GB863068A - Improvements in colour television tubes and apparatus for making them - Google Patents

Improvements in colour television tubes and apparatus for making them

Info

Publication number
GB863068A
GB863068A GB30434/60A GB3043460A GB863068A GB 863068 A GB863068 A GB 863068A GB 30434/60 A GB30434/60 A GB 30434/60A GB 3043460 A GB3043460 A GB 3043460A GB 863068 A GB863068 A GB 863068A
Authority
GB
United Kingdom
Prior art keywords
line
colour television
symmetry
lens
making
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
GB30434/60A
Inventor
David William Epstein
Peter Edward Kaus
David Dale Van Ormer
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 claimed from US585254A external-priority patent/US2885935A/en
Application filed by RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB863068A publication Critical patent/GB863068A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22—Applying luminescent coatings
    • H01J9/227—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines
    • H01J9/2271—Applying luminescent coatings with luminescent material discontinuously arranged, e.g. in dots or lines by photographic processes
    • H01J9/2272—Devices for carrying out the processes, e.g. light houses
    • H01J9/2273—Auxiliary lenses and filters
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • 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
    • H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
    • H04N9/20—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0727—Aperture plate
    • H01J2229/0788—Parameterised dimensions of aperture plate, e.g. relationships, polynomial expressions

Abstract

863,068. Optical lenses. RADIO CORPORATION OF AMERICA. May 2, 1957, No. 30434/60. Divided out of 863,067. Class 97(1) [Also in Group XL(a)] An aspheric asymmetrical lens, particularly for use in the manufacture of colour television screens by the "optical lighthouse" method (see Group'XL(a) ) has a single line of symmetry and a variation of thickness t with the radius h of the lens along that line of N being the refractive index of the lens material and angles U 1 , U 2 , U 3 being as shown in Fig. 10 for a light ray emanating from the light source 47 and an azimuthal variation wherein # being equal to t o -t, # the azimuthal angle with reference to the line of symmetry and the coefficients α 2 α 3 &c. being empirically determined with reference to the errors to be corrected in the television tube.
GB30434/60A 1956-05-16 1957-05-02 Improvements in colour television tubes and apparatus for making them Expired GB863068A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US585254A US2885935A (en) 1956-05-16 1956-05-16 Color-kinescopes, etc.
US718870A US3109116A (en) 1956-05-16 1958-03-03 Color-kinescope of the shadow mask variety

Publications (1)

Publication Number Publication Date
GB863068A true GB863068A (en) 1961-03-15

Family

ID=27079329

Family Applications (2)

Application Number Title Priority Date Filing Date
GB30434/60A Expired GB863068A (en) 1956-05-16 1957-05-02 Improvements in colour television tubes and apparatus for making them
GB14101/57A Expired GB863067A (en) 1956-05-16 1957-05-02 Colour kinescopes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB14101/57A Expired GB863067A (en) 1956-05-16 1957-05-02 Colour kinescopes

Country Status (6)

Country Link
US (1) US3109116A (en)
BE (1) BE557575A (en)
DE (1) DE1095314B (en)
FR (1) FR1175242A (en)
GB (2) GB863068A (en)
NL (2) NL270797A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274727A (en) * 1993-01-29 1994-08-03 Virtuality Entertainment Ltd Optical display system

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354341A (en) * 1961-10-09 1967-11-21 Rca Corp Cathode ray tube screen with color areas of differing contours
BE634597A (en) * 1962-07-06
US3435268A (en) * 1966-08-19 1969-03-25 Gen Electric In-line plural beam cathode ray tube with an aspherical aperture mask
NL149323B (en) * 1967-01-12 1976-04-15 Philips Nv ELECTRON BEAM TUBE FOR DISPLAYING COLOR IMAGES.
GB1273459A (en) * 1969-10-30 1972-05-10 Matsushita Electronics Corp Method and apparatus for making colour cathode-ray tube
US4152154A (en) * 1970-06-05 1979-05-01 U.S. Philips Corporation Method of optically projecting a pattern of substantially circular apertures on a photosensitive layer by rotating light source
US3725106A (en) * 1970-10-30 1973-04-03 Matsushita Electronics Corp Method and apparatus of making color cathode ray tube
GB1546889A (en) * 1975-03-19 1979-05-31 Rca Corp Cathode ray tube having shadow mask
US4839556A (en) * 1983-02-25 1989-06-13 Rca Licensing Corporation Cathode-ray tube having an improved shadow mask contour
NL8500340A (en) * 1985-02-07 1986-09-01 Philips Nv TELEVISION ROOM TUBE.
CA2756690C (en) * 2008-03-28 2016-08-16 Hale Biopharma Ventures, Llc Administration of benzodiazepine compositions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2690518A (en) * 1953-06-01 1954-09-28 Columbia Broadcasting Syst Inc Color picture tube
US2745978A (en) * 1954-08-23 1956-05-15 Rca Corp Cathode ray tube
NL209270A (en) * 1955-07-26
US2937297A (en) * 1957-08-05 1960-05-17 Sylvania Electric Prod Image display device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2274727A (en) * 1993-01-29 1994-08-03 Virtuality Entertainment Ltd Optical display system
GB2274727B (en) * 1993-01-29 1996-06-12 Virtuality Entertainment Ltd Optical system

Also Published As

Publication number Publication date
BE557575A (en)
DE1095314B (en) 1960-12-22
NL217309A (en)
GB863067A (en) 1961-03-15
US3109116A (en) 1963-10-29
NL270797A (en)
FR1175242A (en) 1959-03-23

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