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公开(公告)号：US11461898B2
公开(公告)日：2022-10-04
申请号：US16837650
申请日：2020-04-01
Applicant: OPTOS PLC
Inventor： Paul Ross , Alistair Gorman
Abstract: A medical imaging device comprising: an optical imaging module which generates an image of a region of a body part by acquiring image samples at respective sample locations in the region and mapping the samples to corresponding image pixels; a control module which controls the optical imaging module to acquire a first sequence of samples whose corresponding pixel locations follow a path which is spanned by pixels corresponding to the first sequence of samples and extends over a greater portion of the image than an arrangement in an array of a sequence of pixels corresponding to a second sequence of samples that the optical imaging module is operable to acquire, wherein a sum of distances between adjacent pixels in the sequence of pixels is equal to a length of the path; and a registration module which registers the image against a reference image.
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公开(公告)号：US12059210B2
公开(公告)日：2024-08-13
申请号：US17035152
申请日：2020-09-28
Applicant: NIKON CORPORATION , OPTOS PLC
Inventor： Gonzalo Muyo , Alistair Gorman , David M. Williamson , Makoto Fujimoto , Yasufumi Nishi , Azuna Nonaka , Katsuya Watanabe , Miwako Yoshida , Kyoya Tokunaga , Masahiro Mizuta
CPC classification number: A61B3/14 , A61B3/0008 , A61B3/0041
Abstract: The ophthalmic optical system is configured to apply an angular scanning light ray to an eye. M=|ωout/ωin| is defined, where ωin represents an angle between an incident light ray to the ophthalmic optical system and an optical axis of the ophthalmic optical system, and ωout represents an angle between an exiting light ray exiting from the ophthalmic optical system toward the eye and the optical axis. The ophthalmic optical system satisfies a conditional expression Mpar
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公开(公告)号：US11635552B2
公开(公告)日：2023-04-25
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：US20200242768A1
公开(公告)日：2020-07-30
申请号：US16637023
申请日：2017-08-14
Applicant: Optos PLC
Inventor： Praveen Ashok , Alan Anderson , Gonzalo Muyo , Alistair Gorman , Jano Van Hemert
Abstract: A method of controlling an ophthalmic device operable to image an imaging region of a retina and concurrently illuminate an illumination region of the retina, the method including acquiring a reference retinal image by imaging a reference imaging area of the retina; designating a target in the reference retinal image; acquiring a current retinal image of an initial imaging region within the reference imaging area; moving the imaging region from the initial imaging region to a destination imaging region using the target and the reference retinal image, and acquiring a retinal image of the destination imaging region; illuminating the illumination region while the imaging region is the destination imaging region; acquiring one or more retinal images while the illumination module is being illuminated; and comparing a marker retinal image based on the one or more retinal image(s) with a comparison image based on the reference retinal image.
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Patent Agency Ranking
公开(公告)号：US11669968B2
公开(公告)日：2023-06-06
申请号：US16637023
申请日：2017-08-14
Applicant: Optos PLC
Inventor： Praveen Ashok , Alan Anderson , Gonzalo Muyo , Alistair Gorman , Jano Van Hemert
CPC classification number: G06T7/0014 , A61B3/0008 , A61B3/0025 , A61B3/102 , A61B3/1025 , A61B3/12 , G06T2207/30041 , G06T2207/30204
Abstract: A method of controlling an ophthalmic device operable to image an imaging region of a retina and concurrently illuminate an illumination region of the retina, the method including acquiring a reference retinal image by imaging a reference imaging area of the retina; designating a target in the reference retinal image; acquiring a current retinal image of an initial imaging region within the reference imaging area; moving the imaging region from the initial imaging region to a destination imaging region using the target and the reference retinal image, and acquiring a retinal image of the destination imaging region; illuminating the illumination region while the imaging region is the destination imaging region; acquiring one or more retinal images while the illumination module is being illuminated; and comparing a marker retinal image based on the one or more retinal image(s) with a comparison image based on the reference retinal image.
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公开(公告)号：US11253146B2
公开(公告)日：2022-02-22
申请号：US16335174
申请日：2017-10-10
Applicant: OPTOS PLC , NIKON CORPORATION
Inventor： Gonzalo Muyo , Alistair Gorman , Makoto Ishida
Abstract: An ophthalmic device comprising a light source to emit fixation target light, and a reflecting face to reflect scanning light emitted by an emission section and scan the scanning light in a specific direction by changing orientation, the emission section being a scanning light source different to the light source. A concave mirror face is disposed so scanning light reflected by the reflecting face is incident on a subject's eye ocular fundus when the eye is at the concave mirror's focal point, and is arranged such that, when the eye is at the concave mirror's focal point, and when the light source emits fixation target light, that light and scanning light are simultaneously incident on the ocular fundus via different optical paths propagating via the concave mirror face and focal point, the target fixation light following a predetermined optical path for fixing the subject's eye gaze.
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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：US10398310B2
公开(公告)日：2019-09-03
申请号：US15325020
申请日：2015-07-10
Applicant: Optos PLC
Inventor： Derek Swan , Gonzalo Muyo , Alistair Gorman
Abstract: An ophthalmoscope (1) and method for scanning a fundus (23) of an eye (9), comprising a light system (3) which produces linear light, a scanner (5) which receives at least some of the linear light and is movable about a scan axis to produce a 1D scan of the at least some linear light, and a scan transfer system (7) which receives the 1D scan from the scanner and transfers the 1D scan to the eye, wherein the scanner is positioned in the ophthalmoscope such that it receives the at least some of the linear light substantially along the scan axis, the scan transfer system positioned in the ophthalmoscope such that a pupil of the eye is provided at a focal point of the system, and the scanner is positioned in the ophthalmoscope and the scan transfer system is configured to transfer the 1D scan from the scanner through the focal point at the eye pupil and onto the eye fundus.
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公开(公告)号：US20170202457A1
公开(公告)日：2017-07-20
申请号：US15325020
申请日：2015-07-10
Applicant: Optos PLC
Inventor： Derek Swan , Gonzalo Muyo , Alistair Gorman
CPC classification number: A61B3/12 , A61B3/1025 , G02B26/105
Abstract: An ophthalmoscope (1) and method for scanning a fundus (23) of an eye (9), comprising a light system (3) which produces linear light, a scanner (5) which receives at least some of the linear light and is movable about a scan axis to produce a 1D scan of the at least some linear light, and a scan transfer system (7) which receives the 1D scan from the scanner and transfers the 1D scan to the eye, wherein the scanner is positioned in the ophthalmoscope such that it receives the at least some of the linear light substantially along the scan axis, the scan transfer system positioned in the ophthalmoscope such that a pupil of the eye is provided at a focal point of the system, and the scanner is positioned in the ophthalmoscope and the scan transfer system is configured to transfer the 1D scan from the scanner through the focal point at the eye pupil and onto the eye fundus.
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