摘要:
There is provided a microlithography projection objective for short wavelengths, with an entrance pupil and an exit pupil for imaging an object field in an image field, which represents a segment of a ring field, in which the segment has an axis of symmetry and an extension perpendicular to the axis of symmetry and the extension is at least 20 mm. The objective comprises a first (S1), a second (S2), a third (S3), a fourth (S4), a fifth (S5) and a sixth mirror (S6) in centered arrangement relative to an optical axis. Each of these mirrors have an off-axis segment, in which the light beams traveling through the projection objective impinge. The diameter of the off-axis segment of the first, second, third, fourth, fifth and sixth mirrors as a function of the numerical aperture NA of the objective at the exit pupil is ≦1200 mm * NA.
摘要:
A reduction objective, a projection exposure apparatus with a reduction objective, and a method of use thereof are disclosed. The reduction objective has a first set of multilayer mirrors in centered arrangement with respect to a first optical axis, a second set of multilayer mirrors in centered arrangement with respect to a second optical axis, and an additional mirror disposed at grazing incidence, such that said additional mirror defines an angle between the first optical axis and said second optical axis. The reduction objective has an imaging reduction scale of approximately 4× for use in soft X-ray, i.e., EUV and UV, annular field projection applications, such as lithography
摘要:
There is provided an EUV optical projection system. The system includes a first mirror, a second mirror, a third mirror, a fourth mirror, a fifth mirror, and a sixth mirror situated in an optical path from an object plane to an image plane, for imaging an object in said object plane into an image in said image plane. The image has a width W and a secant length SL, and the width W is greater than about 2 mm.
摘要:
An EUV optical projection system includes at least six reflecting surfaces for imaging an object (OB) on an image (IM). The system is preferably configured to form an intermediate image (IMI) along an optical path from the object (OB) to the image (IM) between a secondary mirror (M2) and a tertiary mirror (M3), such that a primary mirror (M1) and the secondary mirror (M2) form a first optical group (G1) and the tertiary mirror (M3), a fourth mirror (M4), a fifth mirror (M5) and a sixth mirror (M6) form a second optical group (G2). The system also preferably includes an aperture stop (APE) located along the optical path from the object (OB) to the image (IM) between the primary mirror (M1) and the secondary mirror (M2). The secondary mirror (M2) is preferably concave, and the tertiary mirror (M3) is preferably convex. Each of the six reflecting surfaces preferably receives a chief ray (CR) from a central field point at an incidence angle of less than substantially 15°. The system preferably has a numerical aperture greater than 0.18 at the image (IM). The system is preferably configured such that a chief ray (CR) converges toward the optical axis (OA) while propagating between the secondary mirror (M2) and the tertiary mirror (M3).
摘要:
There is provided a reflective X-ray microscope for examining an object in an object plane. The reflective X-ray microscope includes (a) a first subsystem, having a first mirror and a second mirror, disposed in a beam path from the object plane to the image plane, and (b) a second subsystem, having a third mirror, situated downstream of the first subsystem in the beam path. The object is illuminated with radiation having a wavelength
摘要:
An EUV optical projection system includes at least six reflecting surfaces for imaging an object (OB) on an image (IM). The system is preferably configured to form an intermediate image (IMI) along an optical path from the object (OB) to the image (IM) between a secondary mirror (M2) and a tertiary mirror (M3), such that a primary mirror (M1) and the secondary mirror (M2) form a first optical group (G1) and the tertiary mirror (M3), a fourth mirror (M4), a fifth mirror (M5) and a sixth mirror (M6) form a second optical group (G2). The system also preferably includes an aperture stop (APE) located along the optical path from the object (OB) to the image (IM) between the primary mirror (M1) and the secondary mirror (M2). The secondary mirror (M2) is preferably concave, and the tertiary mirror (M3) is preferably convex. Each of the six reflecting surfaces preferably receives a chief ray (CR) from a central field point at an incidence angle of less than substantially 15°. The system preferably has a numerical aperture greater than 0.18 at the image (IM). The system is preferably configured such that a chief ray (CR) converges toward the optical axis (OA) while propagating between the secondary mirror (M2) and the tertiary mirror (M3).
摘要:
An EUV optical projection system includes at least six mirrors (M1, M2, M3, M4, M5, M6) for imaging an object (OB) to an image (IM). At least one mirror pair is preferably configured as an at least phase compensating mirror pair. The system is preferably configured to form an intermediate image (IMI) along an optical path from the object (OB) to the image (IM) between a second mirror (M2) and a third mirror (M3), such that a first mirror (M1) and the second mirror (M2) form a first optical group (G1) and the third mirror (M3), a fourth mirror (M4), a fifth mirror (M5) and a sixth mirror (M6) form a second optical group (G1). The system also preferably includes an aperture stop (APE) located along the optical path from the object (OB) to the image (IM) between the first mirror (M1) and the second mirror (M2). The second mirror (M2) is preferably convex, and the third mirror (M3) is preferably concave. The system preferably forms an image (IM) with a numerical aperture greater than 0.18.
摘要:
An EUV optical projection system includes at least six reflecting surfaces for imaging an object (OB) on an image (IM). The system is preferably configured to form an intermediate image (IMI) along an optical path from the object (OB) to the image (IM) between a secondary mirror (M2) and a tertiary mirror (M3), such that a primary mirror (M1) and the secondary mirror (M2) form a first optical group (G1) and the tertiary mirror (M3), a fourth mirror (M4), a fifth mirror (M5) and a sixth mirror (M6) form a second optical group (G2). The system also preferably includes an aperture stop (APE) located along the optical path from the object (OB) to the image (IM) between the primary mirror (M1) and the secondary mirror (M2). The secondary mirror (M2) is preferably concave, and the tertiary mirror (M3) is preferably convex. Each of the six reflecting surfaces preferably receives a chief ray (CR) from a central field point at an incidence angle of less than substantially 15°. The system preferably has a numerical aperture greater than 0.18 at the image (IM). The system is preferably configured such that a chief ray (CR) converges toward the optical axis (OA) while propagating between the secondary mirror (M2) and the tertiary mirror (M3).
摘要:
A bundle-guiding optical collector collects an emission of a radiation source and forms a radiation bundle from the collected emission. A reflective surface of the collector is the first bundle-forming surface downstream of the radiation source. The reflective surface is formed such that it converts the radiation source into a family of images in a downstream plane. The family of images includes a plurality of radiation source images which are offset to each other in two dimensions (x, y) in a direction perpendicular to the beam direction of the transformed radiation bundle and are arranged relative to each other in a non-rotationally symmetric manner relative to the beam direction of the transformed radiation bundle. The transformed radiation bundle in the downstream plane has a non-rotationally symmetric bundle edge contour relative to the beam direction of the transformed radiation bundle. The result is a collector in which the radiation bundle shape generated by the collector. In other words, the illumination distribution generated by the collector in a defined manner in the plane downstream of the collector has a shape which is freely selectable to the greatest possible extent.
摘要:
The disclosure relates to methods for producing mirrors, in particular facet mirrors, and projection exposure apparatuses equipped with the mirrors.