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UV Curing-System

research and development

What is UV LED?

Conventional UV lamps, including mercury lamps, use only about 20% of the curing energy in the curing reaction, with the remainder resulting in the release of heat and harmful mercury gases and UVC infrared radiation.
In the case of UV LED curing, light is generated through currents flowing between semiconductor integrated devices, most of the energy is used for curing, less heat generation than conventional methods, and curing with less power usage (20% of mercury-based lamp).

With the development of various photo-initiators and additives that can be used effectively in today’s UV LED control technology, you can take advantage of UV LED curing technology in many more industries.

In the field of BLU, lighting, automobile, etc., the use of visible light LED is increasing rapidly, and UV LEDs are also being used in place of existing mercury and metal halide UV lamps due to high efficiency and high output.


Advantages of UV LED

In case of existing UV lamps, as there is a problem of rise in temperature of irradiation surface due to radiant heat, it requires either placing a certain distance between the UV lamp and the irradiation surface or adjusting the temperature of irradiation surface.

For UV LED’s, it is possible to reduce the distance from the light source closer because there is less radiation heat.

UV LED’s have more advantages over traditional UV lamps, including mercury ones. Most UV LEDs can be used with commercial power source and absolutely reduce energy consumption. It can be turned on and off instantly, and doesn’t require continuous operation while not in use unlike mercury UV lamps. Mercury lamps also generate ozone and it must be removed. This causes a lot of additional energy consumption and costs such as need for air purification vents.

On the other hand, LED does not generate ozone. The life of a mercury lamp is generally around 2,000 hours. However, an LED can be used for more than 10 years when it is used continuously for 8 hours a day on and off. LED also has a strong advantage of small form factor. UV LED’s are much smaller than conventional mercury UV lamps, giving them the versatility and flexibility of designing any UV applications.


Comparison Characteristics of
UV LED and Mercury UV Lamp

UV LED is environment-friendly because mercury is not used, and it has advantages such as long life, energy saving and little heat generation.

 UV LED Classification Mercury UV Lamp
 New, Light, Simple, Compact  Technology  Old,Bulky,Heavy,Complex
 10,000-50,000 hours  Life Time  2,000-10,000 hours
Low  Energy Consumption  High
Zero Warm-up time  Slow
Does not: require mercury & generate ozone Environmental Friendliness Mercury usage generates ozone
Low Heat generation High
Unlimited designs possible Emission Wavelength Limited by mercury emission properties
 None Heavy Metals Mercury (20 – 200 mg)

UV LED Wavelength

UV LED’s are classified in many ways depending on the spectrum.

To introduce one of these methods, according to ISO-DIS-21348, an ISO classification standard regarding sun rays, it is divided into UVA (400 ~ 315nm), NUV (400 ~ 300nm), UVB (315 ~ 280nm) and UVC (280 ~ 100nm).

Classification Wavelength Description
 Near UV  UV-A  315-400 Curing of polymer or print ink, gas measurement, nitrogen element measurement, bug collector, illumination, optical sense, image color measurement ID, counterfeit detection, etc.
 UV-B  280-315  Curing, optical therapy, optical sense, image color measurement, crime analysis, protein analysis, DNA sequencing, drug development, etc.
 Deep UV  UV-C  100-280 Sterilization, ozone detection, surface or water decontamination, protein analysis, DNA sequencing, drug development, optical sensing, image color measurement, etc

UV LED

UVC-X type Spcification
  • Wave Length(nm) : 365, 385, 390
  • Irradiance Area : 305 x 360mm^2
  • Irradiance Dstance : Top 80mm, Bottom 40mm
  • LED Intensity (Watt) : 320Watt (20W ± 16ea)
  • Test Spectrometer : Not yet Defined