In the world of automotive safety, a dashcam is only as reliable as the footage it records. We’ve all seen those grainy, warped videos where you can’t tell if the traffic light was red or green, or read the license plate of a hit-and-run driver.

For professional fleet management, logistics, and high-end automotive black boxes, "blurry" is a liability.

Introducing the JSD3122: A lens designed to move onboard recording from "just okay" to "forensic precision." This is not a lens for a budget consumer gadget; it is an optical engine engineered for professional vehicle monitoring systems.

Here is how the JSD3122 is redefining the standard for automotive imaging.

1. The "Big Sensor" Revolution (1/2" Image Circle)

The biggest limitation of most dashcams is night performance. To fix this, manufacturers are upgrading to larger, high-sensitivity sensors (like the latest Sony Starvis series). But a big sensor needs a big lens.
The JSD3122 features a massive 1/2" Image Circle. Unlike standard lenses that crop the image or create dark corners (vignetting) on large sensors, this lens covers the entire area.

The Result: Superior low-light performance. By utilizing the full surface area of a 1/2" sensor, your system captures more light and less noise, making night driving footage clear and legally usable.

2. Forensic-Level Clarity (12MP Resolution)

In an accident investigation, the truth is in the details. A license plate number, a street sign, a driver’s facial expression—these require pixels.
The JSD3122 delivers 12MP Resolution. It is ready for 4K recording systems, ensuring that when you pause the video and zoom in, the image holds up. No more pixelated blobs; just crisp, sharp evidence.

3. Reality, Unbent (Distortion < -1.54%)

Most dashcams use ultra-wide fish-eye lenses to see the whole road, but they warp reality. Cars look further away than they really are, and straight roads look curved.
The JSD3122 uses a sophisticated optical design with <-1.54% Distortion.

Why it matters: It provides a 92° Field of View—wide enough to cover the driving lanes—but keeps the geometry linear. Distance judgment is accurate, and the video looks natural, which is critical for AI-based ADAS (Advanced Driver Assistance Systems) or legal review.

4. Balanced Optical Specs

F/2.2 Aperture: It strikes the perfect balance. It’s bright enough for night driving but provides enough Depth of Field to keep both the dashboard and the car in front in focus simultaneously.

EFL 3.94mm: At this focal length, objects appear at a natural distance, avoiding the "funhouse mirror" effect of wider lenses.

Compact Integration: With a standard M12 Thread and a TTL of 20.49mm, it fits easily into compact windshield-mounted units or discreet commercial monitoring hardware.

The Bottom Line

When safety and liability are on the line, the lens is the most critical component of the chain. The JSD3122 offers the high resolution, low distortion, and large sensor support that professional automotive systems demand.

Drive with confidence. Record with clarity. Choose the JSD3122.

Our official email address: info@jsdoptical.com