Patent US3704884A successfully refreshed from Google Patents.
Patent US5483335A successfully refreshed from Google Patents.
US5483335A
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Multiplex spectroscopy
Assignee: Individual
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Filing: 1994-04-05
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Granted: 1996-01-09
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Expires: 2014-04-05
Abstract
Abstract Analysis of energy emanating from a source having a focal plane by converting the energy from the source into modulated spectral components simultaneously distributed according to frequency along a flat field, using, for example, a modulator, and then detecting and demodulating the spectral components, for example by a fast Fourier transform or synchronous demodulator with a ruled grating interposable between the source and the detector and a linear variable bandpass filter interposable between the source and the detector.
Inventors
- 👤 Reginald Tobias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:58
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/30; G01J3/32; G01J2003/326; G01J3/12; G01J3/18; G01J3/20
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
48 words
Apparatus for analyzing energy emanating from a source having a focal plane, which comprises: means at said focal plane for converting said energy from the source into modulated spectral components simultaneously distributed according to frequency along a flat field; and means for detecting and demodulating said spectral components.
Claim 2
Dependent Claim
48 words
Apparatus for analyzing energy emanating from a source having a focal plane, which comprises: means at said focal plane for converting said energy from the source into modulated spectral components simultaneously distributed according to frequency along a flat field; and means for detecting and demodulating said spectral components.
Claim 3
Dependent Claim
29 words
Apparatus as defined in claim 1 wherein said means for converting energy from the source into spectral components distributed according to frequency along a flat field comprises a modulator.
Claim 4
Dependent Claim
29 words
Apparatus as defined in claim 2 wherein said modulator for converting energy from the source into spectral components distributed according to frequency along a flat field comprises a chopper.
Claim 5
Dependent Claim
31 words
Apparatus as defined in claim 3 wherein said chopper for converting energy from the source into spectral components distributed according to frequency along a flat field comprises an apertured, rotatable member.
Claim 6
Dependent Claim
39 words
Apparatus as defined in claim 4 wherein said apertured, rotatable member for converting energy from the source into spectral components distributed according to frequency along a flat field comprises a member with said apertures proportioned to generated sinusoidal signals.
Claim 7
Dependent Claim
14 words
Apparatus as defined in claim 5 wherein said grating comprises a planar ruled grating.
Claim 8
Dependent Claim
20 words
Apparatus as defined in claim 1 wherein a ruled grating is interposed between said source and said means for detecting.
Claim 9
Dependent Claim
19 words
Apparatus as defined in claim 1 wherein said demodulator for detecting spectral components comprises a fast Fourier transform demodulator.
Claim 10
Dependent Claim
18 words
Apparatus as defined in claim 1 wherein said demodulator for detecting said spectral components comprises a synchronous demodulator.
Claim 11
Dependent Claim
64 words
Apparatus for analyzing energy emanating from a source having a focal plane, which comprises: means at said focal plane for converting said energy from the source into spectral components simultaneously distributed according to frequency along a flat field; and means for detecting said spectral components; wherein a linear variable bandpass filter is interposed between said source and said means for detecting said spectral components.
Claim 12
Dependent Claim
64 words
Apparatus for analyzing energy emanating from a source having a focal plane, which comprises: means at said focal plane for converting said energy from the source into spectral components simultaneously distributed according to frequency along a flat field; and means for detecting said spectral components; wherein a linear variable bandpass filter is interposed between said source and said means for detecting said spectral components.
Claim 13
Independent Claim
48 words
A method of analyzing energy emanating from a source, which comprises: (a) converting said energy from the source into spectral components distributed according to frequency along a flat field; and (b) detecting said spectral components; wherein said spectral components are modulated, further including (c) demodulating said spectral components.
Claim 14
Independent Claim
48 words
A method of analyzing energy emanating from a source, which comprises: (a) converting said energy from the source into spectral components distributed according to frequency along a flat field; and (b) detecting said spectral components; wherein said spectral components are modulated, further including (c) demodulating said spectral components.
Claim 15
Independent Claim
44 words
The method of analyzing energy emanating from a source having a focal plane for said energy, which comprises illuminating said focal plane with light from said source; and recombining all wavelengths present at the focal plane into a single beam at an exit aperture.
Claim 16
Independent Claim
44 words
The method of analyzing energy emanating from a source having a focal plane for said energy, which comprises illuminating said focal plane with light from said source; and recombining all wavelengths present at the focal plane into a single beam at an exit aperture.
Claim 17
Dependent Claim
32 words
The method of claim 12 wherein said light has a plurality of wavelengths, further including accepting at each point on the focal plane only the wavelength of light corresponding with that point.
Claim 18
Dependent Claim
29 words
The method of claim 12 wherein said chopper wheel has a plurality of apertures, further including providing a different number of apertures per revolution as the chopper wheel rotates.
Claim 19
Dependent Claim
36 words
The method of claim 12 wherein said focal plane has an exit aperture and each wavelength arrives at the exit aperture modulated at a different frequency, and a single detector is placed at the exit aperture.
Claim 20
Dependent Claim
38 words
The method of claim 12 further including harmonic avoidance by structuring each chopper aperture to generate a pure sine wave as it passes over an associated focal plane aperture, thereby to eliminate cross talk due to chopping harmonics.
Claim 21
Independent Claim
62 words
The method of analyzing energy emanating from a source having a focal plane for said energy, which comprises illuminating said focal plane with light from said source; and placing a modulator such as a chopper wheel at the focal plane so that a set of apertures of width equal to an array pixel (single detector) is spaced in a row close together.
Claim 22
Independent Claim
62 words
The method of analyzing energy emanating from a source having a focal plane for said energy, which comprises illuminating said focal plane with light from said source; and placing a modulator such as a chopper wheel at the focal plane so that a set of apertures of width equal to an array pixel (single detector) is spaced in a row close together.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-08 | 1999-07-10 | 2000-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-08 | 2003-07-10 | 2004-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-08 | 2007-07-10 | 2008-01-09 | $7700.00 | Window Closed / Lapsed |