In the world of embedded vision and industrial design, space is the ultimate luxury. Engineers are constantly fighting a war against millimeters. You need to fit a camera into a robotic arm, a slim bio-medical device, or a discreet inspection unit, but you have almost zero room to maneuver.

Usually, when you shrink the lens, you shrink the performance. You get dark corners, low resolution, or tiny sensor compatibility.

Not anymore.

Meet theJSD3122. It’s the optical equivalent of a TARDIS—small on the outside, massive performance on the inside. This lens proves that you don't need a bulky barrel to get professional-grade imaging.

Here is why the JSD3122 is the new champion of compact optical design.

1. The Magic Number: TTL 20.49mm

Let’s talk dimensions. TheTotal Track Length (TTL)of this lens is a mere20.49mm.
To put that in perspective, that is shorter than the width of a standard SD card.
For product designers, this is a dream come true. It means you can shave millimeters off your housing depth. whether you are designing a handheld scanner or a compact sensor module for a drone, the JSD3122 fits where other lenses simply can't.

2. Tiny Size, Huge Sensor (1/2" Support)

Here is the engineering marvel: usually, lenses with such a short TTL are designed for tiny mobile phone sensors (1/4" or smaller).
The JSD3122 defies physics by covering a massive1/2" Image Circle.
This allows you to pair this compact lens with large, powerful industrial sensors. You get the light-gathering capability and dynamic range of a big camera system, all packed into an M12 form factor that fits in the palm of your hand.

3. 12MP: No Compromise on Clarity

"Compact" shouldn't mean "blurry." The JSD3122 is rated for12MP resolution.
It delivers razor-sharp images from edge to edge. If you are building professional equipment—like medical diagnostic tools or precision industrial robots—you can’t afford soft images. This lens ensures that your high-end sensor delivers the high-fidelity data it was paid to capture.

4. Wide View, Straight Lines

With anEFL of 3.94mm, this lens offers a92° Field of View. It gives you a broad look at the world, perfect for situational awareness or scanning wide areas.
But unlike a GoPro, it doesn't bend the world. WithDistortion < -1.54%, lines remain straight and true. This geometric accuracy is vital for machine vision algorithms that need to measure and identify objects without getting confused by the "fish-eye" effect.

5. Professional Grade Only

Make no mistake—this isn't a lens for a consumer webcam or a selfie camera. The JSD3122 is built for the rigors of industry. It uses a standardM12 Threadfor secure mounting and is designed to withstand the demands of 24/7 operation in professional environments.

The Summary

If your project is tight on space but hungry for quality, theJSD3122is your solution. It combines a microscopic20.49mm TTLwith a massive1/2" sensor coverageand12MP clarity.

Stop sacrificing performance for size. With the JSD3122, you can have both.

Our official email address: info@jsdoptical.com