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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)

Knight Optical can offer Circular Sheet Polariser for use within Photographic Applications. We supply a range of Circular Sheet Polariser 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. Knight Optical supply precision optical components to customers within Photographic Applications. Our Circular Polarisers consist of a quarter wave plate cemented to a linear polariser. While a linear polariser may be used to reduce glare during photography (such as reflection from the surface of a body of water), autofocus systems struggle to correctly focus on linearly polarised light. With the addition of the quarter wave plate, this has little impact on the intensity of incident light to the sensor, but it makes autofocussing much easier. For more information read PDF… Shapes: :Circular Polarisers, Square Polarisers Dimensional Tolerances::+/- 0.5mm

Knight Optical offer a range of Stock Sapphire Windows, and custom for use within Airborne LiDAR Systems. These are systems used in surveying for topographical measurements. The data accumulated can be used to generate a Digital Terrain Model or a Digital Elevation Model which are 3D representations of terrain. Sapphire (Al2O3) is one of the hardest minerals and optical materials available for use in the range from UV up to 5µm. Making it ideal as a protective window for airborne systems which may be utilised in harsh environment or against birds! Sapphire is grown by various methods from seed samples. Sapphire can be polished to a high standard, but as it is the second hardest mineral on Earth it must be subject to high forces to polish. Therefore, windows made from Sapphire must have a thickness to diameter ratio of at least 10:1, that is, greater For more information read PDF…. Material::Sapphire (AL2O3) Random or C-Cut grades Diameter Tolerance::+0.0/-0.20 mm Length/Width Tolerance::+/- 0.10mm Thickness Tolerance::+/-0.10mm Wavelength Range::0.17 – 5.5µm Transmission::Tavg=85% dependant on substrate thickness Surface quality: :<40-20 scratch/dig Coatings::AR coating options to meet your wavelength requirements

Reliable supplier of Domes for underwater ROVs for surface & deep water - Knight Optical has successfully launched a range of Stock Optical Domes for Submersible ROVs underwater imaging, sensing and exploration applications, where protection of electronic sensor systems from harsh liquid and gas environments is essential. A dome is essentially a window that has two parallel curves faces. Our domes ensure high clarity and transmission in the UV-NIR and FarIR spectrums allowing for accurate measurement. Knight Optical is a trusted, established and reliable supplier to manufacturers of underwater ROVs for surface and deep water exploration. With our excellent record delivering quality, metrology tested optical domes & windows; we like to think we are your best solution for custom ROV dome and window solutions. Our products are used by satisfied customers in the ROV industry worldwide. Contact our experts and find out why! For more information read PDF

Knight Optical can offer Fire-Polished Aspheric Lenses for use within Optical Systems. We supply a range of Fire-Polished Aspheric lenses 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. Knight Optical supply precision optical components to customers with Optical systems. Aspheric lenses are used to correct for spherical aberrations and can be as effective a multi-lens system while taking up less physical space and reducing weight and cost. As such these lenses are often used in military applications, such as night vision goggles or missile guidance systems For more information read PDF ….. Material::B270 or equivalent, Borosilicate Dimensional Tolerances::+/- 0.25mm Surface Quality: :< 60-40 Scratch/Dig Coating::Antireflective coatings for application bandwidth (if required)

Knight Optical can offer KG1 Filters for use in Heat Sensitive Systems. We supply a range of KG1 Filters 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. Knight Optical supply precision optical components to customers in Heat Sensitive Systems. KG1 Filters are designed to transmit visible wavelengths to absorb heat causing infrared wavelengths preventing it from reaching your system. Care has to be taken in the design of systems using KG1 as the material is an absorptive blocker and will heat up with use. To help alleviate the heating issue, our KG1 filters are thermally toughened For more information read PDF ….. Material::Schott KG1 Shape::Circular Filter, Square Filter Dimensional Tolerances::+/- 0.1mm Parallelism::< 5 arc minutes Surface Accuracy: :< 5(2) @ 633nm Surface quality::< 40-20 Scratch/Dig

Knight Optical can offer Z-Cut Quartz Windows for use in the security industry. We supply a range of Z-Cut Quartz windows for a range of applications – all individually QA checked and metrology tested for quality to ensure parts meet customers’ specifications. What’s more, our Z-Cut Quartz Windows are supplied in a range of sizes & shapes with custom coatings tailored to meet your individual applications. We supply precision optical components to customers within the security industry. Z-Cut Quartz windows can be used in the terahertz region for non-invasive scanning of individuals. These types of scans can detect objects such as weapons & are used in airports and other high-security locations. Quartz is a birefringent material, which affects the polarisation of light passing through it, and is cut specifically along the Z-axis to maintain polarisation. Z-Cut Quartz is used in applications where quartz is an ideal material; yet changes to polarisation are required Read PDF for more...

Knight Optical can offer Meniscus Lenses for use within Optical Systems. We supply a range of Meniscus lenses 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. Knight Optical supply precision optical components to customers with Optical systems. Any spherical surface will introduce spherical aberrations to an optical system. Meniscus lenses are designed with the curvatures of the lens in mind to minimise these spherical aberrations. This effect is more noticeable with higher index glasses as spherical aberrations increase with the change in index. Meniscus lenses can be an effective compromise on cost and aberration when compared to using aspheric lenses or multiple lens. Fore more information read the PDF…. Material::N-BK7 or equivalent, UV Fused Silica, SF11 or equivalent Shape::Positive Meniscus, Negative Meniscus Dimensional Tolerances::+/- 0.1mm Centering::< 3 arcminutes Surface quality::< 40-20 Scratch/Dig Surface Figure::< 5(1) @ 633nm Coating::Antireflective coatings for application bandwidth (if required)

TE IS AVAILABLE ON OUR STOCK LIST Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

Knight Optical can offer Rhomboid Prisms for use within Imaging Applications. We supply a range of Rhomboid Prisms 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. Knight Optical supply precision optical components to customers within Imaging Applications. Rhomboid Prisms are designed to displace a beam laterally while maintaining its direction. Rhomboid prisms rely on total internal reflection and so do not often need to be coated For more information read the PDF… Material::N-BK7 or equivalent Dimensional Tolerances::+/- 0.2mm Angles::+/- 3 arc minutes Surface Figure::< 1 waves Surface quality::< 40-20 Scratch/Dig Coatings::< AR Coatings available on request

WE HAVE LOADS OF VISHAY IN STOCK. VISHAY CAPACITORS / SEMICONDUCTORS Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

We have all types of wires whether it is for indoor or outside use our heatshrinks is just one of our wide range of products we have. Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

ball lenses are spherical lenses mostly made out of High Refractive Index Glass - Knight Optical offer a range of Stock Ball Lenses and Half Ball Lenses, for use within Fibre Optics, Signal Coupling and Barcode Scanners. As the name suggests ball lenses are spherical lenses mostly made out of High Refractive Index Glass such as Sapphire, and LASFN-9 Glass. The reason ball lenses are most commonly used is for their ability to couple light in and out of fibres. The key feature of ball lenses is their short back focal length allowing for precision coupling where size or space is a limiting factor in the system. Ball lenses are typically used in pairs with one lens acting as a collimator for the second to focus the light back into the coupled fibre. Where a more compact solution is required a half-ball lens is typically more suitable. We hold a large inventory of Ball Lenses. •Stock sizes from 0.5 5mm to 10mm diameter. •Custom sizes available to quotation. •Half Ball lenses also available. For more information read PDF…. Material::BK7 or Equivalent, Sapphire, Quartz, or Ruby Diameter Tolerance::+/-2.5µm Figure (sphericity)::1λ Focal Length Tolerance::± 0.2% (<10mm) Wavelength Range::0.17 – 5.5µm Surface quality::<40-20 Scratch/Dig

WE STOCK LOADS OF LITTLEFUSE PARTS. OUR RANGE IS FUSES, SENSORS, RELAYS AND SEMICONDUCTORS / DISCRETES. Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

Knight Optical can offer Cylindrical Lenses for use within Optical Systems. We supply a range of cylindrical lenses 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. Knight Optical supply precision optical components to customers with optical systems. Cylindrical lenses are designed to light to a straight line, rather than a point. Cylindrical lenses are often used to change the profile of laser beams, for example to correct for astigmatism and elliptic shape in diode lasers or to generate lines from single mode lasers. For more information read the PDF… Typical specs::. Material::N-BK7 or equivalent, UV Fused Silica, SF11 or equivalent Dimensional Tolerances::+/- 0.1mm Shapes::Diameter/Rectangular, Convex/Concave Centering::< 3 arcminutes Surface quality::< 40-20 Scratch/Dig Surface Figure: :< 5(1) @ 633nm Coating::Antireflective coatings for application bandwidth (if required)

We are able to Design Keypad Membranes to Spec. Please send over Specsheet to liamm@merefields.com and we can help Quote Very good prices along with fast lead time.

We offer a Very Wide Range of Brands, please send me enquiry via liamm@merefields.com or enquires@merefields.com 

WE HAVE LOADS OF RUBYCON IN STOCK. RUBYCON CAPACITORS / SEMICONDUCTORS Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

Sapphire is an incredibly hard crystal (HK1370kg/mm2), second only to diamond. Fluoresence free sapphire windows have high mechanical strength, thermal and chemical resistance and is scratch resistant, making it very desirable for operating in harsh conditions. Sapphire windows can be made thinner than alternative crystals thanks to its structural integrity and can operate up to 2030⁰C. The material transmits between the UV and IR at 0.15-5.5µm, and has a high refractive index of 1.75.. Knight Optical supply a range of quality Sapphire optical components including Fluoresence free sapphire windows, Sapphire lenses, Sapphire prisms, and Sapphire blanks either from stock or bespoke custom made to your specification for a range of applications.  Our current range includes Random Polarization Sapphire that can be used for most applications apart from UV use. Click link URL to read more …

New for 2019, Knight Optical’s newly expanded collection of Moulded Optics now further meet the demands of the most complex, high-specification projects. Drawing on our 28 years’ experience and passion for producing premium-quality components, we now provide an even greater component offering within our Moulded Optics range. From Quartz Tubes and Aspheric Lenses to sought-after Germanium Windows and Fresnel Lenses, our optics are specified for a diverse variety of applications – such as magnification and light diffusion. One of the most popular uses for Moulded Optics is light sensor devices. Connected to floodlight circuits and used to detect movement within their radar, these devices are commonplace within the defence industry and for home and workplace security usage. Their operation lies within their ability to identify infrared (IR) wavelengths emitted from objects within their field of view. Read PDF for more information…. Material: :Acrylic or PMMA Diameter: :+0.0 / -0.25 mm Thickness: :+0/-0.20 mm Surface quality: :<60-40 Scratch/Dig

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

Knight Optical can offer you the solution for your CCTV Cameras! CCTV Systems use Germanium Windows for their properties which make them ideal for thermal imaging and night vision use. Germanium Material offers excellent transmission across the IR wavelength range. Making it ideal for use within Thermal Imaging Cameras; which are used extensively in CCTV applications. Germanium typically operates in the 2µm to 14µm spectral range; that covers the LWIR (8-12μm) and MWIR (3-5μm) thermal imaging wavelength range. Our Germanium windows are available from stock, custom size and shape with Anti-Reflection coatings on one or both sides, and/or with Hard Carbon Diamond coatings. Custom coatings for Germanium windows available on you request and to your specific requirement with diameters up to 300mm diameters. Read PDF for Info Diameter Tolerance: :Up to 300mm +0, -0.02mm Thickness Tolerance::+/- 0.2mm Flatness::< 2 waves over 90% aperture Surface Quality::< 40-20 scratch/dig Parallelism: :5 arcmin Coating::AR/DLC (Diamond like coating @ 7-14 micron)

Knight Optical We offer Stock Polarisers used in the visible range in cameras/photography. We supply a range of Polarizer options 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. Linear Polarisation can be split into P-Polarised (Light where the electric field is Parallel to the plane of incidence) and S-Polarised (Light where the electric field is Perpendicular to the plane of incidence) light, where a polariser can be used to eliminate one plane of polarisation. This is done to decrease ‘glare’ (reflections on the surface) when an image is being taken, and increase the contrast. This is used often with cameras to obtain ‘better’ image quality at the expense of an image that appears slightly darker. For more information read the PDF…. Material::N-BK7 or Equivalent Diameter Tolerance::+0.0/-0.25mm Length/Width Tolerance::±0.5mm (<100mm) ±1mm (100-400mm), nominal (>400mm) Axis direction: :±2°

TYCO IS AVAILABLE ON OUR STOCK LIST Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

WE SELL A LOT OF WINSTAR LED DISPLAYS / SCREENS - Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

KO can offer Metallic Neutral Density Filters for use in Photographic Applications. We supply a range of Metallic Neutral Density (ND) Filters for a variety of applications – all individually QA checked and metrology tested for quality to ensure parts meet customers’ specifications. What’s more, our Metallic ND Filters are supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications. Our Metallic ND Filters reflect (with a metallic coating) light neutrally over a wavelength range (typically visual). They can be used to lower the intensity of light prior to the image plane. These are often used in photography, allowing photographers more flexibility with their setups to achieve desired effects. Often, an ND filter will be used in conjunction with a long exposure to prevent washed-out and overexposed images. They can also be used to add motion blur, reduce depth of field and to use a wider aperture. For more information read PDF… Shapes: :Circular Filters, Square Filters Dimensional Tolerances::+/- 0.1mm Flatness::< 5(1) @ 632.8nm Surface quality::< 40-20 Scratch/Dig

We offer Optoelectronics here at Merefields. Our comapny has been going for over 40 years so we will have the right products and services for you.  Please send me an enquiry via liamm@merefields.com or enquires@merefields.com

Merefields Supply a very wide range of Terminal Crimps, please send email to liamm@merefields.com for a Quote. We have over 10 Million Lines of Components in our Supply!

Knight Optical can offer you Custom Sapphire Cylindrical Lenses, for use within Endoscopes. We supply a range of Sapphire options for a variety of applications – all individually QA checked and metrology tested for quality to ensure parts meet customers’ specifications. What’re more, our Sapphire Cylindrical Lenses are supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications. Sapphire (Al2O3) is one of the hardest minerals and optical materials available for use in the range from UV up to 5µm, making it ideal as a protective window for camera systems. Cylindrical lenses are designed to focus light into a straight line, rather than to a single point. As the name suggests, the lens surface has a cylindrical shape rather than the usual spherical formation, which allows for one-dimensional shaping of light along a line. Cylindrical lenses are often used to change the profile of laser beams; for example Read PDF for more info Dimensional tolerance: :+/- 0.1mm Figure (sphericity)::1λ Focal Length Tolerance::± 0.2% (<10mm) Wavelength Range::0.17 – 5.5µm Surface quality::<40-20 Scratch/Dig Coating::A range of Anti-Reflective (AR) coating options

WE STOCK LOADS OF LITTLEFUSE PARTS. OUR RANGE IS FUSES, SENSORS, RELAYS AND SEMICONDUCTORS / DISCRETES. Please send me an enquiry via liamm@merefields.com or enquires@merefields.com