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. 19, 2012
Filed:
Nov. 29, 2005
Joachim Knittel, Villingen-Schwenningen, DE;
Hartmut Richter, Villingen-Schwenningen, DE;
Stephan Knappmann, Zimmern ob Rottweil, DE;
Joachim Knittel, Villingen-Schwenningen, DE;
Hartmut Richter, Villingen-Schwenningen, DE;
Stephan Knappmann, Zimmern ob Rottweil, DE;
Thomson Licsensing, Boulogne-Billancourt, FR;
Abstract
An apparatus for recording angular multiplexed pits on optical recording media using a device for generating a light beam with an asymmetric intensity distribution is described. The device for generating a light beam with an asymmetric intensity distribution has at least one light influencing part for introducing a phase shift of 180° in a first half of the light beam relative to the second half of the light beam, wherein the border between the first half of the light beam and the second half of the light beam is rotatable around an optical axis of the light beam.