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Description Collimator focusing lens after focusing, the sunshine level is obvious and the transmittance is high. (Wave length): 400-700nm. (LENS DIAMETER): medium 10m. (The Lens Thickness): (EFL): 11mm/25mn/30mm/ 45mm/ 70mm. (LASER POWER LOSE): -%. (Divergence angle): (Coating): zero AR. Sheet material: K9 glass PACKAGE: 10pcs K9 Glass Laser Lens φ 10mm Plane Convex Focusing Lens Focal Length 25mm / 30mm/ 45mm