Title:
放電灯の駆動方法および駆動装置、光源装置並びに画像表示装置
Document Type and Number:
Japanese Patent JP4530062
Kind Code:
B2
Abstract:
A driving method for a discharge lamp that lights by performing discharge between two electrodes while alternately switching a polarity of a voltage applied between the two electrodes includes: modulating an anode duty ratio, which is a ratio of an anode time for which one of the electrodes operates as an anode in one period of the polarity switching, within a predetermined range; and changing the predetermined range to make a maximum value of the modulated anode duty ratio higher than a maximum value of an initial anode duty ratio of the discharge lamp when a predetermined condition is satisfied.
Inventors:
Terashima Tetsuo
Kentaro Yamauchi
Takezawa samurai
Kazuo Okawa
Kentaro Yamauchi
Takezawa samurai
Kazuo Okawa
Application Number:
JP2008039910A
Publication Date:
August 25, 2010
Filing Date:
February 21, 2008
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
H05B41/24
Domestic Patent References:
| JP2004525496A | ||||
| JP2004039563A | ||||
| JP57168499A | ||||
| JP2006032017A |
Foreign References:
| WO2004066687A1 |
Attorney, Agent or Firm:
Meisei International Patent Office