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. 06, 2000
Filed:
Apr. 08, 1998
Applicant:
Inventors:
Yoshimi Obara, Tokyo, JP;
Moriyasu Shirayanagi, Tokyo, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02C / ;
U.S. Cl.
CPC ...
351159 ; 351 41 ;
Abstract
Disclosed is a spectacle lens which includes a diffractive structure for producing diffraction to correct transverse chromatic aberration caused by a macroscopic surface shape of the spectacle lens. The diffractive structure is composed of a series of rings formed integral with the spectacle lens.