PLASTIC OPTICAL PARTS HAVING ANTIREFLECTION FILM

摘要

PROBLEM TO BE SOLVED: To obtain plastic optical parts having antireflection films which are manufactured by utilizing a sputtering method and have the high evaluation of film performance by using specific multilayered films deposited by laminating high-refractive index materials and low-refractive index materials as the antireflection films. SOLUTION: The optical parts are formed by applying the antireflection films 13 on at least one surface of a plastic base material 11. The antireflection films 13 are the multilayered films 131 to 140 deposited by substantially consisting the first layer 131 on the plastic base material 11 side of a high refractive index material and consisting the next layer 132 thereof of the low- refractive index material and alternately laminating the high-refractive index materials and the low-refractive index materials. The main wavelength range thereof is 480 to 550 nm, the stimulus purity range thereof is 10 to 30% and the visual reflectivity thereof is 0.7 to 1.8%. The multilayered films are so formed as to exhibit interference colors of a green system. Since the antireflection films are designed to induce the interference colors of the green system, a lens having excellent aesthetic feel and high commercial value is obtd. if the spectacle plastic lens is formed.