0 ratings
Item #:
146843604
1PC Dia 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Double Convex Biconvex Lens Magnifier Focal Length 40 50 150 200 MM (Size : D26.9
Item #:
146843604
BDT 2115
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Monday, August 03
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Double Convex Biconvex Lens made from premium K9 optical glass for superior clarity and precision.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High-Quality Glass
Made from K9 optical glass, ensuring excellent clarity and minimal distortion for precise magnification in various applications.
Versatile Sizes
Available in multiple diameters (20mm to 58mm), catering to diverse project needs and expanding usability across different optical setups.
Custom Focal Lengths
Offers specific focal lengths like 40mm and 50mm, allowing users to select optimal lenses tailored to their magnification requirements.
Product Details
| Item Weight | 0.1 lbs (50 grams) |
Who Should Buy?
-
Educators
Ideal for teachers and instructors needing visual aids for demonstrating optical principles in physics classes.
-
Hobbyists
Great for DIY enthusiasts who enjoy building telescopes or magnifiers for personal projects.
-
Scientific Researchers
Suitable for researchers requiring precise lenses for experiments involving optics and materials science.
-
Casual Users
Not ideal for users seeking a simple magnifying glass for everyday tasks without additional optical functionality.
-
Non-Technical Buyers
May confuse buyers unfamiliar with focal lengths and lens specifications; simpler options might be better.
-
Children
Not suitable for children due to the delicate nature of glass lenses and potential safety concerns.
Product Description
1PC Dia 20mm 28mm 30mm 42mm 44mm 45mm 50mm 58mm K9 Optical Glass Double Convex Biconvex Lens Magnifier Focal Length 40 50 150 200 MM (Size : D26.9 F50 C5.4 E2)
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a biconvex lens used for?
Answer: A biconvex lens, like the K9 Optical Glass Lens, is commonly used in magnification applications, such as in reading glasses, microscopes, and camera lenses. Its curved surfaces cause incoming light rays to converge, thus forming a magnified image. This feature is ideal for enhancing details in small objects, making it perfect for hobbies such as coin collecting or stamp collecting. -
Question:
What sizes are available for this lens?
Answer: The biconvex lens is available in various diameters, including 20mm, 28mm, 30mm, 42mm, 44mm, 45mm, 50mm, and 58mm. This range allows users to choose a lens size that best suits their specific application, whether it be for precise optical work or general magnification needs. The size you choose can significantly impact the field of view and level of detail achievable in your projections. -
Question:
How do I select the right focal length for my needs?
Answer: Selecting the right focal length, such as 40mm, 50mm, 150mm, or 200mm, depends on the type of work you are doing. A shorter focal length will provide a larger magnification and a closer working distance, while a longer focal length will allow you to view objects that are farther away with less distortion. For instance, if you are inspecting small details on a circuit board, a shorter focal length is preferable. -
Question:
Is the K9 optical glass durable?
Answer: Yes, K9 optical glass is known for its durability and optical clarity. This type of glass is resistant to scratch and has a low dispersion rate, which ensures minimal distortion and high-quality images. Its robust construction makes it suitable for various applications, from educational purposes in classrooms to professional uses in laboratories or workshops. -
Question:
Can this lens be used for photography?
Answer: Definitely! The K9 Optical Glass Lens can enhance photography by providing high-quality magnification, enabling detailed close-up shots. Photographers often use biconvex lenses to capture intricate textures and fine details in products, insects, or plants. This tool is an excellent addition to your photography kit for versatile creative projects. -
Question:
Does the quality of the lens affect the final image?
Answer: Absolutely. The quality of the lens plays a crucial role in determining the clarity and precision of the final image. Higher quality lenses, such as those made from K9 optical glass, minimize distortions and provide better color fidelity. This ensures that detailed images appear sharper and clearer, making them ideal for critical work in fields like microscopy or high-resolution photography. -
Question:
What applications can benefit from using this lens?
Answer: This lens is versatile and can be employed in various applications such as magnifying small texts in books, inspecting intricate designs in jewelry, and enhancing details in scientific instruments. Hobbies like model building or crafting can greatly benefit from the precision this lens provides. Users appreciate the ability to magnify fine details with ease and accuracy. -
Question:
Are there any precautions to take when using the lens?
Answer: Yes, while the K9 optical glass lens is durable, it's important to handle it carefully to avoid scratches or damage. Store it in a protective case and handle it by its edges to maintain its clarity. Additionally, clean it with a microfiber cloth designed for optics to avoid leaving smudges that could hinder visibility, ensuring a clear view during use. -
Question:
Can the lens be used in scientific experiments?
Answer: Yes, the lens is highly suitable for various scientific experiments that require magnification. Whether you are working with biology samples, mineralogy, or examining small mechanical parts, the K9 optical glass lens provides the precision needed for accurate observations. Researchers and students alike can benefit from the enhanced visibility that the lens offers. -
Question:
Where can I buy this lens in Bangladesh?
Answer: You can purchase the K9 Optical Glass Double Convex Biconvex Lens from Ubuy in Bangladesh. Ubuy offers a user-friendly platform with a variety of options for optical lenses, ensuring you can select one that meets your specific requirements.
GatherTOOL Optics Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MT
Mohd
Verified buyer
“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
SJ
Shawati
Verified buyer
“Accurate delivery timing given”
16 June 2026 · via Trustpilot
YB
Youcef
Verified buyer
“Not madly expensive like I thought, and much quicker than promised.”
15 June 2026 · via Trustpilot
LM
Leila
Verified buyer
“Never dealt with Ubuy before, but everything worked out great. Seamless cross border purchasing and shipping. Thanks!”
6/7/2026 · via Trustpilot
KA
Kwame
Verified buyer
“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
BDT 2115
Order now and get it around Monday, August 03
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- High-quality K9 optical glass for enhanced durability.
- Ideal for precision optics with double convex design.
- Various specifications available for customized applications.
- Manual size measurement ensures accuracy within 0.3mm.
- Comes as a single unit, ready for installation.
- Perfect for optical experiments, photography, and laser applications.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.