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CF Flanged Exotic Lens Viewports

CF Flanged Exotic Lens Viewports

CF Flanged Exotic Lens Viewports: Precision Optics for Ultra-High Vacuum Applications

CF Flanged Exotic Lens Viewports from TFM are engineered to deliver superior optical transmission and structural integrity in ultra-high vacuum (UHV) environments. These specialized viewports are built using premium UHV-compatible materials, with exotic lens options tailored for demanding scientific and industrial processes.

Each CF Flanged Exotic Lens Viewport features a knife-edge ConFlat (CF) flange sealed with fully annealed copper gaskets, ensuring leak-tight performance even during bakeouts and pressure cycling. Whether used in laser diagnostics, plasma research, or high-energy optical systems, these viewports maintain exceptional optical clarity and stability under extreme conditions.

Key Features of CF Flanged Exotic Lens Viewports:

  • UHV-Grade Materials: Constructed from 304L or 316L stainless steel with optically pure lenses such as Sapphire, ZnSe, CaF₂, or UV-grade fused silica, these viewports are designed to endure high temperatures, radiation, and vacuum cycling.

  • CF Flange Compatibility: Designed to interface with industry-standard CF (ConFlat) flanges, these exotic lens viewports integrate seamlessly into any UHV chamber or diagnostic system.

  • Annealed Copper Gaskets: Each viewport is equipped with fully annealed copper gaskets, which minimize thermal and mechanical strain on the lens, ensuring long-term sealing integrity and optical precision.

  • Shutter Compatibility: For processes prone to deposition (e.g., sputtering, evaporation), a viewport shutter is strongly recommended to protect the lens from coating build-up and optical degradation.

Applications of CF Flanged Exotic Lens Viewports:

  • Laser and ion beam diagnostics in UHV chambers

  • Infrared, ultraviolet, or visible-range spectroscopy

  • Vacuum-compatible optical access for research reactors

  • Custom optical monitoring setups in deposition systems

TFM’s CF Flanged Exotic Lens Viewports are trusted by laboratories and vacuum system designers worldwide for their optical performance, vacuum reliability, and robust construction. When optical clarity and system purity are critical, these viewports deliver dependable performance with precision-engineered quality.

Charts

Ordering Table

Drawing Flange / Mounting Window Material Wavelength Optimization View Area Window Thickness Flange Material Thermal Range Coating Type Flatness PartNumber
Tooltip KF40 (2.16" OD) Calcium Fluoride (CaF2) — 0.90 0.098 304L SS -100C to 200C — λ/2 @ 632nm Transmitted Wavefront QF40-150-VPUC
Tooltip KF40 (2.16" OD) Magnesium Fluoride (MgF2) — 0.90 0.098 304L SS -100C to 200C — λ/2 @ 632nm Transmitted Wavefront QF40-150-VPUM
Tooltip KF40 (2.16" OD) Zinc Selenide (ZnSe) — 0.90 0.098 304L SS -100C to 200C — 1λ @ 632nm Transmitted Wavefront QF40-150-VPUZ
Tooltip KF40 (2.16" OD) Zinc Selenide (ZnSe) 8-12 microns 0.90 0.098 304L SS -100C to 200C Broadband Anti-Reflective (Both Sides) 1λ @ 632nm Transmitted Wavefront QF40-150-VPUZC
Tooltip KF50 (2.95" OD) Calcium Fluoride (CaF2) — 0.90 0.098 304L SS -100C to 200C — λ/2 @ 632nm Transmitted Wavefront QF50-200-VPUC
Tooltip KF50 (2.95" OD) Magnesium Fluoride (MgF2) — 0.90 0.098 304L SS -100C to 200C — λ/2 @ 632nm Transmitted Wavefront QF50-200-VPUM
Tooltip KF50 (2.95" OD) Zinc Selenide (ZnSe) — 0.90 0.098 304L SS -100C to 200C — 1λ @ 632nm Transmitted Wavefront QF50-200-VPUZ
Tooltip KF50 (2.95" OD) Zinc Selenide (ZnSe) 8-12 microns 0.90 0.098 304L SS -100C to 200C Broadband Anti-Reflective (Both Sides) 1λ @ 632nm Transmitted Wavefront QF50-200-VPUZC

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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