Use of a focusing vortex lens as the objective in spiral...

Details Use of a focusing vortex lens as the objective in spiral... Use of a focusing vortex lens as the objective in spiral...

2011-01-04

2011-01-04

Nguyen, Thong (Department: 2872)

Optical: systems and elements

Compound lens system

Microscope

C359S368000, C359S385000, C359S565000

Reexamination Certificate

active

07864415

ABSTRACT:
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.

REFERENCES:
patent: 3542453 (1970-11-01), Kantor
patent: 4210391 (1980-07-01), Cohen
patent: 5550887 (1996-08-01), Schmal et al.
patent: 6580518 (2003-06-01), Eda et al.
patent: 6643065 (2003-11-01), Silberman
patent: 6686591 (2004-02-01), Ito et al.
patent: 6917472 (2005-07-01), Yun et al.
patent: 7119953 (2006-10-01), Yun et al.
patent: 7466796 (2008-12-01), Bloom
C. Chang, A. Sakdinawat, P. Fischer, E. Anderson, and D. Attwood, “Single-element objective lens for soft x-ray differential interference contrast microscopy,” Opt. Lett. 31, 1564-1566 (2006).
V. Aristov, M. Chukalina, A. Firsov, T. Ishikawa, S. Kikuta, Y. Kohmura, A. Svintsov, and S. Zaitsev, “X-ray optics for phase differential contrast: design, optimization, simulation, fabrication,” eds. W. Meyer-Ilse, T. Warwick, and D. Attwood, AIP Conference Proc. CP507, 554 (2000).

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