company news about UV-A LED Development Trends in 2025: Accelerated Replacement and Deep Integration

UV-A LEDs (primarily with wavelengths between 365 nm and 405 nm) hold the largest share of the UV LED market, with their core application being in curing. Looking ahead to 2025, the development of UV-A LEDs will demonstrate two key trends: accelerated replacement of traditional mercury lamps and deep integration into high-end manufacturing.

It is a global consensus that UV-A LEDs will replace traditional UV mercury lamps. Especially in the context of the Minamata Convention restricting the use of mercury, this trend will enter a period of full outbreak in 2025.

The optical output power and energy density of UV-A LEDs will continue to increase to meet the demand for faster curing in industrial applications. Higher power density means faster production cycles, offering a decisive advantage in high-volume production lines such as printing, coating, and bonding. Furthermore, a single wavelength is no longer the only solution. Future UV-A LED systems will generally utilize a combination of multiple wavelengths (such as 365 nm, 385 nm, and 405 nm). Different wavelengths of UV light penetrate to varying depths in the material being cured, achieving a synergistic effect between surface and deep-layer curing, ensuring a more thorough and reliable cure, thereby improving the reliability and performance of the cured material. Although the initial investment in UV LED equipment may be higher than that of mercury lamps, its total cost of ownership (TCO) advantages will become even more pronounced by 2025 due to its exceptionally long lifespan, energy savings (up to 50% or more), no need for preheating, zero maintenance costs, and no ozone generation, prompting more hesitant companies to switch to LED technology.

As the technology matures, UV-A LEDs are becoming not just replacements but enablers, enabling and optimizing new manufacturing processes.

UV-A LEDs are a key light source for stereolithography 3D printing (SLA/DLP/LCD). By 2025, as demands for printing precision and speed increase, the application of UV-A LEDs in 3D printing will mature further. LED arrays with higher beam uniformity will be pursued to ensure consistent curing across printed parts. LEDs' flexible wavelength output is better suited for new high-performance resin materials. Compact LED module designs are enabling even smaller and desktop-scale 3D printing equipment.

By 2025, UV-A LEDs will no longer be considered an optional technology but will become standard in curing and high-end manufacturing. Technology developments will focus on higher power, more wavelength combinations, and smarter system integration to support industry’s continued pursuit of efficiency, sustainability, and product quality.