The led portable lights factory is to use a high-precision scanning mirror made based on MEMS technology (Micro-Electro-Mechanical System) to periodically reflect the laser light path at different angles, forming a projection surface much higher than the human eye Fast refreshing image of response rate. Its pixel magnitude can also be close to DLP.

These factors limit the use of this solution in smart headlights with high pixel requirements. 02 Analysis of light source technology route (1) LED matrix Based on the small size, easy drive, fast response and other characteristics of LEDs, using multiple LEDs to form rows, columns or matrix arrangements is the basic solution to realize entry-level multi-pixel smart headlights. In addition, they need to pass strict vehicle-level verification. Figure 4 An example of DLP-style smart headlights (picture source:

BENZ and TI official website) (4)mu;AFS is the industry’s abbreviation for Addressable LED Pixel Array, which is a special LED technology developed for multi-pixel intelligent headlight system. In addition, because the power density is much higher than that of ordinary displays, the LED matrix backlight generates a lot of heat, so that the LCD panel cannot be directly placed on the backlight like an LCD display. 03 Summary and Prospects Remove the laser scanning headlights, which are not yet mature in technology. Compared with the DLP type headlight source system based on projection technology introduced below, the LCD type has the advantages of relatively low cost, relatively small volume, wide stretchable angle of the light type, and high contrast between light and dark. For example, as shown in Figure 8 below:

Figure 8 The organic combination of several technologies shows that the multi-pixel intelligent headlight system as the future development direction of automotive lighting has broad market prospects, abundant technical reserves, and unlimited innovation space. The advantage of laser + DMD is that thanks to the strong directionality of the laser, even if phosphor powder is needed to convert white light, the light exit hole of the optical machine can still be made very small

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