Optical: systems and elements – Lens – With support
Reexamination Certificate
2005-06-18
2010-06-15
Schwartz, Jordan M. (Department: 2873)
Optical: systems and elements
Lens
With support
C359S819000
Reexamination Certificate
active
07738193
ABSTRACT:
The invention relates to a positioning unit for an optical element in a microlithographic projection exposure installation. Said unit comprises a first connection region (A,22) for connecting to the optical elements, and a second connection region (B,20) for connecting to an object in the vicinity of the optical elements. At least two levers are connected to the second connection region by means of the respective lever bearing thereof, and the respective load arm thereof is connected to the first connection region by an articulation by means of an intermediate element (31, 33, 36) applied to said articulations. Regulating devices (28, 29) or actuators are arranged on the respective power arms of the levers. In a first position, the first connection region and the second connection region are arranged in relation to each other in such a way that the lever bearings of at least two levers and the articulations associated with said levers have approximately parallel rotational axes that are located approximately in a plane in the first position.
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Kugler Jens
Weber Ulrich
Carl Zeiss SMT AG
Jones James C
Schwartz Jordan M.
Wells St. John P.S.
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