Patent ID: 7705992

Claim:
An optical tomography system, comprising: a light source unit for emitting a light beam; light dividing means, for dividing the light beam emitted from the light source unit into a measuring light beam and a reference light beam; a probe, for guiding the measuring light beam to a measurement target, and also for guiding a reflected light beam, which is the measuring light beam reflected by the measurement target when irradiated thereon; combining means, for combining the reflected light beam and the reference light beam; interference light detecting means, for detecting a interference light beam, which is formed by the reflected light beam and the reference light beam being combined by the combining means; and image obtaining means, for obtaining a tomographic image of the measurement target from the interference light beam detected by the interference light detecting means; wherein: a polarization maintaining optical fiber, for guiding the measuring light beam and the reflected light beam, is provided within the probe; the probe is configured to be rotatable in the circumferential direction of the polarization maintaining optical fiber; and the length of the polarization maintaining optical fiber is an integer multiple of half a beat length, which is determined by the polarization maintaining optical fiber and the wavelength of the measuring light beam.