An imaging apparatus (100； 200； 300) configured to image an object to be examined (115) is provided. The apparatus includes splitting means (122； 209； 305) configured to split light obtained by combining the returned light and the reference light into a plurality of lights having different polarization components； and detecting means (133, 134； 312, 313) configured to detect the plurality of lights. The apparatus further includes a correcting unit configured to correct a phase difference between different polarization components generated by an optical member provided on an optical path of the measurement light or an optical path of the reference light.
