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:
Apr. 05, 2005
Filed:
Dec. 22, 2000
Thomas S. Faska, Brookline, NH (US);
Michael F. Taylor, Milford, NH (US);
Mani Sundaram, Nashua, NH (US);
Richard J. Williams, Hollis, NH (US);
Thomas S. Faska, Brookline, NH (US);
Michael F. Taylor, Milford, NH (US);
Mani Sundaram, Nashua, NH (US);
Richard J. Williams, Hollis, NH (US);
Bae Systems Information and Electronic Systems Integration INC, Nashua, NH (US);
Abstract
A semiconductor-based, photo detector device capable of simultaneously detecting two or more selected wavelengths of light on a pixel-registered basis. The device has detector layers of selected semiconductor materials of one micron or less in thickness interspersed with contact layers, each detector layer having a different light absorption to wavelength response curve. All contact layers, including detector bias voltages, have electrical contacts on the backside of the pixel for discrete pixel connection to mating connections on a suitable ROIC substrate. Among its several embodiments, there is a multi-color detector array and a single channel per pixel differential optical signal detector.