Aspheric lenses 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. Traditional spherical lenses cannot collimate light effectively because even small angles of incidence can produce spherical aberrations.
Although they usually serve a similar purpose in correcting aberration, there are several benefits in using aspheric lenses instead of multi-lens designs such as doublets and triplets. Aspheric lenses are lighter and use less material, they are typically easier to fit, are far easier to mass produce and therefore can be significantly cheaper than multi-lens alternatives.
We offer a range of custom aspheric lens types, manufactured to your custom specification:
Custom precision grade aspheric lenses: Often used in commercial camera imaging systems, precision grade aspheric lenses provide excellent performance over the NIR and VIS spectrums. Our custom range of precision aspheric lenses can be provided uncoated and single-layer AR coated to improve transmission as high as 98% at the desired wavelength. Custom AR coatings can be offered to meet your wavelength application.
Custom plastic aspheric Lenses: Custom plastic aspheric lenses are relatively cheap as they are mass-produced, moulded or pressed, plastic. The surface quality of our custom plastic aspheric lenses is worse than most conventionally polished lenses. Some of these custom plastic aspherics have moulded flanges for ease of assembly. We can provide custom plastic aspheric lenses at competitive prices with very low tooling charges.
Custom fire-polished aspheric lenses: We provide a full range of both custom thermally toughened aspheric lenses and custom un-toughened fire polished aspheric lenses. We also have a huge tooling inventory available for custom aspheric lenses with “no tooling charges” however if you require a custom aspheric lens to your specification we can provide with minimum tooling costs.
Custom aspheric lens sets: We also provide custom aspheric lens sets at reduced costs compared to individually priced lenses. These are ideal for laboratory and design use.
Custom diamond turned aspheric lenses: A range of custom diamond turned aspheric lenses in a range of infra-red materials is also available custom made to your specific requirement.
Our custom capabilities are available below as well as links to our available stock aspheric lenses. Contact our multilingual technical sales team and discover how Knight Optical’s high quality, custom aspheric lenses and our impeccable quality of service can improve your instrumentation and supply chain experience.