Description
1/2.5″ 8mm 5MP F2.0 M12 Low-Distortion Fixed Focal Lens
Achieve uncompromised optical precision with our high-resolution 1/2.5″ 5MP 8mm M12 low-distortion lens. Tailored for high-density 5-megapixel sensors, this lens features an advanced 6G+IRCF (6 All-Glass Elements + IR Cut Filter) optical design that eliminates thermal drift while maintaining sharp, edge-to-edge clarity. Offering a narrow 40° horizontal field of view and an incredibly low distortion rating of <-7.6%, it brings distant subjects into sharp focus without bending lines, making it the perfect choice for high-precision industrial vision, automated surveillance, and intelligent detail tracking.
Key Product Highlights
- 5MP Ultra-Sharp Resolution: Specifically designed to resolve ultra-fine optical details, extracting maximum image data and crisp definition from 5-megapixel CMOS sensors.
- Low-Distortion Telephoto View: Features an exceptionally low geometric distortion rating of <-7.6%, ensuring straight lines and precise proportions for exact algorithm tracking.
- Narrow 8mm Focal Length: The 50° diagonal (40° horizontal) field of view provides a significant optical telephoto effect, capturing clear face and text details at long distances.
- Premium 6G All-Glass Structure: Built entirely with 6 layers of professional-grade optical glass, guaranteeing excellent light transmission and maximum stability in harsh thermal environments.
- Built-in IR Cut Filter (IRCF): The integrated IRCF precisely blocks infrared light during the day to prevent color wash, rendering bright, vivid, and accurate colors.
Technical Specifications
| Parameter | Specification |
|---|---|
| Image Format | 1/2.5″ |
| Focal Length | 8 mm |
| Field of View (F.O.V.) | 50°(D) / 40°(H) / 30°(V) |
| Resolution | 5 MegaPixel (5 MP) |
| Distortion | < -7.6% |
| Aperture (F/#) | F2.0 |
| Mount | M12 x 0.5 |
| Iris Type | Fixed |
| Minimum Object Distance (M.O.D.) | 0.3 m |
| Back Focal Length (B.F.L.) | 7.2 mm |
| Optical Structure | 6G + IRCF (6 All-Glass Elements + Infrared Cut Filter) |
This product is certified by RoHS and ISO9001 quality management system, supports third-party testing, and complies with EU and domestic security equipment access standards, ensuring reliable quality and full compliance.
Applications & Device Compatibility
Core Application Scenarios
This 5MP 8mm M12 lens is meticulously crafted for specialized applications that demand narrow-angle focus, distant tracking, and strict geometric layout retention. It is widely applied in Automatic Number Plate Recognition (ANPR) and smart traffic management, where capturing distant vehicle license plates with geometric accuracy is paramount. Thanks to its ultra-low <-7.6% distortion, it acts as a premier optical module for optical character recognition (OCR) scanners, high-speed parcel barcode sorting lines, and industrial automated inspections. Additionally, it delivers exceptional performance in long-range facial recognition terminals at factory entry gates, bank ATM kiosks, and high-security perimeter check-points.
Compatible Device List
- Sensors: Natively optimized for high-resolution 1/2.5″ CMOS image sensors (e.g., Sony IMX335) and fully backward compatible with 1/2.7″, 1/2.8″, and 1/3″ sensors.
- Traffic & Security Systems: Seamlessly integrates into ANPR capture cameras, smart highway monitoring setups, and professional high-definition dome/bullet IP cameras.
- Industrial Vision & AI: Highly suited for industrial USB/MIPI smart camera systems, automated sorting machinery, and embedded frameworks like Jetson Nano or Raspberry Pi systems.
- Biometric Access Hardware: Fits long-range face scanning modules, premium visitor verification pillars, and high-accuracy authentication terminals.
“Designed for long-range detail tracking and low-distortion machine vision applications.”
Frequently Asked Questions
- Q: What are the main benefits of an 8mm lens over a 2.8mm wide-angle lens?
- A: An 8mm lens provides a narrower field of view (40° H), creating a powerful optical magnification effect. It allows the camera to capture distant subjects—such as license plates, text labels, or human faces—with far more pixels and clarity than a wide-angle lens can achieve.
- Q: Why is the <-7.6% distortion rating important?
- A: Telephoto and mid-range lenses require strict geometric accuracy. A distortion rating of less than 7.6% means straight lines remain straight on the sensor, which is critical for machine vision measurement, barcode scanning, and text recognition software to analyze data without software correction.
- Q: Does the 6G all-glass structure help with outdoor deployment?
- A: Absolutely. Unlike plastic lenses that warp or de-focus when exposed to summer heat or cold winter temperatures (thermal drift), the 6G all-glass design maintains an invariant, stable focal plane under extreme operational conditions.
- Q: Can this lens be used for night-vision surveillance?
- A: Yes. The F2.0 aperture delivers robust light throughput. When your camera module pairs it with an external infrared (IR) light source, the lens provides crisp, low-noise nighttime imagery.
- Q: How do I adjust the focus for my installation distance?
- A: This is a manual focus fixed lens. During product integration, you manually thread the M12 lens into your board holder until the real-time image feed reaches optimal sharpness at your target distance, then secure it using a locking nut or thread adhesive.
