Specifications

Material: BK7 or UV fused silica    
Design Wavelength: 546.1nm    

Design Index:           

   BK7: 1.5183 ± 0.0005    

   Fused silica: 1.46008 ± 0.0005    
Diameter Tolerance: +0.0, -0.15mm    
Paraxial Focal Length: ± 2%    
Centration: 3 arc minutes      
Clear Aperture: >80%    
Surface Irregularity: λ/4@632.8nm    
Surface Quality: 60-40 scratch and dig  

Protective Bevel    
Other materials are also available.   
AR coating is available apon request.