Micro-lens configuration for small lens focusing in digital imaging devices

A method of fabricating an image sensor, the method comprising:

• providing a substrate comprising a plurality of photosensitive regions having photo sensors, and an upper substrate layer;
• forming a second micro-lens array having second micro-lenses over the upper substrate layer;
• applying a sacrificial material to the second micro-lens array;
• forming support molds in the sacrificial material;
• forming lens molds in the sacrificial material;
• forming supports by filling the support molds with a support material;
• forming a first micro-lens array having first micro-lenses by filling the lens molds with a first micro-lens material;
• and
• removing the sacrificial material.