Lighting device

A lighting device for vehicle lamps, comprising:

• a substrate;
• a heat dissipation member disposed below the substrate;
• a plurality of light sources disposed on the substrate;
• a resin layer disposed on the substrate and covering the plurality of light sources;
• an optical pattern layer disposed on the resin layer;
• and
• a diffusion plate or a plurality of micro lenses disposed on the optical pattern layer,
• wherein the plurality of light sources are side view type light-emitting elements configured to emit light toward a side of the resin layer, and
• wherein the optical pattern layer comprises a first optical sheet disposed on the resin layer, a second optical sheet disposed on the first optical sheet, a plurality of optical patterns disposed between the first optical sheet and the second optical sheet, and an adhesive layer disposed between the first optical sheet and the second optical sheet,
• wherein a part of the adhesive layer is disposed between the plurality of optical patterns and the first optical sheet, and
• wherein an air gap is disposed around each of the plurality of optical patterns to separate the adhesive layer from the optical patterns.