Optical Viewports for CF and KF Systems

Available with Borosilicate or Sapphire Windows

BMT Fluid Components offers high-performance optical viewports designed for High Vacuum (HV) and Ultra-High Vacuum (UHV) environments. Our viewports are engineered for reliability and precision, ensuring seamless integration with your vacuum systems.

Key Features

• Flange Compatibility: CF (ideal for UHV), ISO-KF, ISO-LF
• Flange Materials: Stainless Steel 304L, Stainless Steel 316LN (non-magnetic), Titanium (non-magnetic)
• Optic Materials:
  • Borosilicate glass
  • UV & IR grade fused silica
  • Sapphire (high-temperature applications)
  • Magnesium fluoride, calcium fluoride, zinc selenide, and more
• Special Options: Re-entrant viewports and over-pressure viewports

Customizable Solutions

Enhance your setup with cooling and lighting options. Improve transmission with anti-reflective coatings tailored to your wavelength requirements. All viewports are helium leak tested and cleaned for vacuum use, ready for immediate installation.

Demountable Viewports

Our demountable design allows you to replace optics without replacing the entire viewport, perfect for high-power laser applications or environments where optic damage is expected.

• Constructed from Stainless Steel 304L with aluminum alloy retainer
• Fits standard vacuum ports (KF, CF, ISO) — no special adaptors required
• Wide range of optic materials: borosilicate, fused silica, sapphire, ZnSe, MgF₂, BaF₂, CaF₂

Leak Tested: 10⁻⁸ mbar·L/s (He)
Includes: Maintenance instructions for easy optic replacement

Optical Thin Film Coatings

Available for HV and UHV systems to optimize optical performance:

• Coating Types:
  • Metal coatings (gold, silver, aluminum) for high reflectivity
  • Dielectric coatings for anti-reflection and wavelength-specific transmission
• Applications: Anti-reflection, beam splitters, filters, mirrors, polarizers, waveguides

Benefits:

• High performance
• Durable for harsh environments
• Cost-effective for large-scale use

Need a custom solution? Contact BMT FLuid Components today for expert advice and fast quotations. We’ll help you select the perfect viewport for your application.