Diffractive wave modulating devices

Optical: systems and elements – Diffraction – From zone plate

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C359S572000, C359S230000, C359S213100

Reexamination Certificate

active

07099084

ABSTRACT:
A zone plate modulator modulates an incident wave by changing the relative distance between a pair of complementary reflective zone plates. The modulator acts to reflect the incident wave as a plane mirror in a first configuration, and to diffract the incident wave into a series of focal points along the axis of the modulator as a phase zone plate in a second configuration. A force applied to the zone plates changes the zone plate modulator between the first and second configurations, therefore modulating the incident wave. The force can be an electrostatic force generated by a voltage source. An array of zone plate modulator elements is a compact spot array generator performing both the modulating and focusing functions. An achromatic zone plate modulator provides a both wavelength and polarization independent modulation of the incident wave. A variable optical attenuator comprises achromatic zone plate modulators.

REFERENCES:
patent: 5311360 (1994-05-01), Bloom et al.
patent: 5360973 (1994-11-01), Webb
patent: 5459610 (1995-10-01), Bloom et al.
patent: 5684631 (1997-11-01), Greywall
patent: 5794023 (1998-08-01), Hobbs et al.
patent: 5841579 (1998-11-01), Bloom et al.
patent: 5900637 (1999-05-01), Smith
patent: 6169624 (2001-01-01), Godil et al.
patent: 6177980 (2001-01-01), Johnson
patent: 6501600 (2002-12-01), Godil et al.
patent: 6611377 (2003-08-01), Chung
patent: 2002/0071172 (2002-06-01), Naiki
R. W. Wood, “Phase-Reversal Zone-Plate, and diffraction-Telescopes”, Philosophical Magazine and Journal of Science, vol. 45, p. 511, 1898.
Dario Gil et al., “Parallel maskless optical lithography for prototyping, low-volume production, and research”, Journal of Vacuum Science and Technology B, vol. 20(6), p. 2597, Nov./Dev 2002.
Henry I. Smith, “A proposal for maskless, zone-plate-array nanolithography”, Journal of Vacuum Science and Technology B, vol. 14(6), p. 4318, Nov./Dev 1996.
Janos Kirz, “Phase zone plates for x rays and the extreme uv”, Journal of Optical Society of America, vol. 64, p. 301, 1974.
O. Solgaard et al., “Deformable grating optical modulator”, Optics Letters, vol. 17, No. 9, p. 688, May 1992.
Stephen D. Senturia, “Microsystem Design”, Kluwer Academic Publisher, Boston, 2000.
Margit Ferstl et al., “Static and Dynamic Fresnel zone lenses for optical interconnetions”, Journal of Modern Optics, vol. 43, No. 7, p. 1451, 1996.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Diffractive wave modulating devices does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Diffractive wave modulating devices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diffractive wave modulating devices will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3608673

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.