Optical display system having a Brewster's angle regulating film

Details Optical display system having a Brewster's angle regulating film Optical display system having a Brewster's angle regulating film

1997-11-19

1999-12-07

Spyrou, Cassandra

Optical: systems and elements

Polarization without modulation

Polarizarion by dichroism

359630, 345 7, G02B 530, G02B 2714

Patent

active

059993146

ABSTRACT:
A head-up display system of an automotive vehicle, comprising outboard-side and inboard-side glass plates constituting a front windshield glass. An intermediate film is disposed between the outboard-side and inboard-side glass plates to bond the glass plates. A polarization-direction changing layer is secured to the inboard surface of the outboard-side glass plate. A Brewster's angle regulating film is secured to the inboard surface of the inboard-side glass plate. The Brewster's angle regulating film has a refractive index different from that of the glass plates. A displaying device is provided to generate a display light of information. Additionally, a light-polarizing device is provided to polarize the display light into S-wave. The display light having S-wave is incident at about Brewster's angle of the Brewster's angle regulating film to the front windshield glass so as to pass through the polarization-direction changing layer and to be reflected at the outboard surface of the outboard-side glass plate toward the side of the displaying device.

REFERENCES:
patent: 4973132 (1990-11-01), McDonald et al.
patent: 4973139 (1990-11-01), Weinrauch et al.
patent: 5053755 (1991-10-01), Smith et al.
patent: 5212471 (1993-05-01), McDonald
patent: 5510913 (1996-04-01), Hashimoto et al.

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