CONTACT MANAGEMENT MODE FOR ROBOTIC IMAGING SYSTEM USING MULTIPLE SENSORS

    公开(公告)号:US20240066704A1

    公开(公告)日:2024-02-29

    申请号:US18457788

    申请日:2023-08-29

    Applicant: Alcon Inc.

    Inventor: Patrick Terry

    CPC classification number: B25J9/1674 A61B3/14 B25J13/025 B25J15/0019

    Abstract: A robotic imaging system includes a body with a head unit, a robotic arm and a coupling plate. A camera is positioned in the head unit and configured to record one or more images of a target site. The camera is operatively connected to one or more handles. A plurality of sensors is configured to transmit sensor data. The sensors include at least one primary sensor configured to detect respective force and/or respective torque applied at the body and at least one auxiliary sensor configured to detect the respective force and/or the respective torque applied at the one or more handles. A controller is configured to receive the sensor data and execute a contact management mode, including determining a contact location of the body with an external object based in part on the sensor data and determining a reverse trajectory for moving the body away from the contact location.

    ROBOTIC IMAGING SYSTEM WITH FORCE-BASED COLLISION AVOIDANCE MODE

    公开(公告)号:US20230278217A1

    公开(公告)日:2023-09-07

    申请号:US18112597

    申请日:2023-02-22

    Applicant: Alcon Inc.

    Inventor: Patrick Terry

    Abstract: A robotic imaging system includes a camera configured to obtain one or more images of a target site. A robotic arm is operatively connected to the camera, the robotic arm being adapted to selectively move the camera in a movement sequence. A force-based sensor is configured to detect and transmit sensor data related to at least one of force and/or torque imparted by a user for moving the camera. The system includes a controller configured to receive the sensor data. The controller has a processor and tangible, non-transitory memory on which instructions are recorded. The controller is adapted to selectively execute a collision avoidance mode, including applying a respective correction force to modify the movement sequence when the camera and/or the robotic arm enter a predefined buffer zone.

    STEREOSCOPIC IMAGING PLATFORM WITH TARGET LOCKING AUTOMATIC FOCUSING MODE

    公开(公告)号:US20220311946A1

    公开(公告)日:2022-09-29

    申请号:US17684810

    申请日:2022-03-02

    Applicant: ALCON INC.

    Abstract: A stereoscopic imaging platform includes a stereoscopic camera configured to record left and right images of a target site. A robotic arm is operatively connected to the stereoscopic camera, the robotic arm being adapted to selectively move the stereoscopic camera relative to the target. The stereoscopic camera includes a lens assembly having at least one lens and defining a working distance. The lens assembly has at least one focus motor adapted to move the at least one lens to selectively vary the working distance. A controller is adapted to selectively execute one or more automatic focusing modes for the stereoscopic camera. The controller has a processor and tangible, non-transitory memory on which instructions are recorded. The automatic focusing modes include a target locking mode. The target locking mode is adapted to maintain a focus of the at least one stereoscopic image while the robotic arm is moving the stereoscopic camera.

    Optical axis calibration of robotic camera system

    公开(公告)号:US12175556B2

    公开(公告)日:2024-12-24

    申请号:US17659123

    申请日:2022-04-13

    Applicant: Alcon Inc.

    Abstract: A method, instructions for which are executed from a computer-readable medium, calibrates a robotic camera system having a digital camera connected to an end-effector of a serial robot. The end-effector and camera move within a robot motion coordinate frame (“robot frame”). The method includes acquiring, using the camera, a reference image of a target object on an image plane having an optical coordinate frame, and receiving input signals, including a depth measurement and joint position signals. Separate roll and pitch offsets are determined of a target point within the reference image with respect to the robot frame while moving the robot. Offsets are also determined with respect to x, y, and z axes of the robot frame while moving the robot through another motion sequence. The offsets are stored in a transformation matrix, which is used to control the robot during subsequent operation of the camera system.

    STEREOSCOPIC IMAGING PLATFORM WITH TARGET LOCKING AUTOMATIC FOCUSING MODE

    公开(公告)号:US20240089616A1

    公开(公告)日:2024-03-14

    申请号:US18516011

    申请日:2023-11-21

    Applicant: ALCON INC.

    Abstract: A stereoscopic imaging platform includes a stereoscopic camera configured to record left and right images of a target site. A robotic arm is operatively connected to the stereoscopic camera, the robotic arm being adapted to selectively move the stereoscopic camera relative to the target. The stereoscopic camera includes a lens assembly having at least one lens and defining a working distance. The lens assembly has at least one focus motor adapted to move the at least one lens to selectively vary the working distance. A controller is adapted to selectively execute one or more automatic focusing modes for the stereoscopic camera. The controller has a processor and tangible, non-transitory memory on which instructions are recorded. The automatic focusing modes include a target locking mode. The target locking mode is adapted to maintain a focus of the at least one stereoscopic image while the robotic arm is moving the stereoscopic camera.

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