GB745811A - Improvements relating to electron multipliers - Google Patents
Improvements relating to electron multipliersInfo
- Publication number
- GB745811A GB745811A GB7006/51A GB700651A GB745811A GB 745811 A GB745811 A GB 745811A GB 7006/51 A GB7006/51 A GB 7006/51A GB 700651 A GB700651 A GB 700651A GB 745811 A GB745811 A GB 745811A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- cathode
- photo
- wall
- glass
- 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
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
745,811. Electron multipliers. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 17, 1962 [March 27, 1951], No. 7006/51. Class 39 (1). An electron multiplier comprising within an evacuated envelope a photo-electric cathode deposited on the inner wall of the envelope, an electron collector and therebetween a plurality of dynode electrodes which are so arranged that there is substantially no straight line passage for light from the cathode to the collector, has light attenuating means disposed between the photo-cathode and collector in the wall of the envelope wall or around the latter so as substantially to reduce the passage of light undergoing multiple internal reflections in the envelope wall. In the construction shown in Fig. 1 the envelope 1 is formed with a reentrant portion 15, the inner and/or outer surfaces of which are rendered opaque by painting. The re-entrant portion 15 may be of glass of dark colour and extends into the envelope sufficiently to obscure the ends of the glass rods 12 supporting the dynodes 6 from the photocathode 3. The photo-cathode 3 is provided with a contact member 4. Each of the dynodes 6 comprises a box 8 having a plurality of obliquely disposed louvres 10 and a wire mesh 9. In the construction shown in Fig. 2 an annular metal ring which may be of " Kovar " (Registered Trade Mark) is sealed into the wall of the envelope 1 and obscures the ends of the rods 12 from the photo-cathode 3. The metal ring 16 may be connected to the photo-cathode 3 either internally or externally of the envelope. In the construction shown in Fig. 3 part 22 of the envelope wall is formed of a light attenuating glass and a cylindrical shield electrode 17 is supported from the glass rods 12 by eyelets 20 and has a circular aperture 19. The electrode 17 is connected to the photo-cathode 3 by a connecting strip 21. According to the Provisional Specification the material of the photo-cathode 3 deposited on the end wall of the envelope may extend along part of the cylindrical surface of the envelope.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB299516X | 1951-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB745811A true GB745811A (en) | 1956-03-07 |
Family
ID=10299856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7006/51A Expired GB745811A (en) | 1951-03-27 | 1951-03-27 | Improvements relating to electron multipliers |
Country Status (5)
Country | Link |
---|---|
US (1) | US2841728A (en) |
CH (1) | CH299516A (en) |
DE (1) | DE1014242B (en) |
FR (1) | FR1053071A (en) |
GB (1) | GB745811A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1281043B (en) * | 1957-07-06 | 1968-10-24 | Emi Ltd | Arrangement of louvre-like inclined dynode sheets for electron multiplier tubes |
GB2146169A (en) * | 1983-05-25 | 1985-04-11 | Philips Nv | Photomultiplier tube |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1031902B (en) * | 1953-11-09 | 1958-06-12 | Siemens Ag Albis | Image converter tube |
GB976619A (en) * | 1960-03-05 | 1964-12-02 | Emi Ltd | Improvements in or relating to photo-emissive devices |
US3039017A (en) * | 1960-04-12 | 1962-06-12 | Clinton E Brown | Image intensifier apparatus |
DE1236679B (en) * | 1965-01-15 | 1967-03-16 | Fernseh Gmbh | Photocell with secondary electron multiplier and with shielding devices against transmission of light from the space containing the secondary electron multiplier to the photocathode |
US3510714A (en) * | 1967-05-01 | 1970-05-05 | Research Corp | Solar energy converter with trough-shaped cathode and shielded,planar anode |
GB2030355B (en) * | 1978-09-15 | 1982-08-25 | English Electric Valve Co Ltd | Electron beam tubes |
US4393322A (en) * | 1980-08-15 | 1983-07-12 | Warner Lambert Technologies, Inc. | Image intensifier faceplate |
DE4009334C2 (en) * | 1990-03-23 | 2000-11-23 | Perkin Elmer Bodenseewerk Zwei | Illumination arrangement for applying a photomultiplier to a two-beam photometer |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2732514A (en) * | 1956-01-24 | henderson | ||
BE405023A (en) * | 1933-09-13 | |||
US2179083A (en) * | 1936-08-08 | 1939-11-07 | Aeg | Electron image tube |
DE889657C (en) * | 1937-05-04 | 1953-09-14 | Fernseh Gmbh | Secondary electron amplifier |
US2231698A (en) * | 1938-06-10 | 1941-02-11 | Rca Corp | Electron multiplier |
NL57179C (en) * | 1939-03-28 | |||
BE440048A (en) * | 1939-12-16 | |||
GB597186A (en) * | 1945-08-10 | 1948-01-20 | Farnsworth Television & Radio | Photoelectric cell using electron multiplication |
-
1951
- 1951-03-27 GB GB7006/51A patent/GB745811A/en not_active Expired
-
1952
- 1952-03-25 DE DEE5259A patent/DE1014242B/en active Pending
- 1952-03-25 US US278347A patent/US2841728A/en not_active Expired - Lifetime
- 1952-03-26 FR FR1053071D patent/FR1053071A/en not_active Expired
- 1952-03-26 CH CH299516D patent/CH299516A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1281043B (en) * | 1957-07-06 | 1968-10-24 | Emi Ltd | Arrangement of louvre-like inclined dynode sheets for electron multiplier tubes |
GB2146169A (en) * | 1983-05-25 | 1985-04-11 | Philips Nv | Photomultiplier tube |
Also Published As
Publication number | Publication date |
---|---|
DE1014242B (en) | 1957-08-22 |
CH299516A (en) | 1954-06-15 |
FR1053071A (en) | 1954-01-29 |
US2841728A (en) | 1958-07-01 |
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