Vacuum Optics Catalogue - March 2022

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Attenuation Filter WheelsSpecificationMaterial:Optical DensityLinearity:Laser quailty quartz/ SpectrosilTransmission >80% for250nm to 2500nm+/- 6% (with angle)Coated Sector: 300°Parallelism:Surface Quality:Coating:DimensionTolerance:+/- 20 arc sec20-10 scratch/digPVD metallic alloy optimised forspectral neutrality< +/- 0.2mmAttenuationFilter WheelsTorr Scientific manufactures Attenuation Filter Wheels in a range of sizes from 50 mm to 120 mmdiameter and with differing optical densities 0-1, 0-2 and 0-3. These filters are useful as beam splittersand for applications requiring variable light attenuation in a continuous analogue mode, suchas in spectrophotometers and laser measuring systems. Laser quality fused silica is used for UV/VIS/NIR applications and for its thermal stability. All filter wheels are manufactured to tight tolerancesespecially parallelism to minimise beam movement with rotation. Specially designed items can alsobe accommodated on request. Each filter wheel is supplied with a test certificate - typical data for anon-standard density of 2.25 stays well within the specified linearity tolerance of +/- 6%.Transmission Curve - Fused SilicaPlease note that the optical transmission curves are approximations and should be used for reference only98Copyright ©www.torrscientific.co.ukSkip to Contents
Attenuation Filter Wheels2.50100.00%Neutral Density Filter TestOptical Density Number2.001.501.000.50Transmission (%)10.00%1.00%0.00050 100 150 200 250 300 350Angle (degrees)0.10%050 100 150 200 250Angle (degrees)300 350AttenuationFilter WheelsPart Number ØA (mm) ØB (mm) t (mm) αLFW50 50 15 4 55°LFW75 75 15 4 55°LFW100 100 15 4 55°LFW120 120 15 4 55°www.torrscientific.co.uk 99Skip to ContentsCopyright ©
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Issue March 20222Copyright ©www.to
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ContentsCompany Introduction ......
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FacilitiesFacilitiesAll brazed and
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Product IntroductionViewportsTorr S
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Fused Silica Zero Length ViewportsF
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Bonded Fused Silica Zero Length Vie
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Fused Silica Re-Entrant ViewportsSp
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Kodial Zero Length ViewportsSpecifi
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Kodial Zero Length Viewports with I
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Kodial Zero Length Viewportswith X-
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Kodial Zero Length Viewports withIT
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Non-Magnetic Kodial Zero Length Vie
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Kodial Re-Entrant ViewportsSpecific
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200°C Sapphire Zero Length Viewpor
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High Temperature Sapphire Zero Leng
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Zinc Selenide Zero Length Viewports
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Magnesium Fluoride Zero Length View
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Calcium Fluoride Zero Length Viewpo
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Barium Fluoride Zero Length Viewpor
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CVD Diamond UHV ViewportsSpecificat
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Quartz Natural Z-Cut Zero Length Vi
Page 48 and 49: Differentially-pumped ViewportsSpec
Page 50 and 51: Fused Silica UHV Laser Viewportswit
Page 52 and 53: Fused Silica UHV Viewportswith Anti
Page 54 and 55: Fused Silica UHV Viewportswith Broa
Page 56 and 57: Fused Silica UHV Viewportswith ‘W
Page 58 and 59: Kodial Zero Length Viewportswith An
Page 60 and 61: Kodial Zero Length Viewportswith Br
Page 62 and 63: Kodial Zero Length Viewportswith
Page 64 and 65: Kodial Zero Length Viewportswith
Page 66 and 67: Sapphire viewports with Anti-Reflec
Page 68 and 69: Sapphire viewports withBroadband An
Page 70 and 71: Sapphire viewports with‘VAR’ An
Page 72 and 73: AR CoatedZinc Selenide ZeroLength V
Page 74 and 75: AR Coated Zinc Selenide Zero Length
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Page 78 and 79: Glass to Metal SealsCF Tubulated Ko
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Page 82 and 83: KF and ISO Centering RingsSpecifica
Page 84 and 85: CF Copper GasketsSpecificationMater
Page 86 and 87: Clamps and FastenersKF Swing Clamps
Page 88 and 89: Atom Trap ChambersSpecificationBody
Page 90 and 91: Viewport ShuttersFeaturesManual or
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Page 96 and 97: OpticsFused SilicaFused Silica is a
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Page 102 and 103: CVD DiamondSpecificationTolerance o
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Page 106 and 107: Ceramic BreaksSpecificationSeal Typ
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Page 110 and 111: UHV CF RHEED ScreensCF ViewportCF V
Page 112 and 113: IndexPart NumberATC-10PC 89ATC-10PU
Page 114 and 115: IndexPart NumberKVPZ50QWAR 57KVPZ50
Page 116 and 117: IndexPart NumberVPZ150WAR-LN 65VPZ1
Page 118 and 119: 118Copyright ©www.torrscientific.c
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Vacuum Optics Catalogue - March 2022

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