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    Lamp without electrodes, supplied by microwaves
    11.
    发明专利
    Lamp without electrodes, supplied by microwaves 未知

    公开(公告)号：DE3318795A1

    公开(公告)日：1983-12-15

    申请号：DE3318795

    申请日：1983-05-24

    Applicant: FUSION SYSTEMS CORP

    Inventor： URY MICHAEL G ,  WOOD CHARLES H

    IPC: F21V29/00 ,  F21S2/00 ,  H01J65/04 ,  H05H1/46

    Abstract: A light source without electrodes which is supplied by microwaves for producing a bright output radiation contains a lamp structure having a microwave chamber and a lamp sheath which is arranged therein, contains a medium producing a plasma, and whose maximum dimension is considerably less than one wavelength. In order to achieve the desired emission, the interior of the chamber is coated with a UV-reflecting material, and the chamber has an opening through which UV radiation can emerge: the opening is covered by a metallic grid. The chamber is constructed such that it is close to resonance in the case of a single wavelength, and the lamp sheath has a filling containing mercury at an operating pressure of 1 to 2 atmospheres, while the coupling to the sheath takes place with a power density of at least 250 to 300 W/cm in order that a relatively high output radiation in the low UV range with a relatively high brightness is obtained. In order to cool the lamp, the sheath is rotated about an axis passing through it, while at least one cooling gas jet is directed against it.

    16.
    发明专利
    未知

    公开(公告)号：DE3916801A1

    公开(公告)日：1989-11-30

    申请号：DE3916801

    申请日：1989-05-23

    Applicant: FUSION SYSTEMS CORP

    Inventor： URY MICHAEL G ,  JONES WILLIAM J

    IPC: H01J23/34 ,  G01R31/06 ,  G01R31/25

    Abstract: A method and apparatus for detecting system failure in a magnetron power supply circuit. The apparatus is capable of providing an indication as to whether it is the power supply or the magnetron which has failed. A dual half wave doubler power supply circuit is provided and the currents corresponding to the respective dual portions are measured. The currents are compared to detect a failure of one of the dual power supply circuits while a sum of the currents may detect a failure of the magnetron.

    18.
    发明专利
    未知

    公开(公告)号：DE3323637A1

    公开(公告)日：1984-01-05

    申请号：DE3323637

    申请日：1983-06-30

    Applicant: FUSION SYSTEMS CORP

    Inventor： URY MICHAEL G ,  WOOD CHARLES H ,  RYAN PATRICK J

    IPC: F21S2/00 ,  H01J65/04 ,  H05B6/64 ,  H05B41/24 ,  H05B41/00 ,  F21V23/00 ,  H02J17/00

    Abstract: A microwave generated electrodeless lamp using a single magnetron, and an improved lamp envelope therefor. An elongated lamp envelope containing a plasma forming medium is disposed in a microwave chamber comprised of a reflector and mesh. The reflector includes a pair of coupling slots, each of which is disposed equidistant from the ends of the lamp envelope. A waveguide means is provided which has a wall which is comprised of a portion of the reflector which includes the slots, and has means for introducing microwave energy thereto at an area equidistant from the two slots so that the energy couples equally to the slots. When the frequency of the microwave energy and chamber dimensions are arranged so that a symmetrical standing wave exists in the chamber, a balanced system results wherein after a short start-up period, approximately equal light output is obtained from the respective ends of the lamp envelop. In order to prevent re-condensation of the envelope fill during operation at areas of low temperature, an improved envelope is provided in which such areas are severly tapered to cause hotter operation thereat.

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