Measuring and testing – Vibration – Sensing apparatus
Patent
1980-11-10
1982-08-24
Ciarlante, Anthony V.
Measuring and testing
Vibration
Sensing apparatus
73655, G01N 2900
Patent
active
043454755
ABSTRACT:
When sensing the presence of ultrasonic energy in a workpiece portion by illuminating such portion with light from a single-mode frequency stabilized laser, the reflected light, frequency modulated by the Doppler effect due to the ultrasonic energy induced deflection of the workpiece portion, is passed through a gas filled light filter. The frequency modulated light is amplitude modulated by the filter by selecting the frequency of the laser to cause a point of operation which is located along a steep slope portion of the absorption curve characteristic of the filter. To increase the steepness of the slope portion of the filter, the present invention discloses the use of laser light to saturate the filter in a part region.
REFERENCES:
patent: 4129041 (1978-12-01), Bickel
Ciarlante Anthony V.
Feig Philip J.
Krautkramer-Branson, Inc.
Steinberg Ervin B.
LandOfFree
Method and apparatus for receiving ultrasonic energy by optical does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for receiving ultrasonic energy by optical , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for receiving ultrasonic energy by optical will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1432308