MEASURING METHOD, MEASURING APPARATUS FOR SURFACE PROFILE OF LIQUID-LIQUID INTERFACE AND MICRO-FLUIDIC VARIABLE OPTICAL DEVICE INCLUDING THE MEASURING APPARATUS

摘要

An interface measurement method to measure an interface shape between two liquids in contact with each other comprises: a parallel light emitting step to emit parallel light to an interface; a Fourier transformation step to Fourier-transform the light refracted from the interface; a detection step to detect the Fourier-transformed light by an image sensor; and a calculation step to calculate the shape of the interface from the light information detected by the image sensor.