| abstract |
Disclosed are a lens sheet wherein when molding a resin no damage is caused to a mold to there by enable the optical function of light diffusion agent particles to be enhanced, a projection screen, and a method of manufacturing the lens sheet. In a lens sheet having a base material sheet that has a lens formed on at least one surface thereof using an ionizing radiation curable resin, light diffusion agent particles are mixed into the base material sheet and have a mass average particle diameter of 3 to 25 μm and, when d represents the mass average particle diameter of the light diffusion agent particle and h represents the interval between the trough of the lens configuration of the lens and the surface on the lens-formation surface side of the base sheet material, there hold true the inequality: n h>d /3 |