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Super-oscillatory lens device

Super-oscillatory lens device
Super-oscillatory lens device
A super-oscillatory lens (10) having a pre-defined pattern to spatially modulate the light beam in amplitude and/or phase which has a blocking element (6) 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 (20). The lens and blocking element focus the light beam to form an elongate needle-shaped focus (15) in the shadow region (20). 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.
WO2013114075 A1
Zheludev, Nikolai
32fb6af7-97e4-4d11-bca6-805745e40cc6
Savo, Salvatore
a06ac681-5714-4df7-b682-6328dbbe7d39
Roy, Tapashree
094726f3-177b-468a-be7a-f299d6c4fef5
Savinov, Vassili
147c7954-4636-4438-a305-cd78539f7c0a
Dennis, Mark
aeb7123e-786d-4ae2-bc21-72eddd61697b
Rogers, Edward
b92cc8ab-0d91-4b2e-b5c7-8a2f490a36a2
Lindberg, Jar
a613abb9-4610-4e63-90da-961a75779fe0

Zheludev, Nikolai, Savo, Salvatore, Roy, Tapashree, Savinov, Vassili, Dennis, Mark, Rogers, Edward and Lindberg, Jar (Inventors) (2013) Super-oscillatory lens device. WO2013114075 A1.

Record type: Patent

Abstract

A super-oscillatory lens (10) having a pre-defined pattern to spatially modulate the light beam in amplitude and/or phase which has a blocking element (6) 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 (20). The lens and blocking element focus the light beam to form an elongate needle-shaped focus (15) in the shadow region (20). 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.

Full text not available from this repository.

More information

Submitted date: 3 February 2012
Published date: 8 August 2013
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 393146
URI: https://eprints.soton.ac.uk/id/eprint/393146
PURE UUID: 063e1e98-93a1-469e-b7dd-1773c6e7c1de
ORCID for Nikolai Zheludev: ORCID iD orcid.org/0000-0002-1013-6636
ORCID for Vassili Savinov: ORCID iD orcid.org/0000-0001-7203-7222

Catalogue record

Date deposited: 13 May 2016 13:58
Last modified: 06 Jun 2018 13:10

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