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描述
RFQ

Double concave lens

Product Info

Double-concave lens is normally used in combination with other lenses. Typical applications include laser beam expanders, optical character readers, viewers, and projection systems. 



 

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 scratch and dig

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. 


Double-concave lens is normally used in combination with other lenses. Typical applications include laser beam expanders, optical character readers, viewers, and projection systems. 



 

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 scratch and dig

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.