Microscope with a telescopic function and method

Details Microscope with a telescopic function and method Microscope with a telescopic function and method

1997-06-02

1999-07-27

Spyrou, Cassandra

Optical: systems and elements

Compound lens system

Microscope

359399, 359421, 359672, 359827, G02B 2100, G02B 2300, G02B 1502, G02B 702

Patent

active

059300345

ABSTRACT:
An auxiliary optical unit AU, which is removable on an object side of an objective lens of a microscope, has a built-in auxiliary lens group 15 having a negative refractive power. The auxiliary optical unit AU is provided with a focal point adjustment mechanism which shifts the auxiliary lens group 15 in the optical axial direction. By adjusting the auxiliary lens group 15, the telephoto focal point is shifted substantially to infinity when mounted to the objective lens system. The auxiliary optical unit AU is mounted so that the image plane of the auxiliary lens group alone is positioned, while the focus adjustment mechanism is focused at a substantially infinite focal point, where the object for the microscope to be observed is located.

REFERENCES:
patent: 54542 (1866-05-01), Heath
patent: 1128761 (1915-02-01), Cornell
patent: 4217025 (1980-08-01), Takenaka
patent: 4249793 (1981-02-01), Uehara
patent: 5000556 (1991-03-01), Katsuma
patent: 5052788 (1991-10-01), Tachibana
patent: 5126549 (1992-06-01), Yamada

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