OTI OPHTHALMIC TECHNOLOGIES INC.
|OTI OPHTHALMIC TECHNOLOGIES INC. Patent applications|
|Patent application number||Title||Published|
|20100067020||COMPACT HIGH RESOLUTION IMAGING APPARATUS - An optical coherence tomography (OCT) apparatus includes an optical source, an interferometer generating an object beam and a reference beam, a transverse scanner for scanning an object with said object beam, and a processor for generating an OCT image from an OCT signal returned by said interferometer. At least the optical source, the interferometer, and the scanner are mounted on a common translation stage displaceable towards and away from said object. A dynamic focus solution is provided when the scanner and a folded object path are placed on the translation stage.||03-18-2010|
|20090153874||EN-FACE OCT WITH PARALLEL DETECTOR ARRAY - In an OCT apparatus, an object light beam is returned from a target and interferes with a reference light beam. Image information is obtained from a depth Z in the target that depends on the optical path difference between the object and reference beams with a resolution that depends on the coherence length of the light. A scanner transversely scans the target with the object beam over a plurality of image points defined by the resolution of the apparatus. Interface optics directs the reference and object beams onto an array of detector elements such that the optical path difference between the reference beam and the object beam varies across the array. The reference beam and the object beam interfere with each other over the array of detector elements for individual image points on the target during each transverse scan. A memory stores a subset of data points corresponding to each individual image point obtained from each detector elements of the array. A processor processes one or more of the subsets of data points to derive image information extending over a range of depths in the target for each individual image point. The obtained image information is displayed on a displace device.||06-18-2009|
|20090141240||Method for Performing Micro-Perimetry and Visual Acuity Testing - A visual acuity examination is performed on a patient by bringing a confocal imaging apparatus up to a patient's eye. Stimuli at various points in the patient's field of view are generated while the patient fixates on a point. The patient's responses to the stimuli are recorded with the movement of the eye with is tracked with the aid of the confocal imaging apparatus. The position of said stimuli on the retina is corrected to take into account any movement of the eye between stimuli.||06-04-2009|
|20090103049||METHOD FOR CORRECTING PATIENT MOTION WHEN OBTAINING RETINA VOLUME USING OPTICAL COHERENCE TOMOGRAPHY - A computer-implemented method of correcting for motion of a sample during OCT imaging obtains a series of cross-sectional volume scans through the sample at different positions on a first coordinate axis, obtains at least two cross-sectional alignment scans in planes intersecting said volume scans at an angle, and stores the alignment scans and the volume scans in memory. The alignment scans are matched to the volume scans at lines of intersection thereof to determine the relative displacement of the volume scans to the sample due to sample motion. The relative displacement is used to correct for motion of the sample between successive volume scans.||04-23-2009|
|20090080739||SWEPT SOURCE OCT APPARATUS - A method of performing spectral OCT imaging on a target involves repeatedly scanning said target along a transverse scanning line with an object beam derived from an OCT interferometer having a narrowband source. The wavelength of the narrowband source is modulated over a range of wavelengths at a rate that is slow relative to the rate of scanning the target. The object beam returned from the target is detected to produce a set of data obtained from multiple scans along said scanning line over the entire range of wavelengths. The data is then processed to extract an OCT image (typically a B-scan) of the target containing depth information.||03-26-2009|
|20090079994||METHOD FOR RELIABLE OPTICAL COHERENCE TOMOGRAPHY SCANS OF VOLUMES OF RETINAL TISSUE - A method of building up a three dimensional OCT image of an object having a limited region sensitive to movement of a scanning beam performs an OCT scan in a scanning pattern that results in said limited region, typically the fovea of the eye, being scanned last.||03-26-2009|
Patent applications by OTI OPHTHALMIC TECHNOLOGIES INC.