BTL-125 Series 1/2.5" C-Mount Precision Measurement Bi-Telecentric Lens
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Product Description
High-Precision Bi-Telecentric Lens for 1/2.5" Area Scan Cameras
The BTL-125 Series Bi-Telecentric Lens is engineered for precision measurement and industrial inspection systems using 1/2.5" area scan cameras. Designed with high telecentricity on both object and image sides, this lens delivers distortion-free imaging and accurate dimensional measurement—even for thick or stepped objects.
Despite supporting compact sensor formats, the BTL-125 series ensures exceptional image fidelity, sharp edge definition, and stable magnification across the entire field of view.
Why Choose a Bi-Telecentric Lens?
Unlike conventional lenses, a bi-telecentric lens maintains constant magnification regardless of object distance within its depth range. This makes it ideal for:
- Precision metrology
- Industrial inspection
- Gauging and measurement systems
- Electronics and PCB inspection
- Semiconductor component measurement
- Automation and robotics vision
Key Features
✔ High Telecentricity (Object & Image Side) – Accurate measurement of thick or uneven objects
✔ Ultra-Low Distortion – Reliable dimensional accuracy
✔ Excellent Edge Sharpness – Crisp image quality across the full field
✔ Large Depth of Field – Stable imaging for complex parts
✔ Large Aperture Design – Enhanced brightness and imaging stability
✔ Rigid Industrial Construction – Durable for factory environments
✔ Compatible with 1/2.5" C-Mount Cameras
✔ Field of View Options: 26mm – 300mm
Built for Industrial Accuracy
The BTL-125 telecentric lens series is optimized for applications where measurement accuracy and repeatability are critical. Its simple yet robust mechanical structure ensures long-term stability in demanding industrial automation systems.
If you are searching for a bi-telecentric lens for precision measurement in the US market, the BTL-125 series provides a reliable and cost-effective solution.
Note 1：The back focal length of model with (LM) is adjustable.
Note 2：Warm tips: The above DOF is just theoretical value at the ideal aperture (eg. ±763@F11). Actual DOF or the DOF what you need, please check with our sales engineer before order cfm.
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Free SDK Provided
1-Year Warranty
BTL-125 Series 1/2.5" C-Mount Precision Measurement Bi-Telecentric Lens
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Product details
Specifications
Resolution
Sensor size
1/2.5"
Wd
73mm-465mm
Mount
Magnification
0.024X-0.277X
Case material
Purchase Note
🧾Notice for U.S. Customers
Due to applicable tariffs, please email your company name and FedEx, UPS, or DHL account number to info@rapixeltech.com after placing your order. (U.S. customers only)
💳 Transaction Fees Are Non-Refundable
When a refund is issued, please note that payment processing platforms do not return their service fees. These fees are not charged by our store, but by third-party providers (Shopify & PayPal). The handling fee will be deducted from a certain percentage of the order amount.(Depending on ways you paid: 2.5%-6%)
✅ Order Production Policy
All of our products are made to order or prepared specifically based on your purchase. We kindly ask customers to confirm their needs before placing an order. If you need assistance or further clarification before ordering, feel free to contact info@rapixeltech.com
Product FAQ
1. Lenses Not Included by Default
Industrial cameras are sold without lenses, as lens selection depends on your specific needs, such as field of view, working distance, resolution, and lighting.This differs from consumer cameras, which often have built-in lenses. We're happy to help you choose the right lens for your application.(info@rapixeltech.com)
2. No Internal Video Recording
Industrial cameras don't record video internally. They capture frames and transmit them in real time via USB, GigE, or Camera Link to a PC. Video recording must be handled by external software. If you simply need basic video recording, a consumer camera may be more suitable.
Exchange & Return Policy
● Please kindly be informed that we do not accept returns or exchanges for any reason other than product defects or quality issues.
● Before placing the order, all customers need to take the responsibility to confirm that the selected product is suitable for your needs and meets your intended application, and we are not responsible for any customer's application. Accordingly please note the following return or exchange requirements will be rejected.
>Misunderstanding or incorrect product selection
>Mismatch for intended use
> Other reasons for personal dissatisfaction
● We are confident to ensure that all our products could reach 100% qualified in QC and QA when they are ready for shipping. But in case any product you receive is damaged, defective or does not match the description provided, you always have the objection period of 3 working days from the receiving date, among when you could submit all your queries or any other comments.
We appreciate your understanding and cooperation in supporting our return and exchange policy. Thank you for shopping, and we look forward to serving you any time.