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    Scan pattern and signal processing for optical coherence tomography
    24.
    发明授权
    Scan pattern and signal processing for optical coherence tomography 有权

    公开(公告)号：US12232810B2

    公开(公告)日：2025-02-25

    申请号：US18317549

    申请日：2023-05-15

    Applicant: ACUCELA INC.

    Inventor： Ryo Kubota ,  Stephan Wyder ,  Philip M. Buscemi ,  Matthias Pfister ,  Alexander Holzer

    IPC: A61B3/10 ,  A61B3/12 ,  G01B9/02004 ,  G01B9/02091

    Abstract: An OCT system for measuring a retina as part of an eye health monitoring and diagnosis system. The OCT system includes an OCT interferometer, where the interferometer comprises a light source or measurement beam and a scanner for moving the beam on the retina of a patient's eye, and a processor configured to execute instructions to cause the scanner to move the measurement beam on the retina in a scan pattern. The scan pattern is a continuous pattern that includes a plurality of lobes. The measurement beam may be caused to move on the retina by the motion of a mirror that intercepts and redirects the measurement beam. The mirror position may be altered by the application of a drive signal to one or more actuators that respond to the drive signal by rotating the mirror about an axis or axes.

    Axial length measurement monitor
    25.
    发明授权
    Axial length measurement monitor 有权

    公开(公告)号：US11779206B2

    公开(公告)日：2023-10-10

    申请号：US17936263

    申请日：2022-09-28

    Applicant: ACUCELA INC.

    Inventor： Ryo Kubota ,  Philip M. Buscemi ,  Matthias Pfister ,  Stephan Wyder ,  Amitava Gupta

    IPC: G01B9/02 ,  A61B3/10 ,  G01B9/02091

    CPC classification number: A61B3/102 ,  G01B9/02091 ,  G01B2290/45

    Abstract: An OCT axial length measurement device is configured to measure an area of the retina within a range from about 0.05 mm to about 2.0 mm. The area can be measured with a scanned measurement beam or plurality of substantially fixed measurement beams. The OCT measurement device may comprise a plurality of reference optical path lengths, in which a first optical path length corresponds to a first position of a cornea, and a second optical path length corresponds to a second position of the retina, in which the axial length is determined based on a difference between the first position and the second position. An axial length map can be generated to determine alignment of the eye with the measurement device and improve accuracy and repeatability of the measurements. In some embodiments, the OCT measurement device comprises a swept source vertical cavity surface emitting laser (“VCSEL”).

    Axial length measurement monitor
    28.
    发明授权
    Axial length measurement monitor 有权

    公开(公告)号：US11497396B2

    公开(公告)日：2022-11-15

    申请号：US17647585

    申请日：2022-01-10

    Applicant: ACUCELA INC.

    Inventor： Ryo Kubota ,  Philip M. Buscemi ,  Matthias Pfister ,  Stephan Wyder ,  Amitava Gupta

    IPC: G01B9/02 ,  A61B3/10 ,  G01B9/02091

    Abstract: An OCT axial length measurement device is configured to measure an area of the retina within a range from about 0.05 mm to about 2.0 mm. The area can be measured with a scanned measurement beam or plurality of substantially fixed measurement beams. The OCT measurement device may comprise a plurality of reference optical path lengths, in which a first optical path length corresponds to a first position of a cornea, and a second optical path length corresponds to a second position of the retina, in which the axial length is determined based on a difference between the first position and the second position. An axial length map can be generated to determine alignment of the eye with the measurement device and improve accuracy and repeatability of the measurements. In some embodiments, the OCT measurement device comprises a swept source vertical cavity surface emitting laser (“VCSEL”).

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