Head-up display device for motor vehicles
First Claim
1. An optical device on a motor vehicle, which has a windshield (24), for reflecting data in the form of displays, which are generated by display elements by means of a luminous flux in a well (2) in the area of the instrument panel and are projected into the field of vision of a driver of the vehicle via an optical device through an outlet opening of the well onto the windshield and are reflected in this area by foils or plates, the luminous flux (6) being deflected towards the driver at the plane of separation between air and foil or air and plate, comprisinga first slatted shutter (8) having horizontally extending reflectors (13) layered above one another, said first slatted shutter being disposed in the area of the inside of the windshield (24), and reflecting a portion of the luminous flux toward the driver,the remaining portion of th luminous flux (6) being absorbed by the reflectors (13).
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Accused Products
Abstract
Head-up displays on motor vehicles often have double images and interfering reflections on the windshield. To avoid these, arrangements of linear polarization filters or shutter foils are suggested, which have particularly high light transmission. Arrangements of filter plates on a combiner inside of the windshield are also advantageous.
46 Citations
9 Claims
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1. An optical device on a motor vehicle, which has a windshield (24), for reflecting data in the form of displays, which are generated by display elements by means of a luminous flux in a well (2) in the area of the instrument panel and are projected into the field of vision of a driver of the vehicle via an optical device through an outlet opening of the well onto the windshield and are reflected in this area by foils or plates, the luminous flux (6) being deflected towards the driver at the plane of separation between air and foil or air and plate, comprising
a first slatted shutter (8) having horizontally extending reflectors (13) layered above one another, said first slatted shutter being disposed in the area of the inside of the windshield (24), and reflecting a portion of the luminous flux toward the driver, the remaining portion of th luminous flux (6) being absorbed by the reflectors (13).
Specification