Soda-lime float glass windows
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Soda-lime float windows are cost effective medium performance windows however they have limitations transmitting around 80% average from 400-700nm with poor performance in NIR.
Soda-lime float glass is a sheet material that is relatively flat. Float glass is made by the float process invented by Pilkington Glass in the 1950’s. Float glass is manufactured by floating molten glass onto a bed of molten metal, usually tin. Using float glass process of manufacture achieves a flat surface with a uniform thickness of material across the aperture.
Soda-lime float glass are excellent for use in standard non-scientific window applications such as protecting visible CCTV camera or windows for picture framing applications and flat panel displays. They are also an excellent substrate for optical mirrors as transmission properties are not important.
Sheet glass as soda-lime float glass is sometimes termed come as large sheets over 2m square and in a range of thickness from 1mm to over 20mm thk. The glass surfaces 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. Soda-lime is also an excellent substrate for making tempered or toughened windows for increased strength and high temperature applications.
Low-iron type Float glass window material is also used for a standard “dip coated” AR coating window we stock which is ideal for lower specification low reflection applications where small residual reflection is required. This range of standard low-iron white float windows work efficiently across the visible into the near infrared region. They are available uncoated or AR coated one face or both faces (white float windows) The 1mm thk AR coated versions are coated with a BBAR coating <0.5% over 450-900nm. Also listed is Indium Tin Oxide (ITO) coated windows which is used for displays, electric heating, EMI shielding etc. (ITO coated windows)