发明名称 |
Projection optical apparatus, exposure method and apparatus, photomask, and device and photomask manufacturing method |
摘要 |
When forming a magnified image of a mask pattern on an object with a plurality of projection optical systems, projected images of the projection optical systems are formed to be accurately continuous to enable satisfactory pattern transfer. A first projection optical system directs light beam from point a on a mask to point A on a plate and forms a magnified image of the mask on the plate. A second projection optical system directs light beam from point b on the mask to point on the plate and forms a magnified image of the mask on the plate. A first line segment linking point A and point a', which orthogonally projects point a on the plate, and a second line segment linking point B and point b', which orthogonally projects point b on the plate PT, overlap each other as viewed in a non-scanning direction.
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申请公布号 |
US2008165334(A1) |
申请公布日期 |
2008.07.10 |
申请号 |
US20070000074 |
申请日期 |
2007.12.07 |
申请人 |
NIKON CORPORATION |
发明人 |
KUMAZAWA MASATO;HATADA HITOSHI |
分类号 |
G03B27/42;G03B27/54;G03F1/00 |
主分类号 |
G03B27/42 |
代理机构 |
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代理人 |
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地址 |
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