| 
             Material  | 
            
             BK7, UV FS  | 
        
| 
             Surface quality  | 
            
             20-10 scratch & dig (MIL-PRF-13830B)  | 
        
| 
             Clear aperture  | 
            
             90% of the diameter  | 
        
| 
             Diameter tolerance  | 
            
             +0.00, -0.12 mm  | 
        
| 
             Wedge tolerance  | 
            
             ±3 arcmin  | 
        
| 
             Flatness  | 
            
             λ/10 @ 633 nm  | 
        
| 
             Tickness tolerance  | 
            
             ±0.2 mm  | 
        
| EKSMA Optics Precision Wedge Prisms
						 162.44 kB  | 
					
By selecting the appropriate wedge it is simple to create a precise beam deviation without affecting other beam parameters. If two wedges are used together with the sloping surfaces in close proximity it is possible to produce a continuous variation of beam deviation by counter - rotating the wedges.
Wedge prisms are available in alternative materials, such as UV grade fused silica, and in different shapes and sizes, or with various anti-reflection coatings.