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:
Sep. 24, 2013
Filed:
Mar. 24, 2010
Tomoyuki Baba, Saitama, JP;
Hitoshi Miyano, Saitama, JP;
Tomoyuki Baba, Saitama, JP;
Hitoshi Miyano, Saitama, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A capsule endoscope includes an image pickup optical system for imaging an object. The image pickup optical system satisfies a condition expressed by −5≦ΔZr/ΔZp≦5. Assuming ωmax is a maximum half angle of view, ΔZr is a difference between a position of a real image surface with respect to light flux ofωmax and that with respect to light flux of ωmax, and ΔZp is a difference between a paraxial image forming position of a first virtual object plane surface and that of a second virtual object plane surface. The first virtual object plane surface passes through an intersection point Pof the object and principal rays ofωmax. The second virtual object plane surface passes through an intersection point of the object and principal rays of ωmax. The first and second virtual object planes are vertical to the optical axis.