Laser Auto Focus System

Capacitive sensing & stepper motor system for real-time laser focal distance tracking — accuracy ±0.0005" @ 1.0"/sec

Overview

The Laser Track auto focus system maintains a preset focal distance by tracking the profile of a target object using capacitive sensing.

This microprocessor-based system uses a stepper motor linear actuator integrated into the gas jet / lens assembly of a laser beam delivery system.

The auto-focus assembly is positioned to the proper focal distance via a keypad/display using the jog function. Once a focal distance is established, the system is calibrated to this position using the calibrate function.

The system is then ready to track the profile of the target object in real time.

Specifications

System Name	Laser Track Auto Focus System
Sensing Method	Capacitive sensing
Actuator	Stepper motor linear actuator
Integration	Gas jet / lens assembly of laser beam delivery system
Control Type	Microprocessor-based
Operator Interface	Keypad / display with jog and calibrate functions
Tracking	Real-time target profile tracking
Typical Accuracy	±0.0005" @ 1.0"/sec rate of change
System Components	Keyboard/display, system controller, auto-focus assembly

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