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. 11, 2021
Filed:
Jul. 11, 2018
Ikegami Tsushinki Co., Ltd., Tokyo, JP;
Takaaki Saito, Tokyo, JP;
IKEGAMI TSUSHINKI CO., LTD., Tokyo, JP;
Abstract
Provided is an image capturing apparatus that not only prevents excitation light from leaking into RGB but also corrects a difference of focal points between visible light and IR and corrects levels of visible light and IR without having a complicated structure. An image capturing apparatusincludes a light irradiation unitthat irradiates an object including a fluorescent material with excitation light and illuminating light, a four-color separation unitthat separates light incident upon a lensinto R, G, B, and IR, an image sensorthat performs photoelectric conversion on each separated light, a picture signal output unitthat generates a picture signal from an electrical signal obtained by the photoelectric conversion, a picture displaythat displays a picture based on the picture signal, a bandpass filterthat does not transmit light near a wavelength band of the excitation light, and a correction filter. The correction filterincludes a circular visible light cutting regionthat cuts visible light out of the incident light, a circular IR cutting regionthat cuts IR out of the incident light, and a dummy glasshaving a predetermined thickness.