Posted on: May 16th, 2023
Heads-up display, also known as HUD projects images into your windshield avoiding taking your eyes off the road. It is a technology that you may find integrated on your vehicle. It gives you the same information you have on your dashboard and it main purpose is not to take your eyes off the road and keep you safe.
This type of technologie was initially intended for military aircrafts. However it is now commonplace for modern vehicles due to its capactity to provide such displays.
The projection unit in a typical HUD is an optical collimator setup: a convex lens or concave mirror with a cathode-ray tube, light emitting diode display, or liquid crystal display at its focus. This setup produces an image where the light is collimated, i.e. the focal point is perceived to be at infinity.
The combiner is typically an angled flat piece of glass (a beam splitter) located directly in front of the viewer, that redirects the projected image from projector in such a way as to see the field of view and the projected infinity image at the same time. Combiners may have special coatings that reflect the monochromatic light projected onto it from the projector unit while allowing all other wavelengths of light to pass through. In some optical layouts combiners may also have a curved surface to refocus the image from the projector.
The computer provides the interface between the HUD (i.e. the projection unit) and the systems/data to be displayed and generates the imagery and symbology to be displayed by the projection unit.
Warning!
In case you have a broken windshield with this technologie, make sure to let the professionals know you have a HUD Windshield so that they can replace it with the right part or else, It will not work properly
