When is Hermetic Sealing Required?
How to prevent moisture or gas penetration while enabling electrical or optical signal transmission; and how to protect sensitive optoelectronic components from environmental influences. These are common challenges faced during the design process. This is when the “hermetic packaging” technology, which has been in mature use for decades, comes into play. It can achieve signal and power transmission while maintaining air-tightness. Hermetic packaging is also used for optical signal transmission. For example, vacuum – sealed optical lenses or flat – window tube caps are often used in the packaging of sensors. The two transmission functions of hermetic packaging are electrical signal transmission and optical signal transmission. – Electrical Power/Signal Transmission: Hermetically sealed connectors can conduct through the sealed housing while preventing the intrusion or escape of moisture, gas and other substance. – Optical Signal Transmission: Hermetical...