Abstract: An OCT apparatus includes: a light source unit that includes first and second wavelength sweeping light sources which sequentially emit light with first and second spectrum bandwidths; an SS-OCT optical system that splits the light into measurement light and reference light to receive interference signal light; a second detector that is a deviation detector detecting a phase deviation and a wavelength deviation and detects a signal including pieces of FPN; a calculation processor connecting first and second spectrum interference signals and processes the connected spectrum interference signals to acquire an OCT image and that obtains the phase deviation and the wavelength deviation; and a correction unit that corrects the phase deviation and the wavelength deviation and corrects the phase deviation and the wavelength deviation obtained by the calculation processor.

Abstract: There is provided an optical coherence tomography device provided with: an OCT optical system configured to output OCT signal; and an analysis processing unit configured to process the OCT signal and generate motion contrast data of the specimen. The analysis processing unit is provided with: a first image data generation unit configured to process multiple OCT signals to generate first image data representing phase difference information of the multiple OCT signals, and a second image data generation unit configured to process the OCT signal to generate second image data representing amplitude information of the OCT signal. The analysis processing unit generates the motion contrast data based on the phase difference information in the first image data and the amplitude information in the second image data.

Abstract: An optical coherence tomography device includes an SS-OCT optical system which includes a wavelength swept optical source which sweeps an emission wavelength, an optical splitter which splits an interference signal light caused by interference between a measurement light and a reference light into a first interference signal light and a second interference signal light having a phase difference from the first interference signal light, a balance detector which includes a first detector configured to detect the first interference signal light and a second detector configured to detect the second interference signal light, and which processes detection signals from the first and second detectors to perform balance detection, and an optical member which is disposed between the optical splitter and one of the first detector and the second detector to generate a fixed pattern noise by one of the first interference signal light and the second interference signal light.

Abstract: A subjective optometry apparatus includes subjective measurement unit for subjectively measuring an optical characteristic of a subject eye, the subjective measurement unit including a calibration optical system that is disposed in an optical path of a light projecting optical system projecting a visual target luminous flux toward the subject eye and changes an optical characteristic of the visual target luminous flux. The subjective optometry apparatus includes objective measurement unit for objectively measuring the optical characteristic of the subject eye, the objective measurement unit including a measurement optical system that emits measurement light to a fundus of the subject eye and receives reflected light of the measurement light.

Abstract: The present invention relates to an ophthalmologic apparatus for acquiring depth information of an eye including a light source; a measurement optical path guiding measurement light; a reference optical path generating reference light; and a detector generating a detection signal containing an interference signal of the measurement light via the measurement optical path and the reference light coming from the reference optical path; an actuator driving at least part of the interference optical system to vary an optical path length difference between the measurement optical path and the reference optical path; a standard optical system including optical members disposed corresponding to the optical path length differences in one of the measurement optical path and the reference optical path. Optical members guide part of the measurement light or the reference light to the detector.

Abstract: An ophthalmic laser treatment device includes an irradiation unit that irradiates a patient's eye with laser treatment light and a control unit that controls the irradiation unit. The control unit acquires a motion contrast acquired by an OCT unit that detects an OCT signal of measurement light reflected from the patients eye and reference light corresponding to the measurement light, acquires irradiation target information based on the motion contrast, and controls the irradiation unit so as to irradiate the patient's eye with the laser light, based on the irradiation target information.

Abstract: An optical coherence tomography apparatus includes: an OCT light source; a first light splitter configured to split an optical path into a first measurement optical path and a reference optical path; a light guide optical system including a second light splitter, configured to guide the measurement light to a test substance through the second light splitter, the second light splitter splitting the reflected light into the first and second measurement optical paths; a detection optical system detecting first interference between the reflected light having passed through the first measurement optical path and the reference light, and second interference between the reflected light having passed through the second measurement optical path and the reference light; and a calculation controller processing an output signal which is output from the detection optical system to obtain OCT data regarding the test substance.

Abstract: A method for photographing a fundus image includes: acquiring photographing condition data on a first captured image being a cell image of a fundus as reference data for follow-up image capture related to the cell image, and storing the photographing condition data; and selecting, based on an operation input from an examiner, reference data for the follow-up image capture from one or more pieces of the reference data stored in advance, and reproducing a photographing condition in accordance with the selected reference data to newly acquire the cell image.

Abstract: An optical coherence tomography device includes an OCT optical system; a processor. The processor executes: an image generation processing of processing first OCT signals, and generating, based on the first OCT signals, a three-dimensional motion contrast image which is obtained by imaging a moving object in the scanning position; a Doppler shift detection processing of detecting Doppler shift in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.

Abstract: A method of observing a three-dimensional image of an examinee's eye to be examined, includes: obtaining a first three-dimensional image which is a three-dimensional image of an anterior segment of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging a measurement light on the anterior segment of the examinee's eye; obtaining a second three-dimensional image which is a three-dimensional image of a fundus of the examinee's eye by optical coherence tomography for obtaining a tomographic image by converging the measurement light on the fundus of the examinee's eye by a timing different from a timing of obtaining the first three-dimensional image; constructing a three-dimensional eyeball image of the examinee's eye through image processing based on the obtained first and second three-dimensional images; and displaying the constructed three-dimensional eyeball image on a monitor.

Abstract: An ophthalmic photographing apparatus is provided with a SLO optical system including a first optical scanner for scanning a laser beam to obtain a front image of an examinee's eye by the laser beam, a OCT optical system including a second optical scanner for scanning measurement light to obtain a tomographic image of the examinee's eye by use of interference between the measurement light and reference light, an optical path combiner for combining optical paths of the SLO optical system and the OCT optical system, an objective lens system placed between the optical path combiner and the examinee's eye, and a relay lens system placed between the second optical scanner and the optical path combiner. The second optical scanner is placed on a side closer to the relay lens system than a focal point distance of the relay lens is.

Abstract: A subjective optometry apparatus includes: a subjective measurer including a light projecting optical system, a corrective optical system including a right-eye corrective optical system and a left-eye corrective optical system, and an optical member for guiding the target light flux corrected by the corrective optical system to an examinee's eye, the subjective measurer subjectively measuring an optical characteristic of the examinee's eye; and an objective measurer including a measurement optical system for emitting measurement light to a fundus of the examinee's eye and for receiving reflected light from the fundus, the objective measurer objectively measuring the optical characteristic of the examinee's eye via the optical member disposed on an optical path of the measurement optical system.

Abstract: An ophthalmic laser surgery apparatus for treating an eye of a patient includes: a laser light source configured to emit the pulse laser light; an objective lens configured to condense the pulse laser light emitted from the laser light source on the tissue to cause a photodistuption of the tissue; a scanner configured to scan a condensing position of the pulse laser light condensed by the objective lens; and a controller configured to control the scanner to adjust speed of scanning the condensing position depending on a size of the photodisruption which fluctuates in according to an aberration which fluctuates according to a change in the condensing position.

Abstract: An ophthalmic laser surgery apparatus includes an irradiation optical system and including an objective lens, and treats a patient's eye by using a laser beam. The ophthalmic laser surgery apparatus includes a delivery unit that includes an irradiation end unit, includes at least a portion of the irradiation optical system, and optically guides the laser beam, a first movement unit that includes a first drive section and integrally moves the irradiation end unit and an eyeball fixing unit which is connected to the delivery unit and fixes the patient's eye, a second movement unit that includes a second drive section and moves the eyeball fixing unit by driving the second drive section, and drive control means for controlling driving of the first drive section and driving of the second drive section, and individually moving the first movement unit and the second movement unit.

Abstract: An optical coherence tomography apparatus includes: an OCT light source; a first light splitter configured to split an optical path into a first measurement optical path and a reference optical path; a light guide optical system including a second light splitter, configured to guide the measurement light to a test substance through the second light splitter, the second light splitter splitting the reflected light into the first and second measurement optical paths; a detection optical system detecting first interference between the reflected light having passed through the first measurement optical path and the reference light, and second interference between the reflected light having passed through the second measurement optical path and the reference light; and a calculation controller processing an output signal which is output from the detection optical system to obtain OCT data regarding the test substance.

Abstract: An ophthalmic imaging device for capturing a tomographic image of an eye, includes: an OCT optical system detecting interference of reference light and measurement light; a measurement optical system including an optical scanner and an objective optical system, the optical scanner being configured to deflect the measurement light to perform scanning with the measurement light; a driver configured to displace a relative position of the optical scanner with respect to the objective optical system in an optical axis direction; and a controller configured to control the driver to adjust a turning position of the measurement light in the optical axis direction. The controller changes the turning position between a first position corresponding to a first depth band of the eye and a second position corresponding to a second depth band of the eye which is different from the first depth band.

Abstract: An optical coherence tomography (OCT) apparatus includes: a light source; an OCT optical system including: a first light splitter which splits light emitted from the light source into measurement and reference lights, a second light splitter which splits the measurement light into first and second beams, an optical delay path to generate an optical path length difference between the first and second beams, a scan optical system which scans the respective beams on an object to be examined in a transverse direction, a reference optical system, and a detector which receives a spectrum of composite light in which reflected lights of the first and second beams from the object, and the reference light from the reference optical system are combined; and an arithmetic controller which processes an interference signal output from the detector to obtain first and second tomographic images formed respectively by the first and second beams.

Abstract: A laser eye surgery apparatus includes: a laser light source configured to emit pulsed laser light; a scanner configured to scan the pulsed laser light emitted from the laser light source; a condenser configured to concentrate the pulsed laser light scanned by the scanner in a tissue of a patient's eye; and a plane-parallel plate which is provided in a region in which the pulsed laser light is converged or diverged on an optical path of the pulsed laser light from the laser light source to the patient's eye. The plane-parallel plate has a light incident plane to which the pulsed laser light is incident, and a light-emitting plane emitting the pulsed laser light incident from the light incident plane, and the light incident plane and the light-emitting plane are parallel to each other, or are the same plane.

Abstract: An ophthalmic photographing apparatus is provided with a SLO optical system including a first optical scanner for scanning a laser beam to obtain a front image of an examinee's eye by the laser beam, a OCT optical system including a second optical scanner for scanning measurement light to obtain a tomographic image of the examinee's eye by use of interference between the measurement light and reference light, an optical path combiner for combining optical paths of the SLO optical system and the OCT optical system, an objective lens system placed between the optical path combiner and the examinee's eye, and a relay lens system placed between the second optical scanner and the optical path combiner. The second optical scanner is placed on a side closer to the relay lens system than a focal point distance of the relay lens is.

Abstract: An optical coherence tomography device includes an OCT optical system; a processor. The processor executes: an image generation processing of processing first OCT signals, and generating, based on the first OCT signals, a three-dimensional motion contrast image which is obtained by imaging a moving object in the scanning position; a Doppler shift detection processing of detecting Doppler shift in a scanning position specified on the three-dimensional motion contrast image, the plurality of second OCT signals being detected at timings different from the timings when the plurality of first OCT signals are detected; and a velocity obtaining processing of obtaining an absolute velocity of the moving object based on the Doppler shift detected by the Doppler shift detection processing and a three-dimensional structure of the test subject obtained from the three-dimensional motion contrast image generated by the image generation processing.