Title:
マイクロリソグラフィ投影露光装置の照明システム
Document Type and Number:
Japanese Patent JP5561508
Kind Code:
B2
Abstract:
The disclosure relates an illumination system that has an optical axis and a polarization-influencing arrangement. The arrangement can include a first wedge plate with a first wedge direction which extends perpendicularly to the optical axis in the direction of a maximum change in thickness of the first wedge plate, and a second wedge plate with a second wedge direction which extends perpendicularly to the optical axis in the direction of a maximum change in thickness of the second wedge plate. The first wedge plate and the second wedge plate can be arranged rotatably about the optical axis. The first wedge plate and the second wedge plate can be respectively made from birefringent crystal material having a respective optical crystal axis. In a starting position of the arrangement in which the first wedge direction and the second wedge direction extend in mutually parallel relationship, the optical crystal axis of the first wedge plate and the optical crystal axis of the second wedge plate can be oriented at an angle of 45°±3° relative to each other. One of the two crystal axes can be oriented perpendicularly or parallel to the preferred polarization direction of the light impinging on the arrangement.
Inventors:
Damian Fiorca
Application Number:
JP2008109919A
Publication Date:
July 30, 2014
Filing Date:
April 21, 2008
Export Citation:
Assignee:
Carl Zeiss SGM Gaehha
International Classes:
H01L21/027; G02B19/00; G03F7/20
Domestic Patent References:
| JP2005333001A | ||||
| JP2003090978A | ||||
| JP2005156592A | ||||
| JP2002520810A |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda