US3734599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical raster-to-line converter
Assignee: AT&T Inc
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Filing: 1971-11-09
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Granted: 1973-05-22
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Expires: 1991-11-09
Abstract
Abstract A two-dimensional matrix array of light beams is translated into a linear array having the same number of spots. This is accomplished by an optical converter that comprises a cylindrical lenslet plate crossed, not quite orthogonally, with a single cylindrical lens. Each column of the matrix array of light beams is imaged by the converter to form a segment of the final line array.
Inventors
- 👤 M Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:47
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/09; G02B27/0938; G02B27/095; G02B27/0955
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
237 words
An optical arrangement for reordering a matrix array of rows and columns of light spots into a corresponding linear array of light spots, said arrangement comprising: a light beam directed to any one of a first plurality of target areas arranged in said matrix array of rows and columns, said columns being aligned at a predetermined angle theta other than the perpendicular with respect to said rows; and means, interposed in the path of said beam and following said matrix array, for redirecting said beam from any given one of said first target areas to a corresponding one of an equal number of second nonoverlapping target areas disposed in a linear array, said redirecting means comprising plural cylindrical lenses, each of said lenses being aligned parallel with a different column of said matrix array and being configured to reduce the images of the target areas in the column in a direction perpendicular to said column, and a cyLindrical focusing lens positioned in the path of said beam between said plural cylindrical lenses and said linear array of second target areas, said focusing lens being aligned parallel with respect to said rows of first target areas to reduce the dimensions in a direction perpendicular to said rows of each column of the images of said second target areas and in cooperation with said plural cylindrical lenses to project said images into said linear array of second target areas.
Claim 2
Dependent Claim
237 words
An optical arrangement for reordering a matrix array of rows and columns of light spots into a corresponding linear array of light spots, said arrangement comprising: a light beam directed to any one of a first plurality of target areas arranged in said matrix array of rows and columns, said columns being aligned at a predetermined angle theta other than the perpendicular with respect to said rows; and means, interposed in the path of said beam and following said matrix array, for redirecting said beam from any given one of said first target areas to a corresponding one of an equal number of second nonoverlapping target areas disposed in a linear array, said redirecting means comprising plural cylindrical lenses, each of said lenses being aligned parallel with a different column of said matrix array and being configured to reduce the images of the target areas in the column in a direction perpendicular to said column, and a cyLindrical focusing lens positioned in the path of said beam between said plural cylindrical lenses and said linear array of second target areas, said focusing lens being aligned parallel with respect to said rows of first target areas to reduce the dimensions in a direction perpendicular to said rows of each column of the images of said second target areas and in cooperation with said plural cylindrical lenses to project said images into said linear array of second target areas.
Claim 3
Dependent Claim
40 words
The arrangement in accordance with claim 1 in which said linear array is aligned parallel with the rows of said matrix, and said cylindrical focusing lens and said plural cylindrical lenses are confocal with respect to said second target areas.
Claim 4
Dependent Claim
68 words
The arrangement in accordance with claim 2 in which said first target areas have a substantially round geometry, and said second target areas and the images projected onto said second target areas of said linear array have a substantially round geometry, said images and said second target areas having a diameter reduced by approximately the factor sin theta with respect to the diameter of said first target areas.
Claim 5
Dependent Claim
65 words
The arrangement in accordance with claim 3 in which said first target areas are tangential to one another only at points along lines parallel with said rows and columns and passing through the geometric centers of such target areas, and said second target areas are tangential to one another only at points along a line passing through the geometric centers of said second target areas.
Claim 6
Dependent Claim
21 words
The arrangement in accordance with claim 3 in which said plural cylindrical lenses are formed on a multielement cylindrical lenslet plate.
Claim 7
Dependent Claim
78 words
The arrangement in accordance with claim 1 in which each of said plural cylindrical lenses is configured to reduce a matrix area image dimension in a direction perpendicular to said columns to the dimension, in the same direction, of a linear array target area; and said cylindrical focusing lens is configured to reduce a matrix column image dimension, in a direction perpendicular to said rows, to the dimension, in the same direction, of a linear array target area.
References Cited (Backward Citations)
US2021162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |