Invention Grant
- Patent Title: Discharge lamp lighting device and projector
- Patent Title (中): 放电灯照明装置和投影机
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Application No.: US12379296Application Date: 2009-02-18
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Publication No.: US07923940B2Publication Date: 2011-04-12
- 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: Oliff & Berridge, PLC
- Priority: JP2006-033490 20060210
- Main IPC: H05B37/02
- IPC: H05B37/02
Abstract:
A method of generating a driving current supplied to a high pressure discharge lamp, including outputting a DC current, converting the DC current to an AC current having a predetermined frequency, generating a reference pulse which is asynchronous with the AC current, and superposing the first pulse and the second pulse to the AC current for producing the driving current.
Public/Granted literature
- US20090160348A1 Discharge lamp lighting device and projector Public/Granted day:2009-06-25
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