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Designed for 1/1.8" Large Sensors: Analyzing the Optical Performance of the JSD3840 M12 Lens

Release time:2026/1/22 18:20:54 Article source: SHENZHEN JSD OPTOELECTRONICS CO.,LTD

In the world of industrial imaging, sensors are getting bigger. The 1/1.8" format is quickly becoming the new favorite for engineers who need better low-light performance and wider dynamic range.

But here is the problem: Most compact M12 lenses were built for smaller 1/2.5" or 1/3" sensors. Put an old lens on a new 1/1.8" sensor, and what do you get? Dark corners (vignetting) and blurry edges.

 

The solution? Enter the JSD3840.

This isn't just another board lens. It is an optical powerhouse specifically engineered to unlock the full potential of large-format 1/1.8" sensors. Let's break down the optical performance that makes this lens a game-changer.

 

1. The "Big Sensor" Advantage (Image Circle: 1/1.8")

The standout feature of the JSD3840 is its coverage. Many lenses claim to be "wide angle," but they fail to cover the entire sensor area of a 1/1.8" chip.

The JSD3840 provides full edge-to-edge coverage. No black circles, no soft cornersjust crisp, usable data across the entire frame. It allows your expensive sensor to actually use all the pixels you paid for.

 

2. 20MP: Resolution That Screams Detail

You wouldn't put bicycle tires on a Ferrari, right? So don't put a 5MP lens on a high-end sensor.

With a resolving power of 20 Megapixels, the JSD3840 is designed for the high-density pixel pitch of modern industrial cameras. Whether you are inspecting microchips or monitoring traffic details, this lens delivers a level of sharpness that standard lenses simply cannot match.

 

3. Wide Yet Disciplined (EFL 3.76mm & FOV 100°)

Finding the sweet spot between "wide view" and "too far away" is tough.

EFL: 3.76mm

FOV: 100°

This focal length offers a fantastic 100-degree field of view, perfect for situational awareness or scanning large objects at close range. But usually, 100° implies a curved image...

 

4. The Distortion Defier (<0.4%)

This is where the optical engineering really shines. Despite that wide 100° view, the JSD3840 keeps optical distortion below 0.4%.

For computer vision algorithms, this is a dream come true. It means your AI doesn't have to work overtime correcting fisheye effects. Straight lines on the assembly line remain straight in the image.

 

5. Compact Industrial Build

This lens is built for work, not play. It is strictly for professional, non-consumer applications.

Thread: Standard M12 (S-Mount)

TTL: A tiny 15.8mm

Aperture: F/4.0 (Great depth of field for varying object distances)

 

If you are upgrading your vision system to a 1/1.8" sensor, do not let your lens be the bottleneck.

The JSD3840 combines the coverage you need, the 20MP resolution you crave, and the low distortion your algorithms demand. It is time to let your sensor breathe!

Ready to maximize your 1/1.8" sensor? Contact us to test the JSD3840 today.