Illumination system for a microlithographic projection exposure apparatus
First Claim
Patent Images
1. An optical system, comprising:
- an optical integrator configured so that, when light is incident thereon, the optical integrator produces secondary light sources;
a first scattering structure arranged, along a light propagation direction of the system, in front of the optical integrator, the first scattering structure comprising first subelements configured to introduces a divergence of incident light only in one direction; and
a second scattering structure arranged, along a light propagation direction of the system, behind the optical integrator, the second scattering structure comprising second subelements configured to introduce a divergence of incident light in two directions,wherein the system is a microlithographic illumination system.
2 Assignments
0 Petitions
Accused Products
Abstract
Illumination systems for microlithographic projection exposure apparatus, as well as related systems, components and methods are disclosed. In some embodiments, an illumination system includes one or more scattering structures and an optical integrator that produces a plurality of secondary light sources.
27 Citations
22 Claims
-
1. An optical system, comprising:
-
an optical integrator configured so that, when light is incident thereon, the optical integrator produces secondary light sources; a first scattering structure arranged, along a light propagation direction of the system, in front of the optical integrator, the first scattering structure comprising first subelements configured to introduces a divergence of incident light only in one direction; and a second scattering structure arranged, along a light propagation direction of the system, behind the optical integrator, the second scattering structure comprising second subelements configured to introduce a divergence of incident light in two directions, wherein the system is a microlithographic illumination system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. An optical system, comprising:
-
an optical integrator comprising a plurality of focusing optical subelements; a first scattering structure arranged, along a light propagation direction of the system, in front of the optical integrator, wherein the first scattering structure is configured to increase a geometrical optical flux only in one direction; and a second scattering structure arranged, along a light propagation direction of the system, behind the optical integrator wherein the second scattering structure is configured to increase the geometrical optical flux in two directions, wherein the system is a microlithographic illumination system. - View Dependent Claims (19, 20, 21)
-
-
22. An optical system, comprising:
-
a device comprising a plurality of optical subelements arranged at least substantially in a plane; a first scattering structure arranged, along a light propagation direction of the system, in front of the device, the first scattering structure configured to scatter only in one direction; and a second scattering structure arranged, along a light propagation direction of the system, behind the device, the second scattering structure configured to scatter in two directions; wherein the system is a microlithographic illumination system.
-
Specification