Patent · US Active

Optical filtering matrix structure and associated image sensor

US8587080B2 · kind B2 · utility

12Cited by

1References

14Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Pierre Gidon · Échirolles, FR
Gilles Grand · Grenoble, FR

Key dates

Filing date	Jul 17, 2007
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Jan 21, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH10F39/8063
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to an optical filtering structure consisting of a set of at least two elementary optical filters (R, V, B), an elementary optical filter being centered on an optimum transmission frequency, characterized in that it comprises a stack of n metal layers (m1, m2, m3) and n substantially transparent layers (d1, d2, d3) which alternate between a first metal layer (m1) and an nth substantially transparent layer (d3), the n metal layers (m1, m2, m3) each having a constant thickness and at least one substantially transparent layer having a variable thickness which sets the optimum transmission frequency of an elementary optical filter, n being an integer larger than or equal to 2.Application to miniature image sensors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.