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1. 发明授权

US08008872B2 Method of shutting down a high pressure discharge lamp and driving unit for driving a high pressure discharge lamp 失效
标题翻译：关闭高压放电灯和用于驱动高压放电灯的驱动单元的方法
公开(公告)号：US08008872B2
公开(公告)日：2011-08-30
申请号：US12300477
申请日：2007-04-25
申请人： Tobias Georg Tolle , Ludo Valere Maurice Schreel , Carsten Deppe
发明人： Tobias Georg Tolle , Ludo Valere Maurice Schreel , Carsten Deppe
IPC分类号： H05B41/36 , H05B41/24
CPC分类号： H05B41/2928 , H04N9/3144 , H04N9/3155 , H05B41/384 , Y02B20/206
摘要： The invention describes a method of shutting down a high pressure discharge lamp (1) in which a pair of electrodes (2) is disposed in an arc tube (3), which method comprises reducing, upon receipt of a shut-down request (SR), the lamp power (P) towards a reduced power level (PR) required to sustain a long-term arc discharge between the electrodes (2), and driving the lamp (1) towards the reduced power level (PR) for a reduced power duration before completely shutting down the lamp power (P), whereby, prior to reducing the lamp power (P) towards the reduced power level (PR), the lamp power (P) is reduced to an undershoot power level (Pu), which undershoot power level (Pu) is lower than the reduced power level (PR) required to sustain a long-term arc discharge between the electrodes (2), and the lamp is driven at this undershoot power level (Pu) for an undershoot power duration (tu) before increasing the lamp power (P) again to approach the reduced power level (PR). Moreover the invention describes an appropriate driving unit (4) for driving a high pressure discharge lamp (1) and an image rendering system (40), particularly a projector system, comprising such a driving unit (4).
摘要翻译：本发明描述了一种关闭其中一对电极（2）设置在电弧管（3）中的高压放电灯（1）的方法，该方法包括在接收到关闭请求（SR ），朝向维持电极（2）之间的长期电弧放电所需的降低功率电平（PR）的灯功率（P）），并且朝着降低的功率电平（PR）驱动灯（1）以减少在完全关闭灯泡功率（P）之前的功率持续时间，由此，在将灯功率（P）降低到降低功率水平（PR）之前，灯功率（P）减小到下冲功率水平（Pu）其功率水平（Pu）低于维持电极（2）之间的长期电弧放电所需的降低的功率电平（PR），并且灯以该下冲功率电平（Pu）被驱动用于下冲功率在再次提高灯功率（P）以接近降低功率电平（PR）之前的持续时间（tu）。此外，本发明描述了用于驱动高压放电灯（1）和图像渲染系统（40）的合适的驱动单元（4），特别是包括这种驱动单元（4）的投影仪系统。

2. 发明申请

US20090261756A1 METHOD OF SHUTTING DOWN A HIGH PRESSURE DISCHARGE LAMP AND DRIVING UNIT FOR DRIVING A HIGH PRESSURE DISCHARGE LAMP 失效
标题翻译：切断高压放电灯和驱动单元的方法，用于驱动高压放电灯
公开(公告)号：US20090261756A1
公开(公告)日：2009-10-22
申请号：US12300477
申请日：2007-04-25
申请人： Tobias Georg Tolle , Ludo Valere Maurice Schreel , Carsten Deppe
发明人： Tobias Georg Tolle , Ludo Valere Maurice Schreel , Carsten Deppe
IPC分类号： H05B41/36
CPC分类号： H05B41/2928 , H04N9/3144 , H04N9/3155 , H05B41/384 , Y02B20/206
摘要： The invention describes a method of shutting down a high pressure discharge lamp (1) in which a pair of electrodes (2) is disposed in an arc tube (3), which method comprises reducing, upon receipt of a shut-down request (SR), the lamp power (P) towards a reduced power level (PR) required to sustain a long-term arc discharge between the electrodes (2), and driving the lamp (1) towards the reduced power level (PR) for a reduced power duration before completely shutting down the lamp power (P), whereby, prior to reducing the lamp power (P) towards the reduced power level (PR), the lamp power (P) is reduced to an undershoot power level (Pu), which undershoot power level (Pu) is lower than the reduced power level (PR) required to sustain a long-term arc discharge between the electrodes (2), and the lamp is driven at this undershoot power level (Pu) for an undershoot power duration (tu) before increasing the lamp power (P) again to approach the reduced power level (PR). Moreover the invention describes an appropriate driving unit (4) for driving a high pressure discharge lamp (1) and an image rendering system (40), particularly a projector system, comprising such a driving unit (4).
摘要翻译：本发明描述了一种关闭其中一对电极（2）设置在电弧管（3）中的高压放电灯（1）的方法，该方法包括在接收到关闭请求（SR ），朝向维持电极（2）之间的长期电弧放电所需的降低功率电平（PR）的灯功率（P）），并且朝着降低的功率电平（PR）驱动灯（1）以减少在完全关闭灯泡功率（P）之前的功率持续时间，由此，在将灯功率（P）降低到降低功率水平（PR）之前，灯功率（P）减小到下冲功率水平（Pu）其功率水平（Pu）低于维持电极（2）之间的长期电弧放电所需的降低的功率电平（PR），并且灯以该下冲功率电平（Pu）被驱动用于下冲功率在再次提高灯功率（P）以接近降低功率电平（PR）之前的持续时间（tu）。此外，本发明描述了用于驱动高压放电灯（1）和图像渲染系统（40）的合适的驱动单元（4），特别是包括这种驱动单元（4）的投影仪系统。

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