The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 28, 2012
Filed:
Jul. 01, 2009
Emmanuelle Vigier-blanc, Le Sappey en Chartreuse, FR;
Guillaume Cassar, Grenoble, FR;
Thierry Lepine, Saint-Heand, FR;
Emmanuelle Vigier-Blanc, Le Sappey en Chartreuse, FR;
Guillaume Cassar, Grenoble, FR;
Thierry Lepine, Saint-Heand, FR;
STMicroelectronics (Grenoble) SAS, Grenoble, FR;
Abstract
An optical die, which is intended to be placed in front of an optical sensor of a semiconductor component, has an optically useful zone having an optical axis and exhibiting a variable refractive index. Specifically the refractive index of the die is variable in an annular peripheral zone lying between a radius Ru enveloping the useful zone and a smaller radius Ro. The index varies as a function of radial distance from a lower value near the smaller radius Ro to a higher value near the radius Ru. The function of the variable refractive index lies between a maximum and minimum profile.