Polarizers are group of optical elements that change the polarization state of incoming beam after passing them through. In general, polarized light is described as an elliptical. Even basic states of polarization like linear and circular are actually special cases of elliptically polarized light. Optical components, which modify the state of polarization of optical beam are very important elements commonly used in optics, and especially in laser technique. Construction of these elements is based on two fundamental phenomena – polarization by reflection, and polarization by double refraction. We produce polarizers employing both of the phenomena listed above.