M12 2.5mm Fisheye Lens
The M12 2.5mm Fisheye Lens (Model PL-WA02524B-M12) is an ultra-wide board optic engineered for compact imaging systems requiring exceptional coverage. Designed for the 1/2.7-inch OV2710 sensor, it delivers a 168.8° diagonal, 142.6° horizontal, and 75.3° vertical field of view. Featuring a 5G+IR optical stack, an F2.4 fixed aperture, and an M12 P0.5 thread, it provides natural color reproduction and thermal stability. Ideal for dashcams, security cameras, automotive surround view, and machine vision applications.
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Product Description
M12 2.5mm Fisheye Lens
PL-WA02524B-M12 from Shanghai SILK Optical Technology is an ultra-wide board optic engineered for compact imaging systems. Built around a 2.5mm effective focal length and a 168° field of view, it delivers exceptional coverage for dashcams, security, and machine vision.
PL-WA02524B-M12 Specification
The following table details the core technical parameters, optical characteristics, and mechanical dimensions.
| NO. | ITEM | CONTENT |
|---|---|---|
| 1 | TTL (Total Track Length) | 16.87 ± 0.3 mm |
| 2 | EFL (Effective Focal Length) | 2.5 ± 5% mm |
| 3 | F/NO (Aperture) | 2.4 ± 5% |
| 4 | BFL (Back Focal Length) | 4.6 mm |
| 5 | CONSTRUCTION | 5G + IR |
| 6 | MAX IMAGE CIRCLE | Φ 7.0 mm |
| 7 | For Sensor | 1/2.7" OV2710 |
| 8 | Field of View (Diagonal) | 168.8° |
| 9 | Field of View (Horizontal) | 142.6° |
| 10 | Field of View (Vertical) | 75.3° |
| 11 | TV Distortion | -28.3% |
| 12 | Relative Illumination | 45.0% |
| 13 | CRA (Chief Ray Angle) | < 20.9° |
| 14 | Mount (Interface) | M12*P0.5 |
Mechanical Drawings
Performance Advantages
Broad Coverage with Fewer Cameras
One wide optic can replace multiple narrow-angle cameras in room monitoring, vehicle cabin viewing, and shelf inspection, reducing BOM cost, cabling, and installation time.
Compact & Lightweight
At 16.87mm total length, it supports slim camera modules. Low mass reduces stress on the lens holder and helps maintain focus after vibration.
Natural Color in Daylight
The integrated IR cut filter reduces infrared contamination that can otherwise wash out foliage, fabrics, and skin tones in security or dashcam footage.
Thermal & Batch Consistency
Five glass elements resist thermal drift better than plastic. Combined with tight TTL and EFL tolerances, it ensures repeatable focus across production runs.
Application Areas
| Industry | Application Details |
|---|---|
| Automotive & Dashcams | Driver/cabin monitoring, recording adjacent lanes, and roadside details. Compact TTL fits mirror and dome modules. |
| Security & Surveillance | Corner-mounted room coverage, corridor monitoring. Dewarping software presents a normal perspective. |
| Action Cams & Drones | Captures wide scenes with a small optical block, keeping faces and signs larger than extreme fisheyes. |
| Machine Vision | Conveyor monitoring, bin picking, PCB presence checks. Supports calibration and dewarping for repeatable geometry. |
| Smart Home & IoT | Doorbells, baby monitors, smart lighting. Standard M12 format fits battery-powered embedded devices. |
ShangHai SILK Optical Technology CO., LTD supports OEM and ODM projects with flexible volume planning, sample evaluation, and production consistency. For inquiries, please contact our engineering team.
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