Photonic crystal-based filter for use in an image sensor

Details Photonic crystal-based filter for use in an image sensor Photonic crystal-based filter for use in an image sensor

2006-04-24

2008-10-21

Epps, Georgia Y. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S226000, C257S257000, C257S290000, C348S273000

Reexamination Certificate

active

07439479

ABSTRACT:
The invention, in various exemplary embodiments, incorporates a photonic crystal filter into an image sensor. The photonic crystal filter 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 filter is configured to selectively permit particular wavelengths of electromagnetic radiation to pass through.

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