Abstract: Based on the analysis of near back scattered light in laser fusion, a method was proposed to collect near back scattered light by using diffuser panel. Based on the analysis of the application scenarios of the diffuser panel, the characteristic of the diffuser panel was presented. A device for measuring the characteristics of diffuser panel was set up. The directional hemispherical reflectance(DHR), bidirectional reflectance distribution function, surface uniformity, vacuum and UV properties were measured and analyzed. The analysis results show that the F4 target panel has a high reflectivity close to 0.99, the spectral flatness, the bidirectional reflectance distribution function(BRDF) of approximate cosine distribution, 0.869 6% of the higher surface uniformity, as well as the smaller UV vacuum influence. Therefore, the F4 target panel meets the measurement requirements of the near back scattered light in laser inertial confinement fusion (ICF), and it is feasible to use the diffuser panel to collect the near back scattered light.