LX57 1200 mm LED linear light — IES file and lab test report
Everything a lighting designer needs to put the LX57 linear profile into DIALux evo or Relux, published without a signup wall: the original IESNA LM-63-2002 photometric file and the full 13-page EVERFINE goniophotometer test report measured on a 1.2 m, 40 W, 4000 K sample.
Free to use in your tender annexes and design reports. A credit link to led-project-light.com is all we ask.
Measured performance
| Model | LX57120-40W-4K (white finish) |
|---|---|
| Length | 1200 mm (1.2 m linear profile) |
| Nominal power | 40 W (measured 37.84 W) |
| Measured luminous flux | 5,127.3 lm |
| Luminaire efficacy | 135.48 lm/W (whole-fixture, not chip) |
| Correlated colour temperature | 4000 K |
| Peak intensity | 1,865 cd (C90, γ0°) |
| Beam angle | 109.3° (wide, diffuser optic) |
| Light distribution | CIE class DIRECT — 99.5 % downward flux |
| Power factor | 0.9722 @ 221.5 V / 50 Hz |
| Spacing criterion | S/MH 1.26 (C0/180), 1.24 (C90/270) |
| Test lab / system | EVERFINE GO-2000A goniophotometer, 25.3 °C / 65 % RH |
| Test date | 28 June 2025 |
All figures are read from the attached laboratory report — nothing is interpolated. Other lengths (600 mm, 1500 mm, 3000 mm), 3000 K / 3500 K / 5000 K versions, lens optics and DALI-2 or Casambi drivers are tested separately; ask us for the matching IES/LDT set.
What is in the test report
- Luminous intensity distribution diagram and full C0/C90/C180/C270 intensity table
- Zonal flux table (0–180° in 10° zones) and isocandela / isolux diagrams
- UGR table per CIE Pub. 117 and luminance limitation curves (45°–85°)
- Utilisation factors per DIN EN 13032-2 and CU / budgetary estimate diagram
- WEC / CCEC energy tables, LED average luminance report (GB/T 29293-2012)
- Planar illuminance curve and AAI figure with the 109.34° beam angle
How to use the IES file
- Import the .ies file into DIALux evo or Relux as a new luminaire.
- Keep the measured 37.84 W input power in your energy calculation, not the 40 W nominal figure — this is what an EN 12464-1 / EPBD energy check should be based on.
- For continuous runs, apply the spacing criterion (S/MH ≈ 1.25) to hold uniformity Uo ≥ 0.6 in office and education rooms.
- Send us the calculation and we will cross-check the result before you issue the tender.
Need other photometric files or a DIALux study?
Tell us the room list, ceiling height and target illuminance. We return a completed BOQ, the IES/LDT files for each type and an FOB Shenzhen price, usually within two working days.