The invention relates to a high aperture, the optical imaging system, in particular for microscopes with apochromatic correction in a wide wavelength range

摘要

An optical imaging system for microscopes, comprising an objective lens and a tube lens unit, the objective an increase in less than or equal to 40fach and a numerical aperture is greater than or equal to 1.0, and to in the near infrared is corrected chromatically, wherein said lens from a plurality of lenses and / or sets of partial systems comprising is composed, characterized by:- a first subsystem (t1), which, as seen from the object side, in the order of a first single lens or of a first two compartment putty member and a second and a third single lens, wherein the second and third single lens a total refractive power of 0,14 d to d have 0,24,- a second subsystem (t2), which is composed of a three compartment putty member with a refractive power of a maximum of 0,06 d and a second two compartment putty member with a refractive power of 0,12 d to 0,2 d is composed,- and a third subsystem, which is composed of a two compartment putty member and a single lens or of a single lens and a meniscus which as a component or of two, which is constructed as a cement links menisci, wherein, as seen from the object side, for the first meniscus the relationship$\mathrm{0,0045}-\text{D}\ast {\text{D}}_{\text{k}}\mathrm{0,0059}$and the second meniscus is largely without power, where d is the total refractive power of the objective and d_k the refractive power of the first meniscus of the third subsystem (t3) are.