Microscope objective lens and a microscope incorporating same

Details Microscope objective lens and a microscope incorporating same Microscope objective lens and a microscope incorporating same

1996-03-05

1998-05-26

Nguyen, Thong

Optical: systems and elements

Lens

Microscope objective

359368, 359656, G02B 2102, G02B 2100

Patent

active

057575525

ABSTRACT:
A microscope objective, and microscope incorporating same, are disclosed. A representative embodiment of the objective comprises, arranged on an optical axis, a front lens group having positive refractive power disposed on the object side, a rear lens group having negative refractive power disposed on the image side, and a corrective lens group interposed between the front and rear lens groups. The corrective lens group is axially movable and comprises a pair of meniscus lens elements each of which having a convex surface oriented toward each other. The corrective lens group serves to correct aberrations arising from a cover glass or other refractive body situated between the specimen being observed and the objective lens. To such end, the objective preferably satisfies the conditions:

REFERENCES:
patent: 4403835 (1983-09-01), Ushida
patent: 4588264 (1986-05-01), Shimizu
patent: 4666256 (1987-05-01), Shimizu et al.
patent: 5076676 (1991-12-01), Saito
patent: 5532878 (1996-07-01), Suenaga et al.

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