Knight Optical (UK) Ltd Datasheets for Optical Lenses
Optical lenses are transparent components made from optical-quality materials and curved to converge or diverge transmitted rays from an object. These rays then form a real or virtual image of the object. This area includes micro lenses.
Optical Lenses: Learn more
| Product Name | Notes |
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Reverse Configuration Fresnel Lens Non-Solar (Circular) 10mm F.L. 50mmdia aperture 2mmthk -- LFS1050
Reverse Configuration Fresnel Lens Non-Solar (Circular) 15mm F.L. 75mmdia aperture 2mmthk -- LFS1575
Reverse Configuration Fresnel Lens Solar (Circular) 200mm F.L. 354mmdia aperture 2mmthk -- LFS200354
Reverse Configuration Fresnel Lens Solar (Circular) 300mm F.L. 425mmdia aperture 2mmthk -- LFS300425
Reverse Configuration Fresnel Lens Solar (Circular) 400mm F.L. 673mmdia aperture 2mmthk -- LFS400780
Reverse Configuration Fresnel Lens Solar (Circular) 600mm F.L. 566mmdia aperture 2mmthk -- LFS600566
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Please note; Due to the size of some of these lenses, we may need charge an additional fee for shipping. If you would like further details, please send your request... |
| A single lens used to form an image will always show some chromatic aberration, that is variation of focal length with wavelength. Achromatic doublet lenses correct for this as they... | |
| As the name suggests cylindrical lenses have surfaces which are sections of a cylinder rather than the normal sphere normally used. Cylindrical lenses (cylinder lenses) are often used to change... | |
| Ball lenses are, as the name suggests, completely spherical lenses most commonly used to couple light in and out of fibres. Knight Optical supplies a range of stock ball lenses... | |
| Biconvex lenses are a good quality simple form of lens; typically both faces are convex and spherical. UV grade fused silica biconvex lenses are widely used for moderate quality imaging... | |
| Biconvex lenses are one of the most simple lenses, but good quality, glass lenses with both faces convex and spherical. Biconvex lenses are widely used for moderate quality imaging and... | |
| Calcium Fluoride (CaF₂) is commonly used for optics looking at the IR and UV spectrums and has a very low change in refractive index with wavelength. It shares similar optical... | |
| Concave lenses, are a simple lens with one spherical face and one flat plano face. Because the spherical face is concave the lens has a negative focal length, allowing the... | |
| Condenser lenses are used for concentrating light into a beam. Condenser lenses are typically used in enlargers, projectors and illumination lighting systems. This range of large condenser lenses have been... | |
| Fresnel lenses consist of a flat surface with interspaced, concentric steps whereby each step corresponds to the surface of a conventional lens. Each step thereby acts as a refractive surface,... | |
| Fused silica cylindrical lenses are widely used in the ultraviolet applications and these cylindrical lenses find many applications for beam handling in this spectral region. Like all cylindrical lenses they... | |
| Lenticular lenses are comprised of regular lines of cylindrical lenses on a flat surface that efficiently divide, focus and diffuse light rays. This type of lens sheet is used for... | |
| Most of the single lens forms, planoconvex, planoconcave, meniscus and aspheric, are available in plastic. Plastic lenses are generally cheaper and lighter than glass equivalents but of lower quality. Plastic... | |
| Planoconvex lenses have one plane and one convex surface and have a positive focal length. Planoconvex lenses are typically used for focusing or collecting light in optical systems. Plano-convex lenses... | |
| Plastic Aspheric Lenses are relatively cheap as they are mass produced, moulded or pressed, plastic. The surface quality of plastic aspheric lenses is worse than most conventionally polished lenses. However... | |
| Rod Lenses are a special variant of cylindrical lenses. They are complete rods where the light passes through the sides of the rod and focuses a line. Rod lenses have... | |
| Sapphire crystal (Al2O3) is an excellent substrate for a range of rugged applications. It has high transmission from 150nm up to around 5µm therefore ideal for UV, Visible and IR... | |
| These fire-polished aspheric lenses are glass lenses manufactured by a simple moulding process and polished by heating just enough to melt the surface and allow surface tension to smooth out... | |
| These simple fused silica planoconvex lenses have a convex spherical face and a plano face resulting in a positive focal length. Synthetic fused silica fused is an excellent choice of... | |
| Traditionally lens surfaces have been sections of a sphere. For many applications this leaves spherical aberration as the dominant defect of any image so created. Aspheric lenses are used to... | |
| Zinc Selenide is used in the form of optical windows in FLIR (Forward Looking Infrared) systems, as meniscus, spherical or cylindrical lenses and as resonator windows in CO2 lasers. |