ULTECHNOVO Convex Lens Double Glass Concave and Optical Diameter 30mm Focal Length 50mm for Labs, 1PCS

DOUBLE CONVEX OPTICAL DESIGN: This double convex lens curves outward on both sides for classroom demonstrations involving light refraction, focusing and image formation, giving students a practical optical component for physics experiments 30MM DIAMETER FOR SETUPS: Measuring 30 mm in diameter, this convex lens offers a compact format for optical experiments and teaching demonstrations, making it convenient to position with other science equipment during classroom or laboratory work 50MM FOCAL LENGTH: The 50 mm focal length provides a defined optical specification for demonstrations and experiments involving focal behaviour, allowing this biconvex lens to be selected for setups that require these stated dimensions OPTICAL GLASS CONSTRUCTION: Made from clear optical glass with polished surfaces and ground edges, this convex glass lens provides a straightforward component for observing transmitted light during optics lessons, demonstrations and experiments FOR PHYSICS EDUCATION: This 30mm glass lens is supplied as one piece for school science, physics teaching and laboratory demonstrations, helping students explore basic optical principles through hands-on experiments with a physical lens