| 摘要 |
An optical element for an exposure apparatus is disclosed, where the exposure apparatus has a projection optical system configured to project a pattern of an original plate illuminated with extreme ultraviolet light from a light source onto a substrate and exposes the substrate to the light via the original plate and the projection optical system. The optical element is to be placed in one of a first path of the light located in a side of the light source with respect to the original plate and a second path of the light located in a side of the substrate with respect to the original plate. The element includes a film configured to transmit the extreme ultraviolet light, and a shield placed on the film and configured to shield part of said film from the extreme ultraviolet light.
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