Patent US5048959A successfully refreshed from Google Patents.
US5048959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectrographic imaging system
Assignee: MICHIGAN A CORP OF MI, University of, Regents of
•
Filing: 1990-06-01
•
Granted: 1991-09-17
•
Expires: 2010-06-01
Abstract
Abstract An imaging system for providing spectrographically resolved images. The system incorporates a one-dimensional spatial encoding mask which enables an image to be projected onto a two-dimensional image detector after spectral dispersion of the image. The dimension of the image which is lost due to spectral dispersion on the two-dimensional detector is recovered through employing a reverse transform based on presenting a multiplicity of different spatial encoding patterns to the image. The system is especially adapted for detecting Raman scattering of monochromatic light transmitted through or reflected from physical samples. Preferably, spatial encoding is achieved through the use of Hadamard mask which selectively transmits or blocks portions of the image from the sample being evaluated.
Inventors
- 👤 Michael D. Morris
- 👤 Patrick J. Treado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:01
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28; G01J3/2846; G01J3/2823
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
157 words
A system for generating spectrographically resolved images comprising: means for providing an image for analysis defining x and y orthogonal axes, spatial encoding means defining encoding patterns for blocking portions of said image, said encoding means generating a multiplicity of different encoding patterns of predetermined configuration, optical means for defining a compressed line image in which said x axis direction of said image is compressed after portions thereof have been blocked by said encoding means while preserving said y axis direction of said image, spectrograph means for spectrally dispersing said compressed image wherein said spectral dispersion occurs along an axis perpendicular to the y direction of said compressed line image, two-dimensional image sensor means for detecting said dispersed image, and data storage and processing means for recording said encoding pattern of said encoding means and the corresponding output of said image sensor for a multiplicity of said different patterns and synthesizing spectrally resolved images at desired wavelengths.
Claim 2
Independent Claim
157 words
A system for generating spectrographically resolved images comprising: means for providing an image for analysis defining x and y orthogonal axes, spatial encoding means defining encoding patterns for blocking portions of said image, said encoding means generating a multiplicity of different encoding patterns of predetermined configuration, optical means for defining a compressed line image in which said x axis direction of said image is compressed after portions thereof have been blocked by said encoding means while preserving said y axis direction of said image, spectrograph means for spectrally dispersing said compressed image wherein said spectral dispersion occurs along an axis perpendicular to the y direction of said compressed line image, two-dimensional image sensor means for detecting said dispersed image, and data storage and processing means for recording said encoding pattern of said encoding means and the corresponding output of said image sensor for a multiplicity of said different patterns and synthesizing spectrally resolved images at desired wavelengths.
Claim 3
Dependent Claim
36 words
A system for generating spectrographically resolved images according to claim 1 wherein said means for providing an image comprises a monochromatic light source and said system detects Raman scattering of said light source by a sample.
Claim 4
Dependent Claim
22 words
A system for generating spectrographically resolved images according to claim 1 wherein said means for providing an image comprises an optical microscope.
Claim 5
Dependent Claim
29 words
A system for generating spectrographically resolved images according to claim 1 wherein said optical means comprises at least one cylindrical collimating lens and at least one cylindrical focusing lens.
Claim 6
Dependent Claim
45 words
A system for generating spectrographically resolved images according to claim 4 wherein said cylindrically collimating lens and said cylindrical focusing lens provide a focus for said x and y directions of said line image at a plane at an entrance slit of said spectrograph means.
Claim 7
Dependent Claim
19 words
A system for generating spectrographically resolved images according to claim 1 wherein said encoding means comprises a Hadamard mask.
Claim 8
Dependent Claim
36 words
A system for generating spectrographically resolved images according to claim 1 wherein said encoding means comprises one-dimensional encoding wherein portions of said image are blocked along said y axis at selected positions along said x axis.
References Cited (Backward Citations)
US3578980A
Cited
US3720469A
Cited
US4615619A
Cited
US4799795A
Cited
US4750834A
Cited
US4856897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |