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公开(公告)号：US20220400947A1
公开(公告)日：2022-12-22
申请号：US17809706
申请日：2022-06-29
发明人： Ralf EBERSBACH , Martin HACKER , Gerard ANTKOWIAK , Peter KLOPFLEISCH , Ferid BAJRAMOVIC , Tobias BÜHREN , Matthias REICH
摘要： A device for determining biometric variables of the eye, as are incorporated in the calculation of intraocular lenses including a multi-point keratometer and an OCT arrangement. The keratometer measurement points are illuminated telecentrically and detected telecentrically and the OCT arrangement is designed as a laterally scanning swept-source system with a detection region detecting the whole eye over the whole axial length thereof. The multi-point keratometer ensures that a sufficient number of keratometer points are available for measuring the corneal surface. By contrast, telecentricity ensures that the positioning inadequacies of the measuring instrument in relation to the eye to be measured do not lead to a local mismatch of the reflection points. The swept-source OCT scan detects the whole eye over the length thereof so that both anterior chamber structures and retina structures can be detected and a consistent whole eye image can be realized.
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公开(公告)号：US20220244178A1
公开(公告)日：2022-08-04
申请号：US17433776
申请日：2020-02-28
发明人： Rainer LEITGEB , Manfred DICK , Roland BERGNER , Ralf EBERSBACH , Thomas PABST
摘要： The invention relates to a method for controlling a semiconductor-laser-diode-based SS-interferometer system (SS=swept source), which allows for a wide range of application and is suitable for use in ophthalmology, in particular for imaging and for determining biometric measurement values of the eye. In the method according to the invention, by means of periodic current modulation, the operation of single semiconductor laser diodes is designed such that a highly coherent spectral laser line can be adjusted with a highest possible repetition rate and over a wide wavelength range. In addition, the following parameters: centre wavelength, sweep rate, sweep range, optical power in the eye and coherence length are adjusted such that the method is suitable for imaging and biometric applications via whole-eye scans. The proposed semiconductor-laser-diode-based SS-interferometer system is provided, in particular, for biometric measuring of the eye. Given that the embodiments are based preferably on optical, coherence tomographic scan images, the main application lies in opthalmological diagnostics, treatment and the preparation of surgical procedures and follow-up thereof.
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公开(公告)号：US20170296047A1
公开(公告)日：2017-10-19
申请号：US15583439
申请日：2017-05-01
发明人： Ralf EBERSBACH , Martin HACKER , Gerard ANTKOWIAK , Peter KLOPFLEISCH , Ferid BAJRAMOVIC , Tobias BÜHREN , Matthias REICH
摘要： A device for determining biometric variables of the eye, as are incorporated in the calculation of intraocular lenses including a multi-point keratometer and an OCT arrangement. The keratometer measurement points are illuminated telecentrically and detected telecentrically and the OCT arrangement is designed as a laterally scanning swept-source system with a detection region detecting the whole eye over the whole axial length thereof. The multi-point keratometer ensures that a sufficient number of keratometer points are available for measuring the corneal surface. By contrast, telecentricity ensures that the positioning inadequacies of the measuring instrument in relation to the eye to be measured do not lead to a local mismatch of the reflection points. The swept-source OCT scan detects the whole eye over the length thereof so that both anterior chamber structures and retina structures can be detected and a consistent whole eye image can be realized.
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4.发明公开公开(公告)号：US20240268663A1
公开(公告)日：2024-08-15
申请号：US18568151
申请日：2022-05-20
发明人： Wei-Jun CHEN , Ralf EBERSBACH , Roland BERGNER , Marko SCHAAF , Martin VOLKWARDT
IPC分类号： A61B3/117 , A61B3/00 , A61B3/10 , A61B3/15 , G06T5/70 , G06T7/00 , G06T7/13 , G06T7/62 , G06T7/73
CPC分类号： A61B3/1176 , A61B3/0041 , A61B3/0091 , A61B3/102 , A61B3/156 , G06T5/70 , G06T7/0012 , G06T7/13 , G06T7/62 , G06T7/73 , G06T2207/10024 , G06T2207/10101 , G06T2207/20208 , G06T2207/30041 , G06T2207/30204
摘要： A light source that projects a fixation mark into the eve and an image sensor that receives light that has been reflected, diffracted or scattered from the cornea, lens and retina of the eve. A digital camera that captures HDR images of the eve predominantly only with activated fixing illumination. A control unit is designed to detect reflections, as well as diffracted and scattered light of the fixing mark of eve structures in the images transferred from the image sensor and to optimize, evaluate and display the captured HDR images of the eye on a display unit. The invention is provided for different ophthalmological devices, but, in principle, it can be applied to other technical fields in which additional information of the object to be imaged is generated and correspondingly evaluated via the capturing of HDR images.
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公开(公告)号：US20200345228A1
公开(公告)日：2020-11-05
申请号：US16913308
申请日：2020-06-26
发明人： Ralf EBERSBACH , Martin HACKER , Gerard ANTKOWIAK , Peter KLOPFLEISCH , Ferid BAJRAMOVIC , Tobias BÜHREN , Matthias REICH
摘要： A device for determining biometric variables of the eye, as are incorporated in the calculation of intraocular lenses including a multi-point keratometer and an OCT arrangement. The keratometer measurement points are illuminated telecentrically and detected telecentrically and the OCT arrangement is designed as a laterally scanning swept-source system with a detection region detecting the whole eye over the whole axial length thereof. The multi-point keratometer ensures that a sufficient number of keratometer points are available for measuring the corneal surface. By contrast, telecentricity ensures that the positioning inadequacies of the measuring instrument in relation to the eye to be measured do not lead to a local mismatch of the reflection points. The swept-source OCT scan detects the whole eye over the length thereof so that both anterior chamber structures and retina structures can be detected and a consistent whole eye image can be realized.
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