发明授权
- 专利标题: Projection lens system and projector
- 专利标题(中): 投影镜头系统和投影机
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申请号: US13882472申请日: 2011-10-25
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公开(公告)号: US08976457B2公开(公告)日: 2015-03-10
- 发明人: Kazuhiko Inoue
- 申请人: Kazuhiko Inoue
- 申请人地址: JP Tokyo
- 专利权人: Konica Minolta, Inc.
- 当前专利权人: Konica Minolta, Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Cozen O'Connor
- 优先权: JP2010-242288 20101028
- 国际申请: PCT/JP2011/074505 WO 20111025
- 国际公布: WO2012/057110 WO 20120503
- 主分类号: G02B15/14
- IPC分类号: G02B15/14 ; G02B13/16 ; G02B15/177
摘要:
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
公开/授权文献
- US20130215519A1 Projection Lens and Projector 公开/授权日:2013-08-22
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