发明授权
US07154585B2 Projection optical system, exposure apparatus, and device production method
有权
投影光学系统,曝光装置和装置制作方法
- 专利标题: Projection optical system, exposure apparatus, and device production method
- 专利标题(中): 投影光学系统,曝光装置和装置制作方法
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申请号: US10611966申请日: 2003-07-03
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公开(公告)号: US07154585B2公开(公告)日: 2006-12-26
- 发明人: Koji Shigematsu , Youhei Fujishima , Yasuhiro Omura , Toshiro Ishiyama
- 申请人: Koji Shigematsu , Youhei Fujishima , Yasuhiro Omura , Toshiro Ishiyama
- 申请人地址: JP Tokyo
- 专利权人: Nikon Corporation
- 当前专利权人: Nikon Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2002-196212 20020704; JP2003-003869 20030110
- 主分类号: G03B27/54
- IPC分类号: G03B27/54 ; G02B9/00
摘要:
Provided is a projection optical system for forming an image of a pattern of a first object (R) on a second object (W). The projection optical system is made of an optical material having a refractive index of not more than 1.6 and is substantially telecentric both on the first object side and on the second object side. The projection optical system satisfies the condition of (λ×L)/(NA×Y02)
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