Vacuum Optics ❯ Viewports ❯ Kodial zero length viewports
Kodial zero length viewports
Seal Type: Induction heater seal
Maximum Temperature:
CF version: 350 °C,
KF & ISO versions: 150 °C
Minimum Temperature: -20 °C
Maximum Rate of Temperature Change: 3 °C per minute
Leak Rate: <1×10 -10 mbar L/s (He)
Pressure Range:
1 bar to 1×10 -11 mbar
Surface Quality: 60/40 scratch/dig
Parallelism: < 3 arc minutes – before induction sealing
Flange Material:
CF Version: 304L, 316LN
KF & ISO versions: 304L
Seal Type: Bonded
Maximum Temperature: 120 °C
Minimum Temperature: -45 °C
Maximum Rate of Temperature Change: 3 °C per minute
Leak Rate: <1×10 -10 mbar L/s (He)
Pressure Range: 1 bar to 1×10 -9 mbar
Surface Quality: 60/40 scratch/dig
Parallelism: < 3 arc minutes
Flange Material: 316LN
Torr Scientific offers a wide range of Kodial vacuum viewports in the Conflat® (CF), ISO or KF flange style. These viewports are constructed from a borosilicate optic and they are sealed using either an induction heater or bonded process. Glass-to-metal sealing for all Kodial viewports is conducted in‑house in our glass shop.
Kodial viewports are rugged, allowing for repeated bakeouts at high temperatures to achieve ultra‑high vacuum (UHV) and they offer broadband optical transmission from visible to near‑infrared.
Our Kodial viewports are helium leak tested, cleaned and packed to UHV standards.
What are the properties of Kodial?
Thermal expansion coefficient is a good match for Kovar
- Optically transparent
- Glass-to-metal seals manufactured in-house at Torr
- High maximum temperature bakeout
What are the uses of Kodial viewports?
Observations into the chambers:
- Sample transfers
- Monitoring processes
- Visually inspecting equipment
| CF (Induction Heated) | KF (Induction Heated) | ISO (Induction Heated) | CF (Bonded) | |
|---|---|---|---|---|
| Non-magnetic | ☐ | ☐ | ☐ | ☑ |
| Lead glass | ☑ | ☐ | ☐ | ☐ |
| Large area (LA) | ☑ | ☑ | ☐ | ☐ |
| Indium tin oxide (ITO) | ☑ | ☑ | ☑ | ☐ |
| Lead glass & ITO | ☑ | ☐ | ☐ | ☐ |
| Anti-reflective coating | ☑ | ☑ | ☑ | ☑ |
| 304L stainless steel flange | ☑ | ☑ | ☑ | ☑ |
| 316LN stainless steel flange | ☑ | ☐ | ☐ | ☑ |
| Our flanges may have a different name for you: | |||
|---|---|---|---|
| CF | DN | ICF | |
| KF | ISO-KF | NW | QF |
| ISO | LF | LFB | MF |
Kodial transmission curve
Kodial viewports: what are the further possibilities?
- Large area (LA) gives a wider view diameter.
- The lead glass (LG) option utilises an added lead glass disc placed on the atmosphere side of the Kodial viewport to protect against X-ray radiation.
- Re-entrant style Kodial viewports can provide access for equipment, such as cameras, to the vacuum chamber.
- Non-standard options – standard designs can be customised according to customer requirements – contact sales to find out more.
Torr also offers accessories for viewports, such as annealed copper gaskets, viewport safety covers and bolts or clamps for KF or ISO flanges.
What AR & ITO coatings are available for Kodial viewports?
Anti-reflective (AR)
- Kodial viewports are suitable for AR, VAR, WAR or BBAR coatings.
- Coatings help to increase the transmission at customer specified wavelengths and reduce reflection
- Transmission range of Kodial: visible to near-infrared
Please enquire with our sales team and request a wavelength range to receive a computer-generated coating transmission curve.
Indium tin oxide (ITO)
- Indium tin oxide (ITO) coating- aims to reduce electrostatic charge build up on the vacuum side of the optic.
Compare the popular vacuum optics materials and their transmission
Downloadable PDF posters
Kodial is not for you?
Please see our other viewports, such as fused silica, sapphire,
magnesium fluoride (MgF2), calcium fluoride (CaF2), barium fluoride (BaF2), zinc selenide (ZnSe)
CVD diamond or natural z‑cut quartz and more.
CF Viewports
Induction heater sealed:
| Part Number | Flange Type | Flange OD | View Diameter | Optic Thickness | Flange Material | Weld Ring Material | Max Temp | Download 2D | Download STEP File |
|---|---|---|---|---|---|---|---|---|---|
| VPZ16 | NW16CF | 34 mm 1.33" | 15 mm 0.60" | 1.0 mm 0.04" | 304L | Kovar | 350°C | Drawing coming soon | VPZ16 Coming soon |
| VPZ16-LN | NW16CF | 34 mm 1.33" | 15 mm 0.60" | 1.0 mm 0.04" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ16-LN Coming soon |
| VPZ16LA | NW16CF | 34 mm 1.33" | 15.5 mm 0.62" | 1.5 mm 0.60" | 304L | Kovar | 350°C | Drawing coming soon | VPZ16LA Coming soon |
| VPZ16LA-LN | NW16CF | 34 mm 1.33" | 15.5 mm 0.62" | 1.5 mm 0.60" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ16LA-LN Coming soon |
| VPZ38 | NW35CF | 70 mm 2.75" | 32 mm 1.26" | 2.5 mm 0.10" | 304L | Kovar | 350°C | Drawing coming soon | VPZ38 Coming soon |
| VPZ38-LN | NW35CF | 70 mm 2.75" | 32 mm 1.26" | 2.5 mm 0.10" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ38-LN Coming soon |
| VPZ38LA | NW35CF | 70 mm 2.75" | 38 mm 1.50" | 3.25 mm 0.13" | 304L | Kovar | 350°C | Drawing coming soon | VPZ38LA Coming soon |
| VPZ38LA-LN | NW35CF | 70 mm 2.75" | 38 mm 1.50" | 3.25 mm 0.13" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ38LA-LN Coming soon |
| VPZ64 | NW63CF | 114 mm 4.5" | 63 mm 2.49" | 3.0 mm 0.12" | 304L | Kovar | 350°C | Drawing coming soon | VPZ64 Coming soon |
| VPZ64-LN | NW63CF | 114 mm 4.5" | 63 mm 2.49" | 3.0 mm 0.12" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ64-LN Coming soon |
| VPZ100 | NW100CF | 152 mm 6.0" | 89 mm 3.51" | 4.0 mm 0.16" | 304L | Kovar | 350°C | Drawing coming soon | VPZ100 Coming soon |
| VPZ100-LN | NW100CF | 152 mm 6.0" | 89 mm 3.51" | 4.0 mm 0.16" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ100-LN Coming soon |
| VPZ150 | NW150CF | 203 mm 8.0" | 136 mm 5.36" | 6.5 mm 0.26" | 304L | Kovar | 350°C | Drawing coming soon | VPZ150 Coming soon |
| VPZ150-LN | NW150CF | 203 mm 8.0" | 136 mm 5.36" | 6.5 mm 0.26" | 316LN | Kovar | 350°C | Drawing coming soon | VPZ150-LN Coming soon |
| VPZ200 | NW200CF | 254 mm 10.0" | 136 mm 5.36" | 6.5 mm 0.26" | 304L | Kovar | 350°C | Drawing coming soon | VPZ200 Coming soon |
| VPZ200-LN | NW200CF | 254 mm 10.0" | 183 mm 7.21" | 6.5 mm 0.26" | 304L | Kovar | 350°C | Drawing coming soon | VPZ200-LN Coming soon |
Bonded, non-magnetic:
| Part Number | Flange Type | Flange OD | View Diameter | Optic Thickness | Flange Material | Weld Ring Material | Max Temp | Download 2D | Download STEP File |
|---|---|---|---|---|---|---|---|---|---|
| BVPZ16-NM | NW16CF | 34 mm 1.33" | 15 mm 0.60" | 1.0 mm 0.04" | 316LN | Niobium | 350°C | Drawing coming soon | BVPZ16-NM Coming soon |
| BVPZ38-NM | NW35CF | 70 mm 2.75" | 32 mm 1.26" | 2.5 mm 0.10" | 316LN | Niobium | 350°C | Drawing coming soon | BVPZ38-NM Coming soon |
| BVPZ64-NM | NW63CF | 114 mm 4.5" | 63 mm 2.49" | 3.0 mm 0.12" | 316LN | Niobium | 350°C | Drawing coming soon | BVPZ64-NM Coming soon |
| BVPZ100-NM | NW100CF | 152 mm 6.0" | 89 mm 3.51" | 4.0 mm 0.16" | 316LN | Niobium | 350°C | Drawing coming soon | BVPZ100-NM Coming soon |
| BVPZ150-NM | NW150CF | 203 mm 8.0" | 136 mm 5.36" | 6.5 mm 0.26" | 316LN | Niobium | 350°C | Drawing coming soon | BVPZ150-NM Coming soon |
KF Viewports
Induction heater sealed:
| Part Number | Flange Type | Flange OD | View Diameter | Optic Thickness | Flange Material | Weld Ring Material | Max Temp | Download 2D | Download STEP File |
|---|---|---|---|---|---|---|---|---|---|
| KVPZ16 | KF16 | 30 mm 1.2" | 15 mm 0.60" | 1.0 mm 0.04" | 304L | Kovar | 150°C | Drawing coming soon | KVPZ16 Coming soon |
| KVPZ25-16LA | KF25 | 40 mm 1.60" | 15.5 mm 0.62" | 1.5 mm 0.06" | 304L | Kovar | 150°C | Drawing coming soon | KVPZ25-16LA Coming soon |
| KVPZ40-32 | KF40 | 55 mm 2.20" | 32 mm 1.26" | 2.5 mm 0.10" | 304L | Kovar | 150°C | Drawing coming soon | KVPZ40/32 Coming soon |
| KVPZ40LA | KF40 | 55 mm 2.20" | 38.0 mm 1.50" | 3.25 mm 0.13" | 304L | Kovar | 150°C | Drawing coming soon | KVPZ40LA Coming soon |
| KVPZ50 | KF50 | 75 mm 3.00" | 38.0 mm 1.50" | 3.25 mm 0.13" | 304L | Kovar | 150°C | Drawing coming soon | KVPZ50 Coming soon |
ISO Viewports
Induction heater sealed:
| Part Number | Flange Type | Flange OD | View Diameter | Optic Thickness | Flange Material | Weld Ring Material | Max Temp | Download 2D | Download STEP File |
|---|---|---|---|---|---|---|---|---|---|
| ISO63VPZ | ISO63 | 95 mm 3.80" | 38 mm 1.50" | 3.25 mm 0.13" | 304L | Kovar | 150°C | Drawing coming soon | ISO63VPZ Coming soon |
| ISO100VPZ | ISO100 | 130 mm 5.20" | 63 mm 2.49" | 3.0 mm 0.12" | 304L | Kovar | 150°C | Drawing coming soon | ISO100VPZ Coming soon |
| ISO160VPZ | ISO160 | 180 mm 7.10" | 89 mm 3.51" | 4.0 mm 0.16" | 304L | Kovar | 150°C | Drawing coming soon | ISO160VPZ Coming soon |
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