Negative Meniscus Convex-Concave Lens
Description
Negative meniscus (convex-concave) lenses, with center thickness smaller, are designed to minimize spherical aberration in optical systems. When used in combination with another lens, a negative meniscus lens will increase the focal length and decrease the numerical aperture (NA) of the system. When used to diverge light, as shown in the diagram above, the convex surface should face the beam to minimize spherical aberration.
Negative 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 negative meniscus lens is designed to minimize spherical aberration in optical systems and can increase the focal length and decrease the numerical aperture of the system when used in combination with another lens.
The diameter range for the negative meniscus lens is 3.0mm to 200.0mm.
The tolerance for the focal lengths of the negative meniscus lens is ±1%.
Yes, the negative meniscus lens can be coated with MgF2 to protect the surface or AR coated to increase the transmission.
The focal length of the negative meniscus lens can be calculated using the equation f= (R1*R2)/((n-1)*(R2-R1)), where n is the index of refraction and R1,R2 is the radius of curvature for each surface of the lens.