GB1328772A - Method of securing a window in an electric discharge tube - Google Patents

Method of securing a window in an electric discharge tube

Info

Publication number
GB1328772A
GB1328772A GB362672A GB362672A GB1328772A GB 1328772 A GB1328772 A GB 1328772A GB 362672 A GB362672 A GB 362672A GB 362672 A GB362672 A GB 362672A GB 1328772 A GB1328772 A GB 1328772A
Authority
GB
United Kingdom
Prior art keywords
tube
groove
soldering material
window
frame member
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
Application number
GB362672A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1328772A publication Critical patent/GB1328772A/en
Expired legal-status Critical Current

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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/18—Windows permeable to X-rays, gamma-rays, or particles

Landscapes

  • Light Guides In General And Applications Therefor (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

1328772 Soldering PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 Jan 1972 [29 Jan 1971] 3626/72 Heading B3R A method of securing a window 6 in an electric discharge tube 10 comprises precoating the joint surfaces of the windows and of a frame member 1 which forms or will form part of the tube, with a metal adapted to alloy with the soldering material, providing the soldering material between the surfaces and heating under vacuum to degas the tube, the pressures on either side of the window being the same during the heating operation and the soldering material having a melting point lower than the temperature reached during the heating operation. The frame member 1 may be of nickel-cobalt-iron alloy, the windows 6 of magnesium fluoride, the coating metal gold, the soldering material indium and the firing temperature 300‹ C. The soldering material may be provided in the form of a ring of wire placed in an annular groove 4 in a shoulder 5 of the frame, the wire being of the same diameter as the groove section. The frame has an outer annular V-section formation 2 and to complete the vacuum sealing of the tube the part 2 may be pressed into an indiumfilled V-section groove 12 of a sleeve 7 attached to the discharge tube envelope. Alternatively the part 2 and groove 12 may be gold plated and soldered with indium provided in the groove. The tube may be a photo-multiplier tube provided with a bi- or trialkali photocathode. Alternative embodiments of the frame member are described (Figs. 2, 3, not shown).
GB362672A 1971-01-29 1972-01-26 Method of securing a window in an electric discharge tube Expired GB1328772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7103067A FR2123757A5 (en) 1971-01-29 1971-01-29

Publications (1)

Publication Number Publication Date
GB1328772A true GB1328772A (en) 1973-09-05

Family

ID=9071130

Family Applications (1)

Application Number Title Priority Date Filing Date
GB362672A Expired GB1328772A (en) 1971-01-29 1972-01-26 Method of securing a window in an electric discharge tube

Country Status (4)

Country Link
CA (1) CA956521A (en)
DE (1) DE2165690A1 (en)
FR (1) FR2123757A5 (en)
GB (1) GB1328772A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0820089A1 (en) * 1996-07-16 1998-01-21 Hamamatsu Photonics K.K. Electron tube
US6198221B1 (en) 1996-07-16 2001-03-06 Hamamatsu Photonics K.K. Electron tube

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7711776A (en) * 1977-10-27 1978-04-28 Philips Nv PROCEDURE FOR CONNECTING METAL FLUORIDES TO A BODY CONSTITUTED OF GLASS, CERAMIC OR METAL AND PRODUCTS OBTAINED BY USING THIS PROCESS.
FR2501906A1 (en) * 1981-03-16 1982-09-17 Thomson Csf Pole pieces fixing method onto exterior of TWT - uses low temp. which does not affect previous welds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0820089A1 (en) * 1996-07-16 1998-01-21 Hamamatsu Photonics K.K. Electron tube
US5883466A (en) * 1996-07-16 1999-03-16 Hamamatsu Photonics K.K. Electron tube
US6198221B1 (en) 1996-07-16 2001-03-06 Hamamatsu Photonics K.K. Electron tube

Also Published As

Publication number Publication date
CA956521A (en) 1974-10-22
FR2123757A5 (en) 1972-09-15
DE2165690A1 (en) 1972-08-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee