The electronic exterior rearview mirror, as a landmark feature of the intelligent upgrade of automobiles, is gradually penetrating the mainstream market from high-end models. It replaces traditional optical lenses with a combination of a camera and a display screen, demonstrating unique advantages in terms of field of view expansion and environmental adaptability. However, there are also practical issues such as usage cost and adaptability. The following will conduct an inventory from three aspects: core advantages, existing limitations, and purchasing suggestions.
Core performance advantages
24/7 field of view guarantee: The lens is equipped with hydrophobic coating and automatic heating function, which can quickly melt ice and defog in an environment of minus 10 ℃; HDR algorithm is used at night to reduce high beam glare, and on rainy days, the clarity of the field of view is improved by about 40% compared to traditional rearview mirrors
Blind spot coverage optimization: The wide-angle camera can cover up to three times the field of view of traditional rearview mirrors. When reversing, it automatically switches to a close-up view of the wheels. Combined with blind spot monitoring visualization function, the risk of lane changing accidents is reduced by about 27% (industry test data)
Intelligent expansion potential: supports OTA remote upgrade, and can expand navigation screen casting, pedestrian warning and other functions in the future; When the rear seats are fully loaded, they are not obstructed by headrests and maintain a complete rear view
Existing usage limitations
❗ High adaptation cost: Experienced drivers need about 7 days of break in period to re-establish screen viewing habits, and improper screen position design in some car models may cause visual fatigue
❗ The maintenance cost is significant: the cost of repairing one side is about 15000 yuan, which is 20 times that of traditional rearview mirrors; Regular cleaning of the camera is required, and high-pressure water guns are prohibited from spraying directly into the lens area during car washing
❗ Challenges under extreme conditions: there is still a 13% probability that residual water droplets will affect imaging in rainstorm environment, and the start delay at low temperature below -20 ℃ may exceed 15 seconds