摘要:
A catadioptric projection objective has a first objective part, defining a first part of the optical axis and imaging an object field to form a first real intermediate image. It also has a second, catadioptric objective part forming a second real intermediate image using the radiation from the first objective part. The second objective part has a concave mirror and defines a second part of the optical axis. A third objective part images the second real intermediate image into the image plane and defines a third part of the optical axis. Folding mirrors deflect the radiation from the object plane towards the concave mirror; and deflect the radiation from the concave mirror towards the image plane. The first part of the optical axis defined by the first objective part is laterally offset from and aligned parallel with the third part of the optical axis.
摘要:
A mirror (1a; 1a′; 1b; 1b′; 1c; 1c′) for the EUV wavelength range and having a substrate (S) and a layer arrangement, wherein the layer arrangement includes at least one surface layer system (P′″) consisting of a periodic sequence of at least two periods (P3) of individual layers, wherein the periods (P3) include two individual layers composed of different materials for a high refractive index layer (H′″) and a low refractive index layer (L′″), wherein the layer arrangement includes at least one surface protecting layer (SPL, Lp) or at least one surface protecting layer system (SPLS) having a thickness of greater than 20 nm, and preferably greater than 50 nm.
摘要:
An anamorphic objective is provided for imaging an object onto an image acquisition unit. The anamorphic objective has at least one first plane of symmetry and at least one second plane of symmetry. The first plane of symmetry and the second plane of symmetry are oriented perpendicular to one another. The first plane of symmetry and the second plane of symmetry intersect and have a straight line of intersection (intersection line). A first objective section followed by a second objective section are arranged. A diaphragm is arranged between the first objective section and the second objective section. A first anamorphic optical element is arranged in the first objective section. A second anamorphic optical element is arranged in the second objective section. The anamorphic objective fulfills specified conditions and is suitable for generating a stigmatic imaging of the object on the image acquisition unit.
摘要:
A catadioptric projection objective has a first objective part, defining a first part of the optical axis and imaging an object field to form a first real intermediate image. It also has a second, catadioptric objective part forming a second real intermediate image using the radiation from the first objective part. The second objective part has a concave mirror and defines a second part of the optical axis. A third objective part images the second real intermediate image into the image plane and defines a third part of the optical axis. Folding mirrors deflect the radiation from the object plane towards the concave mirror; and deflect the radiation from the concave mirror towards the image plane. The first part of the optical axis defined by the first objective part is laterally offset from and aligned parallel with the third part of the optical axis.
摘要:
Imaging optics includes a first mirror in the imaging beam path after the object field, a last mirror in the imaging beam path before the image field, and a fourth to last mirror in the imaging beam path before the image field. In an unfolded imaging beam path between the object plane and the image plane, an impingement point of the chief ray on a used region of each of the plurality of mirrors has a mirror spacing from the image plane. The mirror spacing of the first mirror is greater than the mirror spacing of the last mirror. The mirror spacing of the fourth to last mirror is greater than the mirror spacing of the first mirror. Chief rays that emanate from points of the object field that are spaced apart from another have a mutually diverging beam course, giving a negative back focus of the entrance pupil.
摘要:
A mirror for the EUV wavelength range (1) having a layer arrangement (P) applied on a substrate (S), the layer arrangement having a periodic sequence of individual layers, where the periodic sequence has at least two individual layers—forming a period—composed respectively of silicon (Si) and ruthenium (Ru). Also disclosed are a projection objective for microlithography (2) including such a mirror, and a projection exposure apparatus for microlithography having such a projection objective (2).
摘要:
A catadioptric projection objective for projecting a pattern arranged in the object plane of the projection objective into the image plane of the projection objective, having: a first objective part for projecting an object field lying in the object plane into a first real intermediate image; a second objective part for generating a second real intermediate image with the radiation coming from the first objective part; a third objective part for generating a third real intermediate image with the radiation coming from the second objective part; and a fourth objective part for projecting the third real intermediate image into the image plane.
摘要:
An optical system of a microlithographic projection exposure apparatus contains a module, which can be fitted in the optical system and removed from it as a unit. The module contains a cavity which can be completely filled with a liquid and hermetically sealed, and a concavely curved optical surface which bounds the cavity at the top during operation of the projection exposure apparatus. This makes it possible to fill the module outside the optical system. The module can be tilted there so that no air bubble, which prevents complete filling, can form below the concavely curved optical surface.
摘要:
The disclosure relates a projection objective of a microlithographic projection exposure apparatus, as well as a related microlithographic projection exposure apparatus and method. The projection objective can include a lens of a cubically crystalline material whose crystal orientation is oriented at an angle of at most 15° relative to the optical axis of the projection objective. The projection objective can also include a polarization correction element which has at least two subelements of birefringent, optically uniaxial material and having at least one respective aspheric surface. During use of the projection objective, the polarization correction element at least partially compensates for an intrinsic birefringence of the lens.
摘要:
A microlithographic projection exposure apparatus contains an illumination system (12) for generating projection light (13) and a projection lens (20; 220; 320; 420; 520; 620; 720; 820; 920; 1020; 1120) with which a reticle (24) that is capable of being arranged in an object plane (22) of the projection lens can be imaged onto a light-sensitive layer (26) that is capable of being arranged in an image plane (28) of the projection lens. The projection lens is designed for immersion mode, in which a final lens element (L5; L205; L605; L705; L805; L905; L1005; L1105) of the projection lens on the image side is immersed in an immersion liquid (34; 334a; 434a; 534a). A terminating element (44; 244; 444; 544; 644; 744; 844; 944; 1044; 1144) that is transparent in respect of the projection light (13) is fastened between the final lens element on the image side and the light-sensitive layer.