基本信息:
- 专利标题： Soft-focus lens system
- 申请号：US10126695 申请日：2002-04-23
- 公开(公告)号：US20030053220A1 公开(公告)日：2003-03-20
- 发明人： Takayuki Sensui
- 申请人： ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
- 申请人地址： JP Tokyo
- 专利权人： ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
- 当前专利权人： ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
- 当前专利权人地址： JP Tokyo
- 优先权： JP2001-125301 20010424; JP2001-125302 20010424; JP2001-216409 20010717
- 主分类号： G02B015/14
- IPC分类号： G02B015/14
摘要：
A soft-focus lens system includes a master lens group and a soft-focus lens group. The soft-focus lens group includes a positive sub lens group and a negative sub lens group. The positive sub lens group and the negative sub lens group are moved to set the normal photographing mode or the soft-focus photographing mode. Each of the sub lens groups is arranged to move with respect to the master lens group and the other of the sub lens groups so that the focal point and the focal length are not substantially varied before and after the switching of the soft-focus photographing mode to the normal photographing mode or vice versa.
公开/授权文献:
- US06552857B2 Soft-focus lens system 公开/授权日：2003-04-22