Meniscus Cylindrical lens
  • Meniscus Cylindrical lens
  • Meniscus Cylindrical lens
  • Meniscus Cylindrical lens
  • Meniscus Cylindrical lens

Meniscus Cylindrical lens

parameter:

Meniscus Cylindrical Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while maintaining the angular resolution of the optical assembly. This lens shape is best used when one conjugate is relatively far from the lens.

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These economical meniscus lenses provide a wide range of longer focal lengths at low cost. The 60mm lenses have moulded edges whilst the 25mm are edged and centred. Each lens has one spherical and one Meniscus Cylindrical lenstoroidal surface, giving zero power in one cross-section and positive or negative power in the orthogonal section. The overall effect is that of a conventional cylindrical lens.

Specification


MaterialOptical glass/ Fused silica/ sapphire   etc.
Dimension2mm~300mm
Dimension   tolerance±0.05mm~±0.1mm
Centre   Thickness2mm~20mm
Surface   quality60/40, 40/20, 20/10
Surface   accuracyλ/2~λ/10@632.8nm,532nm
Clear   Aperture>85% dig diameter
Centration<3arc min~ 30arc sec
CoatingAs per customer’s request




Type No.Diameter
    (mm)
Focal Length
    (mm)
Black Focal Length
    (mm)
BRD-MC-0125-201200
BRD-MC-0225209200
BRD-MC-0325-252250
BRD-MC-0425258250
BRD-MC-0525-403400
BRD-MC-0625407400
BRD-MC-0725-503500
BRD-MC-0825508500
BRD-MC-0925-671667
BRD-MC-1025675667
BRD-MC-1125-10071000
BRD-MC-122510101000
BRD-MC-1325-13421333
BRD-MC-142513461333
BRD-MC-1525-20132000
BRD-MC-162520182000
BRD-MC-1725-40264000
BRD-MC-182540304000
BRD-MC-1960-252250
BRD-MC-2060258250
BRD-MC-2160-403400
BRD-MC-2260407400
BRD-MC-2360675667
BRD-MC-2460-13421333
BRD-MC-2560-20132000
BRD-MC-2665-161160
BRD-MC-2765166160
BRD-MC-2865-201200
BRD-MC-2965209200
BRD-MC-3065407400
BRD-MC-3165-503500
BRD-MC-3265508500
BRD-MC-3365-671667
BRD-MC-3465675667
BRD-MC-3565-10071000
BRD-MC-366510101000
BRD-MC-376513461333
BRD-MC-386520182000
BRD-MC-3965-40264000
BRD-MC-406540304000



Projection Systems,Imaging Systems,Optical Display Systems, Laser Measurement Systems.

It is a lens that one surface is convex shape, another surface is concave with cylindrical shape, its role is making beam converging or diverging on a plane, and that beam does’t work for the perpendicular plane(cylindrical axis) with it. A cylindrical lens can turn a transmitted plane wave into a cylincrical wave, or turn an original cylindrical wave into a plane wave or spherical wave, such a kind of lens can correct ocular astigmation.

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