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:
Dec. 20, 1977
Filed:
Oct. 10, 1975
Akio Taira, Hachioji, JA;
Olympus Optical Co., Ltd., Tokyo, JA;
Abstract
A transmitted illumination device for microscopes which can furnish brilliance for viewing, illuminate objects with uniform light and is compact in construction and easy in handling. The device consists of a collector lens, a detachably mounted additional lens system, a field stop, a rear lens system and a condenser lens, arranged in succession from a light source toward a test piece and optically aligned with each other. The additional lens system consists of front and rear components. The front component is composed of a convex lens and the rear component is composed of a convex lens followed by another convex lens. The rear lens system consists of front and rear components each composed of a convex lens.