Precision in advanced driver assistance systems 16 January 2023

With the launch of Loctite 3296 – a new dual cure adhesive – Henkel is expanding its range of active alignment adhesives designed for bonding lenses in ADAS (Advanced Driver Assistance Systems) sensors, which are essential for precision and high sensor reliability.

Today’s ADAS are increasing demand for high-resolution camera designs that can focus with ever greater accuracy. Perfected functioning of ADAS and the reliability of the camera or LiDAR ensures driver safety.

With Henkel’s latest adhesive, the active alignment workflow allows for the optical components to be positioned and then finely adjusted to ensure optimal focus before being cured in place. In comparison to a threaded lens barrel that can only be adjusted in the z-direction, active alignment allows for an accuracy within 100 nanometres. Also, the new Loctite product provides a very high cure depth after a few seconds of exposure to UV light and is designed to bond particularly well to aluminium and FR4.

“The ADAS camera and LiDAR modules perform safety critical functions by assisting the driver to stay in control of the driving environment, thereby ensuring safety of all road users. ADAS sensors must provide high resolution images and perform with superior reliability in harsh environments for the lifespan of the vehicle,” explains Rodrigo Aguilar, ADAS business development manager at Henkel.

“Thanks to their exceptional performance and stability, as well as tailored chemistry for long-term durability, the new Loctite 3296 and recently launched Loctite ABLESTIK NCA 3218 adhesives excel in these demanding contexts”, adds Andreas Niegemeier, product development manager at Henkel.

Loctite 3296 and Loctite Ablestik NCA 3218, which was launched earlier this year, are both dual cure adhesives (UV & thermal) that meet a variety of assembly requirements through their respective adhesive performance characteristics. Both products deliver proven high dimensional stability after cure. The two adhesives have also been designed with greater emphasis on environmental responsibility and are fully EU REACH compliant. Moreover, both adhesives are free of CMT or SVHC substances and do not contain any toxic ingredients.

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