Custom Hermetic Windows

The Hermetic Solutions Group manufactures custom hermetic windows for laser, optical and infrared applications that maintain the highest levels of hermetic integrity under extreme environmental operating conditions such as: space or defense-related LADAR, laser designation/acquisition systems, and medical endoscopic tools.

Our hermetic windows provide engineers additional advantages beyond high hermetic performance. They are available with a variety of optical glasses such as sapphire, quartz and BK10. These windows are also designed to be laser welded into a range of metals, including: aluminum, titanium and iron/nickel alloys, for additional flexibility. The Hermetic Solution Group also provides a number of window sealing options including: proprietary active braze sealing; a patented direct sealing process; standard braze sealing, solder sealing and a newly developed ceramic sealing process.

Looking for More?

Ceramic Sealing Technology

The Hermetic Solutions Group pioneered using ceramic-to-metal sealing technology to manufacture hermetically sealed windows for optical, laser and infrared applications. The unique bonding properties and polycrystalline structure of the Hermetic Solutions Group’s Kryoflex® material now allow the company to produce sight or wave-guide windows that maintain the highest levels of hermetic packaging integrity under the extreme environmental conditions. This new sealing approach is particularly well suited for space or defense-related LADAR, laser designation/acquisition systems and medical endoscopes. The Hermetic Solution Group’s ceramic-sealed hermetic windows offer engineers additional advantages beyond high hermetic performance. Because Kryoflex® seals at relatively low temperatures, they can choose from a variety of optical glasses such as sapphire, quartz and BK10. Windows produced with this new process are extremely robust and reliable because a key point of failure – solder joint fatigue – is eliminated. They provide a leak rate equal to or less than 1×10-9 cc/sec helium at 1 atmospheric differential pressure, even when subjected to extreme thermal and mechanical shock. In medical applications, these windows will remain hermetic after repeated (1,000+) autoclave sterilization cycles. The Hermetic Solution Group’s ceramic-sealed window materials have also passed cytotoxicity testing, so they’re proven safe for use within the human body. Unlike solder- or braze-sealed windows, our ceramic-sealed hermetic windows do not require metallization. Eliminating this step reduces costs and processing time. It also allows anti-reflective coatings to be applied after the sealing process, ensuring that critical A/R coatings are not impacted by subsequent processing.

Ceramic Sealing Technology

The Hermetic Solutions Group pioneered using ceramic-to-metal sealing technology to manufacture hermetically sealed windows for optical, laser and infrared applications. The unique bonding properties and polycrystalline structure of the Hermetic Solutions Group’s Kryoflex® material now allow the company to produce sight or wave-guide windows that maintain the highest levels of hermetic packaging integrity under the extreme environmental conditions. This new sealing approach is particularly well suited for space or defense-related LADAR, laser designation/acquisition systems and medical endoscopes. The Hermetic Solution Group’s ceramic-sealed hermetic windows offer engineers additional advantages beyond high hermetic performance. Because Kryoflex® seals at relatively low temperatures, they can choose from a variety of optical glasses such as sapphire, quartz and BK10. Windows produced with this new process are extremely robust and reliable because a key point of failure – solder joint fatigue – is eliminated. They provide a leak rate equal to or less than 1×10-9 cc/sec helium at 1 atmospheric differential pressure, even when subjected to extreme thermal and mechanical shock. In medical applications, these windows will remain hermetic after repeated (1,000+) autoclave sterilization cycles. The Hermetic Solution Group’s ceramic-sealed window materials have also passed cytotoxicity testing, so they’re proven safe for use within the human body. Unlike solder- or braze-sealed windows, our ceramic-sealed hermetic windows do not require metallization. Eliminating this step reduces costs and processing time. It also allows anti-reflective coatings to be applied after the sealing process, ensuring that critical A/R coatings are not impacted by subsequent processing.