Method and apparatus for spectrum analysis and encoder

Details Method and apparatus for spectrum analysis and encoder Method and apparatus for spectrum analysis and encoder

2006-01-03

2006-01-03

Smith, Zandra V. (Department: 2877)

Optics: measuring and testing

By dispersed light spectroscopy

With aperture mask

C356S323000, C356S326000

Reexamination Certificate

active

06982788

ABSTRACT:
A disc serving as a spatial radiation modulator has dispersed radiation filters thereon. Each filter has a transmittance or reflectance modulation function of the form sin2(mθ+pπ/4), where m is a positive integer and p has one of the four values 0, 1, 2, 3. A radiation beam including selected wavelength components is diffracted into an elongated image dispersed according to wavelength. Different wavelength components are focused onto different filters on the modulator and are encoded by correspond filters. Since the modulation functions of the filters are orthogonal to one another, it is possible to extract the amplitude of each wavelength component after it has been encoded or modulated by corresponding filter from the total detected signal during one measurement.

REFERENCES:
patent: 3922092 (1975-11-01), van den Bosch
patent: 4264205 (1981-04-01), Landa
patent: 4448529 (1984-05-01), Krause
patent: 5121239 (1992-06-01), Post
patent: 5485268 (1996-01-01), Tobias
patent: 5686722 (1997-11-01), Dubois et al.

Affiliated with

Also associated with

Rating

Method and apparatus for spectrum analysis and encoder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for spectrum analysis and encoder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for spectrum analysis and encoder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3546935