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:
Jun. 15, 2004
Filed:
Nov. 19, 2001
Applicant:
Inventors:
Tetsuya Nakamura, Saitama-ken, JP;
Hirohisa Ueda, Saitama-ken, JP;
Rensuke Adachi, Tokyo, JP;
Stephen F. Fulghum, Jr., Marblehead, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 1/05 ;
U.S. Cl.
CPC ...
A61B 1/05 ;
Abstract
An objective lens is substantially telecentric toward the image side, and provided with an ultraviolet cut coating on its rearmost surface. An imaging plane of a CCD is arranged near a position where an image of an object is formed through the objective lens. An ultraviolet and infrared cut filter is interposed between the objective lens and the CCD. The cut coating and the cut filter have a total transmittance of 0.1% or lower for ultraviolet light.