1. Guarantee Accurate Algorithm Recognition (Core Value)
Vehicle vision relies on pixel coordinate calculation by chips. Barrel distortion, pincushion distortion and radial distortion will geometrically stretch, squeeze and warp real objects in the frame.
- For ADAS front-view lens: distorted lane lines, traffic signs, pedestrians lead to wrong distance calculation, causing ACC braking error, LKA lane departure deviation and AEB false trigger or missing trigger;
- For BSD blind spot lens: distorted rear vehicles result in false lane-change warning or no alarm, directly bringing driving safety hazard
Low/zero distortion ensures object proportion is consistent with real world, so the perception algorithm can judge distance, size and position correctly
2. Avoid Splicing Deformation for AVM 360° Surround View System
AVM panoramic parking system stitches 4–6 fisheye images into a bird’s-eye top-down view.
- High distortion lenses cause obvious overlapping seams, ground surface twisting, curbs and parking lines bending severely;
- Low-distortion design realizes seamless splicing, straight parking grid lines, accurate obstacle outline display, helping drivers judge distance to walls, pillars and curbs correctly and avoid scratching.
This is the most intuitive user experience requirement for mass-produced passenger cars.
3. Improve DMS/OMS Recognition Accuracy Inside Cabin
For driver monitoring: distorted facial features, eyes and mouth contour lead to inaccurate judgment of eye closure, yawning and head deflection;
For OMS rear cabin monitoring: distorted child body shape may cause missed left-behind detection.
Low distortion restores real facial and human body outline, greatly lifting the recognition rate of AI algorithms.
4. Reduce Post-Correction Computing Pressure for ISP Chip
Serious distortion requires heavy software algorithm correction on the host chip, which occupies large computing resources, increases power consumption and heat generation, and may cause frame rate drop or image delay.
Hardware-level low-distortion optical design minimizes digital correction workload, makes the camera module run more efficiently and stably, especially critical for low-power cockpit domain controllers.
5. Meet Host Factory & Tier 1 Standard Access Requirements
Major OEMs and first-tier suppliers have clear distortion index thresholds for each camera position:
- ADAS front lens: usually distortion＜1% (near zero distortion);
- AVM fisheye lens: controlled below 5% ultra-low distortion;
- Excessive distortion cannot pass formal project review and sample bench test, directly blocking project access.
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6. Consistent Imaging Consistency in Mass Production
Well-designed low-distortion optical structure ensures batch-to-batch parameter uniformity. Customers do not need to repeatedly adjust distortion correction parameters for different batches of lenses, saving massive algorithm debugging labor costs.
