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Method, device and oct system for controlling polarization controller by potentiometer

A polarization controller and polarization control technology, applied in the field of OCT system, can solve the problems of complicated communication mode of the drive module, increased instability, unintuitive operation, etc., achieve simple and intuitive operation, ensure reliability and stability, and be easy to operate The effect of the operation

Active Publication Date: 2017-01-11
SHENZHEN CERTAINN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional equipment uses computer software to control the motor drive module to achieve indirect control of the polarization controller, but the disadvantage is that the communication mode of the drive module is complicated, the line is long, and the instability is increased
Another disadvantage is that the operation via software control is not intuitive

Method used

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  • Method, device and oct system for controlling polarization controller by potentiometer
  • Method, device and oct system for controlling polarization controller by potentiometer

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Embodiment Construction

[0039] The embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary, and is not intended to limit the scope of the present invention and its application.

[0040] See figure 1 In one embodiment, a method for controlling a polarization controller through a potentiometer, the polarization controller uses a stepping motor as a drive motor for adjusting the polarization control angle, and controls the motor by adjusting the resistance value of the potentiometer The adjustable resistance value of the potentiometer and the adjustable deflection angle of the motor are set in a one-to-one correspondence with a positive correlation. The potentiometer can be a rotary potentiometer, and the resistance value can be adjusted by rotating the knob of the potentiometer. The method includes a system initialization process and a system self-correcting operation process.

[0041] During the system initialization...

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Abstract

The invention discloses a method and device for controlling a polarization controller through a potentiometer. According to the polarization controller, a stepping motor serves as a driving motor for adjusting the polarization control angle, the deflection angle of the motor is controlled by adjusting the resistance value of the potentiometer, and the adjustable resistance value of the potentiometer and the adjustable deflection angle of the motor are set to have a positively-related one-to-one correspondence relation. The method includes a system initialization process and a system self-correction operation process. The invention further discloses an OCT system with the device. Through a fault-tolerant mechanism, deflection errors of the motor can be found and corrected in time, and the situation that due to possible step-out of the stepping motor, errors of the correspondence relation between deflection of the motor and resistance variation of the potentiometer are caused is prevented.

Description

Technical field [0001] The invention relates to a method for controlling a polarization controller through a potentiometer, a device for controlling the polarization controller through a potentiometer, and an OCT system with the device. Background technique [0002] Light interference needs to meet the three conditions of the optical path difference of the two beams within the coherence length, a fixed phase difference and the same polarization state. In the OCT system, a polarization controller can be added to the sample arm to change the polarization state of the light in the sample arm fiber, so as to be as close as possible to the polarization state of the reference arm light to obtain the maximum interference signal intensity. The polarization controller can change the polarization state of the light propagating in the fiber by changing the angle of the fiber wound into a loop. Usually the polarization controller is hidden inside the device, so the angle of the fiber ring n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/10A61B3/12
CPCA61B3/102A61B3/1225
Inventor 代祥松王辉
Owner SHENZHEN CERTAINN TECH CO LTD
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