Lens structure and manufacturing method thereof

A lens structure comprising:

• a multilayered aperture having a form of a metal layer-dielectric layer-metal layer stacked in a vertical direction and having pore patterns formed on both metal layers;
• and
• a microlens array provided on one side surface of the multilayered aperture,
• wherein the multilayered aperture includes:
• a first metal layer having a first pore pattern;
• a dielectric layer disposed on the first metal layer;
• and
• a second metal layer disposed on the dielectric layer and having a second pore pattern aligned with the first pore pattern in a row,
• wherein the microlens array is formed to include a plurality of microlenses provided on each pore of the second metal layer,
• wherein
• the first metal layer is formed on a substrate, and
• the first metal layer has a thickness smaller than that of the second metal layer, and
• wherein
• the first metal layer has the thickness of 1 to 20 nm,
• the dielectric layer has a thickness of 50 to 300 nm, and
• the second metal layer has the thickness of 100 nm or more.