This page is about precision aspheric optics — the aspheric lenses used in imaging objectives, laser collimation and engineered illumination — not spectacle lenses. The distinction matters for specification: the fields an industrial asphere enquiry asks for first are its surface profile, its diameter and focal length, and the aberration it is there to remove. Where a spherical singlet bends marginal rays too strongly and blurs the focus, the aspheric profile varies its curvature from centre to edge and brings those rays back to the same focal point, which is why one asphere can replace two or three spherical elements in a compact assembly.
The manufacturer's documented aspheric listing is a plano-convex high-precision aspheric lens for LED applications, offered across diameters from 55 to 98 mm. Smaller imaging and collimation aspheres are not a documented listing in this catalogue: if a design needs one, submit the requirement — drawing, diameter, focal length and working band — for evaluation, and availability is confirmed before any quotation is issued. The enquiry route is the drawing, not the shelf.
Where Aspheric Lenses Are Specified
- LED illumination — the documented 55–98 mm plano-convex aspheric line, recorded as an LED lens line.
- Laser collimation and focusing — a single asphere collimates a diverging diode output with less spherical aberration than a singlet spherical lens.
- Compact imaging — replacing a spherical doublet or triplet with one asphere cuts element count, weight and assembly tolerance stack.
- Collection optics — fast, high-numerical-aperture collection from a point source benefits from the aspheric correction at large apertures.
Specifying an Asphere
An asphere enquiry should carry the diameter, focal length or the full surface prescription if you have one, the material, and the wavelength band the lens works in. If you are converting an existing spherical design, say what the current element does and what aberration you are trying to remove — that context is what the quotation is written against when it confirms a catalogue-profile asphere or a custom profile. Buyers still at the concept stage can read what aspheric lenses are and what 'aspheric' means before writing the specification.
Aspheric lenses sit inside the wider lens programme alongside plano-convex and biconvex spherical lenses and the cylindrical lenses used for line generation. Minimums and pricing are confirmed per specification in the written quotation; the documented LED aspheric listing carries a 10-piece minimum.
Frequently Asked Questions
What diameters are documented for aspheric lenses?
The documented high-precision plano-convex aspheric LED lens line covers diameters from 55 to 98 mm, with a 10-piece listed minimum.
Do you sell aspheric spectacle lenses?
No. This catalogue is precision optics for instruments, lasers and illumination systems, not ophthalmic lenses.
Can an asphere replace my spherical doublet?
Sometimes — where the wavelength, conjugates and aberration requirements allow, one asphere can reduce the element count, but replacing a specific spherical doublet or triplet is a design conclusion that has to be verified by optical design, not assumed. Send the existing design's diameter, focal length and working band, and ask in the enquiry whether a single asphere covers it.
Reading an Aspheric Specification
Two asphere specifications that look identical on a headline can behave differently in the instrument, and the difference sits in how the profile is described. For a catalogue-profile asphere, the fields the enquiry asks for first are its diameter and focal length, and the surface profile the figure is to follow. A prescription-defined asphere carries its full surface equation, and the quotation then turns on manufacturing to that equation rather than selecting from a profile. Buyers converting a spherical design should also state the back focal position their layout assumes, because an asphere that corrects perfectly at the wrong conjugate has solved the wrong problem. Finally, keep the protective context in view: a large aspheric element is a precision surface, so handling, packing and mounting belong in the specification conversation from the start. Buyers who cannot tolerate downtime can raise a spare when the first batch is ordered.
Request a Quotation
Tell us the component, material, dimensions and coating you need. Pricing and lead time for your specification are confirmed in the written quotation.