Positive Meniscus Convex-Concave Lens
Description
Positive meniscus (convex-concave) lenses, with center thickness bigger, are designed to minimize spherical aberration. When used in combination with another lens, a positive meniscus lens will shorten the focal length and increase the numerical aperture (NA) of the system without introducing significant spherical aberration. When used to focus a collimated beam, as shown in the diagram above, the convex side of the lens should face the source to minimze spherical aberration.
Positive Meniscus Convex-Concave Lens
Specifications |
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|---|---|
| Material: | Ge, ZnSe, CaF2, UVFS, FS, BK7, H-K9L |
| Diameter: | 3 mm |
| ROC1: | -- mm |
| ROC2: | -- mm |
| Available Focal Lengths: | 100mm to 1000mm |
| Available Diameters: | 3mm to 200mm |
| Surface Roughness (Scratch & Dig): | 80/50 to 20/10 |
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How to order?
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Ships from:
China
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Sold by:
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On FindLight:
since 2015
Frequently Asked Questions
A positive meniscus (convex-concave) lens is a lens with a convex surface on one side and a concave surface on the other, designed to minimize spherical aberration.
When used in combination with another lens, a positive meniscus lens will shorten the focal length and increase the numerical aperture (NA) of the system without introducing significant spherical aberration.
When used to focus a collimated beam, the convex side of the lens should face the source to minimize spherical aberration.
The focal lengths available range from 100.0 to 1000.0 mm.
Yes, they can be coated with MgF2 to protect the surface or AR coated to increase the transmission.