Projection system

The invention provides a projection system. The projection system comprises a light source module and a projection module. The projection module is arranged on a light path of light rays emitted by the light source module, is used for reflecting the light rays and consists of an imaging lens, and the imaging lens is provided with at least one optical reflecting surface. According to the projection system, the imaging lens with at least one optical reflection surface is used for replacing a multi-lens structure in an existing projection system, the light control capability and aberration optimization capability of the projection system can be effectively improved, the resolution of the projection system is improved, and the size and the manufacturing cost of the system are reduced. 本申请提供了一种投影系统，其包括光源模块和投影模块。其中，投影模块设置在光源模块发出的光线的光路上，用于折转光线，其由一片成像透镜组成，并且该成像透镜具有至少一个光学反射面。本申请的投影系统用一片具有至少一个光学反射面的成像透镜取代了现有的投影系统中的多透镜结构，可有效地提高投影系统的控制光线的能力、像差优化能力，提高投影系统的解像力，并缩减了系统的体积和制造成本。