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Meniscus (Material: FS)

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 ...

Specifications

Material: Ge, ZnSe, CaF2, UVFS, FS, BK7, H-K9L
Diameter: 3 mm
ROC1: Not Specified
ROC2: Not Specified
Available Focal Lengths: 100mm to 1000mm
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 ...

Specifications

Material: Ge, ZnSe, CaF2, UVFS, FS, BK7, H-K9L
Diameter: 3 mm
ROC1: Not Specified
ROC2: Not Specified
Available Focal Lengths: -100mm to -1000mm
Dimension Tolerance +0/-0.2mm Thickness Tolerance ±0.2mm Design Wavelength 546.1nm Surface Quality 60/40 scratch and dig Flatness λ/4@632.8nm Centration <3 arc minutes Focal Length Tolerance ±2% Clear Aperture >90% Chamfer Protective <0.5mmx45deg

Specifications

Material: UVFS, FS, BK7, H-K9L
Diameter: 25.4 mm
ROC1: 20.58 mm
ROC2: 90 mm
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