The invention relates to an electronic rearview mirror with a display function. The electronic rearview mirror comprises a display and an electric control reflecting mirror arranged on the front side of the display, the electric control reflecting mirror comprises a mirror surface layer and a liquid crystal light control piece arranged on the front side of the mirror surface layer; the mirror surface layer is a semi-transparent reflecting film and is a multi-layer optical film formed by overlapping a plurality of layers of optical dielectric films with high and low refractive indexes; the liquid crystal light control piece comprises a liquid crystal box and a first polaroid arranged on the front side of the liquid crystal box, and the first polaroid is provided with a first polarization axis; the liquid crystal box is a vertical alignment liquid crystal box, the optical path difference of a liquid crystal layer is at least lambda/4, and the liquid crystal layer is provided with an orientation axis forming a first half right angle with the first polarization axis; according to the electronic rearview mirror, all parts of the electronic control reflecting mirror can have consistent and high reflectivity and transmittance, uneven brightness of a displayed picture can be avoided, the visual angle characteristic of the electronic rearview mirror can be effectively improved, the manufacturing cost is lower, and the electronic rearview mirror can be widely applied to the field of electronic rearview mirrors. Popularization and application are easy.
本发明涉及一种带有显示功能的电子后视镜,包括显示器和设在显示器前侧的电控反射镜;电控反射镜包括镜面层和设在镜面层前侧的液晶控光件;镜面层为半透反射膜,其是由多层高低折射率的光学介质膜重叠构成的多层光学膜;液晶控光件包括液晶盒和设在液晶盒前侧的第一偏光片,第一偏光片具有第一偏光轴;液晶盒采用垂直配向液晶盒,其液晶层的光程差至少为λ/4,其液晶层具有与第一偏光轴呈第一半直角的定向轴;液晶盒上设有第一光学膜,第一光学膜为具有垂直快轴的补偿膜这种电子后视镜不仅能够使电控反射镜各处具有一致且较高的反射率及透过率,可避免显示画面的明暗不均,而且可有效改善电子后视镜的视角特性,并且造价更低,易于普及应用。
Electronic rearview mirror with display function
一种带有显示功能的电子后视镜
2024-04-05
Patent
Electronic Resource
Chinese
IPC: | G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G09F DISPLAYING , Anzeigewesen |
European Patent Office | 2022
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