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描述
RFQ

Positive meniscus lens

Product Info

These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations. 


The center thickness of positive meniscus lens is bigger than edge thickness. 


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Specifications

 

Material:

N-BK7, Fused silica

Diameter:

+0/-0.2mm

Clear aperture:

> 90% of diameter

Thickness:

+/-0.1mm

Radius:

+/-0.1%

Centration:

< 3 arc minutes

Surface quality:

60-40 S/D

Power:

3 fringes

Irregularity:

0.5 fringe

Coating:

with or without AR coating

Bevel:

Protective bevel  

 

* Specifications are subject to the dimensions and material used. Other materials such as Ge, Si, ZnSe, ZnS, CaF2, MgF2… are available upon request. 


These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations. 


The center thickness of positive meniscus lens is bigger than edge thickness. 



 

Specifications

 

Material:

N-BK7, Fused silica

Diameter:

+0/-0.2mm

Clear aperture:

> 90% of diameter

Thickness:

+/-0.1mm

Radius:

+/-0.1%

Centration:

< 3 arc minutes

Surface quality:

60-40 S/D

Power:

3 fringes

Irregularity:

0.5 fringe

Coating:

with or without AR coating

Bevel:

Protective bevel  

 

* Specifications are subject to the dimensions and material used. Other materials such as CaF2, Si, Ge, ZnSe… are available upon request.