30 results about "OCT - Optical coherence tomography" patented technology

The invention aims to provide a full-eyeball optical coherent tomography adaptive system and a full-eyeball optical coherent tomography adaptive method. Compared with the prior art, the full-eyeball optical coherent tomography adaptive system and the full-eyeball optical coherent tomography adaptive method have the advantages that the problem that high-quality OCT (optical coherent tomography) images cannot be simultaneously acquired at ocular anterior segments and ocular posterior segments by means of optical coherent tomography in the prior art can be effectively solved, focusing can be simultaneously carried out on ocular anterior segments and ocular posterior segments by a multi-focus imaging arm, and reference arms with different optical path differences are switched and are combined with the imaging arm, so that the ocular anterior segments and the ocular posterior segments can be imaged simultaneously; aberration introduced at the ocular anterior segments can be computed in real time by the aid of images of the ocular anterior segments, and aberration compensation can be carried out by the aid of a phase modulation array in the imaging arm, so that the high-quality OCT images can be simultaneously acquired at the ocular anterior segments and the ocular posterior segments by the aid of the full-eyeball optical coherent tomography adaptive system and the full-eyeball optical coherent tomography adaptive method.

Based on optical coherence tomography (OCT) imaging of a portion of an eye, a mask of an anatomical feature is derived. Using the mask as a reference, a scan path is determined that is at least partially fitted to and/or partially enclosing the mask. OCT scan data corresponding to the scan path is acquired and analyzed to detect optic neuropathies.

Measuring light with a wide wavelength band is used to provide a tomographic image excellent in vertical resolution. An optical coherence tomography apparatus acquiring a tomographic image of an object to be inspected based on an interference light obtained by causing a return light from a measuring light emitted onto the object to be inspected to interfere with a reference light corresponding to the measuring light, includes: a first dispersion compensation unit having a first dispersion compensation characteristic in a wavelength band of the measuring light; a second dispersion compensation unit provided onto the first dispersion compensation unit and having a second dispersion compensation characteristic in the wavelength band of the measuring light.

The invention discloses a high strength probe used for optical coherence tomography imaging. The high strength probe comprises a single-mode optical fiber, a grin-lens, a refraction lens, high scattering rate heat shrink tubes, a torque cable, a sealing cap and a protection sleeve. The single-mode optical fiber, the grin-lens and the refraction lens are connected together from left to right in sequence, the left end of the single-mode optical fiber is located in the hollow torque cable, the high scattering rate heat shrink tubes cover the torque cable, the single-mode optical fiber, the grin-lens and the refraction lens from left to right in sequence to form a probe structure, the protection sealing cap is installed at the right end of the probe structure, the probe structure is installed in the protection sleeve, and the torque cable transmits torque generated by an OCT system to the probe structure, so that the probe structure performs rotary motion and displacement translational motion in the protection sleeve.

There is provided an apparatus (100; 200) for recording a depth profile of a biological tissue, in particular a frontal eye section (140) of a human eye, according to the principle of optical coherence tomography, comprising a light source (101) adapted to generate a bundle (102) of light rays comprising wavelengths in a predetermined wavelength range with a predetermined bandwidth (??) and comprising an operating wavelength (?0), an interferometer arrangement having a beam splitter device (120) adapted to spatially separate the bundle of light rays generated by the light source into a reference beam (104; 204) and a measurement beam (106) directed toward the tissue, a reference beam deflection device (130; 230) adapted to deflect the reference beam, a beam superpositioning device (150) adapted to spatially superimpose the deflected reference beam onto the measurement beam deflected by the tissue into a superpositioned beam (108; 208), and a detector arrangement (160, 170; 270) for detecting information in the superpositioned beam associated with the difference of the optical path length of the reference beam and the measurement beam. The predetermined wavelength range is a range from 300 nm to 500 nm, preferably from 350 nm to 450 nm and more preferably next to 403 nm.

The invention discloses an optical coherence tomography system. The system comprises a Fourier domain optical coherence tomography sensor system, a signal processing system and an image display system, wherein the signal processing system can be communicated with the Fourier domain optical coherence tomography sensor system to receive a detecting signal and provide an imaging signal; the image display system is used for being communicated with the signal processing system to receive the imaging signal, and the image display system comprises a parallel processor which can be used to calculate three-dimensional structure information and Doppler information from the detecting signal in real time so as to allow the imaging signal to be able to provide the combined structure and flowing real-time three-dimensional structure of an observation target.

In a polarization-sensitive optical coherence tomography system, an interferometer includes single mode fibers and a plurality of polarization controllers. At least one of the plurality of polarization controllers is disposed on each of the fibers of the interferometer. The fibers include a fiber for sample light beam, a fiber for reference light beam, and a fiber for detection light beam. An image forming unit determines a pixel value from a data set consists of two orthogonal polarization components simultaneously obtained at substantially identical spatial positions of a test sample, wherein a measurement light beam has static single polarization state.

A method of processing optical coherence tomography (OCT) scans through a subject's skin is provided. The method comprises: receiving at least one OCT scan through the subject's skin, wherein each scan represents an OCT signal in a slice through the subject's skin; processing each OCT scan so as to determine a set of parameters comprising at least a measure of the atrophy of the vascular structurein the epidermis; in which the processing produces a measurement of skin condition dependent upon each of the set of parameters, and the method comprises outputting the measurement of skin condition.

The invention discloses an optical coherence tomography scanner used for diagnosis in the ophthalmology department. A fixed support is arranged on the right side of an optical coherence tomography scanner box and provided with a forehead bracket, an adjusting handle is fixedly connected to the right side wall of the optical coherence tomography scanner box through a fixing rod, a left fixed frameis arranged at the top of the adjusting handle, an upper supporting frame is arranged at the top of the left fixed frame, an upper spherical contact is arranged at the end, away from the left fixed frame, of the upper supporting frame, the adjusting handle is provided with a sliding groove, a sliding block is arranged in the sliding groove and connected with a right support, a lower supporting frame is arranged at the top end of the right movable support, and a lower spherical contact is arranged at the end, away from the right movable support, of the lower supporting frame. Through the optical coherence tomography scanner used for diagnosis in the ophthalmology department, the eye fatigue of a patient can be effectively relieved, when seeing a doctor, the diagnosis efficiency for the patient can be guaranteed, the high efficiency of diagnosis is improved, and the comprehensiveness of the diagnosis is guaranteed.

An optical coherence tomography (OCT) apparatus comprising a light source module including two or more selectable light sources or one light source configured to selectively operate in two or more source operating modes , or a combination of both, and further comprising an OCT engine coupled to the light source module, the OCT engine comprising an OCT interferometer. The OCT apparatus further includes a mode-switching optics module coupled to the OCT engine and including one or more interchangeable, selectable, or adjustable optics such that the mode-switching The optics module is configured to selectively provide two or more optical configurations of the optical path between the OCT engine and the imaged object according to two or more corresponding modes of operation.