| 摘要 |
The invention relates to an objective for imaging a specimen comprising a lens group (401,501) comprising a focusing lens forming an intermediate image; a catadioptric arrangement (403,503) having an aspheric surface and comprising a mirror (409,509) and one Mangin mirror (411,511), imaging said intermediate image in a final image. The catadioptric arrangement (403,503) additionally comprises one lens (410,510) placed between the mirror (409,509) and the Mangin mirror (411,511). |
