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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.

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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.

Without an AR coating, lenses have noticeable glare, which means light reflects off their surfaces, limiting the quantity of light traveling through the lens.

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.

Optical density is the ability of a material to transmit light through it. It measures the speed of light passing through a substance and is affected by the ...

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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.

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.

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.

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

Esco Optics, Inc. 95 Chamberlain Road, Oak Ridge, New Jersey 07438 Tel: 1-800-922-3726 | Fax: 1-973-697-3011Sales@EscoOptics.com

Apr 2, 2024 — In fluorescence microscopy, a sample is first labeled with a specific dye containing fluorescent molecules and then illuminated with a light ...

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As the leader for military and defense optics in the United States, Esco Optics adheres to the International Traffic in Arms Regulations.

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.

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.

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• Template 4 — Temperature record sheet. • Template 5 — Log for 2-hour/4-hour ... Condition/temp. Corrective action. Checked by. Check: •. Goods received ...

FLIR · FLIR E54 Thermal Imaging Camera. Teledyne FLIR E54 camera with FLIR MSX® technology is an essential tool for electrical, mechanical, and building ...

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

Jun 24, 2022 — After more than 2 years of constant viral pandemic news coverage, it is easy to forget that we did not even know that microorganisms, invisible ...

SPECIALTIES: The eye doctors and staff at Optical Solutions strive to provide our patients with the highest level of eye care possible through accurate diagnosis, one-on-one personalized attention, and individualized eye care solutions. We value the trust our patients put in us and are dedicated to meeting your vision needs in a respectful, caring, and responsible team environment. Optical Solutions carries a wide selection of traditional eye wear, as well as safety and sunglasses. - Comprehensive Eye Exams - Medical Eye Care - LASIK and Cataract Evaluation - Contact Lens Fitting - Industrial Safety Vision - Sports Vision - Eyeglasses - Contact Lenses - Prescription Safety Glasses - Sunglasses

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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.

Confocal microscopes work by excluding light from outside the desired focal plane by using a pinhole to select light only from that desired ...

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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.

Esco Optics is a leading manufacturer of custom and catalog optics, precision optical components, and ITAR optics in the United States.

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

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

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