US3743422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical image processor
Assignee: Westinghouse Electric Corp
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Filing: 1970-06-18
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Granted: 1973-07-03
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Expires: 1990-06-18
Abstract
Abstract A processing array which permits the simultaneous filtering of a single input image by a number of different spatial frequency filters. A coherent collimated beam of light is divided into a plurality of smaller beams. The smaller beams are then collimated and are directed through a single portion of an input transparency. The beams coming from the input transparency are then directed through a transforming lens which produces the Fourier transform of each of the beams in the focal plane of the transforming lens. Because the Fourier transform of each beam is located at a different position in the Fourier plane, a different filtering operation can be performed at each of the points in the Fourier plane.
Inventors
- 👤 W Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/46; G06; G06V; G06V10/00; G06V10/88
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
57 words
A coherent optical image processor comprising an input transparency, a source of coherent light positioned to illuminate said input transparency, and optical system for generating at least two complete and separate diffraction patterns of the input transparency in a Fourier plane of said system and means for simultaneously performing a different filtering operation on each diffraction pattern.
Claim 2
Dependent Claim
57 words
A coherent optical image processor comprising an input transparency, a source of coherent light positioned to illuminate said input transparency, and optical system for generating at least two complete and separate diffraction patterns of the input transparency in a Fourier plane of said system and means for simultaneously performing a different filtering operation on each diffraction pattern.
Claim 3
Dependent Claim
75 words
The coherent optical image processor of claim 1, wherein said optical system includes a first means for generating a plurality of collimated light beams and for causing said light beams to be incident upon substantially a single portion of the input transparency; and a second means for performing a Fourier transformation on each of said collimated light beams and for directing each of the resultant diffraction patterns to a different position in said Fourier plane.
Claim 4
Dependent Claim
38 words
The coherent optical image processor of claim 2, wherein said first means includes a lens array positioned intermediate the source of coherent light and the input transparency for dividing the source light into a plurality of point sources.
Claim 5
Dependent Claim
24 words
The coherent optical image processor of claim 3, wherein the lens array comprises a plurality of positive condensing lenses situated intermediate two collimating lenses.
Claim 6
Dependent Claim
29 words
The coherent optical image processor of claim 2, wherein said first means includes at least one beam multiplier positioned intermediate the source of coherent light and the input transparency.
Claim 7
Dependent Claim
20 words
The coherent optical image processor of claim 1, including a means to reconstruct each image after it has been filtered.
Claim 8
Dependent Claim
34 words
The coherenT optical image processor of claim 6, wherein the image reconstructing means is comprised of a portion of the said optical system and includes a lens array consisting of at least two lenses.
Claim 9
Dependent Claim
17 words
The coherent optical image processor of claim 2, wherein said second means includes at least one lens.
Claim 10
Dependent Claim
17 words
The coherent optical image processor of claim 2, wherein said second means includes a plurality of lenses.
Claim 11
Dependent Claim
40 words
The coherent optical image processor of claim 1, including a detection means positioned behind said filter means for measuring the intensity and pattern of the filtered pattern; and a data processor for analyzing the information measured by said detection means.
References Cited (Backward Citations)
GB1143086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |