Truck LED rear tail light with reflectivity index

Truck LED rear tail light with reflectivity index

The rear view mirror has a reflectivity index. The higher the reflectivity, the sharper the image reflected from the surface of the card. The albedo is related to information about the reflective coating on the inner surface of the mirror. Reflective films for car rearview mirrors normally use silver and aluminum as data, and their albedo is 80%. High albedo will have adverse effects in some places, such as driving in front of the bus headlights at night, the reflection of the rearview mirror will make the driver dazzled and affect the driving.

Therefore, the LED rear taillights of trucks normally use prisms. Although the card surface is flat, its cross-sectional shape is prismatic. It utilizes the characteristics of prism surface albedo which is different from external reflectivity to meet the requirement of no glare. Use silver or aluminum external reflective film with an albedo of 80% during the day, and use the inner and outer surface glass with an albedo of only 4% at night. To do this, at night, it is only necessary to turn the mirror position slightly in the day position. Its electronic photodetector can actively distinguish the artificial light from the outside and the applied light source, and adjust the face-changing data in the mirror within a few seconds after the DC current changes, from colorless to colored to adjust the rearview mirror to deal with glare question.