Abstract: An optical tomography system for obtaining a tomographic image of an object to be measured includes a light source unit which emits low coherence light. The low coherence light emitted from the light source unit is divided into measuring light and reference light. The reflected light from the object when the measuring light is projected onto the object and the reference light are multiplexed. The interference light of the reflected light and the reference light which have been multiplexed is detected, and a tomographic image information of the object is obtained by carrying out frequency-analysis on the detected interference light. A first detecting mode in which the interference light is detected at a first wavelength resolution and the interference light is detected at a second wavelength resolution higher than the first wavelength resolution are switched.

Abstract: Light emitted from a light source is divided into measuring light and reference light. The reflected light from the object and the reference light are superposed. Interference light of the reflected light and reference light which have been superposed is detected. Intensities of the reflected light in a plurality of positions in the direction of depth of the object are detected on the basis of the frequency and the intensity, and a tomographic image of the object is obtained on the basis of the intensity of the reflected light in each position in the direction of depth. A compensating signal is obtained by removing the spectral components of the measuring light from an interference signal obtained by detection of the interference light, and the compensating signal is provided for detection of the intensities of the reflected light after a Gaussian transform.

Abstract: In an optical tomography system for obtaining a tomographic image of an object to be measured by detecting interference light of the reflected light and the reference light, a controller switches between a first detecting mode in which the interference light is detected at a first wavelength resolution and a second detecting mode in which the interference light is detected at a second wavelength resolution higher than the first wavelength resolution.

Abstract: In an optical tomography system for obtaining a tomographic image of an object to be measured by detecting interference light of the reflected light and the reference light, a controller switches between a first detecting mode in which the interference light is detected at a first wavelength resolution and a second detecting mode in which the interference light is detected at a second wavelength resolution higher than the first wavelength resolution.

Abstract: Light emitted from a light source is divided into measuring light and reference light. The reflected light from the object and the reference light are superposed. Interference light of the reflected light and reference light which have been superposed is detected. Intensities of the reflected light in a plurality of positions in the direction of depth of the object are detected on the basis of the frequency and the intensity, and a tomographic image of the object is obtained on the basis of the intensity of the reflected light in each position in the direction of depth. A compensating signal is obtained by removing the spectral components of the measuring light from an interference signal obtained by detection of the interference light, and the compensating signal is provided for detection of the intensities of the reflected light after a Gaussian transform.

Abstract: An optical tomography system for obtaining a tomographic image of an object to be measured includes a light source unit which emits low coherence light. The low coherence light emitted from the light source unit is divided into measuring light and reference light. The reflected light from the object when the measuring light is projected onto the object and the reference light are multiplexed. The interference light of the reflected light and the reference light which have been multiplexed is detected, and a tomographic image information of the object is obtained by carrying out frequency-analysis on the detected interference light. A first detecting mode in which the interference light is detected at a first wavelength resolution and the interference light is detected at a second wavelength resolution higher than the first wavelength resolution are switched.

Abstract: A non-resonant two-photon absorbing material is provided, comprising a specified compound and exhibiting far stronger non-resonant two-photon absorption and two-photon emission than conventional materials.