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, 2010
Filed:
May. 29, 2007
Sheng Wu, San Gabriel, CA (US);
Andrei Deev, Pasadena, CA (US);
Steve L. Palm, Escondido, CA (US);
Yongchun Tang, Walnut, CA (US);
William A. Goddard, Pasadena, CA (US);
Sheng Wu, San Gabriel, CA (US);
Andrei Deev, Pasadena, CA (US);
Steve L. Palm, Escondido, CA (US);
Yongchun Tang, Walnut, CA (US);
William A. Goddard, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
A frequency modulated spectroscopy system, including a photo-detector, a band-pass filter to filter the output of the photo-detector, and a rectifier to demodulate. The band-pass filter has a relatively high Q factor. With the high Q factor band-pass filter and rectifier, a reference sinusoid is not required for demodulation, resulting in phase-insensitive spectroscopy. Other embodiments are described and claimed.