Optical: systems and elements – Compound lens system – With image recorder
Patent
1991-02-15
1992-09-08
Hannaher, Constantine
Optical: systems and elements
Compound lens system
With image recorder
359368, 359372, G02B 2136
Patent
active
051463636
ABSTRACT:
A microscope optical system having an objective lens, an observing direction converting prism bending a beam of light from the objective lens in a predetermined direction, and an eyepiece for observing an image formed by the beam of light bent in the predetermined direction comprises a first prism having the same bottom angle as the observing direction converting prism, replaceable with respect to the observing direction converting prism, a loop optical path comprised of an odd number of reflecting members for conducting the light beam transmitted by the first prism in the predetermined direction, and a photographic lens provided in the loop optical path. Thus, the microscope optical system has important advantages in practical use that where image recordings are made in photography and video, the field range and the position of a photographic image can be observed as they are through the eyepiece, magnification is variable without rendering the lens barrel large, and the structure is simple with low cost.
REFERENCES:
patent: 4518230 (1985-05-01), Weber
patent: 4527869 (1985-07-01), Nihoshi
patent: 4547047 (1985-10-01), Koike et al.
patent: 4643540 (1987-02-01), Kawasaki et al.
Glick Edward J.
Hannaher Constantine
Olympus Optical Co., Inc.
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