GB1446899A - Colour picture tubes - Google Patents
Colour picture tubesInfo
- Publication number
- GB1446899A GB1446899A GB5624873A GB5624873A GB1446899A GB 1446899 A GB1446899 A GB 1446899A GB 5624873 A GB5624873 A GB 5624873A GB 5624873 A GB5624873 A GB 5624873A GB 1446899 A GB1446899 A GB 1446899A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- collimator
- absorber
- dec
- ester
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
1446899 Luminescent screens HITACHI Ltd 4 Dec 1973 [4 Dec 1972] 56248/73 Heading H1D Exposure apparatus for forming a colour tube fluorescent screen includes a synthetic resin (e.g. acrylic resin), correction lens 5 with means 7 to eliminate u.v. rays of short wavelength (e.g. <320 mÁ) that deteriorate the light transmissibility characteristic of the correction lens. Elimination may be by a plate of white or blue glass, conventional glass coated with a u.v. absorber, e.g. derivatives of an ester of salicyclie acid, a white glass collimator which also provides a point light source, or light source cooling means impregnated with an absorption agent. Cross-sectional uniformity of the intensity may be improved by a graded filter. Fig. 4 (not shown) includes u.v. source (20), collimator (21), and air or water cooling member (22). Collimator (21) may be quartz glass with a u.v. absorber in member (22) (e.g. an ester as above) or a glass absorbing short wavelength u.v.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12065372A JPS4979166A (en) | 1972-12-04 | 1972-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1446899A true GB1446899A (en) | 1976-08-18 |
Family
ID=14791541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5624873A Expired GB1446899A (en) | 1972-12-04 | 1973-12-04 | Colour picture tubes |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS4979166A (en) |
| ES (1) | ES421147A1 (en) |
| FR (1) | FR2211743B1 (en) |
| GB (1) | GB1446899A (en) |
| IT (1) | IT1001252B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5333567A (en) * | 1976-09-10 | 1978-03-29 | Hitachi Ltd | Exposure method for fluorescent screen of color picture receiver |
-
1972
- 1972-12-04 JP JP12065372A patent/JPS4979166A/ja active Pending
-
1973
- 1973-12-03 FR FR7343019A patent/FR2211743B1/fr not_active Expired
- 1973-12-04 GB GB5624873A patent/GB1446899A/en not_active Expired
- 1973-12-04 ES ES421147A patent/ES421147A1/en not_active Expired
- 1973-12-04 IT IT8365573A patent/IT1001252B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2211743A1 (en) | 1974-07-19 |
| DE2360321A1 (en) | 1974-06-06 |
| FR2211743B1 (en) | 1978-11-10 |
| IT1001252B (en) | 1976-04-20 |
| ES421147A1 (en) | 1976-05-01 |
| DE2360321B2 (en) | 1976-10-07 |
| JPS4979166A (en) | 1974-07-31 |
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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 |