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    4.
    发明专利
    未知

    公开(公告)号：SE510412C2

    公开(公告)日：1999-05-25

    申请号：SE9702275

    申请日：1997-06-13

    Applicant: LIGHTLAB AB

    Inventor： KAFTANOV V S ,  SUVOROV A L ,  SHESHIN E P ,  OLSFORS JAN

    IPC: H01J1/304 ,  H01J63/02 ,  H01J63/04 ,  H01J63/06 ,  H01J1/30

    Abstract: A field emission cathode has particular use in a light source. The light source includes an evacuated container having walls, at least a portion of which consists of an outer glass layer which on at least a major part thereof is coated on the inside with a layer of phosphor forming a luminescent layer and a conductive layer forming an anode. The layer of phosphor is excited to luminescence by electron bombardment from a field emission cathode located in the interior of the container. A modulator electrode is arranged between the cathode and the anode for creating an electrical field necessary for the emission of electrons. The field emission cathode, includes a base body, and field emitting bodies extending from the base body. The base body includes a longitudinally extending core having a central axis. The field emitting bodies are elongate and are distributed along at least a part of the length of the core, extend radially outwards from the core, and have free ends provided with field emitting surfaces.

    5.
    发明专利
    未知

    公开(公告)号：SE9702275L

    公开(公告)日：1998-12-14

    申请号：SE9702275

    申请日：1997-06-13

    Applicant: LIGHTLAB AB

    Inventor： KAFTANOV V S ,  SUVOROV A L ,  SHESHIN E P ,  OLSFORS JAN

    IPC: H01J1/304 ,  H01J63/02 ,  H01J63/04 ,  H01J63/06 ,  H01J1/30

    Abstract: A field emission cathode has particular use in a light source. The light source includes an evacuated container having walls, at least a portion of which consists of an outer glass layer which on at least a major part thereof is coated on the inside with a layer of phosphor forming a luminescent layer and a conductive layer forming an anode. The layer of phosphor is excited to luminescence by electron bombardment from a field emission cathode located in the interior of the container. A modulator electrode is arranged between the cathode and the anode for creating an electrical field necessary for the emission of electrons. The field emission cathode, includes a base body, and field emitting bodies extending from the base body. The base body includes a longitudinally extending core having a central axis. The field emitting bodies are elongate and are distributed along at least a part of the length of the core, extend radially outwards from the core, and have free ends provided with field emitting surfaces.

    A FIELD EMISSION CATHODE AND METHODS IN THE PRODUCTION THEREOF
    9.
    发明专利
    A FIELD EMISSION CATHODE AND METHODS IN THE PRODUCTION THEREOF 未知

    公开(公告)号：CA2212681C

    公开(公告)日：2001-12-11

    申请号：CA2212681

    申请日：1996-02-15

    Applicant: LIGHTLAB AB

    Inventor： KAFTANOV V S ,  SHESHIN E P ,  SUVOROV A L

    IPC: H01J9/02 ,  H01J1/304 ,  H01J29/04 ,  H01J31/12 ,  H01J1/30

    Abstract: An improved field emission cathode and methods for fabricating such a cathod e are disclosed. In the methods of the invention, the field emission cathode i s made from at least one body containing a first substance. The method steps include a preparation of irregularities in an emitting surface of the body, adding to the emitting surface of the body ions of a second substance with a low work function, and modifying the emitting surface by inducing field emission in applying a variable electric field to the body and increasing th e field strength in steps.

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