Dr. Hönle with new LED optics for UV adhesive curing
Dr. Hönle AG has developed a new type of optics for its Bluepoint LED UV curing unit series, which bundles the light into a linear irradiation and can therefore cure adhesives with a significantly higher intensity.
The new optics can simply be screwed onto the LED heads of the Bluepoint LED and Bluepoint LED Eco devices from Hönle. The purchase of new LED devices is not necessary. The new optics are suitable for wavelengths of 365/385/405 nm. The focused light provides an irradiation area of 10 mm x 1 mm and can achieve intensities of up to 7,000 mW/cm2. Thanks to the special shape of the lens, the light is distributed absolutely homogeneously across the irradiation field. The optics are particularly suitable for small-area applications where a particularly high intensity is required in a small space. This is necessary, for example, when curing in gaps. Adhesives that are applied in annular gaps can be cured quickly and reliably by arranging several LED heads in a circle around the circumference. The optimized curing and high intensity enable the shortest possible curing cycles.
The Bluepoint LED UV spotlight series from Hönle is especially suitable for curing UV-curing adhesives in industrial assembly processes. The compact dimensions of the LED head of the Bluepoint series allow integration into the machine even where space is limited. The LED heads are passively cooled and require neither air nor water cooling. As LEDs do not emit any IR energy, curing takes place at low temperatures. This makes LED devices ideal for use with temperature-sensitive substrates. Typical applications for Bluepoint devices with the new optics include active alignment, rod lens or lens bonding in optics or medical technology, as well as underfills or securing SMDs on printed circuit boards in the electronics sector. UV adhesives from Panacol's Vitralit® series that are specially adapted to the wavelengths of the Bluepoint LED are also available for all these applications.