| Precision 
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                      | Ball 
                          lenses are commonly used for laser collimating and focusing, 
                          laser-to-fiber coupling, fiber-to-fiber coupling, and 
                          fiber-to-detector coupling.  
                       |   
                      | Material: 
                          BK7 Diameter Tolerance: ¡À3¦Ìm
 Radius Tolerance: ¡À1.5¦Ìm
 Center Thickness Tolerance: ¡À0.05mm
 Surface Quality: 40-20 Scrath and dig
 
 |  |   
                      | 
                           
                           
                            | Diameter 
                                ¦µ(mm) | BK7 | UV 
                                Fused Silica |   
                            | Part 
                                No. | Part 
                                No. |   
                            | 0.3 | BL0101 | BL0201 |   
                            | 0.5 | BL0102 | BL0202 |   
                            | 1.0 | BL0103 | BL0203 |   
                            | 2.0 | BL0104 | BL0204 |   
                            | 3.0 | BL0105 | BL0205 |   
                            | 4.0 | BL0106 | BL0206 |   
                            | 5.0 | BL0107 | BL0207 |   
                            | 6.0 | BL0108 | BL0208 |   
                            | 8.0 | BL0109 | BL0209 |   
                            | 10.0 | BL0110 | BL0210 |  |  
                      | 
                           
                            |  | Other 
                              sizes are available upon request. |  |  |  |