IdealPhotonics' Soleil-Babinet compensator is a polarization optics device capable of precisely adjusting optical path difference. Its core function is to generate a continuously adjustable phase delay (0 to multiple wavelengths) over a wide wavelength range (UV to infrared) through the relative displacement of birefringent crystals. This delay can be used for polarization state manipulation, wavefront compensation, or birefringence measurements.The continuously adjustable phase delay (0 to multiple wavelengths) is achieved through the precise displacement of a pair of birefringent wedge crystals, offering both wide spectral compatibility and subwavelength resolution, and supporting zero-point reset calibration.