun tube
GB453043A (en) Improvements in or relating to cathode ray tube television and like reproducer apparatus
US2021907A (en) Method of and apparatus for producing images of objects
GB1306766A (en) Black-surround colour picture tubes
GB490029A (en) Improvements in the projection of cathode ray tube images
US2418779A (en) Alkali metal halide and luminescent screens of substantially coincident spectral absorption
US2227070A (en) Projection system
US2121990A (en) Television
GB450973A (en) Improvements in or relating to cathode-ray tubes
GB517483A (en) Improvements in or relating to television and like receivers
US2951948A (en) Flying-spot scanning systems
GB477406A (en) Improvements in or relating to television or like systems and electron discharge apparatus therefor
GB528444A (en) Improvements in television receivers of the optical projection type and other image projection systems
GB478238A (en) Improvements in or relating to light sensitive electron discharge tubes
GB467367A (en) Means and method of producing incandescent images in cathode ray tubes
GB488416A (en) Improvements in or relating to electron-optical lens systems for electron discharge tubes
GB490845A (en) Improvements in or relating to television transmitting systems
GB494298A (en) Improvements in or relating to cathode ray tubes
GB555213A (en) Television transmitting system
GB475547A (en) Improvements in or relating to light sensitive and light producing electron discharge devices
GB478121A (en) Improvements in or relating to cathode ray tubes
GB435191A (en) Improvements in or relating to cathode ray tubes
GB501535A (en) Improvements in or relating to television and like systems
GB470480A (en) Improvements in or relating to cathode-ray tubes