GB863068A - Improvements in colour television tubes and apparatus for making them - Google Patents
Improvements in colour television tubes and apparatus for making themInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Lenses (AREA)
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.
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)
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)
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. |
US20090258865A1 (en) * | 2008-03-28 | 2009-10-15 | Hale Biopharma Ventures, Llc | Administration of benzodiazepine compositions |
Family Cites Families (4)
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 |
-
0
- NL NL217309D patent/NL217309A/xx unknown
- NL NL270797D patent/NL270797A/xx unknown
- BE BE557575D patent/BE557575A/xx unknown
-
1957
- 1957-05-02 GB GB30434/60A patent/GB863068A/en not_active Expired
- 1957-05-02 GB GB14101/57A patent/GB863067A/en not_active Expired
- 1957-05-16 FR FR1175242D patent/FR1175242A/en not_active Expired
- 1957-05-16 DE DER21174A patent/DE1095314B/en active Pending
-
1958
- 1958-03-03 US US718870A patent/US3109116A/en not_active Expired - Lifetime
Cited By (2)
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 |
---|---|
GB863067A (en) | 1961-03-15 |
DE1095314B (en) | 1960-12-22 |
FR1175242A (en) | 1959-03-23 |
NL270797A (en) | |
NL217309A (en) | |
US3109116A (en) | 1963-10-29 |
BE557575A (en) |
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