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:
Feb. 11, 2003
Filed:
May. 01, 2001
Toshiyuki Nagaoka, Akishima, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A portable TV telephone has an objective lens system configured to form an image of an object and an antenna configured to transmit and receive at least one of an image signal representing the image of the object, a dial signal and a voice signal carried by radio waves. A display unit is configured to display at least a dial number and the image of the object and a switch is configured to operate responsive to at least the dial number. The objective lens system includes a diffractive optical element configured to at least correct chromatic aberration produced by the objective lens system. The objective lens system includes, in order from an object side, a first negative lens unit and a second positive lens unit.