Technology — LED Module
Light begins at the chip.
Every LED chip in VALDUR is bin-sorted, thermally referenced, and tested to international service life standards. The result is a light output that stays consistent across thousands of luminaires — and across decades of service.
Bin Sorting
The same light, luminaire after luminaire.
The manufacturing process for LED chips produces natural variation in luminous flux, forward voltage, and colour temperature between individual diodes. For a road with 50 columns to read as uniformly lit — rather than a patchwork of warmer and cooler whites — the chips must be sorted, or “binned”, within close tolerances before assembly.
VALDUR LED modules are held to a binning tolerance within the industry standard for colour consistency — typically ≤3 SDCM (MacAdam ellipses) — which means luminaires ordered in separate batches over several years still match each other visually when installed along the same route.
Colour Temperature
The right light tone for every environment.
2200 K
Extra warm white — coastal, urban, and residential environments
2700 K
Warm white — residential streets, parks, and squares
3000 K
Warm white — modern street lighting, car parks, and town centres
4000 K
Neutral white — high-traffic roads, industrial areas, and busy car parks
Amber/Bio
1900–3000 K — nature reserves, wildlife corridors, and dark-sky areas
5000 K
Daylight — specialist applications
SPECTRE-Y
4000 K LED → ~2500 K — high luminous flux with reduced blue light content
The Amber/Bio variant differs from the standard range by offering a colour temperature of 1900–3000 K with significantly reduced blue-light content, rather than a conventional white CCT. The lower blue-light fraction causes substantially less disruption to the circadian rhythms of most nocturnal species, making it the preferred choice for installations in or adjacent to Natura 2000 areas and other protected natural environments.
Service Life
What does L90/B10 mean?
LED modules do not fail in the same way as a conventional light source — they gradually lose luminous flux over time, a process called lumen maintenance. L90 means that luminous flux is still at least 90 % of its original value. B10 indicates that the specification applies to 90 % of the population of devices — that is, no more than 10 % of units may have fallen below 90 % output by the stated operating hours.
VALDUR LED modules are rated for L90/B10 at over 100,000 hours of operation — equivalent to more than 27 years at a typical street lighting night-time operating pattern.
Test Methodology
LM-80 and TM-21.
Service life values for LEDs cannot simply be obtained by running the product for 100,000 hours before release. The industry instead uses IES LM-80, which measures actual lumen maintenance over a minimum 6,000-hour test run at several temperatures, and IES TM-21, which extrapolates this measured data into a statistically grounded projection of long-term performance.
This is the same methodology that underpins service life specifications from all credible LED manufacturers, and makes the figures directly comparable between suppliers.
Key Data
LED module in VALDUR — summary
| Parameter | Value |
|---|---|
| Service life | >100,000 h (L90/B10) |
| Luminous efficacy | 150 – 176 lm/W |
| Colour temperature (CCT) | 2200 / 2700 / 3000 / 4000 / 5000 K · Amber/Bio 1900–3000 K · SPECTRE-Y ~2500 K |
| Colour rendering (CRI) | Ra ≥ 70 (standard) / Ra ≥ 80 (option) |
| Binning tolerance | ≤ 3 SDCM |
| Test methodology | IES LM-80 / TM-21 |
Standards
Relevant standards for LED modules
IEC 62717
Performance requirements for LED modules in general lighting.
IES LM-80-08
Measurement method for lumen maintenance of LED light sources.
IES TM-21-11
Method for projecting long-term lumen maintenance from LM-80 data.
EN 62471
Photobiological safety — blue-light hazard assessment.
Frequently Asked Questions
About LED modules
What does L90/B10 mean?
L90 indicates that luminous flux is still at least 90 % of its original value. B10 indicates that the specification applies statistically to 90 % of the luminaire population — meaning at most 10 % may fall below that level at the stated operating hours.
Why is there an Amber/Bio variant with reduced blue-light content?
To minimise impact on nocturnal wildlife in nature reserves and coastal environments. The Amber/Bio variant offers 1900–3000 K with significantly reduced blue-light content, which causes substantially less disruption to circadian rhythms than white light with higher blue-light proportions.
What is the difference between Ra70 and Ra80?
CRI (Ra) measures how accurately a light source renders colours compared with daylight. Ra80 is often justified in environments with significant pedestrian and cycling activity where facial recognition and pedestrian safety carry more weight, whilst Ra70 is sufficient on dedicated through-roads.
How is consistent colour temperature ensured between luminaires in the same installation?
Through bin sorting within a close tolerance band — typically ≤3 SDCM — which ensures that even deliveries ordered several years apart still match visually when installed along the same route.
Is blue-light content a concern for outdoor lighting?
VALDUR LED modules are classified within safe limits under EN 62471. For environments with heightened sensitivity to blue light — such as nature reserves — the warmer CCT options or the Amber/Bio variant are recommended.
Read Further
Related technologies
Next Step
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