根据非成像光学理论,从能量传递的角度分析了发光二极管(LED)抛物反射器几何参数与LED绕垂直于光线传播方向轴旋转角度对能量收集率的影响,建立了统一的抛物反射器的光能利用率与几何参数及LED旋转角度的解析表达式。分析结果表明,利用光学扩展量来评价LED抛物反射器的能量收集率是合理的;通过旋转LED光源,可进一步提高光能收集率,抛物反射器的几何参数不同,其最佳的旋转角度也不同。仿真模拟结果与理论分析结论基本一致。 According to the theory of non-imaging optics, the influence of geometrical parameters of LED parabolic reflector and the angle of rotation of LED around the direction perpendicular to the light propagation axis on the energy collection rate is analyzed from the perspective of energy transfer. A unified parabolic reflector light Analytical expression of the utilization rate, geometric parameters and LED rotation angle. The analysis results show that it is reasonable to use the optical etendue to evaluate the energy collection rate of the LED parabolic reflector. By rotating the LED light source, the light energy collection rate can be further increased. The geometric parameters of the parabolic reflector are different. The optimal rotation angle different. The results of simulation and theoretical analysis are basically the same.