LED luminaire with automatic luminance compensation

Details LED luminaire with automatic luminance compensation LED luminaire with automatic luminance compensation

2011-08-23

2011-08-23

Alavi, Ali (Department: 2875)

Illumination

Light modifier

Reflector

C362S344000, C362S276000, C362S020000, C315S294000, C307S066000

Reexamination Certificate

active

08002445

ABSTRACT:
An LED luminaire for normal or emergency lighting has a lamp section comprising a least one LED lamp, the LED lamp having an LED chip and a reflector section. The reflector section is formed of silver and is positioned to reflect light from the LED chip. A power section is coupled to supply power to the lamp section. A detector section has a silver-plated detector and is functional to detect sulfuration of the reflector section as a resistance value change. The power section is operable to adjust the power supplied to the lamp section upon detecting an increase in the resistance value at the silver-plated detector of the detector section.

REFERENCES:
patent: 5521432 (1996-05-01), Tsuji et al.
patent: 2004/0043668 (2004-03-01), Ikuta
patent: 2005/0017380 (2005-01-01), Namespetra et al.
patent: 2001-014909 (2001-01-01), None
patent: 2004-039289 (2004-05-01), None
patent: 2007109915 (2007-04-01), None
patent: 2008-098190 (2008-04-01), None

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