Interferometric method and apparatus for sensing surface deforma

Details Interferometric method and apparatus for sensing surface deforma Interferometric method and apparatus for sensing surface deforma

1975-11-05

1977-09-06

Corbin, John K.

Optics: measuring and testing

Refraction testing

Prism engaging specimen

73 675R, 73 713, G01B 902

Patent

active

040464776

ABSTRACT:
In contact-free testing a workpiece by ultrasonic energy an interferometric method and apparatus is used to sense acoustic energy by determining the deformation of a workpiece surface while such workpiece is undergoing acoustic exploration. The surface of the workpiece is illuminated by a laser beam which is reflected thereat and reaches an optical beam splitter to produce a measuring beam portion and a reference beam portion. The measuring beam portion after reflection at a mirror is transmitted to photoelectric means, while the reference beam portion is time delayed via an optical delay path and then brought to interfere with the measuring beam portion at the photoelectric means.

REFERENCES:
patent: 3319515 (1967-05-01), Flournoy
patent: 3503012 (1970-03-01), Gillard
patent: 3535024 (1970-10-01), Schindler
patent: 3633987 (1972-01-01), Brooks
patent: 3822942 (1974-07-01), Hock

Affiliated with

Also associated with

Rating

Interferometric method and apparatus for sensing surface deforma does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Interferometric method and apparatus for sensing surface deforma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interferometric method and apparatus for sensing surface deforma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2160261