GB1142958A - Optical lens system for use in manufacturing color television tubes - Google Patents
Optical lens system for use in manufacturing color television tubesInfo
- Publication number
- GB1142958A GB1142958A GB25774/66A GB2577466A GB1142958A GB 1142958 A GB1142958 A GB 1142958A GB 25774/66 A GB25774/66 A GB 25774/66A GB 2577466 A GB2577466 A GB 2577466A GB 1142958 A GB1142958 A GB 1142958A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lenses
- lens system
- optical lens
- color television
- manufacturing color
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
1,142,958. Lenses. NATIONAL VIDEO CORP. June 9, 1966 [July 15, 1965], No. 25774/66. Heading G2J. [Also in Division H1] In the manufacture of the screen of a colour television tube of the shadow mask type, the colour triads are positioned thereon in a manner which corrects for radial misregister and misconvergence effects by the use of an optical system which includes at least two spaced lenses: to effect the required correction, it is shown that the lenses must be such that the distance of a light-ray from the axis of the tube at one of the lenses is a non- linear function of its distance from the axis at the other lens. Design theory for the lens system is provided.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47216965A | 1965-07-15 | 1965-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1142958A true GB1142958A (en) | 1969-02-12 |
Family
ID=23874460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25774/66A Expired GB1142958A (en) | 1965-07-15 | 1966-06-09 | Optical lens system for use in manufacturing color television tubes |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1462840A1 (en) |
| FR (1) | FR1486310A (en) |
| GB (1) | GB1142958A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7510272A (en) * | 1975-09-01 | 1977-03-03 | Philips Nv | PROCEDURE FOR MANUFACTURE OF A CATHODE RAY TUBE FOR DISPLAYING COLORED IMAGES AND CATHOD RAY TUBE MADE IN ACCORDANCE WITH THIS PROCESS. |
-
1966
- 1966-06-09 GB GB25774/66A patent/GB1142958A/en not_active Expired
- 1966-07-11 FR FR68934A patent/FR1486310A/en not_active Expired
- 1966-07-15 DE DE19661462840 patent/DE1462840A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR1486310A (en) | 1967-06-23 |
| DE1462840A1 (en) | 1968-12-19 |
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