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描述
RFQ

Double convex lens

Product Info

Like Plano-convex lens, double convex lenses have positive focal lengths and form both real and virtual images. Symmetry is assured by finishing both surfaces with the same tool. Because of symmetry, aberrations including coma, distortion and lateral chromatic aberration almost exactly canceled at unit conjugate radio. Double convex lenses have shorter focal lengths than Plano-convex lenses of equal diameter and surface radius.  


p><p><span style=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. 


Like Plano-convex lens, double convex lenses have positive focal lengths and form both real and virtual images. Symmetry is assured by finishing both surfaces with the same tool. Because of symmetry, aberrations including coma, distortion and lateral chromatic aberration almost exactly canceled at unit conjugate radio. Double convex lenses have shorter focal lengths than Plano-convex lenses of equal diameter and surface radius.  


p><p><span style=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.