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:
Aug. 02, 1994
Filed:
Jan. 14, 1993
Hiroya Fukuyama, Sagamihara, JP;
Hisao Kitagawa, Tokyo, JP;
Mitsunori Yamamoto, Tokyo, JP;
Shingo Kashima, Sagamihara, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A laser beam from a light source is reflected by a beam splitter and two galvanomirrors, and enters a pupil projection lens. The beam passing through the lens forms a spot on an image plane of an objective. This spot is two-dimensionally scanned by shaking the galvanomirrors with respect to their axes perpendicular to each other. Reflected light or fluorescence from a sample is returned to the beam splitter through the same path, passes through it, and is then reflected by a mirror. This optical system includes an optical unit which can be inserted/removed therein/therefrom. When the optical unit is removed, the optical system serves as a confocal optical system. When the optical unit is inserted, the optical system serves as a nonconfocal optical system. In the confocal optical system, the beam from the mirror enters a condenser, converges, passes through an iris and enters a photomultiplier tuber. The condenser includes a convex lens and a concave lens. In the nonconfocal optical system, the beam from the mirror enters a condenser, converges and is focused on the iris to a spot. The beam passing through the iris enters the photomultiplier tube.