| 摘要 |
PURPOSE: An optical sheet, a manufacturing method thereof, and an optical device are provided to reduce manufacturing costs and time by offering the optical sheet in which a pattern is formed on both sides. CONSTITUTION: An optical sheet(100) comprises a base sheet(102), a first prism pattern, and a top pattern. The base sheet, a trigonal prism pattern(104), and a second prism pattern(106) are composed of same material or different material with each other. The base sheet, the trigonal prism pattern, and the second prism pattern can be composed of a thermoplastic resin in a visible light area. The trigonal prism pattern is formed at the lower side of the base sheet. The second prism pattern is formed at the upper side of the base sheet corresponding to the upper side of the base sheet. |
