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Vacuum Viewports / Windows
High Vacuum and Ultra-high Vacuum (UHV) Viewports
Concept Vacuum offer glass-to-metal sealed windows, vacuum brazed fused silica viewports and high temperature sapphire viewports suitable for high vacuum and UHV environments .
Flange systems: CF (can be used for UHV applications), ISO-KF, ISO-LF
Flange materials: Stainless steel 304L, Stainless steel 316LN (non-magnetic), titanium (non-magnetic)
Optic materials: UV grade fused silica, IR grade fused silica, sapphire (high temperature applications), borosilicate glass, magnesium fluoride, calcium fluoride, zinc selenide and more.
Specials: Re-entrant viewports and over pressure viewports.
Customisable where needed with cooling and lighting options. Get in touch to find the best suited viewport for your application. Different optic materials have higher transmission at particular wavelengths. Transmission can be further improved with anti-reflective coatings. All viewports are supplied cleaned for vacuum use and helium tested, so that they are ready to install immediately onto your system.
Demountable Viewports
Concept Vacuum have developed a range of demountable viewports, enabling our customers to change the O-ring sealed optics without having to replace the complete vacuum window. This is particularly useful if optic damage is expected, for example in high power laser applications. Constructed from stainless steel 304L (1.4306) with an aluminium alloy retainer, our viewports can be installed on standard vacuum ports (KF, CF, ISO), with no special adaptors or fittings are required.
Optic materials available are borosilicate glass, UV grade fused silica, sapphire, zinc selenide (ZnSe), magnesium fluoride (MgF2), barium fluoride (BaF2) and calcium fluoride (CaF2). If you would like to use another material, we can still help you, so get in touch for a speedy quotation.
These demountable viewports are suitable for mounting on high vacuum chambers . They are supplied cleaned to UHV standards and helium leak tested.
- Helium leak tested to 10^-8 mbar.L/s (He)
- Replace optics without needed a new viewport
- Wide range of optics available for different wavelength transmission ranges
Instructions are provided to inform you how to maintain your viewports and change the optics.
We also supply standard glass sealed, bonded and brazed viewports (KF, ISO and CF) via our partner ultrahighvacuum.com - get in touch today for a price or friendly advice on your application.
ISO63 demountable vacuum viewport
Optical Thin Film Coatings
Concept Vacuum can also supply viewports for high vacuum and ultra-high vacuum systems with thin film coatings - layers of material are deposited on a substrate to alter the optical properties. These coatings are used in a wide variety of applications, including:
- Anti-reflection coatings
- Beam splitters
- Filters
- Mirrors
- Polarizers
- Waveguides
Types of Optical Thin Film Coatings
There are two main types of optical thin film coatings: metal coatings and dielectric coatings.
- Metal coatings are made up of a single layer of metal, such as gold, silver, or aluminium. These coatings are highly reflective and are often used in mirrors or to reflect a particular wavelength of radiation.
- Dielectric coatings are made up of multiple layers of dielectric materials, such as magnesium fluoride. These coatings are typically designed to have anti-reflection optical properties, increasing transmission for a particular wavelength or range.
Advantages of Optical Thin Film Coatings
Optical thin film coatings offer a number of advantages, including:
- High performance: Our optical thin film coatings are designed to have very high performance,.
- Durability: Our optical thin film coatings are very durable and can withstand harsh environments.
- Cost-effectiveness: Our optical thin film coatings are cost-effective, especially when used in large quantities.
If you are interested in learning more about optical thin film coatings, please contact Concept Vacuum. We are experts on optical thin film coatings and can help you find the right coating for your application.