Holographic collation

Patent 5216527 Issued on June 1, 1993. Estimated Expiration Date:

October 30, 2011. Estimated 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.

Abstract Claims Description Full Text

Patent References

3572882

3627426

3715164

3837726

Differential holographic interferometry
Patent #: 4464052
Issued on: 08/07/1984
Inventor: Neumann

Differential holographic method
Patent #: 4627729
Issued on: 12/09/1986
Inventor: Breuckmann , et al.

Apparatus and method for the recording and readout of multiple exposure holograms
Patent #: 4707135
Issued on: 11/17/1987
Inventor: Swain , et al.

Differential holography
Patent #: 4725142
Issued on: 02/16/1988
Inventor: Sharnoff

Real-time halographic interferometry with a pulsed laser and flicker-free viewing Patent #: 4999681
Issued on: 03/12/1991
Inventor: Mader

Inventors

Application

No. 785301 filed on 10/30/1991

US Classes:

359/10, Using modulated or plural reference beams356/457, Holography359/24, Superimposed holograms only359/30Having optical element between object and recording medium

Examiners

Primary: Lerner, Martin

International Classes

G01B 009/025
G03H 001/10
G03H 001/28

Abstract

A method and apparatus for the collation or fine comparison of closely related images made with coherent light, such as those that may arise in holographic interferometry, in holo-photoelasticity, or in speckle interferometry.

Other References

Brown et al, "The Computer-Aided Holophoto-Elastic Method," Experimental Mechanics, vol. 20, Jun. 1990, pp. 135 to 144
Collins, "Difference Holography," Applied Optics, vol. 7, No. 1, Jan. 1968, pp. 203 to 205
Fourney et al, "Recording Polarization Effects via Holography," J. Opt. Soc. Am., vol. 58, 1968, pp. 701 to 702
Lai et al, "Dual-Reference Holographic Interferometry With a Double Pulsed Laser," Applied Optics, vol. 27, No. 18, Sep. 15, 1988, pp. 3855 to 3858
Nishida et al, "A New Interferometric Method of Two-Dimensional Stress Analysis," Experimental Mechanics, vol. 4, Dec. 1964, pp. 366 to 376
Tsuruta et al, "Hologram Interferometry Using Two Reference Beams," Japanese Journal of Applied Physics, vol. 7, No. 9, Sep. 1968, pp. 1092 to 1100
Biedermann et al, "Combining Hypersensitization and Rapid in Situ Processing For Time-Average Observation in Real-Time Holograph Interferometry," Journal of Physics E, vol. 3, 1970, pp. 669 to 680
Lin et al, "Microscopic Mapping of Subnanometric Motion in Semitransparent Systems," Experimental Mechanics, Sep. 1991, pp. 257 to 263
Assa et al, "The Application of Holographic Multiplexing To Record Separate Isopachic-and Isochromatic-Fringe Patterns," Experimental Mechanics, Dec. 1974, vol. 14, No. 12, pp. 502-50