HALORED — LDT Length Scaler

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h m

Centre illuminance appears here

Centre illuminance (approximate)

Source file

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Length

New length (mm)

Scale factor

Output (editable)

Luminous flux (lm)

Power (W)

Product name

File name

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Photometry

C0–C180C90–C270

Centre illuminance

Distances (m)

E = I₀/d² on axis · Ø = beam Ø at 50% · E avg = beam flux ÷ lit area. Linear-luminaire point-source approximation.