News

In recent years, the application of LED UV curing lamps has spread rapidly across various manufacturing industries. Compared with traditional mercury lamps, they feature a relatively cold light source, hence also being called LED UV cold light source curing lamps. In fact, the surface of LED UV curing equipment is not completely temperature-free. The surface temperature of the LED UV cold light source is just relatively low, and it still generates heat during use. The “cold light source” we usually refer to does not mean no heat is produced during illumination; instead, it means the illumination method does not involve converting thermal energy into light energy.

1.Cold Light Source Curing Lamp
Light sources are categorized into cold light sources and heat light sources based on their illumination methods. LED UV curing lamps, which can convert electrical energy directly into ultraviolet light, are typical cold light sources. In contrast, devices that first convert electrical energy into thermal energy and then convert thermal energy into light energy are called heat light sources. LED UV curing light sources also generate heat during illumination. Due to their high light radiation density and high energy content, they do have a certain temperature. However, the temperature generated during operation is not higher than the ambient temperature, so they are generally referred to as “cold light sources”.

2.Cooling Methods for LED UV Curing Equipment
LED UV curing equipment adopts two cooling methods: air cooling and water cooling. Compared with traditional mercury lamps, LED UV curing light sources emit no infrared rays and have no infrared thermal radiation. This results in a small temperature rise on the surface of the irradiated material, preventing heat-sensitive materials from deforming due to excessive temperatures and increasing the product qualification rate. The use of LED UV cold light source curing technology can well meet the adhesion and curing process requirements of heat-sensitive, high-precision products such as plastic substrates, lens bonding, electronic products, and optical fibers.