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PATIKIL 5 Pack Convex Lens, 14mm OD 20mm Focal Length Optical Lenses - size: 14mm OD x 4.1mm H x 20mm Focal L

PATIKIL 5 Pack Convex Lens, 14mm OD 20mm Focal Length Optical Lenses - size: 14mm OD x 4.1mm H x 20mm Focal L

$9.25 USD
$9.25 USD
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About this item

  • Specification: Color: Clear; Material: Borosilicate Glass; Light Transmittance: 92%; Refractive Index: 1.474; Operating Temperature: -50°C to 450°C; Focal Length: 4mm / 0.16 inch; Outer Diameter: 4mm / 0.16 inch; Height: 2mm / 0.08 inch; Packing List: 5 x Convex Lens
  • Advantage: Convex lenses are made of borosilicate glass, which is more resistant to high temperatures, has higher strength, and higher light transmittance than other materials, ensuring scratch resistance and long-term use. The beam spot is uniform, with no black holes, shadows, or dark areas. Features ground edges for safety and polished surfaces for uniform light transmission.
  • Application: This flat convex is applicable to LED spotlights, car lights, focusing flashlights, projection lights, explosion-proof lights, down lights, and other lighting products. Suitable for reading small text in newspapers, books, menus, or labels, these lenses serve as versatile tools for science experiments, DIY telescope projects, or office tasks.
  • Instruction: Place the lens directly over small text or objects to magnify details. With an adjustable beam angle, the actual focusing angle is determined by adjusting the distance between the lens and the LED.
  • NOTE: Clean with a soft cloth to maintain transparency.

Low stock: 10 left

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Reviews

  • ⭐⭐⭐⭐⭐

    Emily Carter — Seattle, Washington

    The science kit was clearly organized and easy to follow. It made our weekend project feel enjoyable and gave us plenty of opportunities to explore each idea together.

  • ⭐⭐⭐⭐⭐

    Daniel Brooks — Austin, Texas

    I liked the variety of hands-on projects available at TinkerVanta. The kit we selected was engaging, practical, and well suited to a curious beginner.

  • ⭐⭐⭐⭐⭐

    Lauren Mitchell — Denver, Colorado

    The building project kept us interested from start to finish. The finished model was rewarding to complete, and the activity encouraged creative problem-solving along the way.

  • ⭐⭐⭐⭐⭐

    Jason Reed — Portland, Oregon

    Our electronics project was a fun introduction to circuits and basic engineering concepts. The hands-on format made the activity easier to understand and more memorable.

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FAQ

1. What types of products does TinkerVanta offer?


TinkerVanta offers science kits, engineering projects, robotics, electronics, building models, maker crafts, workshop supplies, and educational exploration activities for a variety of interests and skill levels.

2. Are your products suitable for all ages?


Recommended ages vary by product. Please review the age guidance, skill level, dimensions, included components, and safety information on each product page before ordering. Adult supervision may be required.

3. How do I choose the right kit?


Consider the user’s age, interests, experience, and preferred project type. Product descriptions provide information about contents, difficulty, assembly requirements, and recommended use to help you compare available options.

4. Are batteries, tools, or additional materials included?


Included components vary by product. Some projects may require batteries, household materials, tools, adhesives, or other supplies that are sold separately. Please check the individual product description before purchasing.

5. When will I receive my tracking number?


Tracking information is usually provided within 3–5 business days after an order is placed. During busy periods or when additional processing is needed, it may take up to 7–8 business days.

6. How long does delivery take after tracking is provided?


Delivery time depends on the carrier, destination, weather, and other transportation conditions. After tracking becomes available, delivery may require approximately 4–5 additional business days or longer in some circumstances.

7. Why is my tracking information not updating?


Carriers may need additional time to scan and update a shipment after the tracking number is created. Please allow a few business days for movement to appear. If there is still no update, contact us for assistance.

8. Can I change or cancel my order?


Contact us as soon as possible after placing your order. We will try to accommodate your request, but changes or cancellations cannot be guaranteed once processing or shipment preparation has begun.

9. What should I do if my order arrives damaged, defective, or incomplete?


Contact us promptly with your order number, a description of the issue, and clear photos of the product, packaging, and shipping label. We will review the information and explain the available resolution options.

10. How can I contact TinkerVanta?


Email us at zircorncirkne@gmail.com or call +1 (936) 260-5549. Please include your order number when contacting us about an existing purchase so we can assist you more efficiently.

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