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:
Mar. 28, 2017
Filed:
Jan. 18, 2013
University of Southampton, Highfield, Southampton, GB;
Nikolay Ivanovich Zheludev, Southampton, GB;
Salatore Savo, Cambridge, MA (US);
Tapashree Roy, West Bengal, IN;
Vassili Savinov, Southampton, GB;
Mark Richard Dennis, Bristol, GB;
Edward Thomas Foss Rogers, Southampton, GB;
Jari Juhani Lindberg, Helsinki, FI;
University of Southampton, Southampton, GB;
Abstract
A super-oscillatory lens () having a pre-defined pattern to spatially modulate the light beam in amplitude and/or phase which has a blocking element () formed integrally with the lens, or as a separate component adjacent to the lens, which is opaque to the light beam to cause diffraction of the light beam around the blocking element and formation of a shadow region (). The lens and blocking element focus the light beam to form an elongate needle-shaped focus () in the shadow region (). In any application in which it is necessary to scan a small spot over a surface, compared with a conventional objective lens focus the elongate shape of the focus relaxes the requirement on a feedback loop to maintain a constant separation between a scan head and a surface being scanned. The elongate shape is also ideal shape for materials processing applications.