Apparatus, system and method for applying optical gradient...

Optical: systems and elements – Diffraction – From grating

Reexamination Certificate

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C359S434000, C359S566000

Reexamination Certificate

active

07324282

ABSTRACT:
The present invention relates to a system of applying optical gradient forces to form a plurality of optical traps to manipulate small particles. The system includes a light source for generating a focused beam of light which is directed along an optical axis though a phase patterning optical element having a variable optical surface and which has a virtual lens encoded thereon. The optical element produces a plurality of beamlets that are coverged at a position between the optical element and a single transfer lens, and directed through the transfer lens to overlap at the back aperture of a focusing lens. The focusing lens coverges the beamlets to form a plurality of optical traps in the working focal region where particles to be examined, manipulated, or measured, are disposed.

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patent: 6416190 (2002-07-01), Grier
patent: H06-123886 (1994-08-01), None
J. Liesener et al. (2000). “Multi-functional optical tweezers using computer-generated holograms”. Optics Communications, vol. 185, 77-82.
Paul C. Morgensen et al. (2000). “Dynamic array generation and pattern formation for optical tweezers”. Optics Communications, vol. 175, 75-81.
Eric R. Dufresne et al. (1998). “Optical tweezer arrays and optical substrate created with diffractive optics”. Review of Scientific Instruments, vol. 69 (5), 1974-1977.
Eric R. Dufresne et al. (2001). “Computer-generated holographic optical tweezer arrays”. Review of Scientific Instruments, vol. 72 (3), 1810-1816.

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