Aspheric Condenser Lenses for Illumination
An aspheric condenser lens for illumination is a non-spherical (aspheric) glass lens used in LED and lighting systems to collect and direct light more efficiently than a spherical lens of the same aperture - scoped for illumination, not imaging or laser use.
Key facts
| Form | Plano-convex, aspheric front surface |
|---|---|
| Surfaces | Aspheric collecting face (clear); flat back - clear or textured |
| Scope | Illumination (LED / lighting) - not imaging or laser grade |
| Supply mode | Existing tooling for select sizes; build-to-print for custom aspheric profiles |
FAQ
How does an illumination asphere differ from an imaging asphere?
An illumination asphere is specified for light collection and beam shaping, with looser wavefront/figure tolerances than an imaging asphere, which is specified for resolving an image with tight wavefront error control.
How does it differ from a laser-grade asphere?
A laser-grade asphere adds requirements such as laser damage threshold and very tight surface/coating specs that are not relevant to an LED illumination condenser.
Is Dongqiao's scope imaging or laser grade?
No - our aspheric condenser lenses are scoped for illumination (LED and lighting) use, not imaging or laser applications.
Can the flat side be textured?
Yes, on applicable geometries the flat back side can be clear or textured, the same as our other plano-convex illumination lenses.
Do you publish the aspheric profile/coefficients?
Not as a general catalog spec today. For a custom project, aspheric profile data can be supplied by you or discussed directly during quoting.
What sizes are available?
Aspheric geometries are available both on existing tooling and as custom builds; check the catalog for flanged aspheric-adjacent sizes or send your requirement through the custom RFQ.
Tell us what you are sourcing.
A product name, a specification or an application is a starting point.