Laminated lens package and method of fabricating the same
A laminated lens package and a method of fabricating the same are disclosed. The laminated lens package includes a first lens layer including a first lens element formed at one surface thereof through a first mold; a second lens layer including a second lens element formed at one surface thereof through a second mold, corresponding to a location of the first lens element; and a polymer layer provided between the first lens layer and the second lens layer. Accordingly, desired refraction can be implemented by controlling a refractive index. Also, since no spacers are used, defects caused by adhesion of an adhesive agent do not occur. Thus, a fabrication process is simplified, so that productivity can be improved and a fabrication cost can be reduced.
1. A method of fabricating a laminated lens package, the method comprising:
providing a first lens layer comprising a first lens element formed at one surface of a lens substrate through a first mold;
providing a polymer material at a predetermined height on the first lens layer comprising the first lens element;
pressing a second mold onto the polymer layer to form a pattern for a second lens element at a location in the polymer layer corresponding to a location of the first lens element;
providing a resin on the polymer layer in which the pattern for the second lens element is recessed; and
providing a second lens layer comprising the second lens element at one surface thereof.
2. The method of claim 1 , wherein the first lens layer and the second lens layer have identical or different refractive indices.
3. The method of claim 1 , further comprising pressing a third mold onto the resin provided on the polymer layer to simultaneously form the second lens element and a third lens element.
4. The method of claim 3 , wherein the third lens element is provided at the other surface of the second lens layer, corresponding to a location of the second lens element.
5. The method of claim 1 , further comprising providing a fourth lens element at the other surface of the lens substrate through a fourth mold, corresponding to a location of the first lens element.
6. The method of claim 1 , wherein the polymer layer has a refractive index lower than refractive indices of the first lens layer and the second lens layer.