Description
Optimize your infrared imaging system with our premium 2MP 5.5mm M12 fixed focal lens. Specifically engineered for 1/2.7″ format sensors, this high-performance IR corrected lens integrates a specialized 850nm narrow pass filter (blocking visible light while allowing 850±10nm IR light) to eliminate ambient glare. With a mathematically optimized 1% low distortion profile and a short 10.62mm TTL, it delivers sharp, geometrically accurate 2 Megapixel images under dedicated infrared illumination. It is the definitive choice for developers engineering next-generation automotive lens systems (such as DMS/OMS) and specialized machine vision hardware.
Product Highlights
- Specialized 850nm Narrow Bandpass Filter: Pre-configured with an IR cut but 850±10nm pass filter, capturing high-contrast infrared images while filtering out baseline visual light noise and daytime glare.
- Ultra-Low 1% Geometric Distortion: Keeps optical distortion capped at 1%, ensuring straight lines and proportions remain geometrically uniform, which is critical for facial feature tracking and coordinate-based algorithms.
- High Relative Illumination (R.I. 70%): Guarantees uniform brightness across the entire sensor frame from center to edge, effectively eliminating corner vignetting and dark-angle data loss.
- Compact 10.62mm TTL Architecture: Features an ultra-short Total Track Length that easily fits within tight space constraints, satisfying strict enclosure limitations for vehicle dashboards and compact industrial modules.
Technical Specifications
| Parameter | Specification |
|---|---|
| Image Format | 1/2.7″ |
| Focal Length | 5.5mm |
| F.O.V. (Field of View) | 68°(D) / 55°(H) / 48°(V) |
| Resolution | 2 Megapixel (2 MP) |
| Optical Distortion | 1% (Low Distortion) |
| Aperture | F2.8 |
| Mount Type | M12 x 0.5 (Board Lens) |
| Iris | Fixed |
| Focus Mode | Manual |
| Zoom Mode | Fixed |
| Relative Illumination (R.I.) | 70% |
| B.F.L. (Back Focal Length) | 0.8mm |
| T.T.L. (Total Track Length) | 10.62mm |
| Lens Component Layout | 4P + IR cut but 850±10nm pass filter (4 Plastic Elements) |
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.
Target Applications & Device Compatibility
Core Application Scenarios
This 850nm IR pass M12 lens is purpose-built for active infrared illumination environments where visible light needs to be entirely isolated. It serves as a core optical component for automotive Driver Monitoring Systems (DMS) and Occupant Monitoring Systems (OMS), tracking driver fatigue, gaze direction, and cabin occupancy with 850nm LED/Laser strobes regardless of changing external sunlight. Furthermore, its narrow 55° horizontal field of view and ultra-low 1% distortion make it highly effective for indoor biometric iris scanners, high-accuracy facial recognition access control, laser-guided machine vision sorting, and specialized industrial FA lens inspection lines running under monochromatic 850nm lighting.
Compatible Device List
- Sensors & Core Modules: Fully optimized for 1/2.7″, 1/2.8″, and 1/3″ 1080p CMOS sensors (including specialized NIR-enhanced global shutter or rolling shutter chips).
- Automotive Safety Kits: Integrates smoothly into steering column camera pods, driver-facing mirror housings, and active fleet management monitoring boxes.
- Industrial Automation Systems: Fits compact smart cameras, 850nm structured-light 3D scanners, and micro-sized automated sorting hardware.
- Customization Options: Supports custom adjustments for alternative IR band passbands (e.g., 940nm filter integration), modified mechanical barrels, or custom anti-reflection coatings.
Designed for automotive DMS and active infrared machine vision applications.
Frequently Asked Questions
Q: Can this lens be used for regular daytime color surveillance?
A: No, this lens cannot capture true color. It features a built-in 850nm narrow pass filter that blocks visible daylight and only allows infrared light centered around 850nm to pass through. The resulting image will be a monochrome (black and white) infrared stream, which is ideal for computer vision but not for standard color video.
Q: Why is a 1% low distortion rating important for driver monitoring (DMS)?
A: DMS algorithms rely heavily on mapping precise vector distances between facial features (such as eyes, nose, and mouth). Standard wide lenses cause geometric warping at the edges, which tricks software. A 1% distortion ensures geometric accuracy, significantly increasing the reliability of fatigue and gaze tracking software.
Q: How does the Manual Focus feature work on this M12 board lens?
A: Since it is a standard thread design, manual focus is achieved by threading the lens into or out of its matching mount holder until the image reaches peak clarity on your monitor. Once focused, it is secured in place using a standard M12 locking ring or set screw.
Q: Will the 0.8mm short Back Focal Length (BFL) fit all camera sensors?
A: A BFL of 0.8mm means the rear glass element sits extremely close to the sensor glass cover. It is designed for compact embedded architectures, but you must verify that your sensor housing or IR-cut switcher mechanism does not have physical protrusions that block the lens from seating fully.
Q: Is the 4P plastic element layout durable enough for harsh automotive environments?
A: Yes. The precision plastic elements used in this automotive lens configuration are engineered with modern optical polymers that withstand extreme cabin temperature fluctuations without shifting focal points or losing structural clarity.
Q: Do you offer bulk customization for 940nm infrared specifications instead?
A: Absolutely. As an ISO9001 certified manufacturer, we offer flexible OEM/ODM options. We can swap the 850nm pass layer for a 940nm bandpass filter during production to fit your specific active lighting setups for bulk orders.
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