| 摘要 |
<p>Provided is an optical tomographic image acquiring device capable of inhibiting the generation of artifacts and of acquiring a precise optical tomographic image of an object to be measured. An optical tomographic image acquiring device (1) comprises a light source (11), a detector (12), an analyzer (13), a circulator (20), a coupler (30), condenser lenses (41, 42), optical fibers (51, 52), and a reference mirror (91). When the maximum value for the interval of the wavenumber of light received by two adjacent light receiving elements in the detector (12) isδk, the optical path length (L0ref) from the coupler (30) to the detector (12), after reflecting off the reference mirror (91), and the optical path length (L0obj) from the coupler (30) to the detector (12), after reflecting off an object to be measured (92), satisfy the expression |L0obj-L0ref| <π/δk, and the optical path length (L1ref) from the coupler (30) to the detector (12), after reflecting off the condenser lens (41), and the optical path length (L1obj) from the coupler (30) to the detector (12), after reflecting off the condenser lens (42), satisfy the expression |L1obj-L1ref| >π/δk.</p> |
