--- product_id: 548347209 title: "PATIKIL 0.4\" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear" price: "¥2990" currency: JPY in_stock: true url: https://www.desertcart.jp/products/548347209-patikil-0-4-10mm-focal-length-double-convex-and-concave store_origin: JP region: Japan --- # 10mm focal length precision Polished round edges for safe handling Durable scratch-resistant glass PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear **Price:** ¥2990 **Availability:** ✅ In Stock ## Summary > 🔬 Elevate your optics game—because clarity is the new cool! ## Quick Answers - **What is this?** PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - **How much does it cost?** ¥2990 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/548347209-patikil-0-4-10mm-focal-length-double-convex-and-concave) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Premium Durability:** Crafted from high-quality glass that resists scratches and maintains optical integrity over time. - • **Crystal-Clear Optics:** Experience sharper, clearer images with precision-ground double convex lenses. - • **Precision-Engineered:** Consistent curvature and accurate focal length guarantee reliable, repeatable results every time. - • **Safe & Smooth Handling:** Polished round edges ensure comfort and safety during assembly—no more accidental cuts. - • **Versatile Light Control:** Double concave lenses diffuse light perfectly, ideal for advanced physics experiments and optical setups. ## Overview The PATIKIL 0.4" (10mm) Focal Length Lens Set includes double convex and concave glass lenses with polished round edges for safe handling. Designed for precision optical experiments, these durable, scratch-resistant lenses offer consistent curvature and reliable focal length, making them perfect for scientific, photographic, and educational applications. ## Description Double concave lenses are used to disperse light. The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. They can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments.SpecificationColor: TransparentMaterial: GlassFocal Length: 10mmOverall Size: 50 x 8mm, 50 x 9mm (OD*H)Packing List: 2 x Glass LensAdvantageMade of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it.Designed with a double concave shape that let the light diffuse and produces virtual images. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images.The lens is accurately measured and has consistent curvature, ensuring consistent performance and results.InstructionConcave Lens: Place the concave side of the lens facing the object from which you want to disperse the light. Adjust the distance between the object and the lens until the desired level of dispersal is achieved.Convex Lens: Once you have determined the focal length, position the lens in front of the light source. The side of the lens that is curved outward should face the object you want to focus the light on. Move the lens back and forth until the image of the object is in focus on the screen or surface.NOTE: Double concave lenses are often used in combination with other lenses to create specific optical effects. Remember to handle the lens with care to avoid scratches or damage to the surface. ## Features - Color: Transparent; Material: Glass; Focal Length: 10mm; Overall Size: 50 x 8mm, 50 x 9mm (OD*H); Packing List: 2 x Glass Lens - Advantage: Made of quality glass that is durable, scratch resistant, and provides excellent optical performance. Round edges have been polished, it is not easy to hurt your hand when you assemble it. Designed with a double concave shape that let the light diffuse and produces virtual images. The double convex shape of the lens provides a wider field of view, resulting in clearer and sharper images. The lens is accurately measured and has consistent curvature. - Concave Lens: Place the concave side of the lens facing the object from which you want to disperse the light. Adjust the distance between the object and the lens until the desired level of dispersal is achieved. Convex Lens:Once you have determined the focal length, position the lens in front of the light source. Move the lens back and forth until the image of the object is in focus on the screen or surface. - Application: Double concave lenses are used to disperse light. The double convex lens is a type of lens that is thicker at the center than at the edges and is used to gather light. They can make telescopes, suitable for a variety of applications, including scientific experiments, photography, and optical instruments. - Note: Double concave lenses are often used in combination with other lenses to create specific optical effects. Remember to handle the lens with care to avoid scratches or damage to the surface. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.3 out of 5 stars 9 Reviews | ## Images ![PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - Image 1](https://m.media-amazon.com/images/I/41qw2xmASfL.jpg) ![PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - Image 2](https://m.media-amazon.com/images/I/61bdFF6L4VL.jpg) ![PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - Image 3](https://m.media-amazon.com/images/I/51VLPMv+5hL.jpg) ![PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - Image 4](https://m.media-amazon.com/images/I/616XfUM6IuL.jpg) ![PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - Image 5](https://m.media-amazon.com/images/I/61WzLUL1U6L.jpg) ## Frequently Bought Together - PATIKIL 0.4" (10mm) Focal Length Double Convex and Concave Lens Set, Glass Optically Polished Round Edges Lens for Physics Experiment Classroom, Clear - EISCO Double Convex Lens, 500mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass - Ground Edges, Polished - Great for Physics Classrooms - EISCO Double Convex Lens, 1000mm Focal Length, 3" (75mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/548347209-patikil-0-4-10mm-focal-length-double-convex-and-concave](https://www.desertcart.jp/products/548347209-patikil-0-4-10mm-focal-length-double-convex-and-concave) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-13*