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Abstract

A description is given of a macro objective (M) with a corrective compensation of aberrations (Continuous Aberration Suppression; CAS). The macro objective has a first positive optical subassembly (A), a second nearly afocal optical subassembly (B), a stop (APE), a third nearly afocal optical subassembly (B′) and a fourth positive optical subassembly (A′). The third optical subassembly (B′) and the fourth positive optical subassembly (A′) are designed with mirror symmetry relative to the optical subassemblies (A, B) upstream of the stop (APE). The nearly afocal optical subassemblies (B, B′) are displaced jointly inside the macro objective (M) along the optical axis (OA) with the aid of mechanical means in conjunction with linear magnifications of β′≠−1. As a result, the macro objective (M) achieves outstanding imaging properties both over a wide range of linear magnifications (β′=−2.0 to −0.5) and over a wide wavelength spectrum.

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First Claim