Apparatus and method for compensating for reduced light...

Details Apparatus and method for compensating for reduced light... Apparatus and method for compensating for reduced light...

2007-02-13

2007-02-13

Chen, Shih-Chao (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Plural periodic switches or multiple contact periodic switch

C315S307000

Reexamination Certificate

active

10785867

ABSTRACT:
A method, apparatus, and system for compensating for lamp lumen depreciation. The method includes operating the lamp under rated wattage for a period towards the first part of operating life of the lamp. Operating wattage is increased at one or more later times. Energy savings are realized. The increases also restore at least some light lost by lamp lumen depreciation. The apparatus uses a timer to track operating time of the lamp. A few wattage changes made at spaced apart times can be made in a number of ways, including changing capacitance to the lamp, or using different taps on the lamp ballast.

REFERENCES:
patent: 4005336 (1977-01-01), Casella
patent: 4009387 (1977-02-01), Nuver
patent: 4189664 (1980-02-01), Hirschfeld
patent: 4292570 (1981-09-01), Engel
patent: 4434388 (1984-02-01), Carver et al.
patent: 4442382 (1984-04-01), Fleck
patent: 4475065 (1984-10-01), Bhalla et al.
patent: 4501994 (1985-02-01), Spreadbury
patent: 4725934 (1988-02-01), Gordin
patent: 4816974 (1989-03-01), Gordin
patent: 4891562 (1990-01-01), Nuckolls et al.
patent: 4924109 (1990-05-01), Weber
patent: 4947303 (1990-08-01), Gordin et al.
patent: 4994718 (1991-02-01), Gordin
patent: 5075828 (1991-12-01), Gordin et al.
patent: 5103143 (1992-04-01), Daub
patent: 5134557 (1992-07-01), Gordin et al.
patent: 5161883 (1992-11-01), Gordin et al.
patent: 5229681 (1993-07-01), Gordin et al.
patent: 5442261 (1995-08-01), Bank et al.
patent: 5469027 (1995-11-01), Uchihashi et al.
patent: 5475360 (1995-12-01), Guidette et al.
patent: 5519286 (1996-05-01), Rodrigues et al.
patent: 5856721 (1999-01-01), Gordin et al.
patent: 6031340 (2000-02-01), Brosius
patent: 6075326 (2000-06-01), Nostwick
patent: 6150772 (2000-11-01), Crane
patent: 6191568 (2001-02-01), Poletti
patent: 6207943 (2001-03-01), Smelker
patent: 6215254 (2001-04-01), Honda et al.
patent: 6320323 (2001-11-01), Buell et al.
patent: 6373201 (2002-04-01), Morgan et al.
patent: 6376996 (2002-04-01), Olson
patent: 6501231 (2002-12-01), Hyland et al.
patent: 6515430 (2003-02-01), Kayser
patent: 6545433 (2003-04-01), Beij et al.
patent: 6577075 (2003-06-01), Romano et al.
patent: 6583574 (2003-06-01), Ann et al.
patent: 2003/0025463 (2003-02-01), Mattas et al.
patent: 2003/0090215 (2003-05-01), Beasley
patent: 195 40 326 (1997-04-01), None
patent: 199 12 517 (2000-09-01), None
patent: 0 536 877 (1993-04-01), None
patent: 0669788 (1995-08-01), None
patent: 406163163 (1994-06-01), None

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