Global Patent Index - EP 2168210 A4

EP 2168210 A4 2013-09-25 - METHOD AND APPARATUS FOR NEAR-FIELD IMAGING

Title (en)

METHOD AND APPARATUS FOR NEAR-FIELD IMAGING

Title (de)

VERFAHREN UND VORRICHTUNG FÜR NAHFELDABBILDUNG

Title (fr)

PROCÉDÉ ET APPAREIL D'IMAGERIE EN CHAMP PROCHE

Publication

EP 2168210 A4 (EN)

Application

EP 08775449 A

Priority

  • FI 2008000071 W
  • FI 20070474 A

Abstract (en)

[origin: WO2008152190A1] The invention deals with the problem of identifying small particles or small irregularities in a material. In general, the resolution characteristics of an imaging device could be significantly improved if the device could sense or capture the evanescent part of the spectrum of the incoming wave. It is known that the amplitude of an evanescent wave is attenuated exponentially as a function of the distance from the source. The main principle of operation of the proposed device is to identify and sense these evanescent waves, enhance their amplitude, measure the enhanced field with the invented device in a certain frequency bandwidth and by using a postprocessing algorithm, reconstruct the near-field image of the object. In order to simplify the device and the measurement procedure, a method has been developed that uses only a small number of stationary probes. From the measured results, the original field distribution of the imaged object can be obtained by using a post-processing alorithm.

IPC 8 full level (invention and additional information)

H01Q 15/02 (2006.01); G01N 22/00 (2006.01); G01R 29/08 (2006.01); G01V 3/12 (2006.01)

CPC (invention and additional information)

H01Q 15/02 (2013.01); G01V 3/12 (2013.01); H01Q 15/0026 (2013.01); H01Q 15/0086 (2013.01); H01Q 21/064 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

EPO simple patent family

WO 2008152190 A1 20081218; EP 2168210 A1 20100331; EP 2168210 A4 20130925; FI 20070474 A0 20070614; FI 20070474 A 20081215

INPADOC legal status


2014-09-24 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20140321

2013-09-25 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20130823

2013-09-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G01R 29/08 20060101ALI20130819BHEP

2013-09-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G01V 3/12 20060101ALI20130819BHEP

2013-09-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: G01N 22/00 20060101ALI20130819BHEP

2013-09-25 [RIC1] CLASSIFICATION (CORRECTION)

- IPC: H01Q 15/02 20060101AFI20130819BHEP

2010-09-22 [DAX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (TO ANY COUNTRY) (DELETED)

2010-03-31 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20100108

2010-03-31 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

2010-03-31 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Countries: AL BA MK RS