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FAQ of Products
- What should be considered when selecting an LED light source ?
- What kind of cooling solution do I need for operating UV LEDs ?
- What is the difference between SMD and COB UV LEDs?
- What are the advantages & disadvantages of UV LEDs ?
- What are the differences between UV lamps and UV LEDs ?
- Understanding UV LED Technology: How It Works ?
What should be considered when selecting an LED light source ?
Substrate(s), adhesive, dispense methodology, and curing approach should all be considered. To implement LED curing technology into any application, it is important to determine if all the components are optimized with one another. As many manufacturers have experienced, simply inserting LED curing into an already existing process is not a guarantee of success. This assumption of interchangeable parts can result in frustrating performance failures that ultimately cost manufacturers time and money. To yield the required performance characteristics from the adhesive, it is essential to match the wavelength of the LED lamp with the absorption spectrum of the light-curable materials (LCM) photoinitiator in the adhesive. This successful pairing is dependent upon having an optimized solution in which a cohesive combination of compatible LCM and LED curing system is established.
To understand more about changing over to LED curing, visit our Resource Library to obtain a copy of the white paper, “Ensuring Success When Switching from Conventional Lamp to LED Light Curing Sources.”
What kind of cooling solution do I need for operating UV LEDs ?
A proper cooling solution such as a heatsink is critical for operating UV LEDs. UV LEDs dissipate heat through the backside, so it is important to have a suitable cooling solution with good thermal dissipation made from materials such as copper or aluminum and to apply thermal interface material between the LED and heatsink. UV LEDs with lower power consumption can be passively cooled through convection with heatsinks. High power UV LEDs with high electrical consumption may require fan-cooled heatsinks.
Finally, liquid cooling is recommended for high power UV LEDs that cannot be cooled with forced convection from fans. Please contact the Violumas team to learn more about designing an appropriate heatsink for your specific application.
What is the difference between SMD and COB UV LEDs?
Surface Mount Device (SMD) LEDs are commonly available, square packages of LED chips available in compact form factors ranging from 3x3mm to 6x6mm. SMD UV LEDs need to be mounted to PCBs or MCPCBs to be powered on. A more recent development in LED packaging is the Chip-On-Board (COB) LED, which consist of LED chips directly mounted onto the PCB or MCPCB for improved heat dissipation. COBs do not require additional MCPCBs and can offer high density, flexible arrangements of LED die.
What are the advantages & disadvantages of UV LEDs ?
The advantages of UV LEDs are instant turn on/off with no cooldown period, narrowband radiation, reduced heat generation, longer lifetime, smaller form factor, lower power consumption, and no presence of mercury. Disadvantages of UV LEDs are the low efficiency in certain wavelengths (UVC range) and high pricing.
What are the differences between UV lamps and UV LEDs ?
UV lamps utilize bulbs containing mercury vapor to emit broadband UV radiation. There are low-pressure UV lamps and medium-pressure UV lamps, which both use mercury but differ in the ionization and pressure of the mercury. UV LEDs are diodes that are grown from InGaN or AlGaN templates on sapphire. UV LEDs emit narrowband UV radiation and contain no mercury.
Understanding UV LED Technology: How It Works ?
Jan, 2025 - by CMI
The ultraviolet light-emitting technology has dominated the market and promoted the shift toward using more environmentally friendly alternatives than the mercury lamps, which are both
traditional and vintage, just as LED technologies have done with the UV lamps. The growing demand for UV light over the years has greatly boosted the worldwide UV LED market; it
generated an approximate earning of 787.9 million, and the rate at which it is predicted to continue growing is at an astounding rate of 21.5% between the time frames of 2022 and its
expected end in 2030. I decided to write this blog to dissect what LED technology is, how it operates, and what its technological advantages are.
Let’s Start With The Basics: What Is UV LED Technology?
To put it simply, UV LED, also called ultraviolet light-emitting diode, is UV light-generated solid-state devices that work by allowing an electrical current to travel through them, thus causing
them to emit light. Unlike the traditional mercury lamps, UK UV LEDs end up being so much more energy efficient as they don’t require gas or heat to emit light; moreover, they are deemed
safer with a wider application range.
Understanding the Working Mechanism: How do UV LEDs work?
Almost all ultraviolet LEDs work using almost the same basic mechanism, which is electroluminescence with the use of semiconductors: When electricity flows through a semiconductor,
electron material assembly, through a process in which photons are emitted, comes into play, and UV light eventually comes out as a result. This is a more modern and evolved version of
previously used UV lamps, as unlike them that require mercury gas, UK UV LEDs do not.
Ultraviolet wavelengths of light can be emitted by ultraviolet light-emitting diodes (UV LEDs) that are composed of either aluminum gallium nitride or gallium nitride. UV LEDs are able to
emit UVA, UVB, or UVC lighting based on their individualized construction and materials.
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