The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 1992
Filed:
Feb. 15, 1991
Chikara Nagano, Hachiouji, JP;
Olympus Optical Co., Inc., Tokyo, JP;
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.