Abstract: A circular polarizer detection device for detecting a circular polarizer-to-be-detected including a first linear polarizer and a first wave plate is provided. The first linear polarizer has a first transmission axis, the first wave plate has a first fast axis, and there are a preset angle and an error angle between the first transmission axis and the first fast axis. The circular polarizer detection device includes a light source system, a second wave plate and an optical phase demodulation system. A first beam provided by the light source system is converted into a beam-to-be-detected through the circular polarizer-to-be-detected. The beam-to-be-detected enters the rotating second wave plate and then is converted into a second beam. The optical phase demodulation system receives the second beam, generates a phase difference curve, and analyzes a relationship between the rotation angle and the error angle. A circular polarizer detection method is also provided.

Abstract: The present invention relates to a linear polarization component detection system. The system includes elements of a light source configured to emit a detection beam propagating along an optical path; a linear polarization component to be tested configured in the optical path and providing for the detection beam to pass through and transform into a polarized beam; a wave plate configured in the optical path and providing for the polarized beam to pass through and transform into a polarized interference beam; and a phase retrieval device configured to receive the polarized interference beam and sense a light intensity signal from the polarized interference beam.

Abstract: A circular polarizer detection device for detecting a circular polarizer-to-be-detected including a first linear polarizer and a first wave plate is provided. The first linear polarizer has a first transmission axis, the first wave plate has a first fast axis, and there are a preset angle and an error angle between the first transmission axis and the first fast axis. The circular polarizer detection device includes a light source system, a second wave plate and an optical phase demodulation system. A first beam provided by the light source system is converted into a beam-to-be-detected through the circular polarizer-to-be-detected. The beam-to-be-detected enters the rotating second wave plate and then is converted into a second beam. The optical phase demodulation system receives the second beam, generates a phase difference curve, and analyzes a relationship between the rotation angle and the error angle. A circular polarizer detection method is also provided.

Abstract: The present invention relates to a linear polarization component detection system. The system includes elements of a light source configured to emit a detection beam propagating along an optical path; a linear polarization component to be tested configured in the optical path and providing for the detection beam to pass through and transform into a polarized beam; a wave plate configured in the optical path and providing for the polarized beam to pass through and transform into a polarized interference beam; and a phase retrieval device configured to receive the polarized interference beam and sense a light intensity signal from the polarized interference beam.