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1. 发明公开

EP0750205A1 Objective lens system 失效
标题翻译： Objektivlinsensystem
公开(公告)号：EP0750205A1
公开(公告)日：1996-12-27
申请号：EP96108953.9
申请日：1996-06-04
申请人： PANAVISION INTERNATIONAL, L.P.
发明人： Neil, Iain A.
IPC分类号： G02B13/02 , G02B3/12 , G02B9/64
CPC分类号： G02B7/028 , G02B3/12 , G02B13/02
摘要： A high performance, large aperture, long focal length visible waveband ob- jective lens system (60) comprises a telephoto objective lens group (48) spaced from a focusing lens group (49) and an auxiliary lens group (54), all supported in a support assembly (43) of fixed length. The lens groups are aligned on a common optical axis (40). The telephoto objective lens group (48) is stationary and comprises a positively powered lens element (A) and a negatively powered lens sub-group (50) containing a quintuplet lens group (51) with lens elements (B, C, D, E, F) and a lens element (G). The quintuplet lens group includes two lens elements (C and E) of liquid materials which exhibit highly abnormal partial dispersions and one solid glass lens element (F) which exhibits slightly abnormal partial dispersion. In addition, the liquid materials of lens elements (C) and (E) exhibit very large changes in refractive index with temperature and the material of lens element (F) exhibits a compensa- ting large change in refractive index with temperature. The remaining lens ele- ments of the system are common optical glass and exhibit substantially normal par- tial dispersions. The focusing lens group (49) contains a positively powered first lens group (52) and a negatively powered second lens group (53) which are inde- pendently movable along the optical axis (40) to provide continuous focusing for object to image magnifications from infinity to less than 3:1. The configuration and material selection of the lens system (60) results in a high performance, compact, low in weight, relatively inexpensive, well corrected for chromatic aberration and substantially passively athermal objective lens system.
摘要翻译：一种高性能，大光圈，长焦距可见波段物镜透镜系统（60）包括与聚焦透镜组（49）和辅助透镜组（54）间隔开的远摄物镜组（48）固定长度的支撑组件（43）。透镜组在公共光轴（40）上对准。长焦物镜组（48）是静止的并且包括有功功率的透镜元件（A）和负光透镜子组（50），其包含具有透镜元件（B，C，D，E）的五重透镜组（51），F）和透镜元件（G）。五重透镜组包括表现出非常异常的部分分散体的液体材料的两个透镜元件（C和E）和一个表现出略微异常的部分色散的固体玻璃透镜元件（F）。此外，透镜元件（C）和（E）的液体材料的折射率随温度的变化非常大，并且透镜元件（F）的材料表现出随温度的折射率的补偿性大的变化。系统的剩余镜头元件是普通的光学玻璃，表现出基本上正常的分散体。聚焦透镜组（49）包含有功功率的第一透镜组（52）和负功率的第二透镜组（53），它们沿着光轴（40）独立地移动，以提供连续的聚焦，无限小于3：1。透镜系统（60）的配置和材料选择导致高色彩，紧凑，重量轻，相对便宜，对于色差和基本上被动地无热物镜系统的良好校正。

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