US3795768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic image scanner/recorder system
Assignee: Comsat Corp
•
Filing: 1971-12-15
•
Granted: 1974-03-05
•
Expires: 1991-12-15
Abstract
Abstract A holographic image recording and scanning system using a rotating reflection hologram to produce rotating reconstructed image spots. Recording is accomplished by securing a record medium about the circular path traveled by the reconstructed image spots and varying the intensity of the illuminating beam. To record color images, both the intensity and spectral content of the illuminating beam are varied with time. To provide registration between the reconstructed image spots rotating in a scanning circle and the images on the record medium, the medium is curved to correspond to the circumference of the scanning circle. Image reproduction is accomplished by situating a record medium containing prerecorded images in registration with the scanning circle and scanning the medium with reconstructed image spots. Variations in the intensity of the beam transmitted through the record medium when the medium is transparent, or reflected from the medium when it is opaque, are detected by suitable photodetector means. When color images are to be detected, the variations in both the intensity and spectral content of either the transmitted light or the reflected light are detected.
Inventors
- 👤 J Locke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:51
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/126; H04N1/1265; G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B26/106; H04N5/00; H04N5/76; H04N5/89
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
88 words
An image scanning and recording system comprising; a. a reflection hologram for holographically generating an image spot, b. means for rotating said image spot generating means to cause the image spot to scan a locus of points defining a scanning circle and c. a record medium, parallel to the axis of rotation of said image spot generating means, and curved to form an arc having a radius centered at said axis of rotation, said arc radius being of the same length as the radius of the scanning circle.
Claim 2
Dependent Claim
88 words
An image scanning and recording system comprising; a. a reflection hologram for holographically generating an image spot, b. means for rotating said image spot generating means to cause the image spot to scan a locus of points defining a scanning circle and c. a record medium, parallel to the axis of rotation of said image spot generating means, and curved to form an arc having a radius centered at said axis of rotation, said arc radius being of the same length as the radius of the scanning circle.
Claim 3
Dependent Claim
24 words
The system of claim 1 wherein said means for holographically generating further comprises an illuminating beam directed onto the surface of said reflection hologram.
Claim 4
Dependent Claim
41 words
The system of claim 2 wherein said record medium is radiation sensitive, further including means for varying the intensity of the illuminating beam and means for moving said record medium in a direction perpendicular to the plane of said scanning circle.
Claim 5
Dependent Claim
25 words
The system of claim 3 wherein said record medium is color sensitive film, further including means for varying the spectral content of said illuminating beam.
Claim 6
Dependent Claim
46 words
The system of claim 2 wherein said record medium contains prerecorded images, further including radiation sensitive detector means, responsive to radiation from the record medium, produced in response to the image spot, for generating electrical signals proportional to the intensity of radiation from the record medium.
Claim 7
Dependent Claim
24 words
The system of claim 5 wherein said radiation sensitive detector means include means for discriminating the wavelengths of the radiation from said recording medium.
Claim 8
Dependent Claim
80 words
An image scanning and recording system comprIsing; a. a reflection hologram plate having an interference pattern corresponding to an image spot developed thereon. b. means, operating on said hologram plate for reconstructing the image spot in space, c. meansfor rotating said hologram plate to cause the reconstructed image spot to travel about the circumference of a circle centered about the axis of rotation of said hologram plate and d. a record medium positioned to be intersected by said image spot.
Claim 9
Dependent Claim
80 words
An image scanning and recording system comprIsing; a. a reflection hologram plate having an interference pattern corresponding to an image spot developed thereon. b. means, operating on said hologram plate for reconstructing the image spot in space, c. meansfor rotating said hologram plate to cause the reconstructed image spot to travel about the circumference of a circle centered about the axis of rotation of said hologram plate and d. a record medium positioned to be intersected by said image spot.
Claim 10
Dependent Claim
45 words
The system of claim 7 wherein said record medium is positioned parallel to said axis of rotation and is curved to form an arc having a radius centered at said axis and of a length equal to the length of the radius of said circle.
Claim 11
Dependent Claim
24 words
The system of claim 7 wherein said means for reconstructing said image spot comprises means for illuminating said hologram plate with an illuminating beam.
Claim 12
Dependent Claim
41 words
The system of claim 9 wherein said record medium is radiation sensitive, further including means for varying the intensity of the illuminating beam and means for moving said record medium in a direction perpendicular to the plane of said scanning circle.
Claim 13
Dependent Claim
25 words
The system of claim 10 wherein said record medium is color sensitive film, further including means for varying the spectral content of said illuminating beam.
Claim 14
Dependent Claim
46 words
The system of claim 9 wherein said record medium contains prerecorded images, further including radiation sensitive detector means, responsive to radiation from the record medium, produced in response to the image spot, for generating electrical signals proportional to the intensity of radiation from the record medium.
Claim 15
Dependent Claim
24 words
The system of claim 12 wherein said radiation sensitive detector means include means for discriminating the wavelengths of the radiation from said recording medium.
Claim 16
Dependent Claim
86 words
An image scanning and recording system comprising: a. means for holographically generating an image spot, b. means for rotating said image spot generating means to cause the image spot to scan a locus of points defining a scanning circle and c. a record medium, parallel to the axis of rotation of said image spot generating means, and curved to form an arc having a radius centered at said axis of rotation, said arc radius being of the same length as the radius of the scanning circle.
Claim 17
Dependent Claim
86 words
An image scanning and recording system comprising: a. means for holographically generating an image spot, b. means for rotating said image spot generating means to cause the image spot to scan a locus of points defining a scanning circle and c. a record medium, parallel to the axis of rotation of said image spot generating means, and curved to form an arc having a radius centered at said axis of rotation, said arc radius being of the same length as the radius of the scanning circle.
Claim 18
Dependent Claim
39 words
The image scanning and recording system of claim 14, further comprising means for causing said record member to move in a direction normal to the plane of the scanning circle to thereby scan successive lines on the recording medium.
References Cited (Backward Citations)
US1962474A
Cited
US3619033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |