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This month, Knight Optical is excited to unveil a brand-new range of Fluorescence Filter Sets. As its first product launch of the year, the announcement comes as welcome news to those working on fluorescence imaging applications, who demand premium-quality, ultra-precision Filter Sets for high-efficiency transmission. The launch follows the business’ 30th anniversary, which the global optics supplier celebrated last year, and demonstrates its dedication in continually evolving the growth of its already-comprehensive portfolio of cutting-edge, custom-made, and stock optical components. Here, the trusted brand discusses its new product offering and runs through the indispensable technicalities behind the sets.Filters and Sets to Meet Every Application’s Needs As a set of optics that are typically used for fluorescence applications within fields such as biology, materials science, chemistry, medical diagnostics, and mineralogy; for example,

Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass to the correct thickness. Knight Optical offers stock absorptive ND filters in 12.5mm and 25mm diameters, and 50x50mm squares manufactured from high quality glass. Each filter is available with blocking between 0.1 and 4.0 OD and are available to purchase direct from this page. In addition to our stock absorptive glass ND filters, Knight Optical also offers an extensive custom optic service thanks to our many years of experience in the industry. We can supply ND filters cut to sizes and shapes to fit individual application and mount filters where applicable. READ PDF FOR FULL SPECIFICATION

Knight Optical has successfully launched a range of Stock Colour Glass Filters, for use within Entertainment and Design Industry. Within the LED Lighting Industry, Colour Glass Filters can used as downlights within a stage production by filtering the different visible wavelengths and filter out unwanted light from a white light source to provide desired coloured light that is perceived by an audience to be a highly saturated or intense colour. This is just what you need to help set the atmosphere for whatever event you’re planning We hold a massive inventory of Bandpass, Long pass, Short pass, and Mounted Colour Glass Filters. Stock sizes of 25mm diameter; and 50x50mm squares x 1mmthk with larger sizes of 300x300mm available on most of our filters as a custom option. Custom shapes and sizes at short notice, in most cases turned around within 1-2 week. Alternative thickness substrates available. For more information read the PDF …..

Knight Optical can offer you Stock and Custom Colour Glass Filters, for use within Inline Cameras in a range of materials of brands such as Schott, Kopp and CDGM. Depending on the achievable wavelength and desired affect you need for the Inline Camera we can find a suitable material for your application. Colour Glass Filters are good for selecting a particular wavelength to be absorbed so that the high out of band blocking in achieved. With regards to the use in Inline Cameras, Colour Glass Short pass Filters are more desirable as they cut out the IR wavelengths mean the imaging is not saturated with the IR giving the image better clarity. Colour Glass Filters are polished sheets of special glass that have been cast with a dye. Colour Glass Filters generally are relatively cheap and very stable. The disadvantage with them is that they are only available in a relatively small number of variants, and so can be restrictive in shortwave selection.  For More Info see PDF...

Knight Optical can offer you Stock and Custom Colour Glass Filters, for use within Inline Cameras in a range of materials of brands such as Schott, Kopp and CDGM. Depending on the achievable wavelength and desired affect you need for the Inline Camera we can find a suitable material for your application. Colour Glass Filters are good for selecting a particular wavelength to be absorbed so that the high out of band blocking in achieved. With regards to the use in Inline Cameras, Colour Glass Short pass Filters are more desirable as they cut out the IR wavelengths mean the imaging is not saturated with the IR giving the image better clarity. Colour Glass Filters are polished sheets of special glass that have been cast with a dye. Colour Glass Filters generally are relatively cheap and very stable. The disadvantage with them is that they are only available in a relatively small number of variants, and so can be restrictive in shortwave selection.  For More Info see PDF...

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 …..

Medical Sensors are used for the detection of enzymes, proteins, blood, bacteria & other substances inside the human body so that the correct treatment can be administered should abnormalities occur. These sensors use a number of different Interference Bandpass Filters of different wavelengths dependent on what needs to be detected. With our wide range of stock filters, Knight Optical provide wavelengths from the UV at 214nm for detection of bloods into IR wavelengths of 2000nm for the detection radiation or gases. These interference filters are also available for full customisation to your specific requirement. They are mounted in an aluminium ring making it easier for integration, we can also provide filter wheels to ensure quick changing within the instrument.

Knight Optical can offer dichroic bandblocking filters for use in Fluorescence Microscopy. We supply a range of dichroic bandblocking 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 fluorescence microscopy. Dichroic bandblocking filters are used to block a specific wavelength band and transmit the rest. Our Dichroic bandblocking filters are usually made for bands between 300-1200nm. Our dichroic filters are usually specced for a 0° AOI. Use at a 45° results in a CWL shift of around 35-50nm. They are used as beamsplitters in fluorescence microscopy to transmitting For more information read PDF….

Need to measure the fluorescent properties of a component with your Spectrometer but you feel like something’s missing? Maybe it’s Knight Optical range of Stock Dichroic Filters, ideal for use within Fluorescence Microscopy and Spectroscopy. For Fluorescence Microscopy and Spectroscopy, dichroic filters are used as beam splitters within the microscope system. They are used as an edge filter at a tilted angle of incidence (typically 45°) to direct the illumination of an excitation frequency towards the sample of interest, and then at an analyser to reject the same excitation frequency but passes a particular emission frequency. Dichroic filters offer superior contrast between transmitted and reflected wavelengths; having negligible absorption. Having a dielectric coating they are perfect for high power applications and they do not show the strong fluorescence of certain glass filters. For more information read the PDF

Automatic Number Place Recognition Cameras otherwise known as ANPRs; are camera devices designed to work at certain wavelengths (dependent on Country) to read a license plate’s number of a vehicle to then track it through a database to identify any criminal offences links to that car, such as uninsured; stolen; major and organised crime; and even terrorism. They are typically installed on motorways; busy roads around cities and towns; and also on police cars as well as specialised ANPR police vans. Knight Optical offers Colour Glass Filters for such an application, be it either long pass or bandpass filters. The wavelengths typically used by ANPR camera companies are: 695nm; 740nm; 810nm; 850nm; 910nm and 940nm. We offer these filters as either long pass or band pass filters. We can also offer these as customised filters with specific band blocking coatings to optimise your wavelength of choice. For more details see PDF

Knight Optical can offer IR-cut filters for use in Heat Shielding. We supply a range of Custom and Stock IR-cut 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 with Heat Shielding requirements. Our IR-cut filters allow good transmission levels of visible light but cut off IR and UV radiation. Our precision grade filters have an AR coating to increase their visible transmission. In many systems that require heat shielding while still needing visibility an IR-cut filter can be used. These can attenuate infrared radiation and allow through visible light, allows your temperature sensitive equipment For more information read the PDF……

Automatic Number Place Recognition Cameras otherwise known as ANPRs; are camera devices designed to work at certain wavelengths (dependent on Country) to read a license plate’s number of a vehicle to then track it through a database to identify any criminal offences links to that car, such as uninsured; stolen; major and organised crime; and even terrorism. They are typically installed on motorways; busy roads around cities and towns; and also on police cars as well as specialised ANPR police vans. Knight Optical offers Colour Glass Filters for such an application, be it either long pass or bandpass filters. The wavelengths typically used by ANPR camera companies are: 695nm; 740nm; 810nm; 850nm; 910nm and 940nm Read PDF for more information