Microscope photography lens system

Details Microscope photography lens system Microscope photography lens system

1997-08-15

1998-12-08

Nguyen, Thong

Optical: systems and elements

Compound lens system

With relay

359362, 359645, G02B 1306, G02B 2500

Patent

active

058478698

ABSTRACT:
The present invention allows one to take an intermediate image formed by a microscope objective lens system and reform a clear image of it, at relatively low magnification, on a film surface. The present invention provides for a lens system which comprises, in order, from the observed object end, a first lens group having a convex surface facing toward the objective lens system end, and having positive refractive power, a second lens group, positioned to the rear of the intermediate image, and having negative refractive power, and a third lens group having positive refractive power. The lenses in the system are set to follow predetermined parameters.

REFERENCES:
patent: 4867549 (1989-09-01), Sekine
patent: 5546228 (1996-08-01), Ouchi
patent: 5568319 (1996-10-01), Kaneko et al.

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