TOYMYTOY Convex Lens Glass Lens Double Convex Clear Optical Lens Diameter 30mm Focal Length 50mm Experimental Supplies Experimental Equipment

Diameter: 30mm. Focal length: 50mm. A convex lens made of optical glass. An optical lens with a positive focus, used for image magnification, light focusing, and relay optical systems. Please feel free to contact us if the product you purchased from us has a failure or defect due to our design or manufacturing responsibility. Contact information: "Account Service" in Account Service → "Order History" → "Seller" → "Ask a Question" Description    -Material: Glass. -Diameter: 3cm. -Focal length: 50mm