Patent ID: 8501054

Claim:
A method of manufacturing micro lens array, the method comprising: preparing a master plate comprising a plurality of molding grooves on one side of the master plate, inside a vacuum chamber; preparing a substrate constituting a raw material of a lens on the side of the master plate where the plurality of molding grooves are included; forming a vacuum inside the vacuum chamber; adhering the master plate and the substrate; heating the substrate after adhering the master plate and the substrate; releasing the vacuum in the vacuum chamber by opening, the vacuum chamber after heating the substrate; and forming the lens by separating the substrate from the master plate after cooling down the master plate and the substrate, wherein the forming of the vacuum comprises adjusting a curvature of the lens by adjusting a degree of vacuum in the vacuum chamber, wherein a depth of each molding groove is formed to be larger than a thickness of each lens to be manufactured so that a rounded surface of each lens is formed without being in contact with a bottom surface of each molding groove.