Focal point adjustment method for an optical coherence tomographic image generation apparatus and an optical coherence tomographic image generation device

摘要

The optical coherence tomography apparatus (1) comprises: a light source (11) that irradiates laser light; an optical splitter (12) that divides the laser light into measuring light that is irradiated on a subject (S) and reference light that is irradiated on a reference mirror (21); a probe (30) that receives scattered light returning after being scattered inside the subject (S); and an optical multiplexer (16) that combines reflected light returning after being reflected by the reference mirror (21) with the scattered light to generate interference light. The apparatus analyzes the interference light and generates an optical coherence tomographic image. The laser light is highly coherent light with a coherence length of 10 mm or more. The probe (30) is equipped with a focus lens (34) that focuses the measuring light on the subject (S), and a focal point adjustment mechanism (35) for adjusting the focal point by adjusting the distance between the focus lens (34) and the subject (S).