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    • 1. 发明公开
    • Catadioptric optical system and catadioptric optical element
    • 魔术师系统
    • EP1936421A1
    • 2008-06-25
    • EP07018247.2
    • 2007-09-18
    • Carl Zeiss SMT AG
    • Rostalski, Hans-JürgenBittner, Boris
    • G02B17/08G03F7/00
    • G02B17/0892G02B5/0858G02B17/0812G03F7/70225
    • A catadioptric optical system comprises a plurality of optical elements arranged to image a pattern from an effective object field in an object surface of the optical system to an effective image field in an image surface of the optical system with operating radiation at an operating wavelength. The optical elements include a plurality of lenses and at least one concave mirror. The optical elements include a catadioptric optical element comprising: a body made from a body material transparent to radiation at the operating wavelength, the body having a first surface and a second surface opposite to the first surface, wherein the first surface is a concave surface having a first surface portion and a second surface portion adjacent to the first surface portion, a reflective coating is applied to the first surface portion and the second surface portion is transparent to the operating radiation, whereby the reflective coating forms the concave mirror and the second portion of the first surface forms a concave lens surface. A catadioptric optical element is also disclosed.
    • 反折射光学系统包括多个光学元件,其被布置成将来自光学系统的物体表面中的有效物体的图案成像到具有工作波长的操作辐射的光学系统的图像表面中的有效图像场。 光学元件包括多个透镜和至少一个凹面镜。 光学元件包括反折射光学元件,其包括:由在工作波长处对辐射透明的主体材料制成的主体,所述主体具有第一表面和与第一表面相对的第二表面,其中第一表面是具有 第一表面部分和与第一表面部分相邻的第二表面部分,反射涂层施加到第一表面部分,并且第二表面部分对于操作辐射是透明的,由此反射涂层形成凹面镜,第二部分 的第一表面形成凹透镜表面。 还公开了一种反折射光学元件。