Viewports

Sapphire

Sapphire viewports are available with view diameters up to 3 inches, and are bakeable to 450˚C. Single crystal, sapphire windows, with either 0˚ or 90˚ orientation, offer excellent transmission from 250 nm to 4 microns.

Fused Silica

Fused Silica viewport designs are available with diameters up to 8 inches and include zero length designs for low profile applications. These
are all bakeable to 200˚C. Several standard grades of Fused Silica windows are offered having excellent transmission from 193 nm to 2 microns.

Coated Fused Silica

MPF offers a full line of tailored laser viewports designed specifically for a variety of popular high-power lasers. These viewports utilize optimum window and anti-reflective coating specifications to maximize performance at specific wavelengths. Supported wavelengths and laser applications are: 193 nm-ArF Excimer, 248 nm-KrF Excimer, 780 nm-Diode and 1064 nm YAG.

Extended Range Vacuum Optics

These ultra-high vacuum (UHV) viewports employ window materials such as Zinc Selenide, Magnesium Fluoride and Calcium Fluoride. All-metal-sealed, extended-range optics are available In 1 inch and 2 inch view diameters with a combined transmission range of 120 nm to 20 microns. Coatings which enhance the transmission performance of many of these viewports are offered as standard options. Many nonstandard materials, coatings and optical specifications may be reviewed and quoted to meet custom application requirements.

MPF Specialized Optics

Differentially Pumped

Specifically designed for extreme high vacuum applications such as Geochronology, MPF’s differentially pumped windows employ all-metal, dual-seals having a port that accesses the resulting cavity between the seals. The port can be attached to an auxiliary pump to extend the vacuum range beyond UHV. This design has become the standard for geologists studying argon and helium dating.

Non-Magnetic

For optical applications involving strong magnetic fields or those that are exceedingly sensitive to residual magnetism, MPF offers standard fused silica and extended range viewports made using nonmagnetic mounting materials such as 316 LN stainless steel, CP titanium and aluminum.

Re-Entrant

MPF is now offering popular window designs, standard on re-entrant tubing designs. Available in sapphire, fused silica and extended range viewport configurations, these designs are useful for coupling complex lens assemblies such as cameras, telescopes and zoom lenses with applications where reach into a vacuum system is important.

Our off-the-shelf viewports are plane parallel windows hermetically-sealed to stainless steel mounts such as: Weld adapter (-W), Quick Flange (-QF) or Conflat Flange (-CF). These assemblies are specifically designed to conveniently port the transmission of electromagnetic radiation into and/or out of sealed systems. Several standard material options are offered covering various common transmission ranges and applications. Optical coatings are available to enhance and optimize viewport transmission. A few narrow and broad band anti-reflective coatings are offered standard. All viewports are UHV compatible. Other mounting options as well as non-standard materials, coatings and optical features may be customized to meet specific applications.