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公开(公告)号：US10054420B2
公开(公告)日：2018-08-21
申请号：US15793177
申请日：2017-10-25
Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
Inventor： Mark E. Froggatt , Alexander K. Sang , Dawn K. Gifford , Justin W. Klein
CPC classification number: G01B9/0207 , G01B9/02004 , G01B9/02069 , G01B9/02072 , G01B9/02076 , G01B9/02083 , G01B9/0209 , G01B11/0658 , G01B11/18 , G01D5/35329 , G01D5/35358 , G01D5/3537 , G01L1/242 , G01M11/3172
Abstract: An optical interrogation system, e.g., an OFDR-based system, measures local changes of index of refraction of a sensing light guide subjected to a time-varying disturbance. Interferometric measurement signals detected for a length of the sensing light guide are transformed into the spectral domain. A time varying signal is determined from the transformed interferometric measurement data set. A compensating signal is determined from the time varying signal which is used to compensate the interferometric measurement data set for the time-varying disturbance. The compensation technique may be applied along the length of the light guide.
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12.发明授权公开(公告)号：US09784569B2
公开(公告)日：2017-10-10
申请号：US14326004
申请日：2014-07-08
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen Tod Kreger
CPC classification number: G01B11/24 , G01B11/16 , G01B11/168 , G01B11/18 , G01L1/242 , G01L1/246 , G02B6/02042
Abstract: An accurate measurement method and apparatus using an optical fiber are disclosed. A total change in optical length in an optical core in the optical fiber is determined that reflects an accumulation of all of the changes in optical length for multiple segment lengths of the optical core up to a point on the optical fiber. The total change in optical length in the optical core is provided for calculation of an average strain over a length of the optical core based on the detected total change in optical length.
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公开(公告)号：US12235095B2
公开(公告)日：2025-02-25
申请号：US18382315
申请日：2023-10-20
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
Abstract: To sense the shape of a multicore optical fiber sensor, light reflected in a center and two or more helixed outer cores of the optical fiber sensor is measured, and phases associated with strain in the center and helixed outer cores is tracked along the length of the fiber sensor. Further, a wobble signal indicative of a variation in the spin rate of the fiber sensor is determined. Based on the tracked phases and the wobble signal, the fiber shape is computed.
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14.发明授权公开(公告)号：US11473902B2
公开(公告)日：2022-10-18
申请号：US17142634
申请日：2021-01-06
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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15.发明申请公开(公告)号：US20210131796A1
公开(公告)日：2021-05-06
申请号：US17142634
申请日：2021-01-06
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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Patent Agency Ranking
公开(公告)号：US09772176B2
公开(公告)日：2017-09-26
申请号：US14897973
申请日：2014-06-10
Applicant: INTUITIVE SURGICAL OPERATIONS, INC.
Inventor： Mark E. Froggatt , Justin W. Klein
CPC classification number: G01B9/02002 , G01B9/02004 , G01B9/02044 , G01B11/161 , G01B11/18 , G01D5/35316 , G01M11/3172 , G02B6/02042 , G02B6/02085 , G02B6/02114 , G02B6/02123 , G02B2006/02157
Abstract: An optical sensor includes an optical fiber inscribed with a repeated refraction pattern such that light scattered from a location on the optical fiber is scattered at multiple frequencies in a range of frequencies. The inscribed patterns overlap at every measurement point along at least a portion of the length of the sensor. An optical sensing system including control circuitry coupled to the optical fiber detects measurement scatter data from the optical fiber over the range of frequencies, determines a change in the detected measurement scatter data over the range of frequencies, and extracts a parameter describing a state of the optical fiber from the determined change in the detected measurement scatter data. The sensor may be made by inscribing a first light refracting pattern on the optical fiber at every measurement point along at least a portion of the length of the sensor and inscribing a second light refracting pattern on the optical fiber that overlaps the first inscribed light refracting pattern at every measurement point along at least that portion of the length of the sensor.
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17.发明授权公开(公告)号：US11828586B2
公开(公告)日：2023-11-28
申请号：US17894718
申请日：2022-08-24
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
CPC classification number: G01B11/24 , G01B11/16 , G01B11/168 , G01B11/18 , G01L1/242 , G01M11/025 , G01M11/31 , G01M11/3172 , G01M11/3181 , G01L1/246 , G02B6/02042
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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18.发明申请公开(公告)号：US20220404144A1
公开(公告)日：2022-12-22
申请号：US17894718
申请日：2022-08-24
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T. Kreger
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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公开(公告)号：US11193751B2
公开(公告)日：2021-12-07
申请号：US16044559
申请日：2018-07-25
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Alexander K. Sang , Dawn K. Gifford , Justin W. Klein
Abstract: Interferometric measurement signals are detected by a single optical interferometric interrogator for a length of a sensing light guide and an interferometric measurement data set corresponding to the interferometric measurement signals is generated. The interferometric measurement data set is transformed into a spectral domain to produce a transformed interferometric measurement data set. The transformed interferometric measurement data set is compared to a baseline interferometric data set to identify a time-varying signal corresponding to a time-varying disturbance. The baseline interferometric data set is representative of the sensing light guide not being subjected to the time-varying disturbance. A compensating signal is determined from the time-varying signal and used to compensate at least a portion of the interferometric measurement data set for the time-varying disturbance as part of producing a measurement of the parameter.
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20.发明授权公开(公告)号：US10739129B2
公开(公告)日：2020-08-11
申请号：US16723824
申请日：2019-12-20
Applicant: Intuitive Surgical Operations, Inc.
Inventor： Mark E. Froggatt , Justin W. Klein , Dawn K. Gifford , Stephen T Kreger
Abstract: A multi-core fiber includes multiple optical cores, and for each different core of a set of different cores of the multiple optical cores, a total change in optical length is detected. The total change in optical length represents an accumulation of all changes in optical length for multiple segments of that different core up to a point on the multi-core fiber. A difference is determined between the total changes in optical length for cores of the set of different cores. A twist parameter and/or a bend angle associated with the multi-core fiber at the point on the multi-core fiber is/are determined based on the difference.
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