20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Double Convex Biconvex Lens Magnifier Focal Length 40 50 150 200 MM

Product Specifications Material: K9 Optical Glass Lens Type: Double Convex Lens / Biconvex Lens Quantity: 1 Piece Size Parameter Guide D = Diameter F = Focal Length C = Center Thickness E = Edge Thickness Unit: mm Example: D20 F40 C4.3 E2.5 means: Diameter: 20mm Focal Length: 40mm Center Thickness: 4.3mm Edge Thickness: 2.5mm Measurement Notice All dimensions are measured manually. Please allow a measurement tolerance of approximately ±0.3mm . Lens Structure Both surfaces of the lens are convex. Depending on the focal length and specification, the curvature or convex height of the two surfaces may not be exactly the same. This is normal and does not indicate a product defect. Package Includes 1 × K9 Optical Glass Biconvex Lens Please Note Please carefully check the diameter, focal length, center thickness, and edge thickness before placing your order to make sure the selected lens meets your application requirements.