Silicon (Si) is a crystalline material like germanium primarily used within consumer electronics for microchips, as well as, extensive use in the semiconductor industry. Silicon is an excellent choice for windows and lenses in the 3μm to 5μm MWIR spectral bands for use in imaging, biomedical and military applications. Silicon optics are more heat resistant than germanium ones, as operating germanium in temperatures higher than 100°C leads to reduced optical properties.

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Calcium fluoride (CaF2) optics are ideal for a broad range of Ultraviolet (UV), Visible, or Infrared (IR) applications. Its low refractive index reduces the need for anti-reflective coatings. Its application ranges from thermal imaging systems to excimer lasers making it a very versatile material for ultraviolet (UV) to infrared (IR) frequencies.

Jun 19, 2023 — How do UV Lasers Work? By passing a standard wavelength laser (1064 nm) through a non-linear crystal, the wavelength is reduced to 532 nm. This ...

NIR and SWIR together are sometimes called "reflected infrared", whereas MWIR and LWIR are sometimes referred to as "thermal infrared".

Jan 5, 2024 — For SAE, sizes like ⅜ inch or ½ inch are common, while in the metric system, sizes like 10mm or 12mm are often used. Knowing these common sizes ...

IR transparentplastic

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Zinc sulfide (ZnS) performs best between 8 to 12µm region. Although a lower cost relative to ZnSe, it does not have the longer transmission range. As a strong and stable material, ZnSe has high resistance to particulate abrasion making it an ideal solution for IR windows on aircraft platforms.

20241010 — The meaning of F-NUMBER is the ratio of the focal length to the aperture in an optical system.

When it comes to prescription eyewear, various lens companies offer a range of options to cater to different vision needs and preferences.

What istransparentto infrared light

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Supplied with serial-numbered certificate from an ISO 17025 calibration laboratory indicating traceability to NIST™ standards.

Is silicontransparentto infrared

Flexible, lightweight and unbreakable, the Fresnel lens can be used to start fires or barbecues, for solar cooking or solar pyrography. The lens works like ...

IR fused silica is virtually free of OH-ions providing superior transmittance at the 2.7μm wavelength “water band” region where standard UV grade fused silica absorbs light. The low OH content (<1 ppm) expands the overall usable range of fused silica to 3.6 microns. As with other fused silica designations, IR grade also shares the same outstanding homogeneity, bubble characteristics, low coefficient of thermal expansion, and chemical resistance.

There is another group of materials that perform well in the IR but require a high amount of safety precautions during manufacturing due to their harmful material makeup. Chalcogenide glass is a glass containing one or more chalcogens (sulfur, selenium and tellurium, but excluding oxygen). Such glasses are covalently bonded materials and may be classified as covalent network solids. Chalcogenide glass remains amorphous while exhibiting optical transparency over the full IR region of 2-20µm.

IRabsorbing material

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We keep science moving forward by offering over 2.5 million products and extensive support services to the research, production, healthcare, and science education markets. Count on us for an unrivaled selection of lab, life sciences, safety, and facility management supplies—including chemicals, equipment, instruments, diagnostics, and much more—along with exceptional customer care from an industry-leading team that’s proud to be part of Thermo Fisher Scientific.

When dealing with the infrared region, it is important to know this part of the electromagnetic spectrum breaks down into further sub-sections.

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Infrared plastic

Custom IR windows are popular because they allow for the transmission of infrared light while providing protection to sensitive infrared sensors and systems. IR windows, stepped windows, lenses, and other precision optics made from materials such as calcium fluoride, germanium, magnesium fluoride, sapphire, silicon, zinc selenide and zinc sulfide, which are highly transparent in the infrared spectrum and possess excellent durability and thermal stability. IR precision optics are ideal for a range of applications, including thermal imaging, spectroscopy, and environmental monitoring. Their ability to withstand harsh environments while maintaining high optical performance ensures accurate and reliable measurements in various industrial, military, and scientific settings.

Measure the outside diameter of stoppers, the inside diameter of tubing, and the depth of vials. Read differential measurements with the touch of a button.

ITAR registered and compliant, Esco manufactures ITAR optics for all of its customers with the strictest confidentiality.

IR transparentliquids

Infraredtransparent materialschart

Ideal for measuring the outside diameter of stoppers, the inside diameter of tubing, and the depth of vials. Set jaws closed, or read differential measurements with the touch of a button.

Feb 1, 2023 — CdTe photovoltaics, a type of thin-film solar cell made from a combination of cadmium, tellurium and other materials, offers distinct advantages ...

IR transparentglass

Germanium (Ge) is a grayish non-transparent crystalline material and one of the most commonly used infrared materials. It is an optimal material for night vision and thermal imaging systems in the MWIR and the LWIR band. Germanium transmission performs best between 8 and 12µm. Ge has a low optical dispersion and a high refractive index which makes it an ideal solution for a wider field of view lenses. Its crystal structure is similar to diamond and when a DLC coating is applied (Diamond Like Carbon), it becomes very durable against outdoor elements and harsh environments.

Magnesium fluoride (MgF2) is also a crystalline material that transmits well from the UV through the MWIR spectral bands (0.1 to 7.0μm). Magnesium Fluoride has relatively low cost; however, is thermally sensitive and requires special handling considerations.

Newport's Magnesium Fluoride Optical Windows are transparent over a very wide 120 nm to 8 µm spectral range. Magnesium Fluoride is durable, resistant to both ...

In conclusion, there are many material options available for infrared capabilities and whether you need a IR windows, lenses, or freeform optics, we are available to help you find solutions to your objectives. Our manufacturing team can fabricate windows, prisms, lenses, aspherical lenses, and prototypes all in-house. Please reach out to us on your next project today at sales@EscoOptics.com.

Sapphire crystal (Al2O3) is an optimal choice due to its mechanical strength, scratch resistance, and its hardness which is second only to diamond. It is used in ultraviolet (UV) and visible wavelengths beginning around 150nm and also performs well in IR to around 5µm. The downside to sapphire is the high material and processing costs.

Zinc selenide (ZnSe) is another common material that is used in both visible and IR (MWIR & LWIR) from 0.45 to 21μm.  It is a light-yellow solid compound comprised of zinc and selenium. It is very similar to zinc sulfide, but has a slightly higher refractive index and is structurally weaker