Low Distortion Lens – M42183028M4K

M42183028M4K is Manual iris Low-distortion M42 mount lens with Φ30 size, 18mm 78.5°, 100lp/mm resolution, F2.8 – 22 aperture, M72x0.75 filter screw.

18mm M42 100lp/mm Low Distortion Machine Vision Lens

This 18mm M42 low distortion machine vision lens is designed for industrial inspection and precision imaging applications requiring high resolving power and controlled distortion. With 100 lp/mm resolution, less than 1.1% distortion, manual iris and focus, and a 78.5° diagonal FOV, it provides flexible optical control for demanding factory automation and inspection systems.

The combination of high resolution and a defined working-distance-to-magnification relationship makes this lens suitable for engineers who need predictable optical performance during industrial inspection system design. The Lens Selection Guide can be used alongside these parameters when determining the appropriate focal length and imaging configuration.

Product Core Highlights

• 100 lp/mm Resolution: Provides high resolving power for detailed industrial inspection.
• Low Distortion: Less than 1.1% distortion helps maintain accurate image geometry.
• 18mm Fixed Focal Length: Provides a stable optical configuration for repeatable inspection systems.
• Manual F2.8–22 Iris: Allows optical performance and depth of field to be adjusted according to lighting and inspection conditions.
• Defined Magnification Range: Supports predictable imaging from 250mm to 800mm working distances.

18mm M42 Low Distortion Lens Applications

Core Application Scenes

This 18mm low distortion machine vision lens is designed for factory automation systems where image detail, geometric consistency, and optical adjustment are important. Its 100 lp/mm resolving capability makes it suitable for inspecting relatively fine structures, edges, surfaces, and component features where standard surveillance optics may not provide sufficient optical detail.

The lens is particularly appropriate for FA inspection stations and precision industrial imaging equipment. Its manual focus and F2.8–22 iris give system integrators direct control over focus position, light transmission, and depth of field during machine setup. This is useful when inspection targets vary in surface reflectivity or when different production lines require optical adjustment.

The 78.5° diagonal field of view provides relatively broad image coverage for an 18mm focal length, while the specified distortion below 1.1% helps maintain image geometry. This combination can be valuable in inspection applications where the camera must capture a larger component area while still retaining controlled optical distortion.

The defined working-distance and magnification data also make the lens practical for system design. At a 250mm working distance, the approximate magnification is 0.066×, while at 800mm it decreases to approximately 0.022×. This gives engineers a useful reference when determining camera placement and target coverage.

For applications requiring precise relationships between focal length, sensor dimensions, and working distance, TOWIN’s Focal Length Calculator can assist during the initial optical selection process.

Compatible Device List

• FA Inspection Cameras: Suitable for factory automation cameras used for component inspection, dimensional checking, and production-line monitoring.
• Industrial Inspection Systems: The 100 lp/mm resolution supports detailed imaging of mechanical parts, electronic components, and manufactured surfaces.
• Precision Camera Modules: Manual focus and iris adjustment allow optical parameters to be tuned during system installation and calibration.
• Automated Production Lines: The defined magnification and working-distance relationship supports repeatable camera positioning across inspection stations.
• OEM Machine Vision Equipment: The M42 interface with adapter provides a flexible mechanical configuration for customized industrial imaging systems.
• Inspection Systems with Filter Requirements: The M72 × 0.75 filter thread allows integration of compatible optical filters where application-specific light management is required.

For broader factory automation and inspection requirements, TOWIN’s Machine Vision solutions provide additional information about optical configurations for automated visual inspection.

Designed for precision FA inspection, industrial machine vision, and high-resolution factory automation applications.

Frequently Asked Questions

Q: What is the resolution of this 18mm machine vision lens?
A: The lens is specified at 100 lp/mm, providing high resolving power for detailed industrial inspection and machine vision applications.

Q: What sensor or image format is this lens designed for?
A: The specified image format is Φ30. System integrators should verify the active sensor dimensions and required image circle before final camera selection.

Q: Is this an M42 lens?
A: Yes. The specified mount is M42 with an adapter, allowing integration with compatible industrial camera configurations.

Q: Is this lens a low distortion lens?
A: Yes. The specified distortion is below 1.1%, making it suitable for applications where controlled image geometry is important.

Q: Is this lens suitable for FA and machine vision applications?
A: Yes. Its 100 lp/mm resolution, low distortion, manual optical adjustment, and defined working-distance-to-magnification characteristics make it well suited to factory automation and industrial inspection systems.

Q: Is the 18mm lens a zoom lens?
A: No. The focal length is fixed at 18mm. The F2.8–22 specification refers to the adjustable aperture range, not focal length or zoom capability.

Q: What is the minimum object distance of this industrial lens?
A: The specified M.O.D. is 150mm, supporting relatively close-range industrial imaging applications.

Q: What is the working distance and magnification range?
A: The provided optical data covers approximately 250mm to 800mm working distances, with magnification ranging from approximately 0.066× to 0.022×.

Q: Can the manual iris and focus be adjusted during machine setup?
A: Yes. The manual iris provides an F2.8–22 adjustment range, while manual focus allows the optical system to be configured for the required working distance.

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