A new preparation method of a light‐focusing plastic rod (LFR) is reported, where the photocopolymerization of methacrylic esters (M1) such as methyl methacrylate (MMA) with vinyl benzoates (M2) such as vinyl benzoate (VB), vinylo‐chlorobenzoate, and vinylo,p‐dichloro‐benzoate was carried out. TheM1‐M2mixture placed in a glass tube was exposed to uv light by rotating a glass tube about its axis. LFR prepared from a MMA‐VB pair has a quadratic gradient constant with a refractive indexA= (3∼11) ×10−3mm−2, an internal loss of light transmission IL= (3∼12) dB/m, and a ratio of the radius of the imaging region to the rod radius (ri/rp) =0.5∼0.7.