Machine Vision 7.5mm Lens M42-P1, Φ30 Image Circle for 4K Line Scan Camera

Deliver superior optical uniformity, low distortion and stable repeatability for high-speed production-line machine-vision tasks, built for 4K 7 μm line-scan sensors across battery, PV, packaging, logistics and traffic-security scenarios.

Core Optical Performance Specifications

•7.5 mm short-focal wide-angle design: Provides enlarged horizontal field-of-view to cover wider workpiece at fixed working distance and improve single-scan inspection throughput.

•φ30 mm image circle: Matches 4K line-scan sensors with 7 μm pixel pitch. Uniform high MTF across full FOV; geometric distortion controlled below 0.1 % for industrial-grade accuracy.

• M42×1.0 mechanical mount: 12 mm flange focal distance, direct fit for mainstream compact 4K line-scan cameras. Locked aperture & focus structures ensure sub-micron repeatability and long-term imaging stability in continuous production.

•7 μm large pixel support: Better SNR under low-light and low-contrast conditions. Boost detection sensitivity for faint surface defects such as shallow scratches, micro-dents, as well as DPM direct-part-mark codes.

Typical Applications

I. High-Speed In-Line Line-Scan Inspection (Primary)

1. Printing & Packaging: Continuous roll-to-roll inspection for labels, flexible films, paper and cartons. Detects registration deviation, print missing, scratches, foreign particles and ink defects. Wide-angle design covers broad web width at medium working distance.

•2. Lithium-ion Battery Production: Inspects anode/cathode foils, separators and composite layers. Identifies scratches, coating loss, pinholes, wrinkles and contamination on electrodes; tears, folds and thickness variation on separators. Works with HDR imaging to maintain stable contrast even on highly reflective surfaces for high defect-detection rate.

•3. Photovoltaic Manufacturing: Visual quality check for silicon wafers, solar cells and tempered cover glass. Detects micro-cracks, edge chipping, grid-line defects and solder joint discontinuities. Compatible with continuous-motion capture for large-size PV substrates.

4. Textile & Non-woven Industry: Real-time inline defect detection for fabrics, non-wovens and polymer films. Finds holes, stains, yarn breakage and weaving faults to meet high-speed production requirements.

II. Large-Area Static Line-Scan Machine Vision

• 1. Panoramic inspection for large components: One-shot full-field imaging for die-cast parts, sheet-metal assemblies and large PCB carriers. Detects scratches, dents, pits and voids for long-working-distance fixed inspection stations.

• 2. High-reliability DPM & multi-QR decoding: Reads low-contrast laser-engraved / dot-matrix DPM codes on metal and composite surfaces. Good weak-signal response keeps high decoding accuracy with tilted, partially-occluded or closely-arranged codes.

• 3. Smart logistics & warehousing: Long-range wide-field barcode and label reading on high-speed conveyors. Reduces camera quantity and system integration work; avoids image stitching to lower overall project cost.

III. Special-Purpose & Custom Optical Systems

•1. Platform panoramic scanning: Used for rail-vehicle chassis, tunnel and bridge monitoring systems. Realizes continuous high-resolution horizontal scanning. M42 interface enables easy integration with line-scan cameras and motion-control units.

•2. Lab & custom optical development: Suitable for surface topography, thin-film texture and coating uniformity measurement. Flexible M42 mounting adapts to C-mount / F-mount and custom camera platforms, speeding-up prototype research and verification.

IV. Transportation & Security Imaging

•1. Front-end intelligent traffic perception: Applied for toll stations, city gateways and border checkpoints. Wide coverage together with fine details for license plate, vehicle feature and occupant analysis.

•2. Low-light confined-site monitoring: For tunnels, underground parking and utility corridors. 7 μm pixel delivers high sensitivity and low read-noise to maintain stable industrial-level image quality under dim environments. Designed for mission-critical tasks with >99.9 % reliability, different from consumer surveillance lenses.