Saint-gobain Vitrage

Manfred-Andreas Beeck

Gerd Sauer

Wilbert Windeln

Michael Hassiepen

Norbert Bartonitscheck

Armin Felske

Bernd Stoffregen

Detlev Rebenstorff

A holographic mirror is made by a process of continuous exposure. For this purpose, a photosensitive layer (10) is exposed strip by strip in a direction crosswise to that in which the layer is exposed by two interfering beams (6, 6'). Film (11) bearing photosensitive layer (10) is continuously moved in the longitudinal direction (F) at a speed that ensures sufficient exposure of the layer. The procedure makes it possible to produce holograms of any length in one direction.

Method for making a holographic mirror

A windshield (1) for motor vehicles provided with a reflecting arrangement (6) for making optical information or signals visible to the driver of the vehicle; said information or signals being made recognizable in the same field of view as is suitable for the observation of traffic and the road ahead by said driver. According to the invention, the reflecting arrangement (6) is a hologram with the characteristic of a mirror. The angle of reflection .alpha. of the holographic mirror is different from the angle of reflection .beta. of the surface of the glass upon which said hologram is mounted. As a result the rays R' reflected from the surface of the glass do not reach the eye (8) of the observer, whereas the rays R reflected from the holographic mirror do. In the case of a bent windshield, a hologram with the function of a flat mirror will be disposed on a carrier layer curved corresponding to the shape of the windshield so that even in the case of bent windshields, the reflected image of the optical signals or information is free of aberrations.

Windshield reflector for imaging signals into view of driver

Growing community of inventors

Gifhorn, Germany

Manfred-Andreas Beeck