Entladungslampenansteuerungsvorrichtung, Lichtquellenvorrichtung, Projektor und Entladungslampenansteuerungsverfahren

Details

Veröffentlichungs-Nr.

EP3089557

Aktenzeichen

EP16167408

Anmeldetag

28. April 2016

Veröffentlichung

27. Februar 2019

Erteilung

27. Februar 2019

Rechtsraum

EP

IPC

G03B21/00G03B21/20H04N9/31H05B41/288H05B41/38

Abstract

A discharge lamp driving device includes a discharge lamp driving unit configured to supply a driving current to a discharge lamp provided with electrodes, and a controller configured to control the discharge lamp driving unit, in which the controller is configured to control the discharge lamp driving unit to provide a hybrid period in which a first period for supplying an AC current with a first frequency to the discharge lamp and a second period for supplying a DC current to the discharge lamp are alternately repeated, a fourth period in which an AC current with a second frequency lower than the first frequency is supplied, and a fifth period alternately including a third DC period in which a DC current is supplied and a fourth DC period in which a DC current with a polarity opposite to a polarity of the DC current in the third DC period is supplied.

Anmelder

Firma

Seiko Epson Corporation

Land

🇯🇵 Japan

Fachgebiete