{"product_id":"double-convex-glass-lens-50mm-100mm-focal-length-physics-stem-lab","title":"Double Convex Glass Lens 50mm 100mm FL – STEM Physics Lab","description":"\n\u003ch2\u003ePremium Double Convex Glass Lens – 50mm Diameter, 100mm Focal Length\u003c\/h2\u003e\n\u003cp\u003eElevate your science classroom or home lab with this \u003cstrong\u003ePremium Double Convex Glass Lens\u003c\/strong\u003e. Featuring a 50mm (5cm) diameter and a 100mm focal length, this precision-polished optical lens is the ideal tool for demonstrating fundamental optical principles — from light convergence and image formation to the basics of telescopes and projectors. Built for educators, students, and STEM enthusiasts alike, it delivers clear, reliable optical performance every time.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision-Polished Glass:\u003c\/strong\u003e Crafted from high-quality optical glass with smoothly ground edges for safe handling and accurate light transmission.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e50mm (5cm) Diameter:\u003c\/strong\u003e Ideal size for classroom demonstrations, tabletop experiments, and DIY optical projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e100mm Focal Length:\u003c\/strong\u003e Consistent focal length makes it easy to reproduce textbook optical experiments with predictable results.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble Convex Design:\u003c\/strong\u003e Both surfaces curve outward, converging parallel light rays to a single focal point — perfect for illustrating convex lens behavior.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Great for physics labs, STEM teaching demonstrations, DIY telescope and projector builds, and optical experiments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Finished glass with ground edges resists chipping and ensures long-lasting use in educational settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOptical Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLens Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble Convex (Biconvex)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50mm (5cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFocal Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClear \/ White\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 x Double Convex Glass Lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Double Convex Optical Glass Lens (50mm Diameter, 100mm Focal Length)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExplore More Science \u0026amp; Education Tools\u003c\/h3\u003e\n\u003cp\u003eLooking for more tools to complete your STEM or science toolkit? Check out these great options from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-wooden-peg-blank-unpainted-peg-dolls-christmas-decoration-diy-blank-people-crafts-graffiti-decor-wood-craft-figures-tools\"\u003e10Pcs Wooden Peg Blank Unpainted Peg Dolls – DIY Craft Figures \u0026amp; Tools\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pcs-dome-heating-reptile-light-fixtures-aluminum-black-animals-heat-lamp-protector-lampshade-shell\"\u003eDome Heating Reptile Light Fixture – Aluminum Lampshade Shell\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10pcs-durable-gold-blade-nut-metal-universal-trimmer-accessories-anti-loosening-line-left-hand-thread-replacement-parts-1\"\u003e10Pcs Durable Gold Blade Nut Metal Universal Trimmer Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a double convex lens used for in physics education?\u003c\/h4\u003e\n\u003cp\u003eA: A double convex lens (biconvex lens) is used to demonstrate how light rays converge at a focal point. It is commonly used in physics labs and STEM classrooms to illustrate image formation, magnification principles, and the behavior of converging lenses. It is also used in DIY telescope, microscope, and projector builds.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the exact specifications of this optical lens?\u003c\/h4\u003e\n\u003cp\u003eA: This double convex optical glass lens has a diameter of 50mm (5cm) and a focal length of 100mm. It is crafted from polished optical glass with ground edges for safe handling and accurate light transmission.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this lens suitable for students and classroom demonstrations?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This lens is specifically designed for educational use. Its standard 50mm diameter and 100mm focal length make it easy to set up and replicate classic optical experiments, making it an excellent choice for science teachers, STEM educators, and students at all levels.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this lens be used for DIY telescope or projector projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The double convex design and 100mm focal length make this lens well-suited for DIY optical projects such as simple telescopes, projection setups, and magnification experiments beyond the classroom.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a double convex lens used for in physics education?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A double convex lens (biconvex lens) is used to demonstrate how light rays converge at a focal point. It is commonly used in physics labs and STEM classrooms to illustrate image formation, magnification principles, and the behavior of converging lenses. 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