Abstract:
A faceted mirror apparatus includes a support plate having a plurality of stepped reception bores into which are fitted the base portions of respective ones of a plurality of mirror facets having mirrored surfaces. An outer surface of each of the facets bears on an inner wall to provide a stable alignment of the optical axes of the mirrored surfaces such that the apparatus generates a beam of rays from impinging rays.
Abstract:
The invention relates to a lithographic apparatus that includes a system configured to condition a radiation beam or project a patterned radiation beam onto a target portion of a substrate. The system includes an optically active device configured to direct the radiation beam or the patterned radiation beam, respectively, and a support structure configured to support the optically active device. The apparatus further includes a gas supply for providing a background gas into the system. The radiation beam or patterned radiation beam react with the background gas to form a plasma that includes a plurality of ions. The support structure includes an element that includes a material that has a low sputtering yield, a high sputter threshold energy, or a high ion implantation yield, to reduce sputtering and the creation of sputtering products.
Abstract:
A medical ventilation device comprising a cannula having proximal and distal ends; an inflatable cuff adapted to be inflated to an inspiratory pressure, the cuff attached to and surrounding a portion of the cannula toward the distal end thereof; an inspiratory pressure inflation tube having first and second ends, the first end in communication with an interior of the inflatable cuff, the second end adapted to communicate with an inspiratory pressure source; and a pressure valve in communication with the inspiratory pressure inflation tube.
Abstract:
The invention relates to a method for preventing contamination of the surfaces of reflective optical elements for the soft X-ray and EUV wavelength range during their irradiation at operating wavelength in an evacuated closed system having a residual gas atmosphere, said elements comprising a cover layer consisting of at least one transition metal. According to said method a residual gas atmosphere is adjusted. The aim of the invention is to prevent a degradation of the surfaces by deposition of carbon and by surface oxidation. For this purpose, both a reducing gas or gas mixture and a gas or gas mixture containing oxygen atoms are introduced. In conjunction with the cover layer of the reflective optical element that consists of a transition metal a degradation of the surface is effectively prevented
Abstract:
There is provided a projection exposure system operable in a scanning mode along a scanning direction. The projection exposure system includes a collector that receives light having a wavelength ≦193 nm and illuminates a region in a plane. The plane is defined by a local coordinate system having a y-direction parallel to the scanning direction and an x-direction perpendicular to the scanning direction. The collector includes (a) a first mirror shell, (b) a second mirror shell within the first mirror shell, and (c) a fastening device for fastening the first and second mirror shells. The mirror shells are substantially rotational symmetric about a common rotational axis. The fastening device has a support spoke that extends in a radial direction of the mirror shells, and the support spoke, when projected into the plane, yields a projection that is non-parallel to the y-direction.
Abstract:
There is provided a collector unit for illumination systems with a wavelength of ≦193 nm, preferably ≦126 nm, and especially preferably in the region of EUV wavelengths. Rays of a beam bundle impinge on the collector unit, and the beam bundle emerges from an object in an object plane. The collector unit includes at least one mirror shell that receives the rays of the beam bundle emerging from the object and shows an optical effect, and a periodic structure with at least one grating period applied to at least a part of the mirror shell. An illumination system and an EUV projection exposure system are also provided.
Abstract:
In a facet mirror with a number of mirror facets, wherein the mirror facets are provided with reflecting surfaces, the mirror facets are mounted jointly in a basic body via bearing devices. The mirror facets comprise mirror bodies contacting at the periphery with the bearing devices via a surface, line or point contact. The preferred field of use of the facet mirrors is a projection objective of a projection exposure machine in microlithography for fabricating semiconductor elements.
Abstract:
An optical system, for example a projection exposure apparatus for microlithography, has at least one optical element with an optical surface. A correction radiation device is provided that includes at least one correction radiation source for emitting correction radiation. A scanning device has at least one scanning mirror that is irradiated by the correction radiation and driven in such a way that a defined portion of the optical surface of the optical element is scanned with the correction radiation. This results in a correction of imaging characteristics of the optical element by means of heat which is supplied to the optical element by the correction radiation.
Abstract:
The invention relates to a medical pump device comprising a rotary valve (13) having preferably only one rectilinear channel (20) which respectively connects the inlet (4) and the outlet (7) of the pump device, or connects the inlet to a pump chamber (15), or said pump chamber to the outlet, upon rotation of the rotary element (19) of the valve. The invention enables a medical pump device to be especially easily produced, said pump device being preferably inserted between an infusion syringe driver or an infusion container and a catheter, and being used to supply small quantities of liquid in an accurately dosed manner.
Abstract:
There is provided an illumination system for wavelengths of ≦100 nm, having an object plane and a field plane. The illumination system includes a grating element having a plurality of gratings, and a diaphragm. The diaphragm is arranged after the grating element in a beam path from the object plane to the field plane.