Light recycling is a method for developing high-power-density incoherent light sources, which combines significant challenges and high efficiency. However, the high processing difficulty and cost of traditional light recycling channels limit their widespread application. For this purpose, a spherical reflective film-coated light recycling lens is proposed, adopting a design method that is easy to model and process. This lens can be flexibly combined and matched, and it is suitable for LED chips of any wavelength, making it especially ideal for high-power-density LED applications. Simulations and experimental comparisons of three standard wavelengths were conducted in the industrial and medical fluorescence detection fields, namely 365 nm, 385 nm, and 455 nm. Among them, the measured values of far-field power-density enhancement in the 385 nm wavelength range are 19.56%?25.19%, which can meet the needs of some enterprises for increasing light source power density. This work innovatively demonstrates a design method for high-power-density lenses and presents an experimental process for a high-power-density light recycling channel. Thanks to the analysis and demonstration of experimental results, this concept provides new paths and design ideas for lighting enterprise designers, with potentially significant economic benefits.