Patent ID: 11947271
Assignee: KULICKE & SOFFA LITEQ B.V.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 2:
3. A lithographic system for projecting an image onto a workpiece using radiation, the lithographic system comprising:
a support structure for supporting a workpiece;
a radiation source for providing radiation to project an image on the workpiece;
a reticle positioned between the radiation source and the workpiece; and
a mask being positioned within 100 mm of the reticle along a z-axis of the lithographic system, the mask being configured to block radiation from the radiation source, wherein the mask includes a body portion and a radiation absorbing coating applied to at least a portion of an external surface of the body portion, wherein the radiation absorbing coating is an inorganic black coating, the mask defining an illumination area of the image to be projected onto the workpiece using a pattern of the reticle and radiation from the radiation source, the illumination area defined by the mask being variable.