At our company, we specialize in designing and producing top-of-the-line UV systems that are tailored to meet the unique and specific requirements of each of our valued clients. We pride ourselves on utilizing only the highest quality materials and employing cutting-edge technology to ensure that our clients receive the very best in UV irradiation solutions.
With our forward-thinking mindset, creativity, extensive 20 years of experience in UV technology, and a dedicated team of competent and diligent engineers, our UV systems have received high acclaim for their exceptional performance. We ensure high UV output, perfectly even distribution of UV energy, and maximum cost-effectiveness to meet our clients’ unique requirements.
An effective and efficient UV system requires a high-quality irradiation unit that is capable of delivering UV energy to the irradiated surface in a cost-effective and efficient manner. The irradiation unit is a crucial unit of the system, responsible for the proper transmission, reflection, and refraction of the UV radiation. A well-designed and optimized irradiation unit uses reflectors to precisely focus the UV rays in the desired direction, enabling the system to achieve maximum performance.
We offer a variety of high-quality and efficient reflectors, including pure aluminum and silver-plated aluminum reflectors, as well as dichroic reflectors such as cold mirrors and cold metal mirrors. To reduce the heat transmitted to irradiated surface and consequently lower the surface temperature, we offer standard quartz plates, and also Infrared Ray Cut Filters to reflect IR while allowing UV to pass through.
The temperature of a UV lamp, when perfectly operating, is best maintained between 600°C and 900°C. At our company, we construct irradiation units with a perfectly matched and paired cooling unit to eliminate excess heat and prevent premature UV lamp failure due to overheating, while keeping the lamp at the optimum temperature. This is essential for prolonging the lamp’s lifespan.
Layout & Configuration of reflector types
We utilize the following reflector types and components for constructing our UV systems. Depending on our clients’ needs, other customized reflector types and components are also available.
| Cold mirror | The cold mirror is made of accurately-designed molded glass onto which several thin metallic compound layers are deposited. This mirror reflects ultraviolet rays effectively while visible and infrared rays, which rarely contribute to the curing process, pass through the material. |
| Dual cold mirrors | There are two pieces of cold mirrors. One has curved surface to reflect ultraviolet rays and let infrared rays and visible light pass through. The other has flat surface, which also reflects ultraviolet rays, and let infrared rays and visible light pass through. |
| Infrared ray cut filter | This component, which is specially coated, transmits the necessary ultraviolet rays and reflects visible and infrared rays. |
| Quartz plate | This component is pure quartz, which transmits ultraviolet rays as well as visible and infrared rays. |
| Cold metal mirror | It is made of multi-layer evaporation deposition on to the metal reflective surface, so that it can reflect the light in the required wavelength region and absorb the light in the unnecessary wavelength region. |
| Water cooled quartz jacket | The lamp is put into an inner quartz jacket, which is then put into an outer quartz jacket. Cooled water flows in between the inner and outer jacket to reduce the heat and IR to irradiated surface and hence keeps the temperature of the irradiated surface at low level. |
| Aluminum mirror | This reflector type is made of high-purity aluminum with excellent reflectance so that it can reflect ultraviolet and infrared rays efficiently. |
To achieve the highest UV intensity while maintaining the irradiated surface at an ideal temperature, we provide a variety of layout and configuration options as illustrated below.
Double cold mirrors
The double cold mirror type utilizes a curved cold mirror reflector and a cold mirror plate that reflect ultraviolet rays (UV) and allow infrared rays (IR) and visible light to transmit, thus reducing IR to the irradiated surface. This combination is particularly suitable for low-temperature processes.
Cold mirror & infrared ray cut filter
The cold mirror reflects ultraviolet rays (UV) but transmits infrared rays (IR). However, the infrared cut filter below the lamp allows UV to transmit while reflecting IR. In this way, the two components work efficiently together to reduce IR onto the irradiated surface.
Cold metal mirror
Cold metal mirrors work in the same way as cold mirrors by reflecting ultraviolet rays (UV) but transmitting infrared rays (IR), thus reducing IR onto the irradiated surface to maintain the irradiated surface temperature within the desired range.
Water cooled quartz jacket
In this setup, a UV lamp is placed inside a quartz sleeve, which is then positioned within another quartz sleeve with a larger diameter. Chilled water circulates between the inner and outer sleeves to dissipate the heat and infrared radiation from the UV lamp. As a result, the amount of infrared radiation reaching the surface being treated is considerably reduced, enabling the temperature to be kept at a lower level.
We proceed to conduct tests and experiments in-house to determine the relative temperature of different combinations of reflector types.
| Reflector + α | Relative temperature (%) |
|---|---|
| Aluminum | 100 |
| Cold mirror | 75 |
| Cold metal mirror | 75 |
| Aluminum + Infrared ray cut filter | 55 |
| Cold mirror + Quartz plate heat shield | 50 |
| Cold mirror + Infrared ray cut filter | 40 |
| Water cooled quartz jackets | 35 |
| Double cold mirrors | 30 |
The requirements of each client for ultraviolet spectral output vary. Additionally, different irradiated substances have varying sensitivities to temperature. Therefore, a well-built UV system, which includes an irradiance unit with a reflector, a cooling unit, a UV lamp with a matched power supply, and optionally a conveyor, could be complex when considering the irradiance angle and distance to address the increase in temperature on the irradiated surface.
We meticulously design our UV systems customized to meet our clients’ specific needs through extensive and consistent testing before delivery, ensuring that both the ultraviolet spectral output and the temperature of the irradiated surface are within the optimal range.
