Array LED UV Modules

How to Choose the Right Array LED UV Module

1. Define the Application

Identify the intended industrial process before selecting an Array LED UV Module:

• UV Curing: Curing of compatible inks, coatings, and adhesives used in industrial manufacturing and packaging.
• UV Printing: Integration into printing systems requiring consistent UV exposure across wider working areas.
• PCB Processing: UV exposure and curing of compatible coatings and photo-sensitive materials.
• Fluorescence Excitation: Integration into industrial fluorescence inspection and quality control systems where the selected wavelength is suitable.
• Automated Manufacturing: Custom UV illumination for conveyor-based processing and industrial equipment integration.

Each application requires a suitable combination of wavelength, irradiance, exposure area, and thermal management.

2. The Right Wavelength

Select the wavelength according to the absorption characteristics of the material and the required process conditions. UV output, irradiation uniformity, and exposure time should also be considered to achieve consistent results.

3. Measurement of Total Radiant Power as an Output

Optical power settings can be set to high (W or mW/cm²) to enable quicker and deeper curing along with stronger fluorescence.

Make sure to check for uniform intensity across the array to confirm consistent performance.

For curing, typical targets are:

• Greater than 1,000 mW/cm² for high-speed production lines for laser-processed products.

• 300 – 800 mW/cm² for general or slower curing applications.

4. Spatial Characteristics and Geometric Configuration of the Radiation Source

• Linear Arrays: Suitable for curing by conveyor and for strip inspection.

• Matrix Arrays: Suitable for broad area curing and panel exposure.

Make certain that the active emitting area conforms with your part or inspection surface.

If scalability is required, consider modular stacking.

5. Thermal Management System

• Passive cooling is applicable for low-power modules (limited range).

• Active air-cooled is common in mid-power applications.

• Water cooled is best for high intensity continuous duty cycle operation.

Look for aluminum MCPCB, heat sinks or components with integrated fans.

6. Electrical Interface

Confirm:

• Input voltage (12V, 24V, or 48V DC)

• Current draw requirements

• Need for constant current driver

• Included drivers versus need for external control units

7. Control and Integration

Look for:

• PWM dimming or other forms of dimming control

• Trigger/sync inputs for automation

• Digital interfaces like RS485, CAN or MODBUS in higher-level systems

8. Product Robustness and Lifetime

High output power UV LEDs from reputable manufacturers should have:

• 10,000–50,000 hours lifespan

• LM-80 testing or MTTF data

• Dust, humidity, or water resistant enclosures with an IP rating.

9. Additional Options

Changeable optics such as:

• Lenses, diffusers, reflectors

• UV-pass filters for blocking non-target wavelengths

• Calibration for uniformity or spectral binning over-calibration

• Protection against overheating and diagnostics on-board

Summary Checklist