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:
Aug. 29, 2000
Filed:
Jul. 17, 1997
Applicant:
Inventors:
Tom D Milster, Tucson, AZ (US);
Wenbin Jiang, Phoenix, AZ (US);
Michael S Lebby, Apache Junction, AZ (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369112 ; 369122 ;
Abstract
An optical pickup head for high density optical storage applications and a method of fabrication including a first order mode light source and a phase shift mask. The light source is capable of emitting a power output of at least 10 mW. The phase shift mask positioned to allow for a 180.degree. shift in light emitted therethrough, thereby creating a reduced focal spot size for high density data write applications. The optical pickup head capable of high density read and write applications for both CDs and DVDs.