Plano-Concave Lens    

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.