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Compact LED projector design with high uniformity and efficiency

机译：紧凑的LED投影仪设计具有很高的均匀性和效率

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The aim of this study is to design a compact LED projector that is divided into two systems: an illumination system and an imaging optical system. The illumination system consists of an RGB LED light source with a collimator lens group and a mirror with a color filter and a lens array integrator instead of an integrated rod so as to improve the uniformity of the light intensity. By using a new total internal reflection prism and projection lens, the whole optical engine is smaller in size and has a higher contrast ratio for image quality. The imaging optical system consists of a total of eight lenses (six spherical lenses and two aspherical lenses), for a total length of 52 mm; a tolerance analysis is conducted. Optical simulation software is used for the system analysis in order to determine the efficiency and uniformity of the light intensity. In this design, the uniformity of the screen reaches more than 82%, and the efficiency increases by more than 44%.
机译：这项研究的目的是设计一种紧凑的LED投影仪，该投影仪分为两个系统：照明系统和成像光学系统。该照明系统由带准直透镜组的RGB LED光源，带滤色镜的反射镜和透镜阵列积分器（而不是集成杆）组成，以提高光强度的均匀性。通过使用新的全内反射棱镜和投影透镜，整个光学引擎尺寸更小，并且图像质量的对比度更高。成像光学系统总共由八个透镜（六个球面透镜和两个非球面透镜）组成，总长度为52毫米。进行公差分析。光学仿真软件用于系统分析，以确定光强度的效率和均匀性。在这种设计中，屏幕的均匀度达到82％以上，效率提高了44％以上。

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