Invention Grant
US09392676B2 Discharge lamp lighting device, projector, and method for driving discharge lamp
有权
放电灯照明装置，投影仪及驱动放电灯的方法
- Patent Title: Discharge lamp lighting device, projector, and method for driving discharge lamp
- Patent Title (中): 放电灯照明装置，投影仪及驱动放电灯的方法
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Application No.: US12869964Application Date: 2010-08-27
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Publication No.: US09392676B2Publication Date: 2016-07-12
- Inventor: Kazuo Okawa
- Applicant: Kazuo Okawa
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: ALG Intellectual Property, LLC
- Priority: JP2009-243208 20091022
- Main IPC: H05B41/288
- IPC: H05B41/288 ; H05B41/292
Abstract:
A discharge lamp lighting device includes: a DC power supply unit that outputs a DC current; an inverter that sequentially generates, from the DC current output from the DC power supply unit, a current pulse whose current direction alternately changes to supply the current pulse to a discharge lamp; and a control unit that controls operations of the DC power supply unit and the inverter to adjust a waveform of the current pulse to be supplied to the discharge lamp, wherein the control unit changes a pulse width of the current pulse every pulse.
Public/Granted literature
- US20110095696A1 DISCHARGE LAMP LIGHTING DEVICE, PROJECTOR, AND METHOD FOR DRIVING DISCHARGE LAMP Public/Granted day:2011-04-28
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