Photonic crystal-based lens elements for use in an image sensor

Details Photonic crystal-based lens elements for use in an image sensor Photonic crystal-based lens elements for use in an image sensor

2006-06-01

2008-08-05

Nadav, Ori (Department: 2811)

Active solid-state devices (e.g., transistors, solid-state diode

Responsive to non-electrical signal

Electromagnetic or particle radiation

C257S072000

Reexamination Certificate

active

07408237

ABSTRACT:
The invention, in various exemplary embodiments, incorporates a photonic crystal lens element into an image sensor. The photonic crystal lens element comprises a substrate and a plurality of pillars forming a photonic crystal structure over the substrate. The pillars are spaced apart from each other. Each pillar has a height and a horizontal cross sectional shape. A material with a different dielectric constant than the pillars is provided within the spacing between the pillars. The photonic crystal element can be a lens configured to focus electromagnetic radiation onto an underlying pixel cell.

REFERENCES:
patent: 2003/0063204 (2003-04-01), Suda
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