In the realm of industrial automation, robotics, and surveillance, 4mm M12 Lenses Specifications stand as a cornerstone of precision imaging. These compact, high-performance lenses, engineered with a 12mm threaded mount (M12), deliver exceptional clarity and versatility across diverse applications. From machine vision systems to CCTV cameras, their technical specifications ensure reliable performance in demanding environments.

4mm M12 Lenses Specifications: Core Technical Parameters

1. Focal Length & Aperture

• Focal Length: Fixed at 4mm, these lenses provide a balanced field of view (FOV) for mid-range imaging. For instance, a 4mm lens paired with a 1/3″ sensor achieves a horizontal FOV of 71.1°, ideal for capturing detailed scenes without excessive distortion.
• Aperture (f/#): Ranging from f/1.2 to f/4.0, the aperture controls light intake. A lower f-number (e.g., f/1.2) excels in low-light conditions, while higher f-numbers (e.g., f/4.0) enhance depth of field for sharper focus across varying distances.

2. Optical Performance

• Resolution: Designed for up to 5-megapixel sensors, these lenses resolve fine details with minimal aberration. High-resolution glass elements and multi-layer coatings (e.g., λ/4 MgF₂ @ 550nm) reduce chromatic aberration and enhance contrast.
• Distortion: Typical distortion ranges from -25% to -30% at full field, which may require software correction in precision applications like metrology.

3. Physical & Mechanical Design

• Mount Type: S-mount (M12 x 0.5 threading) ensures compatibility with board-level cameras. Adapters are available for C-mount integration.
• Weight & Dimensions: Weighing 6g to 33g, these lenses are ultra-compact, with diameters under 14mm, making them suitable for space-constrained installations.
• Working Distance: Optimized for 150mm to ∞, they accommodate both close-up inspections and long-range surveillance.

4. Environmental Resilience

• Temperature Range: Operate efficiently from -20°C to 85°C, withstanding industrial thermal fluctuations.
• Certifications: Compliance with RoHS, CE, and ISO 9001 ensures adherence to global safety and quality standards.

M12 CCTV lens 3-Megapixel IR corrected

Applications of 4mm M12 Lenses Specifications

1. Industrial Automation

Used in robotic vision systems for part inspection, assembly verification, and quality control. The 4mm focal length balances FOV and magnification, critical for detecting defects in manufacturing lines.

2. Surveillance & Security

CCTV cameras leverage 4mm M12 Lenses Specifications for wide-angle coverage in indoor and outdoor environments.

3. Medical Imaging

In endoscopy and microscopic devices, these lenses provide clear visualization of biological tissues. Their compact size aligns with the miniaturization trends in medical equipment.

4. Automotive Systems

Integrated into advanced driver-assistance systems (ADAS) for lane detection and obstacle recognition. The ruggedized designs resist vibration and shock, ensuring reliability in moving vehicles.

FAQs

1. What is the difference between f/1.2 and f/4.0 apertures in 4mm M12 Lenses?

A lower f-number (f/1.2) allows more light to reach the sensor, improving performance in dimly lit settings. However, it may have a shallower depth of field. An f/4.0 aperture offers broader focus range but requires brighter ambient light.

2. Can 4mm M12 Lenses be used with any sensor size?

No. The lens’s image circle must cover the sensor diagonal to avoid vignetting. For example, a 4mm lens with a 6mm image circle is suitable for 1/3″ sensors (6mm diagonal) but may not fully illuminate larger sensors like 1/2″.

3. How do I correct distortion in 4mm M12 Lenses?

Software tools like OpenCV or manufacturer-provided calibration utilities can compensate for barrel distortion. Alternatively, opt for lenses with built-in aspherical elements to minimize aberrations.

4. What is the typical lifespan of a 4mm M12 Lens?

With proper handling, these lenses can last 5–10 years. Avoid physical impacts, extreme temperatures, and prolonged exposure to moisture to maximize longevity.

1.5mm F2.0 M12 Mount Automotive lens

Conclusion

The 4mm M12 Lenses Specifications exemplify the fusion of precision engineering and adaptability. Their technical robustness, coupled with compatibility across industries, makes them indispensable for professionals seeking reliable imaging solutions.