In recent years, UV-LED curing technology has continued to develop, and with it comes the continuous increase in application fields. As a new energy source for energy saving, emission reduction and consumption reduction, the speed of UV-LED expansion is staggering. In the field of circuit board exposure, traditional mercury lamps have always firmly occupied a dominant position, but after UV-LED entered the field of exposure, its dominance has been precarious since then.
Detailed UV-LED exposure machine UV-LED exposure machine refers to a device that transfers the image information on the film or other transparent body to the surface coated with photosensitive material by turning on the light. The UV-LED exposure machine uses a UV-LED ultraviolet light source with LED chips as the luminous body. At present, UV-LED exposure equipment is widely used in my country's optoelectronic industry and plays a pivotal role. At present, the new exposure machine is equipped with the application of UV-LED cold light source curing machine, and it also has a precise double aspherical quartz lens, which can make the parallel half angle of light less than 2°. The line resolution can reach 50um/um (normal machine is 100um/um) ). Moreover, the absence of infrared heat radiation avoids the film expansion and contraction effect, guarantees the high-fidelity quality of image transfer and almost no light attenuation, which fully reflects the higher stability of the UV-LED light source during the manufacturing process. It not only improves the qualification rate of the product, but also does not produce polluting ozone and is green and environmentally friendly. It is an ideal replacement product for the ordinary mercury lamp exposure machine used in the production of PCB circuit boards.
The superiority of UV-LED is embodied in the following aspects
Cold light source, no film expansion or contraction
1. The spectrum contains only pure UV light, without infrared and visible light; 2. There is no problem of film expansion and contraction;
Parallel light, precise optical combination
1. Single-sided UV light output, no need to use a reflector; 2. Balanced arrangement, no tilt angle error; 3. Precise optical combination to ensure that the parallel half angle is ≤ 2 degrees;
4. The LED is calibrated point by point to ensure the consistency of luminous intensity.
Scan back and forth, high uniformity
1. Scanning output UV light, which can realize surface light source of any size; 2. Fuzzy matrix arrangement technology to ensure high energy uniformity; 3. Modular light source structure can adjust the energy of each point arbitrarily, which is more convenient for maintenance.
Energy saving, emission reduction and consumption reduction
1. Green environmental protection does not contain mercury and other heavy metal elements, changing the production environment;
2. Momentary switch does not need to be preheated and can be used immediately, which improves production efficiency;
3. It can save up to 85% of the electric energy, no standby loss;
4. Long service life, more than 20,000 hours.
Deep curing, high stability
1. The light source is a mixed wave band, allowing the ink to be deeply cured;
2. The output energy is stable and predictable, so the printing effect is also stable and predictable.
Easy to use
1.220V power supply;
2. Small size, easy to install and use.
