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1. 发明申请

US20110286105A1 ENHANCED VARIABLE POWER ZOOM LENS 有权
标题翻译：增强型变焦镜头
公开(公告)号：US20110286105A1
公开(公告)日：2011-11-24
申请号：US13112101
申请日：2011-05-20
申请人： Hisayukui YAMANAKA , Makoto Kanai , Masafumi Sueyoshi , Masaharu Hosoi
发明人： Hisayukui YAMANAKA , Makoto Kanai , Masafumi Sueyoshi , Masaharu Hosoi
IPC分类号： G02B15/14
CPC分类号： G02B15/173
摘要： The present invention is directed to provide an enhanced variable power zoom lens that is lightweight as a whole, and especially, has its focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and that has its anti-vibration lens optics reduced in both diameter and weight so as to relieve of a load on an anti-vibration drive system and downsize the same. The enhanced variable power zoom lens is adapted to have the foremost or first lens group of positive refractivity, the second lens group of negative refractivity, the third lens group of positive refractivity, the fourth lens group of negative refractivity, and the fifth lens group arranged in this sequence from a position closer to the object where a distance between each pair of the adjacent lens groups is varied during zooming from the wide-angle end to the telephoto end, each lens group comes closer to the object at the telephoto end than at the wide-angle end, the third lens group and the fourth lens group separating the farthest apart from each other at the intermediate zooming range, and the fourth lens group is moved closer to the image plane for shifting from infinity focusing to proximity focusing.
摘要翻译：本发明旨在提供一种整体轻量化的增强型可变功率变焦透镜，特别是其聚焦透镜光学元件的重量减轻以减轻聚焦驱动系统上的负载，振动透镜光学元件的直径和重量均减小，以减轻抗振动驱动系统的负载并减小其尺寸。增强型可变焦度变焦透镜适于具有正折射率的第一或第一透镜组，负折射率的第二透镜组，正折射率的第三透镜组，负折射率的第四透镜组和布置的第五透镜组在从广角端到望远端的变焦期间，从近距离物体的每一对相邻透镜组之间的距离变化的位置，每个透镜组在远摄端更靠近物体广角端，第三透镜组和第四透镜组在中间变焦范围内彼此分离最远，并且第四透镜组移动到更靠近图像平面以从无限远聚焦移动到近距离聚焦。

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