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描述
RFQ

Plano concave lens

Product Info

Plano-concave lens has a negative focal length, diverges collimated incident light, and forms only virtual images which are seen through the lens. It is often used to expand light beams or increase focal lengths in existing 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. 


Plano-concave lens has a negative focal length, diverges collimated incident light, and forms only virtual images which are seen through the lens. It is often used to expand light beams or increase focal lengths in existing 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.