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公开(公告)号：US20230284901A1
公开(公告)日：2023-09-14
申请号：US18117066
申请日：2023-03-03
申请人： Tomey Corporation
发明人： Keiichiro Okamoto , Guangchun Bian
CPC分类号： A61B3/14 , A61B3/103 , A61B3/12 , A61B3/1015 , A61B3/0025
摘要： An ophthalmic device may include: a measurement optical system which includes a light-emitting optical system including a light source and a light-receiving optical system including a light receiving element; an arithmetic device configured to calculate an eye refractive power of the subject eye; a beam deflecting member arranged in an optical path of the measurement optical system and configured to deflect beam emitted from the light source, and a driving device configured to drive the beam deflecting member so that the beam emitted from the light source is scanned in a ring shape onto the subject eye. The beam deflecting member may be disposed so that traveling directions of the beam emitted from the light source intersect with each other between the subject eye and the beam deflecting member when the beam deflecting member is driven by the driving device.
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公开(公告)号：US20230240526A1
公开(公告)日：2023-08-03
申请号：US18149375
申请日：2023-01-03
申请人： Tomey Corporation
发明人： Fushi LI , Keiichiro OKAMOTO , Risa HIGASHITA
CPC分类号： A61B3/102 , A61B3/117 , A61B3/0025 , G06T2207/30041
摘要： A tomographic image processing device includes a tomographic image acquisition unit that acquires a plurality of tomographic images including an anterior chamber angle, the tomographic images being obtained by radial scan with a substantially conical vertex as a center; an analysis unit that obtains an analysis value related to the anterior chamber angle from each of the plurality of tomographic images; and a display processing unit that causes a display unit to display information regarding each analysis value obtained from each of the plurality of tomographic images in association with a rotation angle in the radial scan at which the anterior chamber angle corresponding to the analysis value is obtained.
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公开(公告)号：US20230172446A1
公开(公告)日：2023-06-08
申请号：US18075710
申请日：2022-12-06
申请人： Tomey Corporation
发明人： Kota TOTANI , Satoshi Sugiyama
IPC分类号： A61B3/00 , G06F3/04845 , A61B3/14 , A61B3/10
CPC分类号： A61B3/0025 , A61B3/14 , A61B3/0041 , A61B3/102 , G06F3/04845
摘要： An image processing device may include a first image input unit to which a first photographed image obtained by photographing a specific part of the subject eye is inputted, a second image input unit to which a second photographed image obtained by photographing the specific part is inputted, and display unit configured to display a synthesized image obtained by synthesizing the first and second photographed image. The synthesized image may be partitioned into at least a first region and a second region by a first boundary line. The display unit may be configured to display, in the first region, at least a portion which is a part of the first photographed image and corresponds to the first region. The display unit may be configured to display, in the second region, at least a portion, which is a part of the second photographed image and corresponds to the second region.
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公开(公告)号：US11478146B2
公开(公告)日：2022-10-25
申请号：US16250376
申请日：2019-01-17
申请人： Tomey Corporation
发明人： Masahiro Yamanari
IPC分类号： G01B9/02 , A61B3/12 , G01B9/02091 , A61B3/10
摘要： An optical coherence tomographic device may include: a light source; a measurement light generator that generates measurement light and generates reflected light from a target region in a scattering sample by irradiating the target region with the measurement light; a reference light generator that generates reference light; an interference light generator that generates interference light by combining the reflected light and the reference light; an interference light detector that detects the interference light and generates interference signals by converting the interference light; and a processor. The processor may cause the OCT device to execute: acquiring tomographic images for a same cross section in the target region in time series from the interference signals; calculating an entropy of the generated interference signals based on the tomographic images; and specifying a dynamic part in the tomographic images based on the calculated entropy.
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公开(公告)号：US11363947B2
公开(公告)日：2022-06-21
申请号：US17153183
申请日：2021-01-20
申请人： Tomey Corporation
发明人： Yuji Nozawa , Chihiro Kato , Takashi Kamo
摘要： An optical coherence tomographic device configured to acquire a tomographic image of a subjected eye is disclosed herein. The optical coherence tomographic device may include a light source of wavelength sweeping type; and a measurement optical system configured to irradiate the subjected eye with light outputted from the light source, where D/S×λ>1.61 may be satisfied, with a diameter of the light outputted from the light source at an incident position to the subjected eye is D, a wavelength swept frequency of the light source is S, and a center wavelength of the light outputted from the light source is λ.
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公开(公告)号：US11202562B2
公开(公告)日：2021-12-21
申请号：US16562883
申请日：2019-09-06
申请人： Tomey Corporation
发明人： Yuji Nozawa , Chihiro Kato , Takashi Kamo
摘要： An ophthalmic apparatus includes: a light source; a measurement optical system that irradiates an eye with light from the source and guides reflected light from the eye; a reference optical system that guides the light from the source to use the light from the source as reference light; an abnormality detection optical system that has an optical path length of a predetermined length and to guide the light from the source to use the light from the source as abnormality detection light; a light receiving element that receives measurement interference light being combination of the reflected light from the eye and the reference light and abnormality detection interference light being combination of the abnormality detection light and the reference light, and the ophthalmic apparatus determines whether the measurement interference light is abnormal based on waveform of an abnormality detection interference signal outputted from the light receiving element.
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公开(公告)号：US20210121061A1
公开(公告)日：2021-04-29
申请号：US17141514
申请日：2021-01-05
申请人： Tomey Corporation
发明人： Keiichiro Okamoto , Takashi Kamo , Tomoki Hori
摘要： A ophthalmic apparatus may include: a first light source configured to output first light to be irradiated to an anterior segment of a subject eye; and a second light source configured to output second light to be irradiated to a retina of the subject eye. The apparatus may be configured capable of executing a first examination using the first light reflected from the anterior segment and a second examination using the second light reflected from the retina. A wavelength of the second light outputted from the second light source may be smaller than a wavelength of the first light outputted from the first light source.
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公开(公告)号：US20200178791A1
公开(公告)日：2020-06-11
申请号：US16703487
申请日：2019-12-04
申请人： Tomey Corporation
发明人： Yuji Nozawa , Masahiro YAMANARI , Takashi KAMO
摘要： An ophthalmic apparatus may include: a wavelength sweeping light source; a reference optical system; a calibration optical system; a light receiving element configured to receive calibration interference light which is a combination of calibration light and reference light; and a signal processor configured to sample a calibration interference signal outputted from the light receiving element when it receives the calibration interference light. The signal processor may sample the calibration interference light in at least first and second frequency bands, which are different and used for measuring a specific region of a subject eye. The ophthalmic apparatus calculates a difference between first and second waveforms, the first waveform being a waveform of the calibration interference signal that is sampled in the first frequency band and Fourier transformed, the second waveform being a waveform of the calibration interference signal that is sampled in the second frequency band and Fourier transformed.
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公开(公告)号：US20200077882A1
公开(公告)日：2020-03-12
申请号：US16562883
申请日：2019-09-06
申请人： Tomey Corporation
发明人： Yuji Nozawa , Chihiro Kato , Takashi Kamo
摘要： An ophthalmic apparatus includes: a light source; a measurement optical system that irradiates an eye with light from the source and guides reflected light from the eye; a reference optical system that guides the light from the source to use the light from the source as reference light; an abnormality detection optical system that has an optical path length of a predetermined length and to guide the light from the source to use the light from the source as abnormality detection light; a light receiving element that receives measurement interference light being combination of the reflected light from the eye and the reference light and abnormality detection interference light being combination of the abnormality detection light and the reference light, and the ophthalmic apparatus determines whether the measurement interference light is abnormal based on waveform of an abnormality detection interference signal outputted from the light receiving element.
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公开(公告)号：US09835436B2
公开(公告)日：2017-12-05
申请号：US15019973
申请日：2016-02-10
申请人： TOMEY CORPORATION
发明人： Franck E. M. Jaillon , Naoko Hara , Tsutomu Ohmori , Chihiro Kato
CPC分类号： G01B9/02091 , A61B3/102 , G01B9/02019 , G01B9/02027 , G01B9/02045 , G02B5/09 , G02B5/10
摘要： Optical coherence tomography (OCT) apparatuses and methods include a first electro-magnetic radiation (EMR) source providing EMR to a first optical path associated with a sample and a second optical path associated with a reference. A multi-beam generator unit (MBGU) generates first and second EMR beams having different wavelength contents. A scanning system illuminates the sample with the first and second EMR beams, at a first and second time, at a first and second location. An interference module generates interference signals based on received EMR returning from the reference and the first and second EMR beams returning from the sample. A detector generates detection signals based on received interference signals and a processor generates OCT data based on the processed detection signals. In some embodiments, three EMR beams having different wavelength contents with linearly independent vectors illuminate at least one same location of the sample.
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