| 主权项 |
1. An optical tomographic imaging apparatus which acquires tomographic images of an object to be examined, where the images are based on reference light multiplexed with return light returned from the object which has been irradiated by measurement light, the apparatus comprising:
a first lens; a scanning unit disposed on the optical path of the measurement light, and configured to scan with the measurement light the object to be examined; a second lens disposed on the optical path of the measurement light between the scanning unit and the first lens; a plurality of optical path branching units which are disposed between the first lens and the second lens, and which are configured to branch, from the optical path of the measurement light, an observation optical path to observe the object to be examined; a splitting unit configured to split light irradiated from a light source into the measurement light and the reference light; and a focusing lens disposed on the optical path of the measurement light between the splitting unit and the scanning unit; wherein in a state in which the object to be examined is irradiated by the measurement light, one optical path branching unit of the plurality of optical path branching units which transmits the measurement light is retracted from the optical path; and wherein the second lens and the scanning unit are disposed such that an incident angle of the measurement light, scanned by the scanning unit, to one optical path branching unit of the plurality of optical path branching units which reflects the measurement light, is maintained. |
