--- product_id: 67248789 title: "Round Double Convex Glass Lens, Classroom Use, 2\" 50mm Focal Length" brand: "eisco" price: "$31.18" currency: USD in_stock: true category: "Eisco" url: https://www.desertcart.us/products/67248789-round-double-convex-glass-lens-classroom-use-2-50mm-focal store_origin: US region: United States of America --- # double convex for light convergence 50mm precise focal length durable polished glass build Round Double Convex Glass Lens, Classroom Use, 2" 50mm Focal Length **Brand:** eisco **Price:** $31.18 **Availability:** βœ… In Stock ## Summary > πŸ”¬ Elevate your optics game β€” don’t just learn light, master it! ## Quick Answers - **What is this?** Round Double Convex Glass Lens, Classroom Use, 2" 50mm Focal Length by eisco - **How much does it cost?** $31.18 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/67248789-round-double-convex-glass-lens-classroom-use-2-50mm-focal) ## Best For - eisco enthusiasts ## Why This Product - Trusted eisco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Double Convex Design:** Maximizes light convergence for crystal-clear focus every time - β€’ **Versatile Application:** Perfect for projectors, demos, and science experiments alike - β€’ **Durable Glass Construction:** Built to withstand classroom rigor and long-term use - β€’ **Educational-Grade Precision:** Engineered specifically for hands-on physics and optics learning - β€’ **Consistent 50mm Focal Length:** Reliable repeatable optics setups for flawless experiments ## Overview The Eisco Round Double Convex Glass Lens is a 2-inch, 50mm focal length precision lens designed for educational use. Crafted from durable, polished glass, it converges light effectively for clear, repeatable optics experiments. Ideal for classrooms and labs, it supports diverse applications from projectors to physics demos, combining reliability with hands-on learning. ## Description The Eisco Round Double Convex Glass Lens is a specialized educational tool designed for physics demonstrations and classroom experiments. With a diameter of approximately 2" (50mm) and a thickness of around 15mm, this lens is crafted to meet the needs of teachers, students, lab technicians, and hobbyists. Its double-convex design is particularly effective for converging light, making it ideal for basic optics experiments. Unlike general-purpose lenses, the Eisco lens is specifically made to enhance educational outcomes, providing a clear and focused light convergence. As the cooler months encourage indoor learning, this lens becomes a valuable asset to explore the principles of optics. Its 50mm focal length ensures repeatable setups, providing a reliable starting point for accurate experimentation. This feature is especially beneficial for educators and science enthusiasts who require consistent results in their optics experiments. Constructed from spherical optically worked glass with highly polished, ground edges, the Eisco lens is both durable and practical. While it may include minor imperfections, these do not compromise its optical purity or performance, allowing users to prioritize functionality over aesthetic perfection. This makes it a dependable choice for prolonged use in educational settings. The Eisco lens is versatile and can be used in various applications, from projector setups to intricate optics demonstrations. Its robust construction ensures it is suitable for repeated use, inviting ongoing discovery and deeper understanding of light behavior. Whether used in a classroom, laboratory, or home setting, this lens supports comprehensive exploration in the fascinating world of optics. ## Features - Eisco Precision Lens: The Eisco double convex glass lens is crafted for educational use, supporting physics demonstrations and classroom experiments. Its round design and consistent build make it perfect for engaging science lessons and hands-on learning - Light-Converging Optics: This round double-convex glass lens is designed to converge light effectively, aiding in basic optics experiments. Unlike flat lenses, its curvature enables clear focus, enhancing classroom and lab activities - Defined Focal Length: With a precise 50mm focal length, this lens provides a reliable starting point for repeatable optics setups. Its consistent measurement supports accurate experiments, promoting a deeper understanding of light behavior - Functional Imperfections: Minor cosmetic imperfections are embraced in this classroom optics lens, without affecting its function. Prioritize educational outcomes over appearance, as each lens maintains high optical purity and performance - Versatile Lens Tool: Ideal for diverse applications, this lens can be used in projects ranging from projector setups to optics demonstrations. Its durable glass construction ensures longevity, making it a reliable choice for science enthusiasts ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0791MSW37 | | Best Sellers Rank | #138,997 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #72 in Science Classroom Optics Kits | | Date First Available | January 15, 2018 | | Item Weight | 1.6 ounces | | Manufacturer | Eisco | | Product Dimensions | 2 x 2 x 0.13 inches | ## Images ![Round Double Convex Glass Lens, Classroom Use, 2" 50mm Focal Length - Image 1](https://m.media-amazon.com/images/I/81H+U6BLDYL.jpg) ## Frequently Bought Together - EISCO Round Double Convex High Optical Purity Glass Lens - 2" (50mm) Diameter - 50mm Focal Length - 15mm Thick Approx. - EISCO 6pc Optical Lens Set, 2" (50mm) Diameter - 3 Double Convex Lens & 3 Double Concave Lens - 200mm, 300mm, 500mm Focal Lengths - Optically True Glass - Ground, Beveled Edges - EISCO Double Convex Lens, 200mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/67248789-round-double-convex-glass-lens-classroom-use-2-50mm-focal](https://www.desertcart.us/products/67248789-round-double-convex-glass-lens-classroom-use-2-50mm-focal) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-29*