Patent ID: 7782539

Claim:
An immersion microscope objective or examining a specimen, the immersion microscope objective comprising: a plurality of optical lens units conjointly defining an optical axis; said optical lens units being arranged so as to define respective air spaces between ,said optical lens units; an adjusting device for adapting said immersion microscope objective to different immersion mediums; said adjusting device including means for linearly changing two of said air spaces; and, wherein, for adapting to different immersion mediums, the linear change of said two air spaces takes place in accordance with the following function: A 2 , Oil , oD - A 2 , Gly , oD A 2 , Gly , oD - A 2 , Wat , oD = A 1 , Oil , oD - A 1 , Gly , oD A 1 , Gly , oD - A 1 , Wat , oD wherein the index: “Oil,oD” is for the particular air space with the use of the immersion medium “oil” without a cover glass; “Gly,oD” is for the particular air space with the use of the immersion medium “glycerine” without a cover glass; and, “Wat,oD” is for the particular air space when using the immersion medium “water” without a cover glass.