The polymer circular polarizer can convert light of any polarization state within the working wavelength into left-handed or right-handed circularly polarized light, and can also convert left-handed or right-handed circularly polarized light into linearly polarized light. Compared with economical thin-film circular polarizers, the polymer circular polarizer achieves higher ellipticity requirements (≥43.5°). The polymer circular polarizer from LBTEK is mounted in a metal mechanical retaining ring, with two scale lines engraved on the front side of the ring. The scale lines indicate the transmission direction of the internal linear polarizing film. When the beam enters from the side with the engraved lines, the outgoing light is circularly polarized; when entering from the opposite direction, the outgoing light is linearly polarized.

LBTEK polymer circular polarizers convert light of any polarization state within the working wavelength into left-handed or right-handed circularly polarized light, and can also convert left-handed or right-handed circularly polarized light into linearly polarized light. Compared with economical thin-film circular polarizers, polymer circular polarizers achieve higher ellipticity requirements (≥43.5°). LBTEK offers polymer circular polarizers mounted in rotation mounts, with the transmission axis of the linear polarizing film aligned with the 0° marking. When the beam is incident from the side with the marking, the output light is circularly polarized; when incident from the opposite direction, the output is linearly polarized.