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Bi-Concave

Specification Standard
Material As indicated below
Diameter Tolerance +0.00mm / - 0.13mm
Design Wavelength As indicated below
Effective Focal Length ± 1% @ design wavelength
Thickness Tolerance ± 0.05mm
Clear Aperture As indicated below
Surface Quality 60-40
Standard Bevel 0.005" – 0.060" face width depending on diameter
Coating As indicated below

Notes:
In reference to the columns below labeled "DWL", this means Design Wavelength & refers to the Effective Focal Length(mm) for each lenses.

Note: Items below are available While Supplies Last.


 Material 

 Diameter
(mm) 

 Edge
Thickness
Variation (ETV) 

 CT (mm) 

 DWL
4.0µm 

 DWL
10.6µm 

 Clear
Aperture 

 Surface
Irregularity 

 Coating 

 Part Number 

Price
Discounted Price
Action
Ge21.96
+ 0.0, - 0.033		< 0.01mm4-18.674 -80%0.25 fringes @ 0.63µmBBAR @ 3-5µm903841-01238.00142.80
ZnS22.730.025mm2
± 0.70		 --78.40695%2 fringes @ 0.63µmAR @ 3-12µm
both sides		9000-7790273.00163.80


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