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:
Oct. 15, 2002
Filed:
Jan. 27, 2000
Applicant:
Inventors:
Walter Daschner, Half Moon Bay, CA (US);
Bernard Kress, Neubourg, FR;
Assignee:
Aerial Imaging Corporation, Milpitas, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 2/744 ;
U.S. Cl.
CPC ...
G02B 2/744 ;
Abstract
A diffractive lens constructed in accordance with the invention comprises a set of bands such that the diffractive gratings in each band are modified. This is done to ensure that even if the lens is tilted (e.g. to prevent light from reflecting off the lens and, introducing distortion into an optical system), the lens continues to focus light onto a small point on a target surface. (The target surface is typically an optical or magneto-optic data recording medium.)
Quick Actions:
Daschner, Walter. (2002). Diffractive lens with gratings modified to offset effects caused by holding the lens at an angle with respect to a light source (U.S. Patent No. 6466371). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6466371
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile