GB523359A - Improvements in or relating to luminescent screens - Google Patents
Improvements in or relating to luminescent screensInfo
- Publication number
- GB523359A GB523359A GB68/39A GB6839A GB523359A GB 523359 A GB523359 A GB 523359A GB 68/39 A GB68/39 A GB 68/39A GB 6839 A GB6839 A GB 6839A GB 523359 A GB523359 A GB 523359A
- Authority
- GB
- United Kingdom
- Prior art keywords
- binder
- luminescent
- less
- halation
- attached
- 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
- 239000011230 binding agent Substances 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 3
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 239000011358 absorbing material Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 238000010410 dusting Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
Classifications
-
- 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
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/185—Luminescent screens measures against halo-phenomena
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
523,359. Luminescent screens. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 2, 1939, No. 68. Convention date, Dec. 31, 1937. Drawings to Specification. [Class 39 (i)] Luminescent screens for cathode-ray tubes &c. consisting of luminescent material attached to a transparent screen by a binder are constructed to diminish halation. For this purpose :-(a) the luminescent particles may be so attached to the binder that their area of contact therewith is less than 20 per cent. of their total superficial area ; this may be effected by spreading the binder on the screen, allowing it to get tacky and dusting the luminescent material on to it lightly ; or (b) some light absorbing material, such as finely divided carbon or manganese dioxide may be dispersed in the binder to absorb light incident obliquely. To reduce halation by light trapped in the binder layer a binding material may be used, such as boron trioxide, the refraction index of which is less than that of the glass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US523359XA | 1937-12-31 | 1937-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB523359A true GB523359A (en) | 1940-07-12 |
Family
ID=21976950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB68/39A Expired GB523359A (en) | 1937-12-31 | 1939-01-02 | Improvements in or relating to luminescent screens |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB523359A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2230802A1 (en) * | 1971-07-10 | 1973-01-18 | Philips Nv | LAMP SCREEN WITH A MOSAIC STRUCTURE |
-
1939
- 1939-01-02 GB GB68/39A patent/GB523359A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2230802A1 (en) * | 1971-07-10 | 1973-01-18 | Philips Nv | LAMP SCREEN WITH A MOSAIC STRUCTURE |
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