Title:
プロジェクターおよびプロジェクターシステム
Document Type and Number:
Japanese Patent JP5585293
Kind Code:
B2
Abstract:
A projector includes a discharge lamp, a discharge lamp driver that supplies the discharge lamp with a current, a voltage detector that detects a drive voltage for driving the discharge lamp, and a controller that controls the discharge lamp driver. The controller carries out a first control process in which the discharge lamp driver is so controlled that an absolute magnitude of the drive current in a first period is smaller than that in a second period and that an AC current is supplied to the discharge lamp in a second period. The first control process includes a first electric power control process in which first average drive electric power is determined based on the voltage detected by the voltage detector and a current is supplied to the discharge lamp in such a way that average drive electric power is set at the first average drive electric power.
Inventors:
Takashi Sato
Tetsuo Terashima
Tetsuo Terashima
Application Number:
JP2010183711A
Publication Date:
September 10, 2014
Filing Date:
August 19, 2010
Export Citation:
Assignee:
Seiko Epson, Inc.
International Classes:
G03B35/16; G03B21/00; G03B21/14; G09G3/20; G09G3/34; G09G3/36; H04N13/363; H05B41/24
Attorney, Agent or Firm:
Masaaki Kamiyanagi
Osamu Suzawa
Kazuhiko Miyasaka
Osamu Suzawa
Kazuhiko Miyasaka