3919 Series 8MP AA Structure Dashcam Car DVR Lens
AA structure definition
AA is the abbreviation of Active Alignment, and the Chinese translation is active alignment. In automotive lenses, AA structure refers to a technology that uses precision machinery and algorithms to accurately align the lens and image sensor (CMOS) to achieve the best imaging effect.
Reasons for needing AA structure
Improve imaging quality: The AA structure can ensure that the optical axes of the lens and sensor are strictly aligned, reducing image distortion, chromatic aberration and other problems, and improving image clarity and sharpness.
Ensure product consistency: For mass-produced automotive lenses, the AA structure can ensure consistent optical performance of each product and reduce yield problems.
Adapt to harsh environments: The vehicle environment is complex, with large temperature changes and frequent vibrations. The AA structure can improve the stability of the lens module and ensure good imaging effects in harsh environments.
Advantages of AA structure
High precision: The AA structure can achieve micron-level alignment accuracy and ensure imaging quality.
Automation: The AA process is highly automated, improving production efficiency and reducing labor costs.
Repeatability: The AA structure ensures batch-to-batch consistency of the product.
Adaptable: AA structure can adapt to different types of lenses and sensors.
Application of AA structure in automotive lenses
ADAS system: The ADAS system has high requirements for camera imaging quality, and the AA structure can ensure that the ADAS system accurately identifies the road environment and obstacles.
Surround view system: The surround view system requires the cooperation of multiple cameras. The AA structure can ensure that each camera has consistent imaging and stitches together a seamless surround view image.
Driver monitoring system: The driver monitoring system needs to accurately identify the driver's facial expressions and movements, and the AA structure can improve the accuracy of facial recognition.
| 1.Model：OKS-3919-AA-650 |
| 2.Optical Specifications |
| NO. | Items | Description |
| 1 | Focal-Length | 2.4mm±0.5mm |
| 2 | F/No. | F2.0±5% |
| 3 | OpticalBack Focal Length | 3.48mm±0.2 |
| 4 | Mechanical Back Focal Length | 1.82mm±0.2 |
| 5 | MAX Image Circle | θ5.4 |
| 6 | Lens Structure | 4G+IR |
| 7 | Mount Type | M12*0.5 |
| 8 | FOV | Sensor | H | V | D |
| 1/4" | 91° | 66° | 121° |
| 9 | IR Filter | 650nm |
| 10 | TTL | 14.87MM |
| 11 | Waterproof Level | IP68 |
| 12 | Working Temperature | -40℃~+85℃ |
