Henkel's new dual cure adhesive for assembly of high performance ADAS sensors

Today’s advanced driver assistance systems (ADAS) are increasing demand for high-resolution camera designs that can focus with ever greater accuracy. The perfected functioning of ADAS and thus the reliability of the camera or LiDAR ensure driver safety. Henkel reports that as a longstanding partner to the automotive industry, the company is continuing to develop new adhesives for lens bonding in ADAS sensors, specifically designed to meet these next generation demands.

With the launch of Loctite 3296 – a new dual cure adhesive – Henkel is expanding its range of dedicated active alignment adhesives for ADAS sensors, which are essential for precision and high sensor reliability. According to the company, the new product provides a very high cure depth after only a few seconds of exposure to UV light and is designed to bond particularly well to aluminum and FR4.

The company reports that when precision is key, the active-alignment assembly process is vital to deliver components of the required quality: 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. Compared to a threaded lens barrel that can only be adjusted in the z-direction, active-alignment allows for six-degrees of freedom in the alignment process, with an accuracy of 100 nanometers.

“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,” said 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 highly demanding contexts”, complements Andreas Niegemeier, Product Development Manager at Henkel.

Source: Henkel