Patent ID: 7880892
Filing Date: 2011-02-01
Classification: A61B,G01N

Abstract:
1. An optical tomographic imaging apparatus comprising: a light source unit including a light source that emits a light beam having a certain wavelength band, and a wavelength selecting device as a light source section filter that selects a wavelength of the light beam emitted from the light source; a light splitting device that splits the light beam emitted from the light source unit into a measurement light beam and a reference light beam; an optical path length adjusting device that adjusts an optical path length of the reference light beam split by the light splitting device; a light amplifying device that amplifies a reflected light beam from a measurement subject when the measurement light beam split by the light splitting device is irradiated on the measurement subject; an amplifying section filtering mechanism having a filter characteristic identical to a time variation characteristic of the light source section filter, and which selects a specific wavelength from the amplified reflected light beam; an optical multiplexing device that multiplexes the reflected light beam from which the specific wavelength has been selected by the amplifying section filtering mechanism with the reference light beam whose optical path length has been adjusted by the optical path length adjusting device; an interference light detecting device that detects an interference light beam between the reflected light beam and the reference light beam multiplexed by the optical multiplexing device; and an image acquiring device that acquires a tomographic image of the measurement subject from the interference light beam detected by the interference light detecting device.