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.