Title:
高いルーメン維持および寿命末期調節の知識ベースドライバ装置
Document Type and Number:
Japanese Patent JP5814924
Kind Code:
B2
Abstract:
A knowledge-based driver is provided for powering a solid-state light source with a constant current, including a memory that stores lumens per amp and volts per amp performance characterizations of the light source over time, and a controller that operates in a test mode to estimate the light source degradation based on voltage feedback obtained at a predetermined test current value, and to adjust the drive current in normal operating mode according to the estimated device degradation to implement constant lumens control without external optical feedback components.
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Inventors:
Roberts, Bruce Richard
Aulong Zebu, Dieder
Pain, Kevin Kerr
Aulong Zebu, Dieder
Pain, Kevin Kerr
Application Number:
JP2012535216A
Publication Date:
November 17, 2015
Filing Date:
September 28, 2010
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
H05B37/02; H05B44/00; H01L33/00; H01L51/50
Domestic Patent References:
| JP200998433A | ||||
| JP2009238870A | ||||
| JP200933098A | ||||
| JP2004134147A | ||||
| JP20049825A | ||||
| JP2007173088A | ||||
| JP2002189448A | ||||
| JP2002278514A | ||||
| JP2004296841A |
Attorney, Agent or Firm:
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka
Hirokazu Ogura
Toshihisa Kurokawa
Takuto Tanaka