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:
Nov. 06, 2012
Filed:
Jul. 02, 2009
Yusuke Yabe, Hachioji, JP;
Koji Omori, Hachioji, JP;
Shinji Yamashita, Tachikawa, JP;
Yoshimine Kobayashi, Hachioji, JP;
Masato Toda, Hachioji, JP;
Yusuke Yabe, Hachioji, JP;
Koji Omori, Hachioji, JP;
Shinji Yamashita, Tachikawa, JP;
Yoshimine Kobayashi, Hachioji, JP;
Masato Toda, Hachioji, JP;
Olympus Medical Systems Corp., Tokyo, JP;
Abstract
A switching filter is provided in a light source device. The switching filter has a first dichroic filter which transmits illumination light in a first wavelength band from a lamp and a fluorescence observation filter which transmits at least illumination light in a second wavelength band and is rotatably provided such that the first dichroic filter and the fluorescence observation filter pass through an illumination light optical axis. An LED portion has a blue LED which emits illumination light in the first wavelength band toward the switching filter. A second dichroic filter capable of transmitting illumination light from the lamp and reflecting illumination light from the LED portion to a condenser lens is also arranged at the switching filter.