Interferometric measurements, such as used in holographic, shear and speckle interferometry, made using liquid crystal polymers to provide shutter effects by changing their properties to vary the light that can pass through them

摘要

Method and device for regular illumination of objects for interferometric measurements in which liquid crystal polymers are placed in the beam path of the light source. The LC-Ps are used to adjust the intensity of light passing through them from a zero value up to a maximum value. Use of LC-Ps with CCD detectors enables the sampling frequency of the camera to be optimized in conjunction with the operation of the LC-Ps.