Bearing assembly for a lithography system, and lithography system

A bearing arrangement, comprising:

• an optical element;
• a base;
• and
• a bearing device configured to movably mount the optical element relative to the base,
• wherein:
• the bearing device comprises a torsion-decoupling element configured to reduce a transmission of torsional moments between the optical element;
• the torsion-decoupling element comprises first and second leaf springs;
• each of the first and second leaf springs has mutually opposing narrow sides;
• the torsional moments act about an axis that is perpendicular to the narrow sides;
• the first and second leaf springs are at an angle to each other;
• the first and second leaf springs are mechanically connected in parallel;
• the first and second leaf springs are coupled to each other so that a force flow through the torsion-decoupling element simultaneously flows through the first and second leaf springs;
• the torsion-decoupling element comprises first and second hollow cylindrical portions;
• a first tongue is defined at the first hollow cylindrical portion;
• a second tongue is defined at the second hollow cylindrical portion;
• the tongue protrudes into the second hollow cylindrical portion;
• and
• the first tongue is connected to the second hollow cylindrical portion via the first and second leaf springs.