▎ 摘　　要

NOVELTY - Optical film with low haze comprises substrate layer and a flatness adjusting layer. The haze of the substrate layer is 0.5-1.5%. The substrate layer comprises a first optical surface and a second optical surface. The flatness adjusting layer is arranged on the first optical surface and/or the second optical surface. The surface roughness Ra of the flatness adjustment layer is ≤ 10 nm. The flatness adjusting layer is made of a coating liquid of 10-50 wt.% acrylic ester polymer, 40-80 wt.% solvent and 1-10 wt.% initiator. The solvent is a poor solvent for the material of the substrate layer. The haze of the low-haze optical film is ≯ 0.3%. USE - The optical film is useful in vehicle-mounted display product manufacturing field comprising but are not limited to intelligent mobile phone, wearable device, flat computer, intelligent television, and augmented reality/virtual reality (AR/VR). ADVANTAGE - The method: is simple; prepares optical film with haze far lower than that of the prior art; and inhibits the visible light through the substrate layer when the light scattering, so as to reduce the haze of the whole optical film. The product: has low thickness, large surface roughness Ra, and large thickness of the material cost effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a conductive film, comprising optical film with low haze, and further comprises a functional layer, where the functional layer is located on the side of the flatness adjusting layer away from the substrate layer; and preparing the optical film with low haze, comprising (i) coating and drying the coating solution containing polymer and solvent on the surface of the release film through the slit precision coating technology, peeling off the release film, and obtaining the substrate layer, where the material of the polymer is the same as that of the substrate layer, and (ii) pre-shrinking the substrate layer until the shrinkage ratio of the substrate layer is MD ≤ 0.2% and TD ≤ 0.05%, and subjecting the first optical surface and/or the second optical surface of substrate layer to surface flatness treatment to form the flatness adjusting layer, so that the surface roughness is Ra ≤ 10 nm.