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:
Nov. 30, 2004
Filed:
Mar. 04, 1999
Rudolf Schwarte, D-57250 Netphen, DE;
Other;
Abstract
A method and corresponding device for determining the phase- and/or amplitude data of an electromagnetic wave. In order to bring about the spatial depth resolution of the image data obtained, the method according to the invention comprises the following steps: an electromagnetic wave is beamed onto the surface of a photonic mixed element comprising at least one pixel, the pixel having at least two light-sensitive modulation light gates G and G and associated accumulation gates G and G ; modulation light gate voltages U (t) and U (t), which are configured as U (t)=U +U (t) and U (t)=U −U (t), are applied to the modulation light gates G and G ; a direct voltage, whose magnitude is at least the same as that of the total of U and the amplitude of the modulation voltage U (t), is applied to the accumulation gates G and G ; the charge carriers produced in the space charge region of the modulation light gates G and G by the incident electromagnetic wave are subjected, as a function of the polarity of the modulation light gate voltages U (t) and U (t), to the potential gradient of a drift field and drift to the corresponding accumulation gate G or G ; and the charges q and q which have drifted to the accumulation gates G and G , respectively, are diverted. The corresponding photonic mixed element has at least one pixel which comprises at least two light-sensitive modulation light gates (G , G ) and accumulation gates (G , G ) which are associated with the modulation light gates and are partitioned with respect to the incident electromagnetic wave. A plurality of photonic mixed elements can be assembled to form an array.