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US4779984A
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Method and apparatus for holographic spectrometry
Assignee: FREDERICK GOLDMAN Inc 154 WEST 14TH STREET NEW YORK NY 10011 A CORP OF
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Filing: 1987-02-24
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Granted: 1988-10-25
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Expires: 2007-02-24
Abstract
Abstract An integrated optic holographic spectrometer (10) for analyzing electromagnetic radiation from a source (12) is disclosed. The holographic spectrometer (10) comprises a substrate (18) having aperture (20) for restricting the receipt of electromagnetic radiation. The spectrometer (10) also includes two optical waveguides (22, 24) for dividing the electromagnetic radiation received through the aperture (20) into at least a first and second portions. A geodesic lens (26) is provided for collimating the first and second portions of the electromagnetic radiation. Finally, the spectrometer (10) includes a linear detector array (28) optically communicating with the geodesic lens (26) to provide an output responsive to the interference between the first and second portions of the electromagnetic radiation received through the aperture (20).
Inventors
- 👤 Lacy G. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:17
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/0205; G01J3/0208; G01J3/0256; G01J3/0259; G01J3/0294; G01J3/28; G01J3/45; G01J3/453; G01J3/4531; G02; G02B; G02B6/00; G02B6/10; G02B6/12; G02B6/12007; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29304; G02B6/29305; G02B6/2931; G02B6/29346; G02B6/29358; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4215
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
104 words
An integrated optic holographic spectrometer for analyzing electromagnetic radiation from a source comprising: means for restricting the receipt of said electromagnetic radiation; means for dividing the electromagnetic radiation received through said means for restricting electromagnetic radiation into at least a first and second portion, said means for dividing the electromagnetic radiation being integrated in a semiconductor substrate; means for collimating said first and second portions of said electromagnetic radiation, said means for collimating said first and second portions of said electromagnetic radiation being integrated in said semiconductor substrate; and means for detecting electromagnetic radiation optical communicating with said means for collimating said electromagnetic radiation.
Claim 2
Dependent Claim
104 words
An integrated optic holographic spectrometer for analyzing electromagnetic radiation from a source comprising: means for restricting the receipt of said electromagnetic radiation; means for dividing the electromagnetic radiation received through said means for restricting electromagnetic radiation into at least a first and second portion, said means for dividing the electromagnetic radiation being integrated in a semiconductor substrate; means for collimating said first and second portions of said electromagnetic radiation, said means for collimating said first and second portions of said electromagnetic radiation being integrated in said semiconductor substrate; and means for detecting electromagnetic radiation optical communicating with said means for collimating said electromagnetic radiation.
Claim 3
Dependent Claim
26 words
The integrated optic holographic spectrometer of claim 1, wherein said means for restricting the receipt of said electromagnetic radiation comprises an aperture disposed on said substrate.
Claim 4
Dependent Claim
52 words
The integrated optic holographic spectrometer of claim 1, wherein said means for dividing comprises first and second waveguides, said first waveguides operable to receive electromagnetic radiation from said means for restricting the receipt of electromagnetic radiation, said first waveguide operable to deliver a portion of said electromagnetic radiation to said second waveguide.
Claim 5
Dependent Claim
25 words
The integrated optic holographic spectrometer of claim 1, wherein said means for collimating said first and second portions of electromagnetic radiation comprises a geodesic lens.
Claim 6
Dependent Claim
35 words
The integrated optic holographic spectormeter of claim 1, wherein said means for detecting electromagnetic radiation comprises a linear detector array optically communicating with said means for collimating said first and second portions of electromagnetic radiation.
Claim 7
Dependent Claim
33 words
The integrated optic holographic spectrometer of claim 1, wherein said means for detecting electromagnetic radiation comprises a detector array operable to generate an output indicative of the spectral characteristics of said electromagnetic radiation.
Claim 8
Dependent Claim
38 words
The integrated optic holographic spectrometer of claim 6, wherein said electromagnetic radiation carries imaging information from said source, said linear detector array being operable to generate an output responsive to the imaging information carried by said electromagnetic radiation.
Claim 9
Dependent Claim
28 words
The integrated optic holographic spectrometer of claim 1, wherein said means for detecting electromagnetic radiation detects the interference between said first and second portions of said electromagnetic radiation.
Claim 10
Dependent Claim
71 words
An imaging sensor operable to detect spectral information comprising: a plurality of substrates, each of said substrates having means for restricting admission of electromagnetic radiation, means for dividing the electromagnetic radiation entering through said means for restricting into at least a first and second portion, means for collimating said electromagnetic radiation in said first and second portions, and means for detecting electromagnetic radiation which optically communicates with said means for collimating.
Claim 11
Dependent Claim
71 words
An imaging sensor operable to detect spectral information comprising: a plurality of substrates, each of said substrates having means for restricting admission of electromagnetic radiation, means for dividing the electromagnetic radiation entering through said means for restricting into at least a first and second portion, means for collimating said electromagnetic radiation in said first and second portions, and means for detecting electromagnetic radiation which optically communicates with said means for collimating.
Claim 12
Dependent Claim
17 words
The imaging sensor of claim 9, wherein said means for detecting electromagnetic comprises a linear detector array.
Claim 13
Dependent Claim
20 words
The infrared imaging sensor of claim 10, wherein said means for restricting the admission of electromagnetic radiation comprises an aperture.
Claim 14
Dependent Claim
21 words
The infrared imaging sensor of claim 11, wherein said means for dividing the electromagnetic radiation comprises a plurality of optical waveguides.
Claim 15
Dependent Claim
17 words
The imaging sensor of claim 12, wherein said plurality of waveguides form a dual channel directional coupler.
Claim 16
Dependent Claim
29 words
The imaging sensor of claim 13, wherein said waveguides are formed by altering the index of refraction of the region of the substrate where said said waveguides are disposed.
Claim 17
Dependent Claim
18 words
The infrared imaging sensor of claim 14, wherein said means for collimating electromagnetic radiation comprises a geodesic lens.
Claim 18
Dependent Claim
30 words
The imaging sensor of claim 15, wherein said geodesic lens is formed by altering the index of refraction of the region of the substrate where said geodesic lens is disposed.
Claim 19
Dependent Claim
28 words
The integrated optic holographic spectrometer of claim 9, wherein said means for detecting electromagnetic radiation detects the interference between said first and second portions of said electromagnetic radiation.
Claim 20
Independent Claim
66 words
A method for spectrally analyzing electromagnetic radiation comprising the steps of: receiving electromagnetic radiation from a source through a first waveguide; coupling a portion of the electromagnetic radiation propagating in said first waveguide into a second waveguide; collimating the electromagnetic radiation propagating through said first and second waveguides; and generating an output in response to the collimated electromagnetic radiation propagating through said first and second waveguides.
Claim 21
Independent Claim
66 words
A method for spectrally analyzing electromagnetic radiation comprising the steps of: receiving electromagnetic radiation from a source through a first waveguide; coupling a portion of the electromagnetic radiation propagating in said first waveguide into a second waveguide; collimating the electromagnetic radiation propagating through said first and second waveguides; and generating an output in response to the collimated electromagnetic radiation propagating through said first and second waveguides.
Claim 22
Dependent Claim
37 words
The method of claim 18, wherein said step of generating an output in response to the collimated electromagnetic radiation comprises the step of detecting the interference between the electromagnetic radiation propagating through said first and second waveguides.
Claim 23
Dependent Claim
33 words
The method of claim 19, wherein said step of coupling a portion of the electromagnetic radiation includes the step of permitting the received electromagnetic radiation to pass through a dual channel directional coupler.
Claim 24
Dependent Claim
24 words
The method of claim 20, wherein method comprises the additional step of generating an output responsive to the image carried by said electromagnetic radiation.
References Cited (Backward Citations)
US4523846A
Cited
US4558951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |