LED lighting device and method for controlling the same...

Details LED lighting device and method for controlling the same... LED lighting device and method for controlling the same...

2007-03-28

2010-10-12

Vo, Tuyet T. (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

C315S307000, C315S291000, C315S224000, C315S247000

Reexamination Certificate

active

07812553

ABSTRACT:
A Light Emitting Diode (LED) lighting device capable of correcting changes in a wavelength of light output from an LED element caused by changes in temperature, and a method for controlling the same are provided. The lighting device includes a temperature-current converter which generates a current command value to correct change in a wavelength of output light based on temperature information indicating temperature of the light source, and a light source driver which receives the current command value, adjusts amplitude of a pulse width modulation (PWM) signal, and controls a driving electric current of the light source according to the adjusted PWM signal.

REFERENCES:
patent: 6411046 (2002-06-01), Muthu
patent: 6441558 (2002-08-01), Muthu et al.
patent: 7067995 (2006-06-01), Gunter et al.
patent: 7262752 (2007-08-01), Weindorf
patent: 7391172 (2008-06-01), Ferguson et al.
patent: 2002/0190666 (2002-12-01), Sakamoto et al.
patent: 2005/0073268 (2005-04-01), Schrodinger et al.
patent: 2005/0162099 (2005-07-01), Kemper
patent: 2006/0022616 (2006-02-01), Furukawa et al.
patent: 2006/0220571 (2006-10-01), Howell et al.
patent: 2006/0229511 (2006-10-01), Fein et al.
patent: 2007/0040512 (2007-02-01), Jungwirth et al.
patent: 2007/0132398 (2007-06-01), Ferguson et al.
patent: 2008/0191631 (2008-08-01), Archenhold et al.
patent: 2008/0215279 (2008-09-01), Salsbury et al.
Office Action from the State Intellectual Property Office of P.R China dated Apr. 13, 2010, issued in counterpart Chinese Application No. 200710102254.4.

Affiliated with

Also associated with

Rating

LED lighting device and method for controlling the same... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LED lighting device and method for controlling the same..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LED lighting device and method for controlling the same... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4241900