Aspherical Lens

Precision Polishing Aspherical Lens

Precision-polished aspherical lens is optical component that use ultra-precision machining techniques such as CNC polishing to directly remove material from a glass blank to form an aspherical curvature. The core value lies in achieving extremely high surface accuracy (better than λ/40 RMS), making it particularly suitable for applications with stringent image quality requirements.

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Key Features

Extremely high surface accuracy

Up to λ/40 RMS (~15 nm) or even higher.
Extremely low surface roughness and damage

Processes such as MRF and IBP can achieve ultra-smooth surfaces, avoiding scattering losses and eliminating subsurface damage that may affect the laser damage threshold.
Capable of machining large sizes and special materials

For lenses with diameters ranging from tens of millimeters to several meters, or for hard and brittle materials that cannot be machined using molding (such as SiC), precision polishing is the only option.
Flexible customization

Because it does not require expensive molds, precision polishing is ideal for small-batch, diverse prototyping and special customization needs.