The invention relates to a vehicle-mounted projection system and a vehicle. The system comprises a light source, a first lens, a projection sheet and an imaging lens group which are sequentially arranged along a first direction and are arranged on the same optical axis, the first lens is constructed as a revolving body, and the first lens is provided with an opening and a cavity communicated with the opening; the light source faces the opening; the inner wall surface of the cavity of the first lens is a light-in surface, the circumferential surface of the first lens is a reflecting surface, and the surface part of one side, deviating from the cavity, of the first lens is a light-out surface; the light-in surface and the light-out surface are refracting surfaces; when a light beam emitted by the light source is refracted to the projection sheet through the light incident surface, the reflecting surface and the light emergent surface and reaches an entrance pupil position of the imaging lens group, an imaging area of the light beam coincides with an entrance pupil area; the first direction is parallel to the optical axis of the first lens. The light beam energy utilization rate can be increased, and the brightness and definition of the projection pattern are improved.
本申请涉及一种车载投影系统及车辆,该系统包括:沿第一方向依次排布且同光轴设置的光源、第一透镜、投影片和成像透镜组;第一透镜构造为回转体,且第一透镜具有开口和与开口贯通的空腔;光源朝开口设置;第一透镜的空腔的内壁面为入光面,第一透镜的周向表面为反射面,第一透镜背离空腔的一侧表面部分为出光面;入光面和出光面均为折射面;其中,光源发出光束经入光面、反射面和出光面折射至投影片,并到达成像透镜组的入瞳位置时,光束的成像区域与入瞳区域重合;第一方向与第一透镜的光轴平行。本申请能够增加光束能量利用率,提高投影图案的亮度和清晰度。
Vehicle-mounted projection system and vehicle
一种车载投影系统及车辆
2024-10-15
Patent
Electronic Resource
Chinese
IPC: | G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS |
European Patent Office | 2024
|Vehicle-mounted projection lens, vehicle-mounted visual auxiliary system and vehicle
European Patent Office | 2024
|