Laser Engineering

Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator Calculator

Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator engineering calculator.

Quick Answer

Calculate Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator

Calculator

Thermal drift–induced beam pointing error (rad)
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Result Interpretation

Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator Calculator computes Thermal drift–induced beam pointing error in rad using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Effective optical lever arm length = 0.04
  • Galvo shaft length contributing to angular error = 0.02
  • Focal length of scan lens = 0.1
  • Temperature rise above ambient = 5
  • Galvo shaft thermal expansion coefficient = 1.2E-5
  • Mirror mount thermal expansion coefficient = 2.3E-5
  • Nominal galvo deflection angle = 0.349066

Expected Result:

  • Thermal drift–induced beam pointing error = 5.0367644844228E-5

Engineering Interpretation:

Under the given input conditions, the calculated result is: Thermal drift–induced beam pointing error = 5.0367644844228E-5 rad.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.

Formula / Method

thermal drift–induced beam pointing error = mirror mount thermal expansion coefficient * temperature rise above ambient * effective optical lever arm length / focal length of scan lens + galvo shaft thermal expansion coefficient * temperature rise above ambient * galvo shaft length contributing to angular error * tan(nominal galvo deflection angle) / focal length of scan lens

Formula family: formula_laser_galvo_scanner_thermal_drift_induced_beam_pointing_error_estimator

Variables

SymbolLabelRoleDescription
alpha_mirror Mirror mount thermal expansion coefficient INPUT Mirror mount thermal expansion coefficient
alpha_shaft Galvo shaft thermal expansion coefficient INPUT Galvo shaft thermal expansion coefficient
delta_T Temperature rise above ambient INPUT Temperature rise above ambient
L_arm Effective optical lever arm length INPUT Effective optical lever arm length
L_shaft Galvo shaft length contributing to angular error INPUT Galvo shaft length contributing to angular error
theta_nominal Nominal galvo deflection angle INPUT Nominal galvo deflection angle
d_focal Focal length of scan lens INPUT Focal length of scan lens
angular_beam_pointing_error Thermal drift–induced beam pointing error OUTPUT Thermal drift–induced beam pointing error

Calculation Steps

  1. Enter the mirror mount thermal expansion coefficient in 1/K.
  2. Enter the galvo shaft thermal expansion coefficient in 1/K.
  3. Enter the temperature rise above ambient in K.
  4. Enter the effective optical lever arm length in m.
  5. Enter the galvo shaft length contributing to angular error in m.
  6. Enter the nominal galvo deflection angle in rad.
  7. Enter the focal length of scan lens in m.
  8. Step 1: Compute thermal drift–induced beam pointing error.
  9. Read the thermal drift–induced beam pointing error (rad) from the results.

Engineering Summary

Calculate Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator

Frequently Asked Questions

What does this calculator calculate?

The Galvo Scanner Thermal Drift–Induced Beam Pointing Error Estimator Calculator estimates Thermal drift–induced beam pointing error based on the input parameters you provide

Why is mirror mount thermal expansion coefficient important in this calculation?

mirror mount thermal expansion coefficient is directly proportional to thermal drift–induced beam pointing error. When you enter mirror mount thermal expansion coefficient in 1/K, the calculator uses it in the engineering formula to compute the output

How should I interpret the result thermal drift–induced beam pointing error?

The calculator outputs thermal drift–induced beam pointing error in rad. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Mirror mount thermal expansion coefficient (1/K), Galvo shaft thermal expansion coefficient (1/K), Temperature rise above ambient (K), Effective optical lever arm length (m), Galvo shaft length contributing to angular error (m), Nominal galvo deflection angle (rad), Focal length of scan lens (m). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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