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公开(公告)号：US20220079434A1
公开(公告)日：2022-03-17
申请号：US17537300
申请日：2021-11-29
Applicant: NIKON CORPORATION , OPTOS PLC
Inventor： Yasufumi NISHI , Alistair GORMAN
Abstract: An ophthalmic device includes a scanning member, an objective lens, and an optical element. The objective lens includes a first lens group and a second lens group in order from the scanning member side. The optical element is capable of being inserted into and removed from an optical path between the second lens group of the objective lens and the scanning member. In a case in which the optical element is not inserted into the optical path, the objective lens configures a first observation optical system. In a case in which the optical element has been inserted into the optical path, the objective lens and the optical element configure a second observation optical system.
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公开(公告)号：US20220015624A1
公开(公告)日：2022-01-20
申请号：US17339980
申请日：2021-06-05
Applicant: OPTOS PLC
Inventor： Lijo Varughese Chacko , Margaret Catherine Normand
Abstract: A binocular OCT imaging system for simultaneously imaging regions of a first eye and second eye using an interferometer having a reference arm first sample arm and second sample arm, by: obtaining an electrical signal (S) having first frequency components spanning a first band and caused by interference between reference light in the reference arm with light reflected from the first eye in the first sample arm, and second frequency components spanning a second band and caused by interference between the reference light and light reflected from the second eye in the second sample arm; and generating OCT images of: the region of the first eye using first frequency components in a portion of the first band not overlapping the second band; and the region of the second eye using second frequency components in a portion of the second band not overlapping the first band.
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公开(公告)号：US20210348912A1
公开(公告)日：2021-11-11
申请号：US17233672
申请日：2021-04-19
Applicant: OPTOS PLC
Inventor： Miguel Angel Preciado , Lijo Varughese Chacko
Abstract: A swept-source OCT imaging system for imaging a region of an object, comprising: a swept light source which generates a beam of varying wavelength; a scanning element which scans the beam across the object; an interferometer which generates interference light by combining light scattered by the object (owing to the scan) with reference light; a photodetector which generates an electrical signal (S) having frequency components spanning a frequency band and caused by interference of the scattered light with the reference light; a band-pass filter module which band-pass filters the electrical signal; and a sample acquisition module which samples the filtered electrical signal. The band-pass filter module extracts at least some of the frequency components spanning the frequency band from the electrical signal. The sample acquisition module band-pass samples the filtered electrical signal.
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公开(公告)号：US11093742B1
公开(公告)日：2021-08-17
申请号：US15931832
申请日：2020-05-14
Applicant: Optos Plc
Inventor： Peter Robert Wakeford , Enrico Pellegrini
Abstract: An ocular imaging system comprising: an image acquisition module which acquires a retinal image; a landmark location prediction module which predicts locations of at least two landmarks in the retinal image; and an apparatus for alerting a user to an unreliability in at least one of the predicted locations. The apparatus receives the predicted first locations; uses the predicted locations to evaluate a distance metric indicative of a distance between the landmark features; use data indicative of a probability distribution of a distance between the landmark features obtained from measurements of the distance in retinal images different from the retinal image to determine an indication of whether the evaluated distance metric lies outside a predetermined interval about a peak the probability distribution; and generates an alert indicating the unreliability when the determined indication indicates that the evaluated distance metric lies outside the predetermined interval.
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公开(公告)号：US20210100450A1
公开(公告)日：2021-04-08
申请号：US16594985
申请日：2019-10-07
Applicant: Optos Plc
Inventor： Sriram Vikraman Sithalakshmi Amma , Praveen Ashok , Daniel Hurst
Abstract: An ophthalmic scanning system includes a first imaging modality, a second imaging modality different from the first imaging modality, and a control system that maps the first imaging modality to the second imaging modality by compensating for at least one of an optical-mechanical and an electro-mechanical projection difference between the first and second imaging modalities. The control system provides a scan location for the second imaging modality based on a scan location of the first imaging modality.
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Patent Agency Ranking
公开(公告)号：US20210093195A1
公开(公告)日：2021-04-01
申请号：US17036201
申请日：2020-09-29
Applicant: Optos Plc
Inventor： Miguel Angel Preciado
Abstract: An ophthalmic device for imaging an eye, wherein a scanning element scans a first portion of light beam across a region of an eye via a light guiding component and a second portion of the light beam is reflected back by the light guiding component. The ophthalmic device further comprises: a light detector to detect light reflected from eye and guided to the light detector by the light guiding component; and a dynamic amplitude mask which receives the light reflected from the eye and the light reflected back by the light guiding component, and has an unmasked portion to allow light reflected from the eye to reach the light detector, and a masked portion whose spatial distribution varies with a scan angle such that the masked portion prevents light reflected back by the light guiding component from reaching the light detector during the scan.
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公开(公告)号：US20210035301A1
公开(公告)日：2021-02-04
申请号：US16943618
申请日：2020-07-30
Applicant: NIKON CORPORATION , Optos PLC
Inventor： Devin SOARES , Branden COLEMAN , Bradley YATES , Naoyuki KAWACHI
IPC: G06T7/00 , G06F3/0482 , G06F3/0484 , G16H30/40 , G16H50/20 , G16H40/67 , G16H10/60
Abstract: An information processing apparatus comprises: a processor configured to execute a program; and a storage device configured to store the program, the processor being configured to execute: obtaining processing of obtaining a diagnosis result of both eyes; generation processing of generating diagnosis result display information including a scale indicating a plurality of degrees of progresses related to a symptom, a first index indicating a degree of progress of a right eye based on a diagnosis result of the right eye, and a second index indicating a degree of progress of a left eye based on a diagnosis result of the left eye; and output processing of outputting the diagnosis result display information generated by the generation processing.
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公开(公告)号：US20200237217A1
公开(公告)日：2020-07-30
申请号：US16637075
申请日：2017-08-14
Applicant: Optos PLC
Inventor： Alan Anderson , Ian Gourlay , Praveen Ashok
Abstract: An ophthalmic device including an illumination module which scans light across a region of the retina of an a eye when the pupil is disposed at a focal point of the illumination module. The ophthalmic device further comprises components (2, 3-1, 4-1) for: aligning the pupil with the focal point; monitoring a position of the pupil relative to the focal point and maintaining the alignment based on the monitored position; aligning a scan location of the illumination module on the retina to a target scan location while the alignment of the pupil with the focal point is being maintained, wherein the illumination module performs scan at the target scan location The ophthalmic device further maintains the scan location at the target scan location while the alignment of the pupil with the focal point is being maintained, using scan location correction information based on retinal feature information.
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公开(公告)号：US20200166676A1
公开(公告)日：2020-05-28
申请号：US16636999
申请日：2017-08-14
Applicant: Optos PLC
Inventor： Alan Anderson , Praveen Ashok , Hiroshi Kasai , Alistair Gorman
Abstract: An optical system comprising: an optical element having an optical property responsive to an applied signal, a variation of the optical property with the signal exhibiting hysteresis in a first range of values and no hysteresis in a second range of values of the signal; a memory storing data representing a hysteresis curve which indicates the variation of the optical property with increasing and decreasing values of the signal; and a controller which continuously controls the optical property by: generating, based on the stored data, a cyclic signal having a discontinuity in each cycle of the cyclic signal, and setting the discontinuity size in each cycle based on the stored data such that a part of the variation of the optical property with the cyclic signal coincides with a part of the variation represented by the stored data; and applying the cyclic signal to the optical element.
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公开(公告)号：US20190290119A1
公开(公告)日：2019-09-26
申请号：US16438298
申请日：2019-06-11
Applicant: OPTOS PLC
Inventor： Jano Van Hemert , Michael Verhoek
Abstract: A method of determining a geometrical measurement of a retina of an eye, comprising obtaining a two dimensional representation of at least a portion of the retina of the eye (34), deriving a geometrical remapping which converts the two dimensional representation of the retinal portion to a three dimensional representation of the retinal portion (36), using one or more coordinates of the two dimensional representation of the retinal portion to define the geometrical measurement to be taken of the retina on the two dimensional representation (38), using the geometrical remapping to convert the or each coordinate of the two dimensional representation of the retinal portion to an equivalent coordinate of the three dimensional representation of the retinal portion (40), and using the or each equivalent coordinate of the three dimensional representation of the retinal portion to determine the geometrical measurement of the retina of the eye (42).
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