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:
May. 16, 1995
Filed:
May. 25, 1993
Seiji Ishikawa, Chigasaki, JP;
Masanori Hirai, Tokyo, JP;
Hajime Murakami, Chigasaki, JP;
Masao Yamamoto, Tama, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Scalar Co., Tama, JP;
Abstract
The present invention is intended to enable the change of the operating mode of an observation apparatus of a video system between a fluorescent observation mode and an ordinary observation mode and to enable the observation apparatus to reproduce a clear image for observation. The observation apparatus in accordance with the present invention uses a principle that an image pickup system provides three color signals, namely, R-, G- and B-signals. The image pickup system of the observation apparatus is provided with an illuminating light selecting means for selectively using light in a specified wavelength region as illuminating light, and a color signal selecting means for selectively providing the color signals. When the specified wavelength region is the visible region, at least the color signals in a wavelength region including the specified wavelength region including the illuminating light are cut off. When the specified wavelength region is an ultraviolet region, the color signals in a wavelength region including the main wavelength region including fluorescent light emitted by excitation by the illuminating light in the ultraviolet region are provided selectively.