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. 16, 2002
Filed:
Jan. 20, 2000
Applicant:
Inventor:
Klaus Knupfer, Essingen, DE;
Assignee:
Carl-Zeiss-Stiftung, Heidenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 3/08 ;
U.S. Cl.
CPC ...
G01C 3/08 ;
Abstract
The invention is directed to an optoelectronic mixer for demodulating a high-frequency light signal amplitude modulated at a signal frequency (f ) The optoelectronic mixer includes a light sensor for receiving and converting the light signal into free charge carriers. The light sensor has at least two individually drivable sensor electrodes and a reference frequency generator supplies an alternating-current voltage at a reference frequency (f ). The reference frequency generator is connected to the sensor electrodes to alternately conduct the charge carriers to the one or the other of the sensor electrodes at the reference frequency (f ).