| Specifications | 
	
	| Material: Calcium Fluoride single crystal Diameter Tolerance: +0.0, -0.1mm
 Thickness Tolerance: ± 0.2mm
 Clear Aperture: >80%
 Parallelism: 1' arc minute
 Surface Quality: 80-50 scratch and dig
 Flatness: ll/2 at 632.8 nm
 Bevel: <0.25mm x 45°
 |  | 
	
	|   
	
		
		| f (mm) | T (mm) | Part No |  
		| 10.0 | 6.0 | WN0201 |  
		| 12.7 | 6.0 | WN0202 |  
		| 25.4 | 6.0 | WN0203 |  
		| 38.0 | 6.35 | WN0204 |  
		| 50.0 | 6.0 | WN0205 |  
		| 50.0 | 10.0 | WN0206 |  
		| 76.2 | 10.0 | WN0207 |  | 
	
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		|  | Please refer to the Material Chapter for more information about CaF2. |  
		|  | Please refer to Coating Chapter for more infomation of coating. |  
		|  | Other sizes and coatings are available upon request. |  |