# US 2025/0152002 A1 · Device for measuring the characteristics of the human eye using oct technology > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0152002 A1 - Document ID: US20250152002A1 - Status: Published application - Kind: A1 - Application number: 18/751,713 - Filed: 2024-06-24 - Published: 2025-05-15 - Earliest claimed: 2023-11-13 - Assignees: OPTOPOL Technology Sp. z o.o. - Applicants: OPTOPOL Technology Sp. z o.o. - Inventors: Grzegorz Bednarczyk; Grzegorz Slusarczyk; Pawel Staniszewski - Web page: https://patentgrep.com/patent/US20250152002A1 ## CPC - A61B 3/102: {for optical coherence tomography [OCT]} - A61B 3/0016: {Operational features thereof} - A61B 3/14: Arrangements specially adapted for eye photography - G01B 9/02044: {Imaging in the frequency domain, e.g. by using a spectrometer} - G01J 3/0208: {using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction} - G01J 3/0235: {using means for replacing an element by another, for replacing a filter or a grating} - G01J 3/0237: {Adjustable, e.g. focussing} - G01B 9/02091: Tomographic interferometers, e.g. based on optical coherence - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) ## Abstract A device for measuring the characteristics of the human eye with OCT technology, used for measuring eye properties, that has a light beam source with a low time coherence, a light beamsplitter used for dividing a single light beam coming from the light beam source into two and directing them towards the tested eye and the reference path and for directing the light beams that return from the reference path and from the tested eye, which enables the interference of those returning light beams and directing them further to the appropriate spectrometer, optical elements of the reference path and optical elements for directing the light onto the tested eye, a spectrometer with a collimator, a diffraction element, an optical lens and detector. The device has optical means for adjusting the spectrometer's imaging window by adjusting the spectral range of the wavelength recorded by the detector, which means are located within the spectrometer. ## Claims ### Claim 1 A device for measuring the characteristics of the human eye in the OCT technology, used for measuring eye properties, that has the following components within the optical path of the light beam: a light beam source with a low time coherence, a light beamsplitter used for dividing a single light beam coming from the light beam source into two and directing them towards the tested eye and the reference path and for directing the light beams that return from the reference path and from the tested eye, which enables the interference of those returning light beams and directing them further to the appropriate spectrometer, optical elements of the reference path and optical elements for directing the light onto the tested eye, an appropriate spectrometer comprising: a collimator, a diffraction element, an optical lens, detector, wherein the device is provided with additional optical means configured and suited for adjusting the spectrometer's imaging window by adjusting the spectral range of the wavelength recorded by the detector, which means are located within the spectrometer, wherein the additional optical means are selected from a group including a set of replaceable optical lenses a deformable multifocal lens, means for shifting one of the lenses in the optical lens, and an additional rotating diffraction element, or a combination thereof. ### Claim 2 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of a set of optical lenses that replace a single optical lens, each of which is suitable for providing a different imaging window height. ### Claim 3 (depends on 2) The device according to claim 2 provided with two to five sets of optical lenses. ### Claim 4 (depends on 3) The device according to claim 3 provided with three sets of optical lenses. ### Claim 5 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of a deformable multifocal lens being part of the spectrometer's optical lens which is accompanied by means for deforming the multifocal lens. ### Claim 6 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of means for shifting the position of the optical lens relative to the detector. ### Claim 7 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of means for shifting one of the lenses of the optical lens. ### Claim 8 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of two sets of optical lenses, each of which is provided with means for shifting one of the lenses. ### Claim 9 (depends on 1) The device according to claim 1, wherein the additional optical means have the form of the second diffraction element located between the diffraction element and the optical lens, which the second diffraction element is provided with means for shifting its position by changing its position angle. ### Claim 10 (depends on 9) The device according to claim 9, wherein the first diffraction element is also provided with means for changing its position by changing its position angle. ### Claim 11 (depends on 10) The device according to claim 10, additionally fitted with a movable focal lens for switching the light beam focusing area between the posterior part of the eye (i.e., the area of the retina) and the anterior chamber of the eye (i.e., the area of the cornea and lens).