Quantitative measurement method of ultrasonic grating phase amplitude
An ultrasonic grating and quantitative measurement technology, applied in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., can solve problems such as complex optical paths, no consideration of dynamic and spatial high-frequency phase object diffraction characteristics, complex unwrapping algorithms, etc.
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[0068] A device capable of quantitatively measuring the phase amplitude of an ultrasonic grating, such as Figure 6 As shown: monochromatic light source 1, beam expander filter device 2, collimator lens 3, adjustable diaphragm 4, water tank 5, lens 8, optical attenuator 9 and camera equipment 10 are arranged in sequence along the direction of beam advance, and the ultrasonic generator 6 and the ultrasonic reflector or sound-absorbing sponge 7 are respectively located on both sides of the water tank 5 parallel to the beam direction.
[0069] The specific composition of the device capable of quantitatively measuring the phase amplitude of the ultrasonic grating is as follows: the monochromatic light source 1 is a He-Ne laser or a semiconductor laser, etc.; Convex lenses and pinholes are arranged in sequence according to the forward direction of the light beam; the adjustable aperture 4 is an ordinary mechanical aperture for manually changing the diameter, and the diameter range ...
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