Stepped Aspheric Lens
Axial steps: stacked along the optical axis, resembling a multilayer asphere, for segmented optical-power optimization. Radial steps: concentric rings on an aspheric surface, similar to a Fresnel lens with an aspheric base, compress lens thickness through annular zones. Hybrid steps: phase steps from diffractive optical elements (DOE) provide chromatic correction or multiwavelength compatibility. Material, wavelength and coatings can be custom designed.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Substrate | Optical Glass, H-K9, Fused Silica, BK7, etc. |
| Size Range | φ15-φ400mm |
| Surface Quality | 20-10 |
| Centration Error | ≤5 arcsec |
| Center Thickness Tolerance | ±0.05 |
| Effective Aperture | >90 % |
| Surface Accuracy PV | 0.15 ㎛ |
| Processing Method | CNC |
Applications
Datasheet
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Supplier Information
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