Invention Grant
- Patent Title: Projection lens system and projector
- Patent Title (中): 投影镜头系统和投影机
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Application No.: US13882472Application Date: 2011-10-25
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Publication No.: US08976457B2Publication Date: 2015-03-10
- Inventor: Kazuhiko Inoue
- Applicant: Kazuhiko Inoue
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta, Inc.
- Current Assignee: Konica Minolta, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Cozen O'Connor
- Priority: JP2010-242288 20101028
- International Application: PCT/JP2011/074505 WO 20111025
- International Announcement: WO2012/057110 WO 20120503
- Main IPC: G02B15/14
- IPC: G02B15/14 ; G02B13/16 ; G02B15/177
Abstract:
An aperture stop is arranged on the reduction side of the most reduction-side lens element in a fourth group; during zooming from the tele-end to the wide-end through a middle position that fulfills conditional formula 0.99
Public/Granted literature
- US20130215519A1 Projection Lens and Projector Public/Granted day:2013-08-22
Information query
