Method of positioning elements, particularly optical elements, on the back side of a hybridized-type infrared detector
AssigneeSociete Francaise de Detecteurs Infrarouges-Sofradir
InventorsOlivier Chevrier, Emmanuel Carrere, Nicolas Pere-Laperne
Life of this patent
Estimating the term…
Abstract
A method of positioning elements or additional technological levels on the incident surface of an infrared detector of hybridized type, said detector being formed of a detection circuit comprising an array network of photosensitive sites for the wavelength ranges of interest, hybridized on a read circuit, said detection circuit resulting from the epitaxial growth of a detection material on a substrate, comprising forming within the detection circuit indexing patterns by marking of the growth substrate.
Claims10
A method of positioning an optical filter on an incident surface of an infrared detector of hybridized type, the incident surface having a perimeter and receiving infrared radiation to be detected by said infrared detector being formed of a detection circuit comprising an array network of photosensitive sites for a wavelength range of interest, hybridized on a read circuit, said detection circuit resulting from an epitaxial growth of a detection material on a growth substrate, wherein the method comprises forming, within said detection circuit, indexing patterns having a geometric shape on the incident surface of said infrared detector, such that the entirety of the geometric shape is formed within the perimeter of the incident surface of said infrared detector, for the positioning of the optical filter relative to said detection circuit by marking of the growth substrate, providing the optical filter to be positioned on the incident surface of said infrared detector, and performing the positioning of the optical filter on the incident surface of said infrared detector such that the optical filter is aligned with the geometric shape.
Dependencies are inferred from the claim text.