Optical coherence tomography apparatus, optical coherence tomography method, and recording medium

An optical coherence tomography method splitting light output from a light source into measurement light and reference light, irradiating a measurement target with the measurement light in a scanning manner, and generating a tomographic image based on an interference signal generated by synthesizing reflected light of the measurement light reflected in the measurement target with the reference light, the optical coherence tomography method comprising:

• fixing a first mirror rotated with a first axis as an axis of rotation in an orientation for reflecting object light that is visible light emitted from a surface of the measurement target to a direction of an image capturer and capturing, by the image capturer, an image of the surface of the measurement target;
• and
• reflecting, by the first mirror, the reflected light of the measurement light reflected deep in the measurement target to a first direction for synthesis with the reference light, causing the measurement light to scan the measurement target by rotation of the first mirror, and generating the tomographic image based on an interference signal between the reflected light and the reference light.

An optical coherence tomography method splitting light output from a light source into measurement light and reference light, irradiating a measurement target with the measurement light in a scanning manner, and generating a tomographic image based on an interference signal generated by synthesizing reflected light of the measurement light reflected in the measurement target with the reference light, the optical coherence tomography method comprising:

• reflecting, by an optical filter provided between a first mirror rotated with a first axis as an axis of rotation and the measurement target and reflecting light in a predetermined wavelength band including a wavelength of object light that is visible light emitted from a surface of the measurement target, the object light to a direction of an image capturer and capturing, by the image capturer, an image of the surface of the measurement target;
• and
• transmitting the reflected light of the measurement light reflected deep in the measurement target through the optical filter and reflecting, by the first mirror, the reflected light to a first direction for synthesis with the reference light, causing the measurement light to scan the measurement target by rotation of the first mirror, and generating the tomographic image based on an interference signal between the reflected light and the reference light.

A non-transitory computer-readable recording medium storing a program, the program causing a computer controlling an optical coherence tomography apparatus splitting light output from a light source into measurement light and reference light, irradiating a measurement target with the measurement light in a scanning manner, and generating a tomographic image based on an interference signal generated by synthesizing reflected light of the measurement light reflected in the measurement target with the reference light to execute processing comprising:

• fixing a first mirror rotatable with a first axis as an axis of rotation in an orientation for reflecting object light that is visible light emitted from a surface of the measurement target to a direction of an image capturer and displaying, on a monitor, an image of the surface of the measurement target captured by the image capturer;
• and
• reflecting, by the first mirror, the reflected light of the measurement light reflected deep in the measurement target to a first direction for synthesis with the reference light, causing the measurement light to scan the measurement target by rotation of the first mirror, and displaying, on the monitor, a tomographic image generated based on an interference signal between the reflected light and the reference light.