System And Method For Measuring Oscillations And Characterizing Surface Geometry Of Reflective Surfaces By Reflecting Light Onto An Image Capture Screen

A non-contact method for measuring vibration on a surface of an object, comprising:

• projecting light from two or more light sources towards a point of interest on a surface of an object, where the light projected from the two of more light sources is coherent;
• receiving the light reflected by the point of interest on an image capture screen, where the image capture screen is configured to diffuse the light incident thereon;
• capturing an image of light on the image capture screen using two or more detectors, where each detector of the two or more detectors captures light from a corresponding one of the two or more light sources;
• from the light captured by the two or more detectors, determining, by a processor, change in position of the image on each detector over time, where the processor is interfaced with each of the two or more detectors;
• from the change in position of the image on each detector of the two or more detectors, calculating, by the processor, a series of deflection angles of the surface at the point of intertest about an x axis using triangulation;
• and
• from the change in position of the image on each detector of the two or more detectors, calculating, by the processor, a series of deflection angles of the surface at the point of interest about y axis using triangulation, where the x axis and the y axis define a plane which is parallel to surface of the object.

A non-contact method for measuring vibration on a surface of an object, comprising:

• projecting light from two or more light sources towards an area of interest on a surface of an object, where the light projected from the two of more light sources is directed towards at least two points of interest on the surface of the object;
• receiving the light reflected by the at least two points of interest on an image capture screen, where the image capture screen is configured to diffuse the light incident thereon;
• capturing an image of light on the image capture screen using two or more detectors, where each detector of the two or more detectors captures light from a corresponding one of the two or more light sources;
• for each of the at least two points of interest, determining, by a processor, change in position of the image from the light captured by each detector over time, where the processor is interfaced with each of the two or more detectors;
• from the change in position of the image on each detector of the two or more detectors, calculating, by the processor, a series of deflection angles of the surface at each of the at least two points of intertest about an x axis using triangulation;
• and
• from the change in position of the image on each detector of the two or more detectors, calculating, by the processor, a series of deflection angles of the surface at each of the at least two points of interest about y axis using triangulation, where the x axis and the y axis define a plane which is parallel to surface of the object.