- description
 - parameters
 
| 
					 Model  | 
				
					 Diameter  | 
				
					 Focal Length  | 
				
					 Back focal length  | 
				
					 R1= -R2(mm)  | 
				
					 Center thickness  | 
				
					 Edge thickness  | 
			
| 
					 OCL4-010-010  | 
				
					 10.0  | 
				
					 -10.0  | 
				
					 -10.480  | 
				
					 -10.58  | 
				
					 1.50  | 
				
					 4.01  | 
			
| 
					 OCL4-012-012  | 
				
					 12.5  | 
				
					 -12.5  | 
				
					 -12.480  | 
				
					 -12.64  | 
				
					 1.50  | 
				
					 4.81  | 
			
| 
					 OCL4-025-025  | 
				
					 25.0  | 
				
					 -25.0  | 
				
					 -25.66  | 
				
					 -26.16  | 
				
					 2.00  | 
				
					 8.36  | 
			
| 
					 OCL4-040-040  | 
				
					 40.0  | 
				
					 -40.0  | 
				
					 -40.82  | 
				
					 -41.74  | 
				
					 2.50  | 
				
					 12.71  | 
			
| 
					 OCL4-050-050  | 
				
					 50.0  | 
				
					 -50.0  | 
				
					 -50.99  | 
				
					 -52.15  | 
				
					 3.00  | 
				
					 15.77  | 
			
	
	PS: Φ- Diameter,R1- Radius,Tc- Center thickness,Te- Edge thickness,f- Focal Length,fb- Back focal length







