Low Distortion Lens – M6803912806618

M6803912806618 is High-resolution 20-Megapixel low distortion CCTV lens with 1/2.8″ image format, 78° diagonal F.O.V., F1.8 aperture, and M6.8×0.25 mount.

4mm M6.8 20MP Low Distortion Miniature Lens

This 4mm M6.8 miniature lens is a 20MP low distortion machine vision lens designed for compact high-resolution imaging systems. Featuring an F1.8 aperture, <1% TV distortion, 78° diagonal FOV, and a compact 4.84mm total optical length, it combines high optical resolution with a small mechanical footprint.

The lens is well suited to embedded cameras, compact machine vision modules, automated inspection equipment, and other applications where high pixel resolution and accurate image geometry are required in a limited installation space.

4mm M6.8 Low Distortion Lens Core Highlights

• 20MP high-resolution optical performance for demanding compact imaging systems
• <1% TV distortion supports accurate image geometry for inspection and measurement
• 4mm fixed focal length provides 78° diagonal FOV on a 1/2.8″ sensor
• F1.8 fixed aperture provides strong light-gathering capability for compact cameras
• M6.8 × 0.25 miniature mount with only 4.84mm TTL for space-constrained designs
• 0.1m M.O.D. supports close-range imaging applications

4mm M6.8 Low Distortion Lens Applications

Core Application Scenes

High-Resolution Machine Vision

With up to 20MP optical resolution and less than 1% TV distortion, this lens is designed for compact inspection systems that require high image detail without introducing significant geometric deformation. It can support component inspection, dimensional analysis, object detection, and visual positioning.

Compact Embedded Vision

The M6.8 × 0.25 mount and 4.84mm total optical length make this lens suitable for embedded camera modules where conventional industrial lenses may be too large. Its compact design allows optical integration into small inspection and sensing devices.

Precision Inspection Systems

Low distortion is particularly useful when the image is used for measurement or positional analysis. The <1% distortion specification helps maintain more consistent object geometry across the image field.

Robotic Vision Modules

The 4mm focal length and 78° diagonal FOV provide relatively broad scene coverage while maintaining high resolution. This combination can be useful for compact robotic cameras used for object localization, inspection, and automated handling.

Automated Imaging Equipment

The fixed focal length and fixed iris simplify optical integration into dedicated imaging equipment. The 20MP resolution provides sufficient image detail for applications requiring fine feature recognition.

Designed for compact high-resolution machine vision and automated inspection applications where optical resolution, low distortion, and minimal installation space are critical.

Compatible Device List

• 20MP industrial camera modules — Designed for high-resolution imaging on 1/2.8″ sensors.
• Compact machine vision cameras — 4mm focal length and 78° diagonal FOV provide broad scene coverage.
• Embedded inspection cameras — M6.8 mounting and 4.84mm TTL support space-constrained designs.
• Robotic vision modules — Suitable for object detection, positioning, and visual inspection.
• Automated optical inspection equipment — <1% distortion supports more consistent image geometry.
• Close-range inspection systems — 0.1m M.O.D. supports relatively short working distances.

When selecting a lens for a particular sensor and imaging area, TOWIN’s Sensor Guide can help with sensor compatibility, while the Lens Selection Guide provides additional guidance on matching lens specifications to an imaging application.

For a quick check of focal length and field of view, engineers can also use the FOV Calculator.

Frequently Asked Questions

Q: What is the focal length of this M6.8 lens?
A: The lens has a fixed 4mm focal length, making it suitable for compact imaging systems requiring a relatively broad field of view.

Q: What sensor format does this 4mm lens support?
A: The specified image format is 1/2.8″. The lens provides 78° diagonal, 66° horizontal, and 52° vertical FOV on this sensor format.

Q: What is the resolution of this lens?
A: The lens supports up to 20MP resolution, making it suitable for high-resolution machine vision and embedded imaging applications.

Q: How low is the distortion?
A: The specified TV distortion is below 1%. This makes the lens suitable for applications where maintaining accurate image geometry is important.

Q: Is this lens suitable for machine vision applications?
A: Yes. Its 20MP resolution, <1% distortion, F1.8 aperture, compact M6.8 mount, and 4mm focal length make it suitable for compact machine vision and automated inspection systems.

Q: Is this an M6 miniature lens?
A: Yes. The lens uses an M6.8 × 0.25 miniature mount and belongs to the small-mount miniature lens family. It is designed for applications where camera size and optical performance must be balanced.

Q: What is the minimum object distance?
A: The specified M.O.D. is 0.1m, or 100mm. This allows the lens to be used for relatively close-range inspection and imaging.

Q: Is this lens a fisheye lens?
A: No. Although its 78° diagonal FOV is relatively broad, the lens has less than 1% TV distortion. This optical characteristic is more consistent with a low-distortion wide-view miniature lens than a fisheye design.

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