UV-LED light sources and UV-LED emitters from 365 to 450 nm
UV-LED light sources produce defined emission bands for laboratory and industrial processes. The range comprises spot, line and area emitters as well as controllable systems at selected wavelengths from 365 to 450 nm. The selection is governed not only by peak wavelength and electrical power, but by irradiance at the working distance, uniformity, irradiated area, cooling and control.
The product families at a glance
| Product family | Design | Typical use | Control |
|---|---|---|---|
| UV-LED series L | Area emitter, air-cooled | Web lines and large areas | LedControl Touch, LedControl S or LedControl DC |
| UV-LED area emitter SFL | Area emitter up into the kilowatt range | Large-area curing at high throughput | LedControl Touch, LedControl S or LedControl DC |
| UV-LED Spot P | Spot source, focused | Spot bonding and small joints | LedControl Touch, LedControl S or LedControl DC |
| UV-LED solo P | Compact entry-level solution | Simple spot applications | Basic control, only On / Off |
| UV-LED special solutions | Adapted to installation space and area | Retrofitting existing equipment | Project-specific |
Available wavelengths are 365, 385, 395, 405 and 450 nm; combining two wavelengths is possible. For controlling the area emitters, the LedControl S is available as a benchtop unit and the LedControl DC for DIN rail mounting and integration into a PLC.
Where the appropriate wavelength is still open, trials in our LED irradiation chambers are possible. Irradiance during the running process can be monitored with UV meters and radiometers.
UV-LED LedControl Touch
UV-LED controller with touch display: up to four LED outputs, dimming 2 to 100 %, Modbus RTU and ASCII.
Large area UV-LEDs
Water-cooled UV-LED area light source SFL with high irradiance for large-area curing.
UV-LED LedControl DC
UV-LED controller for safety-related shutdown up to Performance Level e (Category 4) and SIL 3.
Customized UV-LEDs
Customer-specific UV-LED lamps built from standard modules, adapted to installation space and area.
UV LED or UV lamp?
UV-LED systems switch quickly and integrate readily into a process. Compared with broadband UV lamps they have a narrower emission band, so the peak wavelength has to match the absorption range of the material. Lamp systems can still make sense where a broad spectrum or very large irradiation fields are needed.
In practice the two differ above all in heat input: UV lamps radiate a substantial infrared component as well, whereas LEDs dissipate their losses through a heat sink or water cooling. Heat input at the part is therefore lower, but not negligible – irradiances of several W/cm² heat the irradiated material noticeably.
The decision is therefore made on process spectrum, area, working distance, uniformity, cycle time and thermal load. Semiconductor design, efficiency, binning and service life are covered under UVA, UVB and UVC LED technology.
UV LED light sources from Opsytec are used in photochemistry, photobiology and materials research. Most recently published:
- Azidocoumarin Glycan Probes for Photoinduced Cross-Linking and In Situ Fluorescent Labeling — Jahnke, N.; Driessen, M. D.; Partalidou, G. et al. · Bioconjugate Chemistry · 2026
- Chlorine atom diffusion and reactivity in solid parahydrogen at 1.6–4.3 K — Muddasser, I.; Nguyen, A. H. M.; Gyamfi, E. et al. · The Journal of Chemical Physics · 2026
- Development of a human-derived bioink based on keratin methacrylate for corneal bioprinting — Balters, L.; Reichl, S. · Journal of Applied Biomaterials & Functional Materials · 2026
- Immobilization of Titanium Dioxide Ultrathin Films onto Porous Membranes via Atomic Layer Deposition for Photodegradation of Water‐Borne Pollutants — Maloda, E. M.; Nyarige, J. S.; Busko, D. et al. · ChemPhotoChem · 2026
- Photocurable Lignin Materials: Tuning Lignin Methacrylation to Tailor Photocuring Kinetics — Mhirsi, O.; Yapa, M.; Laborie, M. G. · Macromolecular Materials and Engineering · 2026
Further publications are listed in the publication finder.
The details come from Crossref. Authorship and content rest with the respective research groups.
These are the rules most often consulted in practice for UV LED light sources — from measurement through limits to the requirements on the device:
- DIN EN 62471:2009-03 — Photobiological safety of lamps and lamp systems
- DIN EN ISO 3059 — Non-destructive testing — Penetrant testing and magnetic particle testing — Viewing conditions
- ASTM E1417/E1417M — Standard Practice for Liquid Penetrant Testing
All rules for UV LED light sources are listed in the standards finder.
Not a normative reference. What counts is always the currently valid edition in the original text.
Spectra of the UV-LED light sources
Every Opsytec UV-LED emitter is available at 365, 385, 395, 405 and 450 nm. The figure shows the measured emission bands, each normalised to its own maximum: narrow, with a half width of 10 to 20 nm and without an infrared component. That is where they differ fundamentally from the pressure-broadened line spectrum of a mercury lamp. Two wavelengths can be combined in one system and mixed over separate channels.
