Precision finished BK7, Fused Silica and Sapphire windows available in custom sizes and machined shapes. Fine tune your reflection and transmission performance requirements with an ultra-durable low loss multi-layer thin film coating. Using high energy deposition techniques, we offer low stress, conductive (ITO), high reflection and enhanced metal mirrors as well as low absorption antireflection coatings. Our advanced metrology and testing laboratory measures performance characteristics for each optic including finish, wavefront, reflection, transmission, vacuum/leak detection, defect mapping and surface quality. From initial samples for development to low-volume production, we offer solutions for your specialized needs.

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MPF Products Inc. produces UHV Re-Entrant Viewports. These specific viewports are perfect for allowing you to introduce cameras or other customer specific tools into the vacuum chamber. MPF can customize our UHV Re-Entrant Viewports to be customer specific in regards to length, size, window material, mounting material and specified coatings wavelengths when needed.

MPF Products, Inc. does not approve the use of ultrasonic cleaning for any viewport. We ship our viewports UHV ready. You may simply blow off the glass to remove any contaminants with clean, dry air. For additional cleaning steps for particulates or contamination from other processes, please review our cleaning procedures at UHV Viewport Cleaning Notes.

Bake-Out Ramp Rate: 20°C per Minute

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EUV Grade (2)

EUV 193 grade viewports offer great transmission at some of the lowest frequencies possible for fused silica (Internal transmission > 99.5% at 193nm).
Laser Grade (3)

DUV Grade fused silica is utilized for MPF’s laser-grade viewports. Feel free to contact us with any questions.
UV Grade (2)

Our UV Grade (Re-Entrant) Fused Silica viewports have good transmission & finish specifications, often used for non-laser uses. Feel free to contact us with any questions.

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EUV Grade (2)

Laser Grade (3)

UV Grade (2)

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