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    11.
    发明专利
    未知

    公开(公告)号：DE69912101T2

    公开(公告)日：2004-07-29

    申请号：DE69912101

    申请日：1999-12-13

    Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS INTELLECTUAL PROPERTY

    Inventor： HEVINGA A ,  MOENCH HOLGER ,  RIEDERER XAVER

    IPC: G02F1/13357 ,  H04N5/74 ,  H05B41/14 ,  H05B41/16 ,  H05B41/288 ,  H05B41/392

    Abstract: A circuit arrangement for operating a high pressure discharge lamp includes input terminals for connection to a supply voltage source, lamp connection terminals for connection of the lamp, and a power supply coupled to the input terminals. The power supply provides a current to the lamp in the form of successive periods of current and includes a pulse generating element for generating a current pulse superpositioned on the periods of the current to the lamp. The pulse generation element is synchronized with an image writing signal.

    14.
    发明专利
    未知

    公开(公告)号：DE60222793D1

    公开(公告)日：2007-11-15

    申请号：DE60222793

    申请日：2002-10-15

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： MOENCH HOLGER ,  RITZ ARND

    IPC: F21V7/04 ,  G03B21/14 ,  F21S2/00 ,  F21V7/00 ,  F21V7/09 ,  F21V7/22 ,  F21V13/00 ,  F21Y101/00 ,  H01J61/02 ,  H01J61/35 ,  H01J61/86 ,  H01J61/88 ,  H04N9/31

    Abstract: An illumination unit has a light source, in particular a high-intensity discharge lamp or an ultra high performance lamp, a main reflector and a back reflector with an aperture opposite the main reflector. Light is reflected from the light source through the aperture onto the main reflector. The centers of the light source and the back reflector are located or shaped relative to each other such that a first sector angle (L 2 -L 2 ') enclosed between the light source center and the edge of the back reflector aperture is smaller than 180°. The efficiency of light emission is considerably increased. Preferred embodiments, each of which can cause a further increase in light output, relate to various shapes of the back reflector and the inner walls of the gas discharge space, as well as to the shape of the part of the glass bulb that surrounds the gas discharge space.

    16.
    发明专利
    未知

    公开(公告)号：DE10231258A1

    公开(公告)日：2004-01-22

    申请号：DE10231258

    申请日：2002-07-11

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： POLLMANN-RETSCH JENS ,  MOENCH HOLGER ,  MAES WOUTER ,  VERSTRAETEN EDMOND M E

    IPC: H01J61/52 ,  H01J61/86 ,  H01J61/35

    Abstract: A discharge lamp, and particularly a high-pressure gas-discharge lamp (an HID (high-intensity discharge) lamp or UHP (ultra-high performance) lamp), having a reflector and a cooling means is described. The cooling means comprises at least one nozzle ( 3 ) by which a flow of gas can be directed onto the discharge lamp, the at least one nozzle ( 3 ) being so arranged that it does not extend, at least to any substantial degree, into a beam path produced by the lamp ( 2 ) and the reflector ( 1 ). In this way, the cooling means does not produce any obstacles on the beam path for the light. With preferred embodiments, it is possible to produce a turbulent flow that surrounds particularly the discharge vessel ( 21 ) of the lamp and that considerably increases the effectiveness of the cooling means. Further embodiments also allow the discharge lamp to be operated in a plurality of different positions without individual regions of the lamp being too little or too severely cooled.

    17.
    发明专利
    未知

    公开(公告)号：DE10200024A1

    公开(公告)日：2003-07-17

    申请号：DE10200024

    申请日：2002-01-02

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： MOENCH HOLGER

    IPC: G03B21/00 ,  F21S10/00 ,  F21V9/40 ,  H04N9/31

    Abstract: The invention relates to a video projection system comprising at least a light source coupled to a reflector for focusing the light beam, a motor-driven color wheel having a plurality of light-transmitting segments, at least some of said segments being dichroic filters for the colors red, green, and blue, while the speed of rotation of said wheel can be modified by a control, a lens system imaging the focused light beam onto a display, a display system comprising at least a display and a display control, and a projection lens, wherein the video projection system has a video projection mode and a lighting mode, and in addition the color wheel is stationary in the lighting mode and at least one segment of the color wheel can be given a defined position in the beam.

    18.
    发明专利
    未知

    公开(公告)号：DE602006008616D1

    公开(公告)日：2009-10-01

    申请号：DE602006008616

    申请日：2006-06-19

    Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV

    Inventor： DEPPE CARSTEN ,  MOENCH HOLGER ,  POLLMANN-RETSCH ,  MUNTERS TOM ,  VAN DEN BERGH JOHN-JOHN PIETER

    IPC: H05B41/26

    Abstract: The invention describes a method of shutting down a high pressure discharge lamp (1) in which a pair of electrodes (2) are disposed in an arc tube (3). This method comprises the steps of reducing the lamp power (PA) to a reduced operation level that enables the maintenance of an arc discharge between the electrodes (2) in a transition state from a lighting state to an extinguished state; driving the lamp (1) at the reduced operation level such that that the lamp (1) cools down; monitoring the lamp voltage (U) during this lamp power reduction process and during driving of the lamp (1) at the reduced operation level with regard to a defined discharge process stability criteria and increasing the lamp power (PA) if the discharge process stability criterion is not satisfied; completely shutting down the lamp power (PA) after sufficient duration to allow the lamp (1) to cool down to a state in which the gas pressure is such that the lamp (1) could be reignited shortly after being extinguished. Moreover the invention describes an appropriate driving unit (7) for driving a high pressure discharge lamp (1) and an image rendering system (40), particularly a projector system, comprising such a driving unit (4).

    20.
    发明专利
    未知

    公开(公告)号：DE602004018158D1

    公开(公告)日：2009-01-15

    申请号：DE602004018158

    申请日：2004-08-20

    Applicant: PHILIPS INTELLECTUAL PROPERTY

    Inventor： MOENCH HOLGER ,  HEUSLER GERO

    IPC: H01S3/063 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/23 ,  H01S5/02 ,  H01S5/40 ,  H04N9/31

    Abstract: The invention relates to a semiconductor diode laser used to pump a waveguide and their use as light source. A waveguide laser ( 15 ) according to the present invention producing visible wavelength radiation from IR wavelength radiation comprising: a) at least one semiconductor diode laser or diode laser bar ( 8 ) producing IR wavelength radiation; b) at least one upconversion layer ( 13 a , 13 b , 13 c) having a thickness of at least 1 mum thicker than the thickness of the emitting layer in the semiconductor diode laser that converts the IR wavelength radiation into visible wavelengths by an upconversion process of photon absorption energy transfer followed by emission; c) at least one optical resonator which recirculates the visible wavelength radiation and/or at least one optical resonator which recirculates the IR wavelength radiation; whereby-the laser diode or laser diode bar and the upconversion layer(s) are arranged on the same substrate or each on a separate substrate ( 12, 14 );-the laser diode or laser diode bar and the upconversion layer(s) are adjacent arranged, whereby a gap between the adjacent arranged diode laser bar and the upconversion layer(s) is formed; or-the laser diode or laser diode bar and the upconversion layer(s) are contacting arranged in this order, and whereby the waveguide laser has a beam quality M2 of >=2 and

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