Delo introduces adhesive for automotive cameras

1 min read

Delo has launched Dualbond OB6799, an adhesive that has been optimised to meet the high optical requirements of modern driver assistance systems.

Delo Dualbond OB6799 enables high throughput and maximum reliability in the active alignment process.
Delo Dualbond OB6799 enables high throughput and maximum reliability in the active alignment process. - (Image credit: Delo)

With it, the adhesive manufacturer is setting new process speed and alignment accuracy standards for automotive cameras.

Advanced driver assistance systems (ADAS) such as lane departure warning and emergency braking systems are becoming increasingly capable, steadily improving vehicle safety. Lidar and radar sensors, as well as high-resolution cameras, are essential to these systems.

Delo Dualbond OB6799 is designed for bonding and active alignment of ADAS cameras. The epoxy adhesive has a linear curing shrinkage that is reproducibly below 1%. In addition, the product is said to exhibit low swelling behaviour, even under changing temperature and humidity conditions, so that camera focus remains optimally adjusted and can permanently fulfil its safety functions.

Since high-resolution cameras are primarily made of aluminium, the coefficient of thermal expansion (CTE) was adapted to this material. Application-relevant aging tests (e.g., +85 °C/85 % r. h., 2000 h) confirm the adhesive’s high bonding strength to aluminium substrates.

Delo Dualbond OB6799 is optimised for active alignment processes. With this method, now established in the automotive industry for manufacturing high-precision optical sensor systems such as ADAS cameras, image sensor data is actively read to determine the optimal sensor alignment to optics.

Due to the adhesive's light fixation, the aligned components are said to be fixed within a few seconds and, from that point, reliably maintain their position. This makes Delo Dualbond OB6799 ideal for manufacturing processes designed for high volumes with demanding efficiency as well as alignment accuracy requirements. The final curing of the adhesive takes place via low heat at +80 °C.

Delo Dualbond OB6799 adds another active alignment adhesive to the company’s product portfolio. Delo also offers special adhesive and process technology solutions for Lidar and Radar systems.