Microscope objective lens

Details Microscope objective lens Microscope objective lens

1998-01-28

1999-07-06

Epps, Georgia

Optical: systems and elements

Lens

Microscope objective

G02B 2102

Patent

active

059204320

ABSTRACT:
An objective lens comprising a positive-refractive power front-side lens group Lf having a junction meniscus lens or a meniscus single lens whose concave side faces the object and a rear-side lens group Lr placed behind said front-side lens group. In said front-side lens group, the refractive index nF and the Abbe's number .upsilon.F of the glass materials of the meniscus lens nearest the object and also the refractive index nR and the Abbe's number .upsilon.R of glass materials of convex lenses out of said rear-side lens group satisfy the following conditions:

REFERENCES:
patent: 3623792 (1971-11-01), Uetake
patent: 4101201 (1978-07-01), Tojyo
patent: 4403835 (1983-09-01), Ushida

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