Illumination system having at least two light sources, and a...

Details Illumination system having at least two light sources, and a... Illumination system having at least two light sources, and a...

2007-10-30

2007-10-30

Owens, Douglas W. (Department: 2821)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

C315S307000, C315S312000

Reexamination Certificate

active

11218624

ABSTRACT:
An illumination system has at least two light sources of which at least one light source includes an LED, and a driver device designed to operate at least the one LED with a DC signal; a sensor device for determining at least one feature of the light output; an actual value storage device connected to the sensor device for storing an actual value of the feature; a setpoint selection device for storing a setpoint of the feature; and a control device connected on the input side to the actual value storage device for of transmitting the actual value, and to the setpoint selection device for transmitting the setpoint, and which provides the driver device with a control signal that changes a characteristic of the DC signal used for driving the LED such that the actual value approaches the setpoint.

REFERENCES:
patent: 3898643 (1975-08-01), Ettlinger
patent: 6175201 (2001-01-01), Sid
patent: 6175771 (2001-01-01), Hunt et al.
patent: 6728393 (2004-04-01), Stam et al.
patent: 2007/0029951 (2007-02-01), Lamesch

Affiliated with

Also associated with

Rating

Illumination system having at least two light sources, and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Illumination system having at least two light sources, and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illumination system having at least two light sources, and a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3903385