Aspherical Lenses
Single-element aspheres that replace multi-element designs — molded and polished, coated and measured on the bench that makes them.
Why One Asphere Beats Three Spheres
An aspheric surface bends the marginal rays to the same focus as the paraxial ones, collapsing a two- or three-element correction into one element — shorter, lighter, cheaper to assemble. The payoff shows up in phone and projection optics, laser diode collimation (the 980/1550 nm pump-collimation business), compact imaging objectives and searchlight illumination.
Two production lanes: molded aspheres (glass for thermal duty, plastic for cost) when volumes justify the tool, and polished aspheres on precision machinery for prototypes, small programs and large apertures tooling can't reach. Which lane your design lands in is a volume-and-aperture decision we make with you at quote, not after.
Metrology and Coating
Asphere figure is verified on profilometers and interferometers with null optics — the same metrology culture as our flat and spherical lines, extended to freeform sag. AR, beamsplitter partials and protective stacks run in-house; the element arrives optically complete, not a semi-finished blank you have to send somewhere else and re-queue.
Send the design (sag file or prescription) or the function: "collimate a 650 nm diode into 8 mm at 100 mm working distance" is a quoteable sentence on this line.
Frequently Asked Questions
Mold or polish my design?
Volumes in the tens of thousands justify mold tooling; below that, polished aspheres carry the program with lower NRE. Many buyers start polished and move to mold at the tool-break volume we estimate in the quote.
What sag data do you need?
A sag file, a full prescription with semi-diameters, or a solidmodel with aspheric coefficients — any one of the three. A one-paragraph system description also starts a design conversation.
Tolerance class for molded parts?
Molded aspheres carry prism, decenter and sag tolerances that shift effective focal length; we quote the tolerance class your assembly actually closes, stated against your budget.
Coating included?
Yes — AR and functional coatings run in-house; spectra measured per campaign and shipped with the lot.
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Send a drawing — or a paragraph.
Coating design proposals, tolerance advice and tiered pricing, from the engineers who run the coater.