SE9903226D0 - Light source - Google Patents

Light source

Info

Publication number
SE9903226D0
SE9903226D0 SE9903226A SE9903226A SE9903226D0 SE 9903226 D0 SE9903226 D0 SE 9903226D0 SE 9903226 A SE9903226 A SE 9903226A SE 9903226 A SE9903226 A SE 9903226A SE 9903226 D0 SE9903226 D0 SE 9903226D0
Authority
SE
Sweden
Prior art keywords
field emission
cylindrical surface
emission cathode
light source
layer
Prior art date
Application number
SE9903226A
Other languages
Swedish (sv)
Other versions
SE520550C2 (en
SE9903226L (en
Inventor
Jan Kjellman
Magnus Lindmark
Original Assignee
Nanolight Int 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
Priority claimed from SE9902823A external-priority patent/SE9902823D0/en
Application filed by Nanolight Int Ltd filed Critical Nanolight Int Ltd
Priority to SE9903226A priority Critical patent/SE520550C2/en
Publication of SE9903226D0 publication Critical patent/SE9903226D0/en
Priority to SE9903662A priority patent/SE515377E/en
Priority to EP00955209A priority patent/EP1206790A1/en
Priority to AU67440/00A priority patent/AU6744000A/en
Priority to US10/031,838 priority patent/US6873095B1/en
Priority to JP2001514447A priority patent/JP2003506824A/en
Priority to PCT/SE2000/001522 priority patent/WO2001009914A1/en
Publication of SE9903226L publication Critical patent/SE9903226L/en
Publication of SE520550C2 publication Critical patent/SE520550C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J63/00—Cathode-ray or electron-stream lamps
    • H01J63/06—Lamps with luminescent screen excited by the ray or stream
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H01J1/3042—Field-emissive cathodes microengineered, e.g. Spindt-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • H01J19/24—Cold cathodes, e.g. field-emissive cathode

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

A light source comprises a phosphor layer excited to luminescence by electron bombardment from a field emission cathode. The field emission cathode comprises an elongate wire-shaped carrier with a cylindrical surface and a diameter of 0.5-5 mm. The cylindrical surface has conductive surface irregularities in the form of tips with a radial extension of less than 10 mum. A light source (10) comprises an evacuated container with walls (20). The walls comprise an outer glass layer (23) coated on the inside with a phosphor layer (24) forming a luminescent layer, and a conductive layer (25) forming an anode. The phosphor layer is excited to luminescence by electron bombardment from a field emission cathode (40) inside the container. The field emission cathode comprises an elongate wire-shaped carrier with a cylindrical surface and a diameter of 0.5-5 mm. A portion of the cylindrical surface is provided with conductive surface irregularities in the form of tips with a radial extension of less than 10 mum.
SE9903226A 1999-07-30 1999-09-10 Light source for illumination uses a field emission cathode comprising an elongate wire-shaped carrier with conductive surface irregularities in the form of tips SE520550C2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SE9903226A SE520550C2 (en) 1999-07-30 1999-09-10 Light source for illumination uses a field emission cathode comprising an elongate wire-shaped carrier with conductive surface irregularities in the form of tips
SE9903662A SE515377E (en) 1999-07-30 1999-10-12 Light source including a field emission cathode
EP00955209A EP1206790A1 (en) 1999-07-30 2000-07-28 A light source, and a field emission cathode
AU67440/00A AU6744000A (en) 1999-07-30 2000-07-28 A light source, and a field emission cathode
US10/031,838 US6873095B1 (en) 1999-07-30 2000-07-28 Light source, and a field emission cathode
JP2001514447A JP2003506824A (en) 1999-07-30 2000-07-28 Light source and field emission cathode
PCT/SE2000/001522 WO2001009914A1 (en) 1999-07-30 2000-07-28 A light source, and a field emission cathode

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9902823A SE9902823D0 (en) 1999-07-30 1999-07-30 A light source, and a field emission cathode
SE9903226A SE520550C2 (en) 1999-07-30 1999-09-10 Light source for illumination uses a field emission cathode comprising an elongate wire-shaped carrier with conductive surface irregularities in the form of tips

Publications (3)

Publication Number Publication Date
SE9903226D0 true SE9903226D0 (en) 1999-09-10
SE9903226L SE9903226L (en) 2001-01-31
SE520550C2 SE520550C2 (en) 2003-07-22

Family

ID=26663627

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9903226A SE520550C2 (en) 1999-07-30 1999-09-10 Light source for illumination uses a field emission cathode comprising an elongate wire-shaped carrier with conductive surface irregularities in the form of tips

Country Status (1)

Country Link
SE (1) SE520550C2 (en)

Also Published As

Publication number Publication date
SE520550C2 (en) 2003-07-22
SE9903226L (en) 2001-01-31

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Legal Events

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