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Supplier profile:

Knight Optical

Bringing quality into focus

Knight Optical (USA) LLC
1130 Ten Rod Road
Suite D102
North Kingstown
Rhode Island 02852
United States

Tel.:+1 401 583 7846
Tel.:+44 1622 859444 (United Kingdom)
Fax:+1 401 583 7851
Fax+44 1622 859555 (United Kingdom)
E-mail:
Website:web link www.knightoptical.com
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Company Description

Knight Optical LLC is a trusted leading global figure in the production and distribution of scientific, stock and custom precision optical components and sub-assemblies. With over 25 years’ experience providing optical solutions for a huge range of instrumentation in most industrial and research sectors, building strong reliable relationships.

Our team supply bespoke precision optical components in UV-VIS-NIR materials, no product is released until it has been examined in our advanced metrology laboratory to guarantee parts exceed customer specification. Our highly skilled technical advisers are trained in optical design using Zemax software.

We surpass ISO certifications, striving towards total customer satisfaction of service, quality and security. In addition to custom design and manufacture, we also hold in stock a range of over 3000 precision optical components to satisfy a range of applications and sectors available from our website.

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Products

ProductEncDescription
achromatic opticsS Eachromatic optics from Knight Optical

Knight Optical's offers achromatic lenses used to minimise chromatic and spherical aberrations. These achromatic doublet lenses are available in focal lengths up to 500mm and are ideal in imaging applications, laser collimation, and as objective lenses in telescopes and other instruments. Custom achromatic lenses are available upon enquiry including triplet lenses and additional coatings. We also offer achromatic waveplates suitable for 450–680 nm, 700–1000 nm, 950–1300 nm, and 1200–1650 nm wavelength ranges, with applied AR coatings for consistent phase retardation over the entire wavelength.

anti-reflection coatingsS E

For maximum transmission, Knight Optical offers a range of AR coatings to reduce surface reflections. Available as single layer MgF2 coatings, or multi-layer coatings, we can offer AR coatings centred to a specific wavelength or over a broadband wavelength range. With AR coatings from UV to IR, Knight Optical can help with your custom order.

aspheric opticsS Easpheric optics from Knight Optical

As an alternative to a multi-lens system, Knight Optical offers a wide range of high-quality aspheric optics including fire-polished and plastic aspheric lenses. Custom VIS and IR aspheric lenses are available including diamond turned infrared aspheric lenses, moulded glass aspheric lenses, including with diffraction-limited performance.

ball lensesS Eball lenses from Knight Optical

Knight Optical provides a wide range of ball and half ball lenses which are ideal for endoscopy and fibre communications. We have a variety of material options available including quartz, sapphire, cubic zirconia, ruby, BK7 and other optical glass, fused silica, borosilicate, and many more. Our stock catalogue consists of 0.4 mm to 10 mm diameter ball lenses, but custom dimensions are available up to 100 mm.

beam expandersS E

Available in singlet, doublet (positive and negative focal lengths) and triplet varieties, Knight Optical can supply customised beam expanders for a range of laser-based, cutting-edge projects. Whether your application works in the ultraviolet (UV), visible, near-infrared (NIR), mid-infrared (MIR) or far-infrared (FIR) spectrum, opting for our custom-made components allows you to specify suitable substrates for your required wavelength.

beam homogenizersS Ebeam homogenizers from Knight Optical

Knight Optical offers hexagonal homogenising light pipes which provide uniform illumination from non-uniform polychromatic light sources through the process of total internal reflection. Manufactured from fused silica, these light pipes achieve an approximate 35-40% increase in the output of light. Custom beam homogenisers are available including tapered light pipes.

beam splittersS Ebeam splitters from Knight Optical

Knight Optical provides plate beamsplitters in economy, standard and precision ranges. With 30/70, 50/50 and 60/40 ratio available in the visible, NIR and Telecom wavelength regions. Custom beamsplitters are also available including polarising cube beamsplitters.

cold mirrorsS Ecold mirrors from Knight Optical

Knight Optical offers stock cold mirrors which reflect visible wavelengths whilst transmitting NIR light. These mirrors can be cut to custom dimensions to meet our customers’ requirements.

condensersS Econdensers from Knight Optical

Knight Optical offers large planoconvex condenser lenses as catalogue items, with focal lengths ranging from 85 mm to 500 mm and with coated and uncoated options. We also offer fire polished aspheric condenser lenses. Custom condenser lenses are also an option, including moulded and aspheric.

corner cube prismsS Ecorner cube prisms from Knight Optical

Knight Optical offer precision N-BK7 corner cube prisms with a 3 arcsecond deviation angle. Often used for beam steering, these retroreflector prisms are also available as custom orders including mounted options.

custom opticsS E

Knight Optical's main area of expertise is its custom capabilities. We work closely with our customers on their bespoke specifications to ensure they receive both a high-quality product and service – something Knight Optical prides itself on. Customisation includes substrates, dimensions, tolerances, and coatings of the optical components.

cylindrical lensesS Ecylindrical lenses from Knight Optical

Knight Optical ‘s stock catalogue includes BK7 and UV fused silica cylindrical lenses designed to focus light across one plane rather than to a point. We currently offer 12.5mm to 150mm focal lengths, with AR coated options available in the visible region. Custom cylindrical lenses can also be provided to meet bespoke requirements.

diaphragmsS Ediaphragms from Knight Optical

Knight Optical have an extensive range of iris diaphragms with steel leaves and housed in blackened brass body. Our catalogue diaphragms are available with a minimum aperture of 0.6 mm up to a maximum 225 mm aperture. Custom diaphragms are also available upon request.

dichroic mirrorsS Edichroic mirrors from Knight Optical

Providing unparalleled transmission, reflection and absorption, our dichroic filters (offered as custom-made optics or from our wide range of stock) feature clear transitions between transmitted and reflected wavelengths.

Available in longpass, shortpass (which can both serve as hot and cold mirrors), bandpass, bandblocking and colour correction filters, as well as filter sets, our collection of dichroic filters offers minimal absorbance characteristics.

dielectric coatingsS E

We offer a range of dielectric coatings for optimum reflectivity. Available for a variety of components including beamsplitters, front-surface mirrors and rod and cone mirrors, to name but a few, our dielectric options include visible, near-infrared (NIR), infrared (IR) (2000 nm +) and large parts (1000 mm).

dielectric mirrorsS Edielectric mirrors from Knight Optical

Knight Optical can provide catalogue dielectric front surface mirrors with coatings optimised for the visible or NIR regions, offering over 98% reflection in these wavelengths. Also available are laser mirrors with a dielectric coating applied using ion beam sputtering (IBS) technology, with above 99.9% reflection at their dedicated wavelength. Custom dielectric mirrors are available upon enquiry.

diffraction gratingsS Ediffraction gratings from Knight Optical

Knight Optical has a range of stock diffraction gratings available, choose from our commercial, holographic and ruled research diffraction gratings for your application. If these do not meet your requirements, Knight Optical also offers custom diffraction gratings, enquire for further information.

diffusersS Ediffusers from Knight Optical

Knight Optical have a range of different optical diffusers, including our very popular anti-Newton glass used to scan negatives and can be cut-to-size. Our stock catalogue includes flashed opal, ground glass, Optolite, and plastic screen diffusers. We also offer custom diffusers if our stock optics do not meet your requirements.

first surface mirrorsS Efirst surface mirrors from Knight Optical

Knight Optical has a range of first surface mirrors available. Coatings include UV enhanced aluminium (180–650 nm), enhanced aluminium (450–650 nm), dielectric (450–700 nm), NIR dielectric (700–1604nm), ion-plated silver (450–2000 nm), and protected gold (750 nm to far IR). We also offer a variety of different flatness options dependent on the application, from 2λ down to λ/10. Custom mirrors are also available if our stock optics are not a match for your requirements.

Fresnel lensesS EFresnel lenses from Knight Optical

Knight Optical's Fresnel lenses are one of our most popular products. Our stock catalogue consists of standard Fresnel lenses with focal lengths from 3 mm to 650 nm, reverse configuration Fresnel lenses which are ideal for solar concentration applications, cylindrical Fresnel, and lenticular Fresnel lenses. Custom Fresnel lenses are also available with dimensions to 1000 mm or more.

gas cellsS Egas cells from Knight Optical

Knight Optical can provide custom gas cells to our customers, either as separate components – the cylinder and the transmission window – or as a complete gas cell. We are also able to supply filled gas cells with more common gases such as CH4, NH3, C2H2, and more.

hot mirrorsS Ehot mirrors from Knight Optical

Knight Optical can provide hot mirrors from stock in 25 mm to 50 mm diameters or 25 mm × 25 mm to 100 mm × 100 mm squares, however these can be cut to custom dimensions with a quick turnaround. Hot mirrors reflect IR whilst transmitting visible light. These mirrors are an alternative to our KG1 heat filters which absorbs the infrared light rather than reflecting it.

infrared opticsS Einfrared optics from Knight Optical

Knight Optical can offer a variety of stock and custom infrared optics, such as lenses, windows, prisms and filters. We can provide these in a wide range of different materials including germanium, silicon, zinc selenide, calcium fluoride, sapphire, magnesium fluoride, zinc sulphide. Our custom infrared optics include aspheric lenses, filters working in the IR wavelengths, and coatings optimised for the different thermal wavebands, as well as diamond-like carbon (DLC) coatings for extra durability of a surface.

interference filtersS Einterference filters from Knight Optical

Knight Optical have a vast range of mounted interference bandpass filters available from our stock catalogue. We have narrow, standard and broadband options with wavelengths centred in the UV, visible and NIR regions. We offer specific ANPR filters with NIR centre wavelengths which correspond to commonly used LED wavelengths (740 nm, 850 nm, 870 nm and 940 nm). We also offer fluorescence filter sets which include excitation and emission interference bandpass filters which work with common fluorophores. As well as our large stock range, we also offer custom interference filters to suit your application.

large diameter opticsS E

Knight Optical can provide a variety of custom optical components with large diameters including optical flats, infrared windows and lenses, mirrors, optical domes, and many more.

laser mirrorsS Elaser mirrors from Knight Optical

Knight Optical supplies laser mirrors ideal for the most demanding applications. Coated using ion beam sputtering (IBS) our ultrafast laser mirrors exhibit a low GDD and high LIDT due to the compact and durable nature of the coating. Broadband and wide-angle options are also available off-the-shelf. Our mirrors are ideal for Yb:YAG, Yb:KGW, Yb: KYW, Ti:sapphire lasers, and many more. We also excel at working with our customers to provide custom optical components meeting their design specifications.

laser opticsS Elaser optics from Knight Optical

Knight Optical has a range of available laser optical components from laser mirrors exhibiting minimal GDD and high LIDT, to lenses manufactured from zinc selenide ideal for CO2 lasers. Our thin film polarisers exhibit > 99.9% reflection in s-polarisation with a separated > 98% p-polarised transmission beam. We also excel at working with our customers to provide custom optical components meeting their design specifications, including output couplers, resonator mirrors, and wavelength separators.

lensesS Elenses from Knight Optical

Knight Optical has an extensive lens portfolio which are suitable for a variety of applications. Our stock lenses included aspheric, achromatic doublet, ball & half ball, biconvex, cylindrical, condenser, Fresnel, planoconcave/convex, plastic and rod lenses. Knight Optical also offers custom lenses if our stock optics do not meet our customer’s requirements.

metal-coated mirrorsS E

Knight Optical has a range of stock and custom metal-coated mirrors, including aluminium, silver or gold coated front surface mirrors available from stock.

micro-opticsS E

Knight Optical's custom only micro-optics are specifically tailored to each project's requirements. Many of our optics can be manufactured to minute dimensions such as lenses (including ball lenses), windows, filters, and prisms. Enquire for further information.

mirrorsS Emirrors from Knight Optical

Knight Optical offer stock mirrors including concave, elliptical, concave lamp reflectors and plane mirrors. Our mirror coatings include UV enhanced aluminium (180–650 nm), enhanced aluminium (450–650 nm), visible dielectric (450–700 nm), NIR dielectric (700–1064 nm), ion-plated silver (450–2000 nm), and protected gold (750 nm-far IR).

If your requirements are not met by our stock components, we can provide custom mirrors manufactured to your specifications.

neutral density filtersS Eneutral density filters from Knight Optical

Knight Optical has a range of neutral density (ND) filters available from our stock catalogue, including glass, gelatin, and metallic ND filters. Our absorptive glass ND filters are manufactured from Schott (or equivalent) filter glass and work by attenuating the light through absorption, unlike our metallic ND filters which reflect unwanted light. Custom ND filters are also available.

optical aperturesS Eoptical apertures from Knight Optical

Offering excellent control over beam shape and size, Knight Optical's apertures are available in two grades: standard and precision. Choose from a comprehensive stock range or customise your apertures to meet the exact needs of your project. Our series of apertures comprises pinholes, slits and iris diaphragms in sprung steel leaves or stainless steel leaves.

optical domesS Eoptical domes from Knight Optical

Knight Optical offers a range of optical domes manufactured from BK7 or UV fused silica. We can also provide custom domes in a variety of different substrates including optical glass, sapphire, acrylic, filter glass, infrared materials, and more. Domes are Ideal optics for protecting systems from the environment due to their durability and shape. Coatings can also be applied.

optical filtersS Eoptical filters from Knight Optical

Knight Optical's offers a large variety of stock and custom optical filters. Our bandpass, shortpass, and longpass filters are available as different filter types each with their own advantage including colour glass filters, dichroic filters, and interference bandpass filters. We also offer heat control filters. IR cut filters, neutral density (ND) filters, and Wratten filters. Knight Optical also have a fluorescence filter sets compatible with certain fluorophores, these consist of an excitation and emission filter, as well as a dichroic mirror.

optical flatsS Eoptical flats from Knight Optical

Used as a reference surface, Knight Optical's optical flats are provided in single-or double-sided Zerodur and quartz varieties with λ/10 or λ/20 flatness available. Our stock catalogue includes 26 mm to 302 mm diameter optical flats which are packaged in a protective wooden box. Custom optical flats are also available with differing dimensions and flatness specifications. We also stock monochromatic light units which are used to view the fringe patterns on the surface of the optical flat when testing a surface.

optical materialsS E

Whether your application works in the visible, ultraviolet (UV), near-infrared (NIR) or infrared (IR) spectrum, we have a wide variety of wavelength-specific substrates for customisation or from our extensive stock range. From BK7 (or equivalent), UV-grade fused silica and quartz to germanium, sapphire and zinc selenide – plus many more substrate alternatives – our components are capable of meeting any requirement.

optical windowsS Eoptical windows from Knight Optical

Knight Optical offers a range of stock optical windows including standard windows manufactured from BK7, B270, borosilicate, UVFS, Gorilla Glass, and plastic. We also have UV and IR materials available including barium fluoride, calcium fluoride, magnesium fluoride, germanium, zinc selenide, sapphire, silicon, and potassium bromide. Our optical domes are also a popular component, with stock and custom options available. Knight Optical can provide fully custom windows including the addition of coatings to suit your application and with a variety of substrates available.

pinholesS Epinholes from Knight Optical

Available in two categories, high-powered and standard grade, our high-quality pinholes provide optimum control over beam size. Our stock laser-drilled apertures are ready for next-day dispatch, in options ranging from 0.5 μm to 1000 μm and in mounted and unmounted varieties. Alternatively, if you are searching for a more tailored approach to your specification, Knight Optical also provides custom-made pinholes in a variety of materials, mounting options and sizes.

plastic opticsS Eplastic optics from Knight Optical

Knight Optical offers a variety of plastic optics within our stock catalogue including spherical lenses, aspheric lenses, Fresnel lenses, windows, diffusers, filters, and waveplates. We can also provide custom plastic optics, such as optical domes, and due to the moulding process, we can also produce more complex shapes. Enquire for further information.

polarizersS Epolarizers from Knight Optical

At Knight Optical, we stock a vast range of polarisers suitable for a variety of applications, including linear and circular sheet polarisers, achromatic waveplates, zero and low order quartz retarders, and calomel infrared polarisers. We also offer custom polarisation optics including crystal polarisers, as well as Lyot depolarisers.

prismsS Eprisms from Knight Optical

Knight Optical offers an extensive range of stock prisms which are suitable for a wide array of projects and applications. Our range of prisms includes Amici, corner cube, Dove, equilateral, Fresnel, homogenising light pipe, Pellin–Broca, penta, Porro, rhomboid, right angle, as well as prisms manufactured from UV and infrared substrates. Custom prisms are also available in different substrates and with applied coatings.

retroreflectorsS Eretroreflectors from Knight Optical

Knight Optical have stock N-BK7 corner cube retroreflector prisms in 12.5 mm to 64 mm diameters with a 3" deviation angle. These corner cube prisms offer excellent parallelism between the entry and exit beam. We can also offer custom corner cube retroreflectors with different substrates and coatings available.

rod lensesS Erod lenses from Knight Optical

Knight Optical offers standard rod lenses manufactured from borosilicate. We can also provide custom rod lenses, for example manufactured from UV fused or with an applied coating.

ultraviolet opticsS Eultraviolet optics from Knight Optical

Knight Optical has been providing optical components suitable for UV applications for many years. By utilising substrates that transmit into the UV waveband or applying a coating that enhances the optics performance in the lower wavelengths optics can be designed to work in these lower wavelengths. Substrates include UV fused silica, calcium fluoride, magnesium fluoride, lithium fluoride, calcite, and sapphire. Optics include windows, lenses, mirrors, and filters. Knight Optical has stock and custom options available for our customers.

waveplatesS Ewaveplates from Knight Optical

Knight Optical offers a range of stock and custom waveplates. Our stock catalogue consists of zero and low order quartz waveplates, achromatic waveplates, mica retarders, and plastic retarders. With our custom capabilities we are able to offer a wider variety including multiple order waveplates.

wedge prismsS Ewedge prisms from Knight Optical

Offering ultimate control over beam steering, our wedge prisms are available in UV (which can be manufactured from calcium fluoride or UV-grade fused silica to work efficiently at 175 nm and transmit 85% at 185 nm), visible and near-infrared (NIR) substrates. Available as custom-made components, Knight Optical's wedge prisms can meet the needs of every project.

Information of Knight Optical Appears on the Following Pages

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Pages with Suppliers for Products

achromatic optics, anti-reflection coatings, aspheric optics, ball lenses, beam expanders, beam homogenizers, beam splitters, cold mirrors, condensers, corner cube prisms, custom optics, cylindrical lenses, diaphragms, dichroic mirrors, dielectric coatings, dielectric mirrors, diffraction gratings, diffusers, first surface mirrors, Fresnel lenses, gas cells, hot mirrors, infrared optics, interference filters, large diameter optics, laser mirrors, laser optics, lenses, metal-coated mirrors, micro-optics, mirrors, neutral density filters, optical apertures, optical domes, optical filters, optical flats, optical materials, optical windows, pinholes, plastic optics, polarizers, prisms, retroreflectors, rod lenses, ultraviolet optics, waveplates, wedge prisms

Encyclopedia Articles

achromatic optics, anti-reflection coatings, aspheric optics, ball lenses, beam expanders, beam homogenizers, beam splitters, cold mirrors, condensers, corner cube prisms, custom optics, cylindrical lenses, diaphragms, dichroic mirrors, dielectric coatings, dielectric mirrors, diffraction gratings, diffusers, first surface mirrors, Fresnel lenses, gas cells, hot mirrors, infrared optics, interference filters, large diameter optics, laser mirrors, laser optics, lenses, metal-coated mirrors, micro-optics, mirrors, neutral density filters, optical apertures, optical domes, optical filters, optical flats, optical materials, optical windows, pinholes, plastic optics, polarizers, prisms, retroreflectors, rod lenses, ultraviolet optics, waveplates, wedge prisms

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