公开(公告)号：WO2021181229A1

公开(公告)日：2021-09-16

申请号：PCT/IB2021/051850

申请日：2021-03-05

Applicant: ALCON INC.

Inventor： JUNG, David ,  LEE, Jason L.

IPC: H05B45/20 ,  H05B45/395 ,  H05B45/34

Abstract: Systems and methods are disclosed for controlled illumination of LEDs. An example system comprises: a plurality of LEDs; an LED controller; a current buffer adapted to receive an input bias level signal from the LED controller, wherein a set of LEDs to be controlled together are connected in parallel with each other in a circuit with the current buffer; and at least one current limiting resistor connected in the circuit with the plurality of LEDs and the current buffer. The systems and methods are adapted to control the illumination of the LEDs by applying a constant voltage to the circuit based upon the input bias level signal, thereby controlling the illumination of the light-emitting diodes without the use of pulse width modulation. Crosstalk interference with RFID components due to pulse width modulation is thereby avoided.

公开(公告)号：WO2022238828A1

公开(公告)日：2022-11-17

申请号：PCT/IB2022/054182

申请日：2022-05-05

Applicant: ALCON INC.

Inventor： JUNG, David ,  CASTRO, Daniel ,  BOR, Zsolt ,  STEWART, Corey ,  LEE, Billy

IPC: A61F9/008 ,  A61B18/203 ,  A61B2018/20359 ,  A61B2018/20554 ,  G02F1/133638 ,  G03F7/70041

Abstract: Systems and methods are disclosed for selectively allowing or preventing output of laser pulses. In some embodiments, a laser system comprises a shutter and a shutter motor. The shutter motor is configured to move the shutter in an alternating manner between a first position in which output of laser electromagnetic radiation is allowed a second position in which output of laser electromagnetic radiation is prevented.

公开(公告)号：WO2023062565A1

公开(公告)日：2023-04-20

申请号：PCT/IB2022/059796

申请日：2022-10-12

Applicant: ALCON INC.

Inventor： JUNG, David ,  OCHOA, Francisco Javier ,  CASTRO, Daniel ,  STEWART, Corey ,  WATANABE, Keith

IPC: A61F9/008

Abstract: Systems and methods are disclosed for dynamically controlling laser pulses being output from a laser system. An example surgical system comprises a laser, an optical switching device, an adjustable input device such as a foot pedal, and a laser pulse controller. An operator actuates the adjustable input device over an operating range to control dynamically the laser pulses being output from the laser system. In one mode, the adjustable input device may dynamically control output laser energy. In another mode, the adjustable input device may dynamically control selection of laser pulses to be output from the system.

公开(公告)号：WO2022234517A1

公开(公告)日：2022-11-10

申请号：PCT/IB2022/054175

申请日：2022-05-05

Applicant: ALCON INC.

Inventor： MALEK TABRIZI, Alireza ,  KHAZAEINEZHAD, Reza ,  APOSTOL, Adela ,  KARIM, John Hossein ,  CASTRO, Daniel ,  STEWART, Corey ,  JUNG, David

IPC: A61F9/008

Abstract: Systems and methods are disclosed for monitoring a laser system using detection of back reflection. In some embodiments, a laser system comprises a laser, at least one optical fiber, and a back-reflection monitoring sensor for detecting electromagnetic radiation reflected back from the optical fiber(s). The back-reflection monitoring sensor may be adapted to detect back-reflected electromagnetic radiation while the laser system is in use. The laser system may further comprise a computing system adapted to calculate an output power of the system based upon the back-reflected electromagnetic radiation. In some embodiments, a method of monitoring a laser system using detection of back reflection comprises transmitting electromagnetic radiation from a laser, receiving the electromagnetic radiation at one or more optical fibers, and detecting electromagnetic radiation that is back reflected at a back-reflection monitoring sensor.

公开(公告)号：WO2019171273A1

公开(公告)日：2019-09-12

申请号：PCT/IB2019/051770

申请日：2019-03-05

Applicant: ALCON INC.

Inventor： DELONG, Scott ,  JUNG, David

IPC: H03K5/1532

Abstract: In certain embodiments, a system for detecting a peak laser pulse includes a laser, a photodiode configured to detect pulses emitted by the laser, and circuitry for detecting a peak pulse timing of the laser. The circuitry is configured to receive a periodic series of voltage signals based on laser pulses detected by the photodiode, stretch the voltage signals, and obtain sampled voltages from the stretched voltage signals using periodic control signals. The circuitry is further configured to shift the timing of the periodic control signals, compare the sampled voltages for respective timings of the control signals, and select an optimal control signal timing based on the comparison.