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Negative Meniscus Lenses


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Specifications:

MaterialBK7 or UV fused silica
Focal  Length Tolerance±1% @589nm
Design Wavelength589nm
Centration≤3′
Diameter  Tolerance+0/-0.1mm
Clear Aperture≥ central 90%  of  diameter
Center Thickness  Tolerance±0.1mm
Surface Quality20/10(UVFS)/ 40/20(BK7)
Surface Accuracy

≤ 1.5λ power,λ/2 irregularity(UVFS)

≤ 1.5λ power,λ/4 irregularity(BK7)

Chamfers0-0.8mm face width×45°±15°


 

Order Information:


                             LNS    ----     254     ----     R950    ----     R459    ----    BK7   

                                ↓                           ↓                         ↓                          ↓                        

                    Product Code    Diameter  25.4mm    R1=95mm       R2=-45.9mm         Material


BK7 Meniscus  Lenses:


Part NumberDia(mm)Tc(mm)Te(mm)

R1(mm)

R2(mm)

EFL(mm)

Material
LNS-254-R950-R459-BK725.42.863.895.0-45.9-175.0BK7
LNS-254-R1000-R431-BK725.43.734.77100-43.11-150.0BK7
LNS-254-R900-R373-BK725.42.023.3100-38.973-125.0BK7
LNS-254-R900-R326-BK725.42.323.92100-33.8-100BK7


Note:

     Other sizes and focal length are available upon request. Also the lens ring mounts are available upon request.


  • Negative Meniscus Lenses2017-08-24download

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