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US Patent 6078392 - Direct-to-digital holography and holovision

US Patent Issued on June 20, 2000
Estimated Patent Expiration Date: Icon_subject June 11, 2017Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

Systems and methods for direct-to-digital holography are described. An apparatus includes a laser; a beamsplitter optically coupled to the laser; a reference beam mirror optically coupled to the beamsplitter; an object optically coupled to the beamsplitter, a focusing lens optically coupled to both the reference beam mirror and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the reference beam mirror at a non-normal angle, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form an image. The systems and methods provide advantages in that computer assisted holographic measurements can be made.

Other References

  • International search report form PCT/US98/11947
  • Invention of Holography: D. Gabor, Proc. Roy. Soc. London Ser. A A197, 459 (1949)
  • Invention of sideband(hetrodyne) holography: E. Leith and J. Upatnieks, J. Opt. Soc. Am. 52, 1123 (1962) and J. Opt. Soc. Am. 53 1377 (1963)
  • Mathematical treatise on holography: J.B. Develis and G.O. Reynolds, Theory and Application of Holography, Addison-Wesley, Reading MA, 1967
  • Invention of holographic interferometry: L.O. Heflinger, R.F. Wuerker, and R.E. Brooks, J. Appl. Phys. 37, 642 (1966)
  • Discussion of focused holography (used for holographic interferometry): F.C. Jahoda, R.A. Jeffries, and G.A. Sawyer, Appl. Opt. 6, 1407 (1967)
  • Holographic Interferometry Cookbook, F.C. Jahoda and R.E. Siemon, LA-5058-MS Informal Report UC-37, Los Alamos Scientific Laboratory, Los Alamos, New Mexico, (1972)
  • Interferogram Analaysis: Digital Fringe Pattern Measurement Techniques, M. Kujawinska,(edited by D.W. Robinson and G.T. Reid), IOP Publishing Ltd., Bristol, England, 1993
  • Holographic Interferometry; Principles and Methods, K. Creath and T. Kreis (edited by K. Rastogi), New York, 1994
  • Papers by E. Voelkl on Fourier transform analysis of electron holography: E. Voelkl, L.F. Allard, and B. Frost, J. Microscopy 180, pt. 1, Oct., 1995, pp. 39-50
  • E. Voelkl, L.F. Allard, A.Datye, B. Frost, Ultramicroscopy 58, (1995), pp. 97-103
  • E. Voelkl and L.F. Allard, ICEM-13 (13'th International Conference on Electron Microscopy), 17-22, Jul., 1994, Paris, France, Proceedings, p. 287
  • Shepherd, C., "The World of Holography by Charles Shepherd", from World Wide Web site "http://gate.cks.com/~vader/hogb.html", printed Sep. 13, 1997, 7 pages
  • St.-Hilaire, P., "Scalable Optical Architectures for Electronic Holography", submitted to the Program in Media Arts and Sciences, School of Architecture and Planning, MIT, Jun. 23, 1994, 1 page abstract
  • "Holographic 3D Television", from World Wide Web site "http://panda.ecs.cst.nihon-u.ac.jp/oyl/Eholo/home.e.html", printed Sep. 13, 1997, 1 page
  • St.-Hilaire, "Holographic Video -- The ultimate visual interface?", Optics & Photonics News, vol. 8, No. 8, Aug. 1997, pp. 35-36
  • "Practical Holography VIII", SPIE Proceedings vol. 2176, Meeting date Feb. 6-10, 1994, San Jose, CA, published 1994, Stephen A. Benton, Editor, (MIT), printed from World Wide Web site "http://www.spie.org/web/abstracts/2100/2176.html" on Sep. 13, 1997, 18 pages of abstract

Inventors

Application

No. 873252 filed on 06/11/1997

US Classes:

356/457Holography

Examiners

Primary: Kim, Robert H.

Attorney, Agent or Firm

US Patent References

4094011, System for recording and reproducing hologram
Issued on: 06/06/1978
Inventor: Nagao
4812042, Holographic interferometer
Issued on: 03/14/1989
Inventor: Yokokura ,   et al.
5299035, Holographic imaging through scattering media
Issued on: 03/29/1994
Inventor: Leith, et al.
5515183Real-time holography system
Issued on: 05/07/1996
Inventor: Hashimoto

Foreign Patent References

  • 6-282213 JP 07/09/1994

International Class

G01B 009/02

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