A photoelectric conversion device is provided which is capable of
improving the light condensation efficiency without substantially
decreasing the sensitivity. The photoelectric conversion device has a
first pattern provided above an element isolation region formed between
adjacent two photoelectric conversion elements, a second pattern provided
above the element isolation region and above the first pattern, and
microlenses provided above the photoelectric conversion elements with the
first and the second patterns provided therebetween. The photoelectric
conversion device further has convex-shaped interlayer lenses in optical
paths between the photoelectric conversion elements and the microlenses,
the peak of each convex shape projecting in the direction from the
electro-optical element to the microlens.