Patent ID: 11966119
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A method of manufacturing an optical film from a rotatable member and a molding member, the method comprising the steps of:
forming a surface of a rolling member using a cutting member;
forming a surface of the molding member by moving and rotating the rolling member in a preset direction; and
forming an optical member into a first refractive layer by compressing the molding member against the optical member to form a plurality of embossed patterns having a first pattern and a second pattern with different heights,
wherein the first refractive layer is formed to have an upper surface and a lower surface including first projections and second projections extending away from the lower surface in a first direction, the second projections having different heights than the first projections, the first projections having lateral sides with different angles of inclination that decrease in the first direction away from the lower surface in which the lateral sides further from the lower surface have a lower angle of inclination than the lateral sides closer to the lower surface, in which a top surface of each of the first projections is a flat horizontal surface that has no inclination,
wherein the first pattern and the second pattern form a first lens pattern and a second lens pattern, respectively, each of which extends in a second direction different from the first direction on a plane,
wherein the first lens pattern extending in the second direction and the second lens pattern extending in the second direction are alternately arranged in a third direction crossing the second direction, the third direction different from the first direction,
wherein the first lens pattern and the second lens pattern each further extends in the third direction on a plane, and the first lens pattern extending in the third direction and the second lens pattern extending in the third direction are alternately arranged in the second direction, and
wherein the first lens pattern extending in the second direction, the second lens pattern extending in the second direction, the first lens pattern extending in the third direction, and the second lens pattern extending in the third direction are disposed in a same layer as each other in the first refractive layer.