positive Meniscus lens

Positive meniscus (convex-concave) lenses 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, the convex side of the lens should face the source to minimze spherical aberration.

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Description

He Rui Optics' positive meniscus (convex-concave) lenses 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, the convex side of the lens should face the source to minimze spherical aberration.

Material	optical glass,N-BK7 , Fused Silica, sapphire,Si,Ge,CaF2,LiF,BaF2
Dimensions	3-400mm
Dimension Tolerance	±0.01mm
Thickness Tolerance	±0.01mm
Center thickness	>1mm
Focal Length tol.	±1%
Centration	3 arc minutes
Surface Quality	80/50 60/40 40-20 20-10
Clear Aperture	>90%

Wavelength Range	Substrate Material
180nm-8.0μm	Calcium Fluoride (CaF2)
185 nm-2.1 um	UV Fused Silica
200 nm- 5.0 um	Sapphire
200 nm- 6.0 um	Magnesium Fluoride (MgF2)
220 nm to >50 um	CVD Diamond Windows
230 nm- 1.1 um	UV Fused Silica. Textured Antireflective surface
250 nm- 1.6 um	UV Fused Silica, for 45° AOI
250 nm- 26 um	Potassium Bromide (KBr)
350 nm- 2.0 um	N-BK7
600 nm- 16 um	Zinc Selenide (ZnSe)
1.2- 8.0 um	Silicon (Si)
1.9- 16 um	Germanium (Ge)
2- 5 μm	Barium Fluoride (BaF2)

positive Meniscus lens

positive Meniscus lens

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