UV Curing worked example

UV Dose Uniformity with minimum dose reading of 480 mJ / cm²: a worked example

This worked example runs the uv dose uniformity numbers for a tougher week than the baseline: minimum dose reading of 480 mJ / cm² instead of the typical 950 mJ / cm². Quantify UV dose uniformity across a work surface from radiometer pass min, max, and average - see whether the worst spot still cures.

The inputs for this scenario

  • Minimum dose reading (cold spot): 480 mJ / cm² (the input this scenario stresses; the baseline uses 950)
  • Maximum dose reading (hot spot): 1,450 mJ / cm² (held at the documented default)
  • Average dose across the cure surface: 1,200 mJ / cm² (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Spread = max dose − min dose (mJ/cm²).
  • Dose non-uniformity works out to 80.83 % non-uniformity at these inputs, and this is the headline figure for the scenario.
  • Dose spread (max − min) works out to 970 mJ / cm² at these inputs.
  • Minimum reading (cold spot) works out to 480 mJ / cm² at these inputs.
  • Maximum reading (hot spot) works out to 1,450 mJ / cm² at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where minimum dose reading sits at 950 mJ / cm² and the headline result is 41.67 % non-uniformity, this scenario comes in 94% above the baseline at 80.83 % non-uniformity.
  • Use it after a multi-point radiometer mapping pass on a new part fixture, a wider web, or after a lamp or reflector change to confirm even cure edge to edge. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Dose non-uniformity: 80.83 % non-uniformity (headline result)
  • Dose spread (max − min): 970 mJ / cm²
  • Minimum reading (cold spot): 480 mJ / cm²
  • Maximum reading (hot spot): 1,450 mJ / cm²

Run it with your numbers

  • To rerun this with your own numbers, open the live UV Dose Uniformity calculator, set minimum dose reading to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.