The embodiment of the invention provides a backlight assembly and a head-up display system. The backlight assembly is used for providing two different light paths. The backlight assembly comprises a light source used for emitting light; the birefringence part is located on one side of the light source and used for dividing light rays entering the birefringence part into first polarized light and second polarized light, and the vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light; the birefringence component comprises a first area and a second area, the first polarized light corresponds to the first area, the second polarized light corresponds to the second area, and at least parts of the first area and the second area are not overlapped in the light emitting direction; the first dimming component is located on the side, away from the light source, of the birefringence component; the first polarized light is transmitted along a first direction after being emitted by the first dimming component; the second polarized light propagates along a second direction, and the first direction intersects with the second direction.
本发明实施例提供了一种背光组件及抬头显示系统,用于使背光组件提供两个不同的光路。背光组件包括:光源,用于出射光线;双折射部件,位于光源的一侧,用于将入射至双折射部件的光线分成第一偏振光和第二偏振光,第一偏振光的振动方向与第二偏振光的振动方向垂直;双折射部件包括第一区域和第二区域,第一偏振光对应第一区域,第二偏振光对应第二区域,其中,第一区域和第二区域在光线的出射方向上至少部分不交叠;第一调光部件,位于双折射部件远离光源的一侧;第一偏振光经第一调光部件出射后沿第一方向传播;第二偏振光沿第二方向传播,第一方向与第二方向相交。
Backlight assembly and head-up display system
背光组件及抬头显示系统
2024-03-08
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... / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |