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Page 2 - Meniscus

Alkor Meniscus Lenses
Alkor Technologies
We produce custom CaF2 plano-convex lens, plano-concave CaF2 lenses; biconvex and bi-concave CaF2 lenses to 100% meet customer\'s demands. We can make lenses from 3 to 80mm diameter with almost any focal length. Calcium Fluoride is used for lenses in transmision range 0.17-10µm. Degradation due to to moisture in the atmosphere is ...

Specifications

Material: CaF2
Diameter: custom mm
ROC1: custom mm
ROC2: custom mm
Negative Meniscus Spheric Lens
FOCTek Photonics
FOCtek provides five kinds of spheric lens forms, or shapes, that determine the imaging Characteristics of the lenses, they are plano-convex, plano-concave, Double-convex, Double-concave and Meniscus.

Specifications

Material: CaF2, UVFS, FS, BK7
Diameter: custom mm
ROC1: custom mm
ROC2: custom mm
Positive Meniscus Spheric Lens
FOCTek Photonics
FOCtek provides five kinds of spheric lens forms, or shapes, that determine the imaging Characteristics of the lenses, they are plano-convex, plano-concave, Double-convex, Double-concave and Meniscus.

Specifications

Material: CaF2, UVFS, FS, BK7
Diameter: custom mm
ROC1: custom mm
ROC2: custom mm
CONVEX AND CONCAVE MENISCUS LENSES MCX - MCC
Tecnottica Consonni
Meniscus lenses are divided into positive and negative: both are distinguished from other lenses since, by definition, have a convex surface and a concave surface. These lenses are often used to shorten or lengthen the focal length of an optical system that already exists. In addition, meniscus lenses can be properly designed so that ...

Specifications

Material: UVFS, BK7
Diameter: custom mm
ROC1: custom mm
ROC2: custom mm
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: -- mm
ROC2: -- mm
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: -- mm
ROC2: -- mm
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
The Positive Meniscus Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. Meniscus lenses as two curves of the lens lies on the same direction.

Specifications

Material: Ge
Diameter: 25.45 mm
ROC1: 33.72 mm
ROC2: 90.0 mm
Surface Quality: 40-20 scratch and dig
The diameter 30mm, Thickness: 2mm, Height: 15mm Material: H-K9LOutside Diameter (mm) 30Inside Diameter (mm) 26Diameter Tolerance (mm) ±0.2Clear Aperture CA (mm) 180°Outside Radius (mm) 15±0.1Inside Radius (mm) 13±0.1Height (mm) 15Wall Thickness (mm) 2.0Thickness irregularity ...

Specifications

Material: H-K9L
Diameter: 30 mm
ROC1: 15 mm
ROC2: 12 mm
Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex.  If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or ...

Specifications

Material: UVFS, FS, H-K9L
Diameter: - mm
ROC1: - mm
ROC2: - mm
Diameter Range: Custom
Lenses are classified by the curvature of the two optical surfaces. A lens is biconvex (or double convex, or just convex) if both surfaces are convex.  If both surfaces have the same radius of curvature, the lens is equiconvex. A lens with two concave surfaces is biconcave (or ...

Specifications

Material: BK7
Diameter: - mm
ROC1: - mm
ROC2: - mm
Diameter Range: Custom