Vehicle rearview assembly including a high intensity display

Details Vehicle rearview assembly including a high intensity display Vehicle rearview assembly including a high intensity display

G - Physics

02

F

G02F 1/01 (2006.01)

Patent

CA 2644710

An inventive rearview assembly (10) for a vehicle may comprise a mirror element (30) and a display including a light management subassembly (101b). The subassembly may comprise an LCD placed behind a transflective layer of the mirror element. Despite a low transmittance through the transflective layer, the inventive display is capable of generating a viewable display image having an intensity of at least 250 cd/m2 and up to 3500 cd/m2. The display includes a novel backlighting subassembly (116) and novel optical components including a magnifying system (119), a depolarizer (121), a reflector (115), and a reflective polarizer (103b). The display may be configured to display an image having edges contoured to correspond to the edges of the mirror element.

L'invention concerne un ensemble rétroviseur (10) d'un véhicule comprenant un élément miroir (30) et un afficheur comportant un sous-ensemble de gestion de lumière (101b). Ce sous-ensemble peut comporter un écran à cristaux liquides placé derrière une couche transflective de l'élément miroir. Malgré un faible coefficient de transmission à travers la couche transflective, l'afficheur selon l'invention est apte à générer une image visualisable d'une intensité minimale de 250 cd/m2 et maximale de 3500 cd/m2. L'écran comprend un nouveau sous-ensemble de rétroéclairage (116) et de nouveaux composants optiques comprenant un système d'agrandissement (119), un dispositif de dépolarisation (121), un réflecteur (115) et un dispositif de polarisation réfléchissant (103b). L'écran peut être conçu pour afficher une image dont les contours correspondent à ceux de l'élément miroir.

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