After-sales Service: | Online Service |
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Warranty: | Online Service |
Usage: | Lighting, Medical, Optical, Photography |
Samples: |
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Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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Payment Method: | |
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Initial Payment Full Payment |
Currency: | US$ |
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Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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What is aspherical lens?
Aspheric lens or asphere is a lens whose surface profiles are not portions of a sphere or cylinder. In photography, a lens assembly that includes an aspheric element is often called an aspherical lens.Range of diameter | Dia.0.7mm-Dia.400mm |
Range of curve radius | R1.5-R∞ etc. |
Tolerance of diameter | +/-0.1, +/-0.01, +/-0.005 etc. |
Surface accuracy | λ , 1/2λ , 1/4λ , 1/10λ etc. |
Tolerance of Thickness | +/-0.1, +/-0.05, +/-0.01 etc. |
Centration | +/-2′,+/-1′ etc. |
Aperture N | 5, 1 etc. |
Irregularity ΔN | 2, 1, 0.5, 0.2 etc. |
Surface quality | 60/40, 40/20, 20/10, 10/5 etc. |
Material | BK7 or other optical material |
Size | 10mm-200mm |
Fringes | lambda/2 |
Center Thickness | 15nm-25nm |
Dispersion round | 0.03mm-0.2mm |
Centration | 3 arc min |
Surface Quality | 60-40 Scratch/Dig |
Clear Aperture | 90% |
Coating | Available upon Request |
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