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    • 5. 发明申请
    • ELECTRONIC CIRCUIT AND METHOD OF SUPPLYING ENERGY TO A HIGH-PRESSURE GAS-DISCHARGE LAMP
    • 高压气体放电灯的电子电路和能源供应方法
    • WO2003075618A1
    • 2003-09-12
    • PCT/IB2003/000710
    • 2003-02-26
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.LÜRKENS, PeterMÖNCH, Holger
    • LÜRKENS, PeterMÖNCH, Holger
    • H05B41/292
    • H05B41/2923
    • The invention relates to an electronic circuit and a method of supplying energy to a high-pressure gas-discharge lamp H, 65, 75. The electronic circuit comprises a line-supply input section 62, 72 to receive and convert an a.c. voltage from an a.c. line-supply system 61, 71, an energy storage means 63, 73 to store the energy put out by the line-supply input section 62, 72 and a lamp-current regulating unit 64, 74 that is supplied with an input voltage U1 by the line-supply input section 62, 72 via the energy storage means 63, 73 and that makes available a lamp current I2 for a high-pressure gas-discharge lamp H, 65, 75. To make it possible for the energy storage means 63, 73 to be particularly small, it is proposed that the lamp-current regulating unit 64, 74 have a power section L, D, C, S, A1, A2, K having a transconductive property. If there is a drop in the input voltage U1, this property then automatically produces a reduction in the lamp current I2 made available to a high-pressure gas-discharge lamp 65, 75, H. This ensures a particularly fast adjustment to voltage fluctuations. The invention also relates to a corresponding method.
    • 本发明涉及一种电子电路和向高压气体放电灯H,65,75提供能量的方法。电子电路包括一个线路供电输入部分62,72,用于接收和转换一个交流电。 电压来自a.c. 线路供电系统61,71,用于存储由线路供电输入部分62,72输出的能量的能量存储装置63,73和通过输入电压U1供给的电流调节单元64,74 经由能量存储装置63,73的线路供电输入部分62,72,并为高压气体放电灯H,65,75提供灯电流I2。为了使能量存储装置63成为可能 73特别小,提出灯电流调节单元64,74具有具有导电性的功率部L,D,C,S,A1,A2,K。 如果输入电压U1下降,则该特性自动产生可用于高压气体放电灯65,75,H的灯电流I2的减小。这确保了对电压波动的特别快速的调整。 本发明还涉及相应的方法。
    • 6. 发明申请
    • VIDEO PROJECTION SYSTEM
    • 视频投影系统
    • WO2003056841A1
    • 2003-07-10
    • PCT/IB2002/005203
    • 2002-12-09
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.MÖNCH, Holger
    • MÖNCH, Holger
    • H04N9/31
    • H04N9/3114F21S10/007F21V9/40
    • 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.
    • 本发明涉及一种视频投影系统,其至少包括耦合到用于聚焦光束的反射器的光源,具有多个透光段的电动驱动色轮,所述段中的至少一些是二向色滤光器,用于 颜色为红色,绿色和蓝色,而所述轮的旋转速度可以通过控制来改变,将聚焦光束成像到显示器上的透镜系统,至少包括显示器和显示控制的显示系统,以及 投影透镜,其中视频投影系统具有视频投影模式和照明模式,此外,色轮在照明模式下是静止的,并且色轮的至少一个段可以被赋予光束中限定的位置。
    • 10. 发明申请
    • PROJECTION SYSTEM
    • 投影系统
    • WO2004010710A2
    • 2004-01-29
    • PCT/IB2003/003176
    • 2003-07-11
    • PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBHKONINKLIJKE PHILIPS ELECTRONICS N.V.MÖNCH, Holger
    • MÖNCH, Holger
    • H04N9/00
    • H04N9/3114H04N9/3155H04N9/3194
    • A projection system having a projection display (20), at least one light source (10), and a sensor means for sensing and compensating for changes in the luminous flux emitted by the at least one light source (10) is described. The sensor means comprises in this case at least one sensor arrangement (30; 31, 32; 33, 34) for sensing components (M) of the light from the light source (10) that are directed into a region surrounding an entering face of an optical component (11) of the projection system. It has been found that there is a very good correlation between these components (M) of the light from the light source (10) and those other components (I) of the light that actually reach the projection display (20), which means that by controlling a power supply unit (10c) for the light source (10) and/or a driver unit (20a) driving the projection display (20) in a suitable manner it is possible very effectively to suppress fluctuations in brightness that occur as a result of, for example, unstable arc discharges.
    • 具有投影显示器(20),至少一个光源(10)和传感器装置的投影系统,所述传感器装置用于感测和补偿由所述至少一个光源发射的光通量的变化 (10)被描述。 传感器装置在这种情况下包括用于感测来自光源(10)的光的组分(M)的至少一个传感器装置(30; 31,32; 33,34),所述传感器装置被引导到围绕 投影系统的光学部件(11)。 已经发现,来自光源(10)的光的这些分量(M)与实际到达投影显示器(20)的光的那些其他分量(I)之间存在非常好的相关性,这意味着 通过以适当的方式控制用于光源(10)的电源单元(10c)和/或驱动投影显示器(20)的驱动器单元(20a),可以非常有效地抑制作为 例如,电弧放电不稳定的结果。