Patent ID: 11953835
Assignee: ASML NETHERLANDS B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 13:
14. A system for projecting a patterned radiation beam onto a substrate, the system comprising:
an array of individually controllable elements, the array configured to impart a radiation beam so as to generate a patterned radiation beam by tilting the individually controllable elements between different positions about a tilting axis;
a radiation beam modulator configured to modulate a radiation beam according to a predetermined profile over time, the profile comprising a plurality of different intensity levels of the radiation beam, wherein the array of individually controllable elements is configured to impart the modulated radiation beam so as to generate a patterned modulated radiation beam by tilting the individually controllable elements between different positions about a tilting axis;
a stage apparatus configured to hold a substrate and configured to scan a substrate across the patterned modulated radiation beam in a scanning direction so as to expose a portion of the substrate to the patterned modulated radiation beam; and
a control unit configured to determine, based on a required dose of radiation for the portion of the substrate and on the predetermined profile over time, a tilting sequence of an element of the array of controllable elements, so as to expose the portion of the substrate to a selection of the plurality of different intensity levels.