Apparatus and method for the remote detection of vibrations of diffuse surfaces
First Claim
Patent Images
1. Apparatus for the remote detection of vibrations of a diffuse surface having randomly distributed points comprising:
- means for providing a source of coherent radiation;
means for projecting a beam of said coherent radiation onto said diffuse surface; and
means, separate and independent of said source, for detecting a reflected time-varying intensity distribution resulting from a scattering of the photons of said beam of coherent radiation by said randomly distributed points on said surface as said surface vibrates and producing corresponding electrical signals.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus and method for the remote detection of vibrations of diffuse surfaces. A beam of coherent light incident on a vibrating diffuse surface is scattered. A photodetector sees the scattering as a time-varying intensity distribution related to the vibration frequency of the surface. The detected time-varying intensity distribution is converted into time-varying electrical currents which can be rendered audible by using a loudspeaker or visual by using an oscilloscope.
-
Citations
14 Claims
-
1. Apparatus for the remote detection of vibrations of a diffuse surface having randomly distributed points comprising:
-
means for providing a source of coherent radiation; means for projecting a beam of said coherent radiation onto said diffuse surface; and means, separate and independent of said source, for detecting a reflected time-varying intensity distribution resulting from a scattering of the photons of said beam of coherent radiation by said randomly distributed points on said surface as said surface vibrates and producing corresponding electrical signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for the remote detection of vibrations of diffuse surfaces comprising the steps of:
-
projecting a beam of coherent radiation from a coherent light source onto said diffuse surface; and detecting, separately and independently of said source, a reflected time-varying intensity distribution resulting from a scattering of the photons of said beam of coherent radiation by said diffuse surface as said surface vibrates and producing corresponding electrical signals. - View Dependent Claims (12, 13, 14)
-
Specification