At Shanghai Optics we design and manufacture a wide variety of optical IR components. Our state of the art equipment allows us to achieve unparalleled precision and surface quality, and every piece we manufacture is subject to stringent quality controls.
Our diamond turning machines enable us to produce sub-nanometer level surface finishes and form accuracies to the sub-micrometer. Each diamond-turned IR optical component is manufactured individually, and can be customized to your exact form specifications for IR applications.
Our diamond fly cutting machine allows us to generate precision diffraction gratings and other linear elements on optical elements with contoured diamond shapes.
We offer a wide range of IR substrates, including Ge, Si, ZnSe, ZnS, ZnS , CaF2, BaF2,and GaAs. Our lenses and windows are available with multiple anti-reflection coating options that can increase durability and improve performance.
Germanium Ge is a good choice for optical lenses, windows, and prisms, and it performs well without infrared anti-reflection coatings. It has a high index of refraction (above 4) and transmits from 2 to 13µm. The high Knoop Hardness (780) makes it ideal for applications where durability is key, but it can only be used at temperatures below 100°C.
Barium fluoride BaF2 is often used for IR spectroscopy, as its properties include wide broadband transmission and a low index of refraction (1.48). BaF2 can remain stable up to 800°C, but is resistant to thermal shock and should be used in a dry environment. Knoop Hardness is 82.
Zinc Selenide ZnSe infrared optics have a high resistance to thermal shock, which makes them a good choice for thermal imaging systems and CO2 laser systems. They are not as durable as other options and we do not recommend them for optical systems in harsh environments.
Magnesium Flouride MgF2 is more rugged and durable than ZnSe, and offers very good transmission from 120nm to 7μm. It has a density of 3.11 g/cm3, a Knoop hardness of 415, and is resistant to both chemical etching and laser damage.
Gallium Arsenide GaAs optical components transmit over 40% between 2µm to 15µm and are very hard and dense. A Knoop Hardness of 750 makes them comparable to Germanium optics. Our GaAs lenses and windows are coated with a broadband antireflective optical coating to improve performance.
IR grade fused Silica has a reduced amount of OH- ions as compared to other grades of Silica, and this provides a higher transmission in NIR wavelength ranges. Fused silica offers consistent, repeatable performance and a low thermal expansion coefficient. IR material is more expensive to produce than UV-grade fused Silica but is still more budget-friendly than other options.
We are able to customize IR lenses, windows, filters, and other optical components to meet the requirements of your application, and our design team can work with you as you go from prototype stage to production. Our wide range of choice in substrates and optical coatings, coupled with state of the art machinery and metrology lab, ensure that your device will be fitted with the highest quality optics.