Double Convex Lens Set with Precise Focal Lengths
Price range: 25.99 € through 29.99 €
🆓 FREE SHIPPING with tracking number!
✅ No Import Taxes on delivery!
🏷️ Condition: New
🚚 Ships from: HK Warehouse – Hong Kong (China)
↩️ Easy Returns within 30 days of receipt
🙋 Any questions? Contact Jake
Experience high-quality optical clarity with these double convex biconvex lenses made from premium K9 optical glass, available in diameters of 19mm, 23mm, 30mm, 42mm, 44mm, and 50mm. With focal lengths ranging from 20mm to 300mm—including 20mm, 30mm, 42mm, 50mm, 100mm, 200mm, and 300mm—these lenses feature precisely measured center (C4 to C14.3mm) and edge thicknesses (E1.5 to E3.7mm). Their smooth, polished surfaces reflect subtle light, enhancing optical performance for focusing light or transmitting images in various systems. Each lens is crafted for accuracy within 0.3mm, with both surfaces convex, ensuring clarity and reliability in your optical projects.
This high-quality this double convex lens set
Experience crystal-clear optical performance with this set of high-quality double convex lenses. Crafted from premium K9 optical glass, these lenses feature a sleek, transparent surface with a highly polished, glossy finish that reflects light beautifully along the curved surfaces. The symmetrical, elongated oval shape and gently rounded convex surfaces make them both elegant and highly functional. Available in diameters of 19mm, 23mm, 30mm, 42mm, 44mm, and 50mm, each lens is designed with precision to ensure smooth light focusing and transmission. These lenses are ideal for various optical applications such as focusing point sources or transmitting images efficiently to other devices. Their robust construction promises durability and consistent performance, making them a perfect choice for professional and hobbyist optical projects.
Keys features of this double convex lens set
- Made from high-grade K9 optical glass, providing excellent clarity and durability for professional optical use.
- Available in multiple diameters ranging from 19mm to 50mm, suitable for various optical system requirements.
- Focal lengths vary from 20mm to 300mm, enabling versatile use in focusing and image transmission applications.
- Precisely shaped symmetrical, elongated oval design with smooth, convex surfaces for optimal light focusing.
- Edges are sharply defined at points where the curved surfaces meet, ensuring accurate optical alignment.
- Manual size measurements with an accuracy within 0.3mm, with both sides convex, although some heights may vary slightly for each lens.
- Designed to transmit images or focus light from point sources, perfect for use in microscopes, projectors, or optical experiments.
This double convex lens set is perfect for your optical needs, buy now!
Imagine enhancing your optical setups with precision-engineered lenses that deliver outstanding clarity and focusing performance. Whether you're a professional or an enthusiast, this set will become your go-to solution for focusing light and transmitting images with ease. With their durable construction and meticulously polished surface, these lenses promise long-lasting reliability and consistent results. Don’t miss the opportunity to elevate your projects—add this versatile set of double convex lenses to your collection today and bring your optical visions to life with confidence and precision.
| Diameter | D19 F20 C4 E1.5, D50 F200 C4.9 E2, D50 F300 C5 E3, D50 F100 C8.7 E3, D44 F42 C13.8 E3, D42 F50 C8 E2.3, D30 F30 C10 E1.5, D50 F50 C14.3 E3.7, D30 F50 C6.5 E3, D23 F30 C5.5 E2 |
|---|---|
| Condition | New |
| Warehouse | HK Warehouse – Hong Kong |
🌟 Every Purchase Comes with Direct Access to Jake 😎 from JakeSpecial, PhD in Pure Mathematics, Innovator and Entrepreneur — bringing broad expertise and trusted insight across all Special items & ensuring expert support and guidance at every step.
WHY CHOOSE JAKESPECIAL? 🤔
Shopping online isn't just about buying a product—it's about having a smooth, reliable, and worry-free experience. At JakeSpecial, I don't just sell products, I ensure that every order is handled with care, efficiency, and full support 🌟
Here's why you can shop with confidence:
1. Customer Service That Has Your Back 🤝 – If there's any issue with your order, I personally handle it—no delays, no excuses. Whether it's a delivery concern, a damaged item, or any other issue, I fix it, fast.
2. Hassle-Free Resolutions ✨ – Unlike many sellers who dodge responsibility, I take full ownership of every sale. If there's a problem, I solve it directly. Your satisfaction is my priority.
3. Fast & Reliable Shipping 🚀 – My shipments are integrated into high-priority international logistics networks through Cainiao Global Express, ensuring most orders arrive within 7-10 days.
4. Full Tracking Transparency 📍 – Every order comes with a tracking number that lets you monitor your package in real time.
5. Expertise in Business & Problem-Solving 🎓 – I am not just an entrepreneur in the e-commerce business; I also hold a PhD in Mathematics and continue to work at the frontier between computer science and pure mathematics. My expertise spans multiple advanced fields, allowing me to approach complex logistical, operational, and technical challenges with precision and efficiency. This mindset of structured problem-solving and analytical thinking is what enables me to offer a smooth, optimized, and highly reliable shopping experience. Whether it's managing logistics, handling unexpected issues, or improving customer service, I apply the same rigorous problem-solving approach that I use in advanced mathematical research.
When you buy from JakeSpecial, you're not just getting a product—you're getting a professional, well-managed, and worry-free shopping experience with full customer support and a problem-solving approach you won't find elsewhere 💫
FAST & SECURE SHIPPING 📦
I use fast, reliable, and monitored logistical routes to your region. Once your package reaches your country, it is handed over to a local subsidiary of Cainiao Global Express or a major national carrier, such as Evri or Royal Mail for the UK, Colissimo for France, Poste Italiane for Italy, Correos for Spain, or Bpost for Belgium 🌍
I typically dispatch items within 2 business days for products shipped from my warehouse in France and within 5 business days for products shipped from my Hong Kong warehouse. Every package comes with a tracking number, with estimated delivery times ranging from 10 to 20 days, depending on your location. However, most packages arrive within 7 to 10 days ⚡
Q: How long does shipping take? ⏱️
A: Most packages arrive within 7-10 days, with full tracking available. The Cainiao Global Express logistics network ensures reliable transit times, unlike standard shipping services that may take much longer.
Q: What is the journey of a package? 🗺️
A: Every package follows a highly optimized and secure logistics path to ensure fast and reliable delivery. It begins at my warehouse in Hong Kong, where it is prepared for shipment before being transferred to Cainiao Global Express' logistics hub in Mainland China, marking the official start of the shipping process. From there, the package moves through Cainiao's high-efficiency logistics network, ensuring continuous monitoring and rapid transit to its destination country. Once it arrives, it is either handed over to a local Cainiao subsidiary or entrusted to a major national carrier for smooth final delivery. This process guarantees secure, fast, and well-tracked shipping, providing the same level of efficiency as major global retailers.
EASY RETURNS 🔄
If you need to make a return, there's no need to ship the item all the way back to Asia. I make returns easy by accepting them directly at my warehouse in Marseille, France. Feel free to reach out to me — I'm here to make the process as smooth as possible 📬
TRANSPARENCY AND EXCELLENCE ✨
All items are presented accurately in photos and descriptions. If you have any issues with your purchase, please contact me. Your satisfaction is my top priority 💯
PASSION & UNIQUE EXPERTISE 💪
I take pride in offering meticulously crafted items, carefully curated by me, Jake, PhD. Together with Marwa, we bring passion and excellence to every detail ❤️
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