Visible (VIS) Antireflection (AR) Coating
AR high-transparency anti-reflective glass achieves up to 99% transmittance with <1% reflectance, significantly outperforming ordinary glass (4% single-side, 8% total reflectance). Two methods enable low reflectivity: AR glass employs optical multilayer interference coatings to eliminate reflections through destructive interference, while AG glass utilizes micro-roughened surfaces to scatter incident light into diffuse reflection without compromising transmittance. Cases of AR VIS Coating Visable glass coated T=25%375-T＞90%450-800 Visable glass coated AR Coating Ravg>99%@650nm-1050nm
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Large electron-beam evaporation optical coating equipment HCEB-2700 Optical Coatings Hcvac
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This series was developed for mass-production market needs. Production-proven equipment offers high productivity and the lowest ownership cost for cost-optimized volume production of optical components. It can produce AR, UV/IR cutoff filters, AF, hard coatings, decorative coatings, ITO coatings, bandpass filters and HR coatings. Equipped with an electron gun, pocket-type, kidney-shaped or annular crucibles and an impedance-type evaporation source. Optical or quartz-crystal thickness monitoring enables automatic control of deposition rate and coating processes. Optional RF/Kaufman-type/Hall-type ion sources. AR coatings (substrate glass transmittance >91.5%): in the 420-680nm band, single-sided average transmittance >95% and reflectance less than 0.5% (average); double-sided average transmittance >98% and reflectance less than 0.5% (average). AS/AF coating test standards: initial contact angle 115±5°; steel-wool abrasion test using 0000# steel wool over 10*10mm, 40 strokes/min, load 1Kg: contact angle greater than 100° after 5000 reciprocating rubbing cycles; eraser test using a 6mm-diameter eraser, 25 strokes/min, load 1Kg: contact angle greater than 100° after 2500 reciprocating rubbing cycles. Note: glass test samples must be precision-polished glass specifically for touchscreen cover plates, with a clean, smooth surface.
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Antireflection-coated sapphire window Optical Coatings Uni-lens
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Sapphire windows retain high strength at elevated temperatures, with good thermal properties and excellent transparency. They resist common acids and alkalis at temperatures up to 1000°C and hydrogen fluoride below 300°C. These properties support use in harsh environments requiring optical transmission from vacuum ultraviolet to near infrared.
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BK7 antireflection-coated window Optical Coatings Uni-lens
Material [Question 1 in the body text]: N-BK7, Schott borosilicate Dimensional Tolerance [Standard; No unit stated in the table]: +0.0/-0.2 Thickness Tolerance [Standard; No unit stated in the table]: ±0.2
BK7 windows are the most common window type, with good performance in visible and near-infrared bands. BK7 windows are ideal where transmitted-beam deviation must be minimized and are suitable for AR coatings.
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Colored glass modifies the spectral characteristics of optical radiation for scientific experiments and industrial applications requiring such changes. Colored-glass filters can be combined to modify the passband or increase attenuation.
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