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Title: Use of a focusing vortex lens as the objective in spiral phase contrast microscopy

Patent ·
OSTI ID:1531666

A method and objective apparatus are provided for implementing an enhanced phase contrast microscope. A focusing vortex lens, defined by a diffractive spiral zone plate (SZP) lens, is used for the objective for the phase contrast microscope. The SZP lens focuses and imparts a helical phase to incident illumination to image the specimen with spiral phase contrast. The spiral phase contrast microscope is sensitive to phase gradients in all sample axes. Replacing the objective of a microscope with the diffractive SZP lens of the invention immediately provides existing instruments with spiral phase contrast capability.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357; W-31-109-ENG-38
Assignee:
U Chicago Argonne, LLC (Chicago, IL)
Patent Number(s):
7,864,415
Application Number:
11/856,403
OSTI ID:
1531666
Resource Relation:
Patent File Date: 2007-09-17
Country of Publication:
United States
Language:
English

References (10)

Grating Device Composed of Elongated Layers patent November 1970
Phase contrast X-ray microscope patent August 1996
Multifocal zone plate patent July 1980
Variable spacing diffraction grating patent November 2003
Condenser zone plate illumination for point X-ray sources patent December 2008
Confocal microscope and height measurement method using the same patent June 2003
Achromatic fresnel optics for ultraviolet and x-ray radiation patent July 2005
X-ray optics for phase differential contrast: Design, optimization, simulation, fabrication conference January 2000
Phase contrast microscope for short wavelength radiation and imaging method patent October 2006
Apparatus for inspecting mask patent February 2004

Cited By (1)

Rotational X ray device for phase contrast imaging patent October 2013

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