Sapphire window

Sapphire is a single crystal material that has excellent light transmission properties and can work in the visible and infrared light ranges. It has high hardness, high corrosion resistance, high heat resistance and good mechanical strength. It has a good transmittance in the visible range, usually more than 80%. In the infrared range, especially in the near infrared and mid-infrared bands, its transmittance is very high, which can reach more than 90%.

Sapphire window is one of the basic optical components in optics, usually used as a protective window for electronic sensors or detectors of the external environment. It is used to separate the two sides of the environment, such as separating the inside of the instrument from the outside, so that the inside and outside of the instrument are isolated from each other, thus protecting the internal devices. And it’s often used in optical instruments,laser optical systems,infrared systems, optical communication systems etc.

Our Company can provide round ,square and rectangular optical window with dimension from 2-500mm and thicknesses from 0.12-100mm (accuracy up to 20-10, 1/10L@633nm),coating AR, BBAR, AF or upon request.

Technical parameters of sapphire window

Material properties of Sapphire

Transmission curve

Sapphire (Al2O3)- with a large transmission range of 150nm-4.5µm sapphire is a good generalist but where sapphire truly shines is its material robustness. You can use sapphire in almost any harsh environment and it will take the punishment. From extreme resistance to thermal conductivity, a high dielectric constant and chemical resistance, sapphire will take almost anything thrown at it and ask for seconds. Only behind diamond in terms of material hardness but unlike diamond can be made extremely thin, which further improves transmission.