Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2005-07-26
2005-07-26
Dinh, Trinh Vo (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C257S079000, C257S098000
Reexamination Certificate
active
06922024
ABSTRACT:
An LED lamp includes at least one LED chip having an emission peak wavelength of 400 nm to 490 nm, and a wavelength converting portion including a phosphor for transforming the emission of the LED chip into light having a longer wavelength than that of the emission. The LED lamp further includes a filtering member, of which the spectral transmittance is adjusted so as to minimize color shifting even if the amount of current supplied to the LED chip to make the LED chip produce the emission has changed.
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patent: 6417019 (2002-07-01), Mueller et al.
patent: 6806658 (2004-10-01), Tan et al.
patent: 2003/0189829 (2003-10-01), Shimizu et al.
patent: 2004/0119086 (2004-06-01), Yano et al.
patent: 05-290818 (1993-11-01), None
patent: 10-065221 (1998-03-01), None
patent: 2001-358370 (2001-12-01), None
Matsui Nobuyuki
Setomoto Tatsumi
Shimizu Masanori
Tamura Tetsushi
Yano Tadashi
Akin Gump Strauss Hauer & Feld & LLP
Dinh Trinh Vo
Matsushita Electric - Industrial Co., Ltd.
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