In the fast-evolving world of optical engineering, a new trend is taking over: Bigger Sensors.

Whether for industrial automation, high-end security, or professional transport systems, engineers are switching to larger 1/2" sensors to capture more light, reduce noise, and achieve superior dynamic range. But there is a problem. Most compact M12 lenses on the market were designed for the "old days" of tiny 1/3" or 1/4" sensors.

When you pair a big sensor with a small lens, you get vignetting (dark corners) and blurry edges. You basically ruin the performance of your expensive sensor.

It’s time for an upgrade. Enter the JSD3122—the lens engineered specifically to be the soulmate for your 1/2" sensor.

Here is why this lens is the missing link in your optical chain.

1. The Perfect Geometric Match (1/2" Image Circle)

This is the headline feature. The JSD3122 isn't "adapted" for large sensors; it was born for them.
With a full 1/2" Image Circle, this lens projects light across the entire surface area of your sensor. No cropping, no dark corners, and no wasted pixels. It allows you to unlock the full potential of modern global shutter and high-sensitivity sensors found in professional industrial cameras.

2. 12MP: Don't Bottleneck Your System

What is the point of buying a high-resolution sensor if you put cheap glass in front of it? A chain is only as strong as its weakest link.
The JSD3122 offers 12MP Resolution, providing optical resolving power that matches 4K and high-megapixel setups. It ensures that the image striking your sensor is razor-sharp, preserving fine details needed for OCR, defect detection, or facial recognition.

3. Wide Angle, Zero Drama (92° FoV & Low Distortion)

Usually, going wide means accepting the "fish-eye" look. But for professional applications—like measuring parts on a conveyor belt or monitoring a traffic intersection—curved lines are a nightmare.
The JSD3122 solves this with a sophisticated optical design.

The View: A generous 92° Field of View (EFL 3.94mm) covers the scene effectively.

The Geometry: Optical distortion is kept to < -1.54%.
This means straight lines stay straight. It’s a "Linear" experience that simplifies your software processing and increases measurement accuracy.

4. Bright and Compact

Let There Be Light: With an F/2.2 Aperture, the JSD3122 allows ample light to reach that large sensor, boosting performance in low-light environments without requiring long exposure times.

Fit Anywhere: Despite its heavy-duty performance, it keeps a slim profile. With a standard M12 Thread and a TTL (Total Track Length) of just 20.49mm, it is designed to fit into compact industrial housings where space is at a premium.

5. Not for the "Consumer"

Let’s be clear: The JSD3122 is not a toy. It is not designed for cheap webcams or disposable consumer gadgets. It is a precision component built for:

Machine Vision Systems

Intelligent Traffic Systems (ITS)

Professional Security & Surveillance

Industrial Robotics

Conclusion

If you have upgraded your sensor to 1/2", you owe it to your hardware to upgrade your glass. The JSD3122 offers the coverage, the resolution, and the geometric precision you need to stay ahead of the curve.

Give your sensor the partner it deserves. Choose the JSD3122

Our official email address: info@jsdoptical.com