基本信息:
- 专利标题： 廣角透鏡及影像擷取設備 WIDE-ANGLE LENS AND IMAGE CAPTURING APPARATUS
- 专利标题（英）：Wide-angle lens and image capturing apparatus
- 专利标题（中）：广角透镜及影像截取设备 WIDE-ANGLE LENS AND IMAGE CAPTURING APPARATUS
- 申请号：TW097111466 申请日：2008-03-28
- 公开(公告)号：TW200912366A 公开(公告)日：2009-03-16
- 发明人： 吉田勇人 YOSHIDA, HAYATO , 高橋靖 TAKAHASHI, YASUSHI , 茂庭直樹 MONIWA, NAOKI , 川崎俊之 KAWASAKI, TOSHIYUKI , 笠原亮介 KASAHARA, RYOSUKE , 安部一成 ABE, ISSEI , 濱野由紀子 HAMANO, YUKIKO
- 申请人： 理光股份有限公司 RICOH COMPANY, LTD.
- 申请人地址： 日本
- 专利权人： 理光股份有限公司 RICOH COMPANY, LTD.
- 当前专利权人： 理光股份有限公司 RICOH COMPANY, LTD.
- 当前专利权人地址： 日本
- 代理人： 林志剛
- 优先权： 日本 2007-093188 20070330 日本 2008-035263 20080215
- 主分类号： G02B
- IPC分类号： G02B
A wide-angle lens is disclosed that includes a front lens group and a rear lens group that are arranged in order from an object side to an image side with an aperture being arranged between the front lens group and the rear lens group. The front lens group includes at least two lenses arranged toward the object side that have positive powers, and at least one lens arranged toward the image side that has a negative power. The rear lens group includes at least one lens having a positive power. One of the lenses of the front lens group arranged second in order from the object side has a lens face that is arranged into an aspheric surface. The front lens group, the aperture, and the rear lens group make up an image forming system having an angle of view greater than 180 degrees.
公开/授权文献:
- TWI416164B 廣角透鏡及影像擷取設備 公开/授权日：2013-11-21