Electric lamp and discharge devices: systems – Current and/or voltage regulation – Pre-selectable regulator systems
Reexamination Certificate
2006-07-11
2010-02-23
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Pre-selectable regulator systems
C315S308000, C315S360000
Reexamination Certificate
active
07667413
ABSTRACT:
Provided is a method for lighting a high pressure discharge lamp capable of increasing the life thereof. The lighting method is as follows. When the time elapse after lighting up the discharge lamp is within a predetermined condition (e.g. 5 minutes or less), constant current control is performed if the lamp voltage is lower than switching voltage (here, a first voltage value V1) and constant power control is performed to maintain the lamp power at a power value W1if the lamp voltage is equal to or above the switching voltage. After the predetermined condition (5 minutes) is exceeded, the constant power control is performed by lowering the value of the switching voltage from the first voltage value V1to the second voltage value V2. If the lamp voltage is equal to or above the switching voltage lowered, the lamp power is maintained at power value W1.
REFERENCES:
patent: 5491388 (1996-02-01), Nobuyuki et al.
patent: 6153987 (2000-11-01), Toda et al.
patent: 6750620 (2004-06-01), Suzuki
patent: 6914395 (2005-07-01), Yamauchi et al.
patent: 7301289 (2007-11-01), Okamoto et al.
patent: 2001/0038267 (2001-11-01), Ono et al.
patent: 2004/0090184 (2004-05-01), Arimoto et al.
patent: 2005/0023993 (2005-02-01), Ono et al.
patent: 2005/0140311 (2005-06-01), Suzuki et al.
patent: 2007/0164687 (2007-07-01), Watanabe et al.
patent: 9-330795 (1997-12-01), None
patent: 2001-312997 (2001-11-01), None
patent: 2004-172086 (2004-06-01), None
patent: 2005-32711 (2005-02-01), None
patent: 2005-38815 (2005-02-01), None
patent: 2005-122997 (2005-05-01), None
patent: 2005-190766 (2005-07-01), None
Ikeda Masaru
Ono Syunsuke
Ozasa Minoru
Yamada Go
Yamamoto Masahiro
Panasonic Corporation
Tran Thuy Vinh
LandOfFree
High pressure discharge lamp operation method, operation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High pressure discharge lamp operation method, operation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High pressure discharge lamp operation method, operation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4166471