Imaging systems with improved accuracy and measurements
AssigneeAliph Medical Inc.
InventorMuhammad Al-Qaisi
Life of this patent
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Abstract
A system for providing accurate lateral mapping of images acquired via a scanning mechanism has a modulator synced to the imaging engine clock to generate image markers. The markers are then used to remove distortions and generate spatially-accurate mapping. A method of correcting image distortions by identifying the modulations and removing the distortions according to the spacing of the modulations. The system and the method applicable to ocular biometry and topography with the inclusion of an OCT arrangement to image the whole eye while the traversing the cornea and retina simultaneously, and with the inclusion of an on-axis imaging system to evaluate the quality of the ocular surface.
Claims5
An optical coherence tomography (OCT) system for providing accurate lateral mapping of images acquired via a scanning mechanism, the OCT system comprising:
- an A-line scanner subsystem comprising:
- a light source configured to output a light beam and an imaging engine clock to an object scanner subsystem;
- a detector configured to:
- capture an optical interference signal returned from the object scanner subsystem;
- and
- generate, based on the optical interference signal, an electrical signal;
- and
- one or more processors configured to:
- receive the electrical signal from the detector;
- process the electrical signal to form an uncorrected image comprising image elements and image markers;
- generate, based on the uncorrected image, a corrected image using the image elements and the image markers, wherein the corrected image is free from at least a portion of distortions present in the uncorrected image, and wherein the distortions are caused at least in part by scanning non-linearities associated with the object scanner subsystem;
- and
- provide mapping, imaging, and/or measurements of ocular surfaces;
- and
- the object scanner subsystem comprising:
- a scanner configured to direct the light beam towards an object via an optical path;
- and
- a modulator, located after the scanner along the optical path, wherein the modulator is configured to adjust the light beam towards the object in accordance with the imaging engine clock to generate the image markers, and wherein the modulator is triggered at a rate that produces the image markers on the image elements of the uncorrected image.
Dependencies are inferred from the claim text.