Basket (0)
Knight Optical(UK) Ltd - [email protected] - +44 (0)1622 859444

Standard grade whitefloat windows

What are you looking for in Stock?

White float windows are cost effective medium performance windows and acceptable in a host of scientific instrument applications.
They are cut from large sheets that are relatively flat and parallel and can be supplied in standard thickness down to 1.1mm.  Thinner windows can be supplied to special order.  As no polishing is required white float windows are extremely economical. White float windows transmit efficiently from 320nm to 2600nm and are a good alternative to BK7 or equivalent . They are an economical choice of window as the substrate material is available in standard sheet polished material in a range of thicknesses so no polishing is required, unlike BK7 or equivalent  that is originates as block material and requires further processing of sawing and polishing adding to cost. When using white float windows without antireflective coating there is a small residual reflection. If this is significant then the AR coated versions should be used. 

We offer four versions of white float windows, uncoated, AR coated one face, AR coated both faces and ITO coated.

Uncoated white float windows: This range of economical white float windows are available as diameters, squares and rectangles. Large stock sheets can be cut down for your custom uncoated white float windows. White float windows are ideal for a range of display, lighting and scientific instrument applications.


White float windows antireflective coated on one face: Our 1mm thk white float windows antireflective coated one face with extended broadband AR coating (AV2 specification) achieving better than 0.5%R,[email protected] Our 3mm thk range are cut from large 1000x1000mm sheets that are extremely economical achieving better than <1%R,[email protected] in the visible (AV8 specification) AR coated single-sided white float windows are available as diameters edged to accurate tolerances Squares and rectangles have cut and chamfered edges to ±0.25mm tolerances. We also stock large sheets of white float material AR coated on one side as 1000x1000mm in thicknesses of 2mm to 8mm thk for custom AR coated white float windows. The extended broadband 1mm thk type is available as 145x100mm sheets.

White float windows antireflective coated on both faces: Our 1mm thk white float windows antireflective coated on both faces is coated with extended broadband AR coating (AV2 specification) achieving better than 0.5%R,[email protected] Our 3mm thk range are cut from large 1000x1000mm sheets that are extremely economical AR coated large sheets working efficiently in the visible (AV8 specification) achieving <1%R,[email protected] Diameters are edged to accurate tolerances, squares and rectangles have cut and chamfered edges to ±0.25mm tolerances. We also stock large sheets of white float material AR coated on both sides as 1000x1000mm in thicknesses of 2mm to 8mm thk for custom The extended broadband 1mm thk type AR coated on both faces are available as 145x100mm sheets.

White float windows telecoms coated on one face: AR coated white float windows coated for the telecoms region between 1050-1700nm. Our coating achieves less than 0.5% reflection in the telecoms band and 0.09% reflection at 1550nm. These windows are optimized for fibre optic applications in the S and C bands between 1460nm to 1565nm while maintaining excellent transmision out of the operating wavelength.

White float windows ITO coated on one face: ITO coating is an electrically conducting coating used for a host of defence and aerospace applications. We stock ITO coated white float windows as diameter, square and rectangular apertures. Indium Tin Oxide (ITO) coated windows are used for displays, electric heating and EMI shielding applications. These ITO coated windows “Indium Tin Oxide” are vacuum coated to 20ohm.  We stock larger sheets of ITO coated glass as 300mm squares so if your size is not listed please enquire about your custom ITO coated application. We can offer custom ITO windows to your requirements with different levels of resistance. We can also coat ITO onto plastic or polymers, please speak to our sales team.

Our complete range of white float windows can be machined to special shapes and surfaces can be ground to create a diffused finish. Surfaces can also be etched with screen printing designs. For high quality windows please see Quality BK7 or equivalent  windows


Material: White float glass
Diameter: +0/-0.2mm
Length, width:  ±0.3mm
Thickness: ±0.20mm
Surface Quality: <60-40 scratch/dig
Parallelism: <1 arcmin

Coating:
Windows with suffix "AV2" are coated on one or  both faces with:
Extended broadband multilayer antireflective coating <0.5%@450-900nm 
Windows with suffix "AV8" are coated on one or both faces with:
Single layer MgF2 AR, R.avg<1.5%@425-680nm
Windows with suffix "AI2" are coated on both faces with:
Telecom grade AR coating 1050-1700nm Ravg<0.5%
Windows with suffix "IO2" are coated on one face with:
20 ohm/SQ inch, T.avg>68%@400-700nm

Typical processes that we can offer for whitefloat glass substrates are as follows:

  • Large 1000x1000mm single layer AR sheets available for custom sizes.
  • Stock sheets can be edged to custom diameters.
  • CNC shaping of glass to unusual shapes and designs.
  • Stock sheets can be cut to custom square and rectangular apertures.
  • Water jet cutting to special shapes and sizes.
  • Drilling holes for mounting onto walls etc.
  • Rebating of edges of diameters, squares and rectangles.
  • Laminating for polarisers etc.
  • Special AR coating, beamsplitter coatings and mirror coatings.
  • Sandblasting of special patterns.
  • Screen printing.
  • Toughening of all shapes and sizes.
  • Glass bending and shaping to unusual shapes.
  • Edge polishing.
  • Mounting options.

Coatings:
Windows with suffix "AV2" are coated on one or  both faces with:
Extended broadband multilayer antireflective coating <0.5%@450-900nm 
Windows with suffix "AV8" are coated on one or both faces with:
Single layer MgF2 AR, R.avg<1.5%@425-680nm
Windows with suffix "AI2" are coated on one face with:
Telecom grade AR coating 1050-1700nm Ravg<0.5%
Windows with suffix "IO2" are coated on one face with:
20 ohm/SQ inch, T.avg>68%@400-700nm

Coating - Hydrophobic & Oleophobic

Stock Optics

Get a Custom Quote

Part No. MaterialCoatingCoated SidesDiameter
(mm)
Length
(mm)
Width
(mm)
Thickness
(mm)
Thick
(mm)
Price
(Ex.VAT)
Buy
WGW1000 White float windowUncoated101 £8.95
WGW10000 White float windowUncoated1006 £34.95
WGW10009-AV8 White float window[email protected]Both1004 £34.95
WGW1000-AV2 White float window[email protected]One101 £10.95
WGW100100 White float windowUncoated1001003 £25.95
WGW100100-AV8 White float window[email protected]One1001003 £26.95
WGW100101 White float windowUncoated1001001 £23.45
WGW100109-AV8 White float window[email protected]Both1001003 £27.45
WGW1011-AV2 White float window[email protected]Both101 £11.95
WGW1500-AV2 White float window[email protected]One151 £13.95
WGW1511-AV2 White float window[email protected]Both151 £14.95
WGW1600 White float windowUncoated161 £9.95
WGW2500 White float windowUncoated253 £16.45
WGW2500-AV8 White float window[email protected]One253 £16.95
WGW2511 White float windowUncoated251 £12.45
WGW2511-AV2 White float window[email protected]One251 £16.45
WGW2515 White float windowUncoated25151 £8.95
WGW2515-AV2 White float window[email protected]One25151 £10.95
WGW2516-AV2 White float window[email protected]Both25151 £11.45
WGW2522-AV2 White float window[email protected]Both251 £17.45
WGW2525 White float windowUncoated25251 £9.45
WGW2525-AV2 White float window[email protected]One25251 £12.95
WGW2526-AV2 White float window[email protected]Both25251 £13.45
WGW2599-AV8 White float window[email protected]Both253 £17.45
WGW4000 Uncoated406 £24.95
WGW4000-AV8 White float window[email protected]One403 £18.45
WGW4011 White float windowUncoated401 £13.95
WGW4025 White float windowUncoated40253 £11.45
WGW4029-AV8 White float window[email protected]Both40253 £12.95
WGW4099-AV8 White float window[email protected]Both403 £18.95
WGW5000 White float windowUncoated503 £19.95
WGW5000-AV8 White float window[email protected]One503 £20.45
WGW5050 White float windowUncoated50501 £12.95
WGW5050-AV2 White float window[email protected]One50501 £23.30
WGW5051 White float windowUncoated50503 £13.95
WGW5051-AV2 White float window[email protected]Both50501 £29.90
WGW5059-AV8 White float window[email protected]Both50503 £15.45
WGW5099-AV8 White float window[email protected]Both503 £20.95
WGW6500 White float windowUncoated653 £21.45
WGW6500-AV8 White float window[email protected]One653 £22.45
WGW6599-AV8 White float window[email protected]Both653 £22.95
WGW7500 White float windowUncoated753 £23.45
WIW2000-I02 White float windowITO (20 ohm/SQ inch)One201 £12.45
WIW2500-I02 White float windowITO (20 ohm/SQ inch)One251 £12.95
WIW4000-I02 White float windowITO (20 ohm/SQ inch)One401 £14.45
WIW5000-I02 White float windowITO (20 ohm/SQ inch)One501 £15.45
WIW5050-I02 White float windowITO (20 ohm/SQ inch)One50501 £13.95
WGW3011 White float windowUncoated30301 £10.45
WGT1000-AI2 White float window[email protected]Both101 £13.95
WGT1003-AI2 White float window[email protected]Both103 £18.95
WGT1004-AI2 White float window[email protected]Both104 £20.00
WGT2500-AI2 White float window[email protected]Both251 £19.45
WGT2503-AI2 White float window[email protected]Both253 £22.50
WGT2504-AI2 White float window[email protected]Both254 £24.50
WGT2523-AI2 White float window[email protected]Both25253 £18.00
WGT2524-AI2 White float window[email protected]Both25254 £19.85
WGT2525-AI2 White float window[email protected]Both25251 £16.85
WGT5000-AI2 White float window[email protected]Both501 £37.95
WGT5003-AI2 White float window[email protected]Both503 £41.95
WGT5004-AI2 White float window[email protected]Both504 £43.75
WGT5050-AI2 White float window[email protected]Both50501 £35.55
WGT5053-AI2 White float window[email protected]Both50503 £39.25
WGT5054-AI2 White float window[email protected]Both50504 £39.25
WGB1106 White float windowUncoated10.85.80.7 £2.45

Get a Custom Quote

Get in touch

Our Multi-Lingual Sales Team are here to help with your requirments:

UK +44 (0)1622 859444
UK +44 (0)1622 850614
UK +44 (0)1622 851078
+1 401 583 7846

International Shipping

We are able to ship to most countries at good rates, please click here for more info.

This site requires cookies in order to work properly. By continuing to use this site you are agreeing to our cookies policy.

Accept

Website Security Test