Vacuum Viewports
Vacuum viewports are specialized windows or ports integrated into vacuum systems, allowing visual observation or the transmission of light into or out of a vacuum chamber without compromising the vacuum environment. Firebird Optics offers viewports made from glass, fused silica, sapphire, ZnSe, CVD diamond and many more as well as a variety of flanges. All setups are designed to withstand the vacuum pressure and maintain optical clarity. They are sealed with high-quality, vacuum-compatible gaskets or welds to ensure they do not leak.
These viewports are essential in various fields, including materials science, semiconductor manufacturing, and fundamental physics research, where maintaining a controlled vacuum environment is crucial.
CF Flanged Fused Silica Viewports
CF Flanged Fused Silica Viewports
Fused silica UHV viewports are specialized windows designed for ultra-high vacuum (UHV) systems, offering excellent optical clarity, thermal stability, and resistance to chemical corrosion. These viewports maintain vacuum integrity while allowing precise optical access for high-resolution measurements and experiments. They are essential in demanding applications like spectroscopy, laser-based research, and advanced semiconductor processing.
Standard Specifications of CF Flanged Fused Silica Viewports:
Features high-grade Firebird Optics UV fused silica windows.
CF Flanges and sleeves made from 304L SS for UHV compatibility. Other materials available upon request.
Viewports sealed with fully annealed copper gaskets, which serve to reduce strain.
Three standard view area sizes of 15mm (DN16CF- 33.78mm OD), 38.1mm (DN35CF-DN40CF- 69.85mm OD) and 49.3mm (DN63F- 114.3mm OD) available. Custom sizes available upon request.
Flatness: λ/4 @ 632nm Transmitted Wavefront
Surface finish: 40/20 Scratch-Dig
Handling and Safety Guide for CF-Flanged Fused Silica Viewports
Overview
CF-flanged fused silica viewports are essential components in ultra-high vacuum (UHV) applications. These viewports offer excellent transparency, durability, and thermal stability, making them ideal for a wide range of optical and scientific applications. Proper handling and safety measures are crucial to maintain their performance and longevity.
Handling Instructions
Clean Environment: Always handle fused silica viewports in a clean, dust-free environment to prevent contamination. Use cleanroom gloves and tools to avoid transferring oils or dirt.
Careful Handling: Fused silica is strong but can be brittle. Handle with care to prevent chipping or cracking. Avoid dropping or applying sudden mechanical stress.
Support During Installation: When installing the viewport into a CF flange, ensure it is properly supported. Use a compatible gasket and tighten the bolts evenly to distribute pressure.
Avoid Direct Contact: Minimize direct contact with the optical surface. If touching is necessary, use powder-free gloves or finger cots. Clean any residues with appropriate solvents like isopropyl alcohol and lint-free wipes.
Safety Precautions
Thermal Considerations: Fused silica viewports can withstand high temperatures, but rapid temperature changes can cause thermal shock. Ensure gradual heating and cooling to prevent damage.
Chemical Exposure: While fused silica has good chemical resistance, prolonged exposure to strong acids or bases should be avoided. Clean only with recommended solvents.
Protective Gear: Use appropriate protective gear such as gloves and safety glasses when handling viewports to prevent injury from accidental breakage or chemical exposure.
Storage: Store viewports in a protective case or clean, padded container when not in use. Ensure the storage area is dry and free from contaminants.
Maintenance Tips
Regular Inspection: Periodically inspect the viewport for any signs of damage or contamination. Replace if any cracks, chips, or significant scratches are observed.
Cleaning: Clean the viewport using approved solvents and lint-free wipes. Avoid abrasive materials that could scratch the surface.
Proper Use: Ensure the viewport is used within its specified temperature and pressure limits to avoid compromising its integrity.
