发明授权
US07061699B2 Projection lens, producing method of projection lens and projector having projection lens
有权
投影镜头，具有投影镜头的投影镜头和投影机的制造方法
- 专利标题： Projection lens, producing method of projection lens and projector having projection lens
- 专利标题（中）： 投影镜头，具有投影镜头的投影镜头和投影机的制造方法
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申请号： US10396377申请日： 2003-03-26
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公开(公告)号： US07061699B2公开(公告)日： 2006-06-13
- 发明人: Nobuo Watanabe , Shuji Narimatsu , Tomonobu Machida , Shunji Umemura , Shohei Fujisawa
- 申请人： Nobuo Watanabe , Shuji Narimatsu , Tomonobu Machida , Shunji Umemura , Shohei Fujisawa
- 申请人地址： JP Tokyo
- 专利权人： Seiko Epson Corporation
- 当前专利权人： Seiko Epson Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oliff & Berridge, PLC
- 优先权： JP2002-092790 20020328; JP2002-310724 20021025
- 主分类号： G02B7/02
- IPC分类号： G02B7/02
摘要：
A projection lens (46) comprises: a cylindrical exterior case (621) having a lens-shifting through-hole (625) on a side thereof and an inner circumferential step or inner flange (623); a lens (610) of which outer periphery (611) on a first side is abutted to the inner circumferential step or inner flange (623); a flexible or elastic spacer (660) abutted to an outer periphery (612) of a second side of the lens (610); and a retainer (670) holding the spacer (660), where the lens (610) is fixed on the exterior case (621).
公开/授权文献
信息查询
IPC分类:
| G | 物理 |
| G02 | 光学 |
| G02B | 光学元件、系统或仪器 |
| G02B7/00 | 光学元件的安装、调整装置或不漏光连接 |
| G02B7/02 | .用于透镜 |
