Title:
APPARATUS AND METHOD OF LUMINANCE CONTROL FLUORESCENT LIGTING AND FLUORESCENT LAMP DIMMING
Document Type and Number:
Japanese Patent JPH01137599
Kind Code:
A
Abstract:
PURPOSE: To provide easily an expanded luminance range and a relatively fixed light color output by utilizing an electric current regulator in combination with a fluorescent lamp to adjust the electric current of the lamp and vary directly the luminance of the lamp tube. CONSTITUTION: A back light lighting system 100 of a flat-panel display device comprises an electric current regulator 110 and an electric current inverter 120 connected thereto and the latter is connected to a fluorescent lamp 130. The electric current inverter 120 supplies AC from DC outputted by the electric current regulator 110 to the fluorescent lamp. That is, the lamp electric current is regulated to vary directly the luminance of the lamp tube. Thus, a flat-panel display device of a fixed light color output is obtained within a designed expanded dimming range.
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Inventors:
UESURII JII RANYON
Application Number:
JP26304888A
Publication Date:
May 30, 1989
Filing Date:
October 20, 1988
Export Citation:
Assignee:
ROCKWELL INTERNATIONAL CORP
International Classes:
H05B41/36; H05B41/295; H05B41/392; (IPC1-7): H05B41/36; H05B41/392
Attorney, Agent or Firm:
Akira Asamura (3 outside)
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