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Diamond turning is an Aspherics best friend! Knight Optical can offer custom made Diamond turned aspheric lenses for use in missile guidance systems, night vision/thermal Imaging cameras and other military based and commercial infrared systems. We supply a range of diamond turned germanium aspherics for a range of applications. All individually QA checked and metrology tested for quality to ensure parts meet customer specification. Supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications. The benefit of Diamond Turned Aspherics, 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 Read PDF for full specification… Material::Germanium, ZnSe, Caf2, Silicon, Zinc Selenide (For LWIR) Diameter::Up to 200mm dia +0, -0.02mm Thickness::+/- 0.2mm Flatness::< 1/2 wave over 90% aperture Surface Quality::< 40-20 scratch/dig Parallelism::5 arcmin Coating::AR/DLC (3-5 micron, 7-14 micron, 10-12 micron)

As UVC sterilisation becomes more prevalent, Knight Optical can offer UV domes to house LEDs and LED arrays, as well as other light sources. We stock ready-to-order 50mm and 100mm UV fused silica domes with high transmission down to 185nm, meaning it encompasses the traditionally used UVC light sources – KCl excimer lamps (222nm), mercury lamps (254nm) and LEDs (265nm, 273nm and 280nm). Knight Optical can also provide custom domes, including with a flange for easier mounting, manufactured from UV fused silica. Also available are optical coatings to enhance the performance of the dome. Quality Assurance All optical components are tested in our state-of-the-art metrology laboratory to ensure they meet every specification, and then 100% visually inspected by our highly trained quality technicians. Knight Optical prides itself on the quality of our optical components, and you can be confident that our products will fit seamlessly into your UVC system.

Linear sheet polarizers are used for a broad range of applications including the production of LCD monitors and TVs, photography and other lighting and entertainment systems such as projectors. Our UV and IR sheet polarizers extend the spectral range down to 290m for the HNP’B replacement material and HR is used between 800nm to 2000nm. We have extensive stock of HR material in 76.2mm square sheets. The range from 800-860 the HN7 type offers superior performance at a reduced price. Working below 800nm HN22 is an ideal choice. Knight Optical supply linear sheet type polarizers in a range of types. These sheet polarisers were formerly supplied by Polaroid/3M under the Vikuti brand. Although these sheets have since been made obsolete by the manufacturer, Knight Optical holds substantial stock of the original material including HN32, HN38 and HN42, and performance HN22, HN38S and HN42HE high extinction sheets Read PDF for information

Environmental Sustainability Pink Elephant Group believes that businesses should be accountable for good environmental practises and operate in a sustainable manner. We are deeply devoted to decreasing our environmental effect, and constantly improving our performance is an intrinsic and basic component of our business practises and operations. We are devoted to consistently improving environmental management, including monitoring and reducing waste, minimising pollutants and emissions, training employees, and assessing our own environmental performance. We are quite proud that less than 5% of everything we collect ends up in a landfill due to our profound concern for the environment and our thorough attention to every good collected by Pink Elephant Group and most products are either reused or recycled.

Knight Optical can offer UV Fused Silica Lenses for Solid State Laser applications. UV FS is a prime choice for lenses in use with Solid State Lasers due to its consistently high transmission in the UV/VIS/NIR regions. This means that it can be used with a range of different laser types, such as Titanium-doped sapphire (tuneable to 660-1080nm) or Alexandrite (tuneable to 700-820nm) with very little change in performance. UV FS is comparable to N-BK7 or other similar optical glasses in its performance, having a very similar average transmission over the VIS range up to approximately 2000nm and a slightly lower refractive index. The Abbe constants of UV FS are also very similar to that of N-BK7, although slightly higher. Read PDF for full specification Material::UV Grade Fused Silica Operating Wavelength:587nm Diameter Tolerance::+0 / -0.10mm Centring Tolerance::<5 arc min Focal Length Tolerance::± 0.2mm (<10mm) ±2.0% (10mm – 1000mm) Centre Thickness Tolerance:±0.2mm

Knight Optical can offer UV Fused Silica Lenses for Flame Detection Applications. UV Fused Silica can be used in Flame Detection Applications, due to its high transmission into the NIR range (approximately <92% avg 400-2000nm) meaning that a clear distinction can be made between different wavelengths of light. UV FS also has a very low coefficient of thermal expansion 0.55x10-6K-1 at 300K) compared to N-BK7 (7.1x10-6K-1), meaning that it can still provide optical performance under high temperature. UV FS also has a high melting point compared to N-BK7, providing further protection for your application in high temperature environments. UV FS is comparable to N-BK7 or other similar optical glasses in its performance, having a very similar average transmission over the VIS range up to approximately 2000nm and a slightly lower refractive index. The Abbe constants of UV FS are also very similar to that of N-BK7, although slightly higher. Read PDF for more info Material::UV Grade Fused Silica Operating Wavelength::587nm Diameter Tolerance::+0 / -0.10mm Centring Tolerance::<5 arc min Focal Length Tolerance::± 0.2mm (<10mm) ±2.0% (10mm – 1000mm) Centre Thickness Tolerance::±0.2mm Surface Figure::3/ 3 (1) Surface Quality: :<40-20 Scratch/Dig Coating::Optional