[Parameter] the Temperature Characteristics of UVLED Lamp Beads

UV LED is composed of multiple parts. Each part affects the thermal characteristics of LED, and it also has a different effect on the heat aging. UVLED's most obvious performance change with temperature is forward voltage drop (VF). This is a chip -level phenomenon. The LEDs of different manufacturers are different. The degree of positive pressure drop is generally between -2mv/ -4mv . As shown in Figure 1, the forward voltage drop (VF) and environmental temperature of the UVLED data manual. Figure 1 can be seen from the above figure that if UVLED works in the constant current mode, the positive voltage drop of LED will decrease with the heat of LED. At the same time, the power of UVLED also decreases with the temperature increase, and the light output decreases. The impact of temperature on the electrical characteristics of UVLED depends on the chip, and the impact on optical characteristics involves the component of all LEDs. The temperature effect we often discuss is the phenomenon of UVLED's brightness and efficiency decreased with the temperature increase. Figure 2 is the relationship curve of relative radiation flux and temperature under constant current. It can be seen that relative radiation flux decreases with the increase in temperature. Figure 2 can be seen from above that thermal impact on UVLED's electrical and optical characteristics of UVLED. In order to reduce the effect of temperature on UVLED light sources, especially high -power facial light sources and special light sources, the temperature control of UVLED light source needs to be implemented. For a long time, Tianhui attached great importance to technological innovation, developed a variety of mature and reliable heat dissipation systems/solutions, and won unanimous praise from customers.