With the increase of road vehicles in our country, A variety of driving safety problems occur frequently, many drivers because of personal driving habits, often look down at the mobile phone, answer the phone, some novice operation is not familiar with the look at the dashboard, the driving force of the application of HUD is driving security, In the process of driving, the driver does not need to turn his eyes to the dashboard or the central control. The information projected by HUD is mainly the driving status indicators of the car, such as the speed and fuel quantity displayed on the dashboards. Further, designers hope to achieve the goal of intelligent driving through HUD, giving it more functions, including navigation, text messages, phone calls, mail, etc., and even adding simple interactions, making the car a mobile terminal similar to a smartphone. 

  随着我国道路车辆增多，各种驾驶安全问题频发，许多驾驶人员由于个人驾驶习惯的问题，经常会低头看手机，接打电话，有些新手操作不熟悉低头看仪表盘，应用HUD的驱动力是驾驶的安全性，使得驾驶员在驾驶过程中无需将视线转移到仪表盘或者中控上，HUD所投影的信息主要是汽车的行驶状况指标，比如仪表盘上所显示的车速、油量等信息；进一步，设计人员希望通过HUD实现智能驾驶的目标，赋予其更多的功能，包括导航、短信、电话、邮件等，甚至加入简单的互动，让汽车成为类似智能手机的移动终端。