These are often used for diverging light and image reduction, as well as increasing system focal lengths and collimating converging light beams. Bi-concave lenses are commonly utilized with other lenses in order to reduce the focal lengths of optical systems.
||Center Thickness Tolerance
||Edge Thickness Tolerance||Centering Tolerance
|3.00 – 5.00||40-20||+0/-0.05||+/-0.2||Reference||3-5arc mins|
|5.01 – 25.40||40-20||+0/-0.1||+/-0.2||Reference||3-5arc mins|
|25.41 – 40.00||60-40||+0/-0.1||+/-0.2||Reference||3-5arc mins|
|40.01 – 75.00||80-50||+0/-0.1||+/-0.2||Reference||3-5arc mins|
|P/n||Dia||Dia. Tol (mm)||EFL (mm)||EFL. Tol (mm)||Coating||Quantity||Add to Cart Button|