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. 05, 1995
Filed:
Feb. 01, 1994
Applicant:
Inventors:
Hiroshi Tsutsui, Yawata, JP;
Yoshinao Taketomi, Moriguchi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385 14 ; 356 71 ; 359-2 ; 359 34 ; 382124 ; 385 37 ; 385129 ;
Abstract
A card-shaped waveguide-type image transmission device has an image transmission base member piled up on a light illumination base member, and an optical system such as grating patterns and diffraction lens pattern for diffracting and focusing light beams are formed on the surfaces of the image transmission base member and the light illumination base member. The card-shaped waveguide-type image transmission device is integrated with an ID card, an IC card, an optical card or a ROM card as a fingerprint identification device.