Infrared optics - Import export

Germanium wafers are a semiconductor material & therefore are a smart choice for microelectronics. Due to its unique electric properties, it is widely used for sensors, solar cells and infrared optical applications. The wafers are also great for microelectronics as the space is limited and being available in 500μm or less it makes it perfect to achieve the high quality results required. It’s thermal conductivity makes it a good alternative to silicon. Our stock wafers are produced as thin as 500μm and provide exceptional surface quality. However, we can manufacture to a fully customised specification with a wafer thickness as little as 10 μm. Typical specifications of our germanium wafers are: 10mm – 150mm in diameter <500μm in thickness Doped and undoped Germanium

Knight Optical offer a range of Stock Sapphire Windows, for use within Infrared Systems. Knight Optical can offer Sapphire (Al2O3) Optics for Infra-red systems over the waveband of 0.2 to 5µm. We offer Sapphire optics for UV, Visible, NIR (0.9 to 1.5µm) and Mid-Waveband Infra-Red (MWIR, 3 to 5µm) Imaging Systems. Sapphire has hardness of about HK2000, which makes it a better choice for windows and outer elements of lens systems. Sapphire has good transmission in the MWIR band, and can be used with optical glass in the NIR, and with Silicon or Germanium in the MWIR, to form well corrected doublets and lens systems. These systems include, for example, Forward Looking Infra-Red (FLIR) systems, and thermography. Al2 O3 has a refractive index of about 1.9288no 1.9174ne at 200nm through to 1.623no 1.615ne in the IR (5µm). This pairing will allow for the design and manufacture of a colour corrected lens that can be used in broad spectrum thermal imaging systems.

Diamond turning is an Aspherics best friend! Knight Optical can supply you with a custom made Diamond turned aspheric lenses. Diamond turned aspheric optical lenses are typically used in missile guidance systems, night vision/thermal Imaging cameras and other military based optics and commercial infrared systems (IR). The benefit of Diamond Turned Aspheric optics, are that lens shapes can be manufactured very accurately without an expensive tooling cost except for the diamond bit; and is cost efficient for small quantities. Which are ideal for use within the Defence and Aerospace Industry. Knight Optical offers diamond turned aspherics from a range of infrared materials including Germanium (Ge), Calcium Fluoride (CaF₂), Zinc Sulphide (ZnS), Zinc Selenide (ZnSe), Aluminium (Al) and chalcogenide glasses like AMTIR (Ge33As12Se55 ). For more details read the PDF...

Resistance for mirrors

The ScanIR®3 thermal scanner is designed for a wide variety of noncontact temperature measurement applications, including those in harsh industrial environments. Its robust housing incorporates standard water-cooling and air purge and features built-in laser sighting. A rugged processor box provides universal input and output (I/O) capabilities in the field without the need for an external computer. The ScanIR3 linescanner and thermal imaging system has one of the fastest scan speeds in the industry and offers complete data about even the highest-speed manufacturing processes. Unlike point sensors that measure a single point, the linescanner measures multiple temperature points across a scan line. Its motorized mirror scans at rates up to 150 lines per second, allowing rapid detection of temperature non-uniformities and hot spots. Rotating optics collect infrared radiation at 1024 points within a 90-degree field of view, and industry-leading optical resolution

The Periodic Element Guys present 99.9999% Pure Germanium Crystalline. Germanium is an important semiconductor material. It is commonly doped with arsenic or gallium at the level of one part per 1010 for electronics. Germanium is also used as an alloying agent, a catalyst, and as a phosphor for fluorescent lamps. The element and its oxide are used in highly sensitive infrared detectors and other optical devices. The high index of refraction and dispersion of germanium oxide has led to its use in glasses for use in microscope and camera lenses. Organic germanium compounds have relatively low toxicity to mammals, but are lethal to certain bacteria, giving these compounds potential medical importance.