Moulded Aspheric Lenses

Knight Optical We can offer Custom Moulded Aspheric Lenses for use with Laser Diode Collimators. Aspheric lens surfaces are used to correct spherical aberration (where the converging light from a lens does not have a common focal point, resulting in a distorted image) in lasers and imaging. Traditional spherical lenses cannot collimate light effectively because even small angles of incidence can produce spherical aberrations. This can mean that several components may be required to get the desired result. The non-spherical surface of an aspheric lens allows a single component to effectively focus or collimate even highly divergent emissions, potentially replacing a multi-lens system with a single aspheric lens. Therefore Aspheric Lenses that are moulded are ideal for use within laser diode-to-fibre coupling applications. For more information read 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. Read PDF for more Information….

Known for their resistance to mechanical and thermal shock, our Magnesium Fluoride (MgF2) Windows are specified for a variety of applications operating in a range of harsh environments. Commonly employed for high-tech applications include excimer lasers, Fourier-transform infrared spectroscopy (FTIR), thermography and other infrared (IR) systems, MgF2’s durability and birefringent properties make for a sought-after optical window across a spectrum of industries. What’s more, its stability in water means it’s ideally suited for outer surfaces, such as windows. With its birefringence (beneficial for polarisers in the UV waveband), transmittance between 0.1µm and 7µm and at over 90% between 0.4-5.0µm and hardness of circa HK576, MgF2 is one of the hardest optical fluorides. For more information read PDF ……

Knight Optical can offer Amici Roof Prisms for use within Imaging Industry. We supply a range of Amici Roof 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 Industry. Amici Roof Prisms are often used in the development of telescope eyepieces and endoscopes, where they revert and invert the image while redirecting the beam by 90 degrees. For more information read PDF …