1992-02-01

Development of Hologram Head-Up Display 920600

Instrument clusters used in automobiles play an important role as man-machine interface. A variety of information about the current driving situation is conveyed to the driver quickly and accurately.
A great interest has been taken in the high visibility and legibility of the head-up display (subsequently abbreviated as HUD). Originally developed as display used in aeronautical applications, we have tried to exploit ways to adapt this device for automotive use. We have succeeded to produce a new HUD system, which has the following design features;
  1. (1)
    High brightness and high contrast display device using a liquid crystal display (subsequently abbreviated as LCD) and a halogen lamp illumination.
  2. (2)
    Long focus display in two colors using holographic lens.
  3. (3)
    Automatic dimming control system using an illuminance sensor.
(see Fig. 1)

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