R2: Concave, R = 109.762mm. R1: Convex, R = 10.055mm. 10PCS Φ12.75mm Concave-convex Lens 12.29mm Short Focal Length DIY Optical Lens. Focal length: 12.29mm. Coating: Single layer MgF2 (QWOT) quarter-wave optical thickness at 855nm, R< 0.2% at 855nm, 0° AOI.
