US3655258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic imaging of a moving object by detecting radiation along a line perpendicular to the object direction of travel
Assignee: Holotron Corp
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Filing: 1970-04-20
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Granted: 1972-04-11
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Expires: 1990-04-20
Abstract
Abstract An object is passed through a radiation beam along a line and resulting object-modified radiation is detected along a line substantially orthogonal to the object direction of travel. In a preferred embodiment, the radiation is ultrasonic energy and at least one ultrasonic radiation transducer (receiver) is repetitively scanned back and forth along this line in the object-modified radiation as the object moves through the illuminating beam. An electrical output from the transducer is compared with a reference signal that is coherent with the object illuminating beam to generate holographic information of the object in the form of an electrical analog signal. This holographic information electrical signal is utilized to form a hologram from which an optical image of the object may be reconstructed. Any aberrations present in the optical reconstructed image are substantially reduced by illuminating the object with a collimated ultrasonic radiation beam.
Inventors
- 👤 Bernard P Hildebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:17
CPC Classifications
G; G03; G03H; G03H3/00; G03H1/00; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
103 words
A method of obtaining holographic information of an object moving relative to its surroundings, comprising the steps of: generating a coherent radiation object illuminating beam that is stationary relative to the surroundings, said beam being positioned for the object to move therethrough thereby to generate object-modified radiation, detecting said object-modified only along a substantially straight line which is stationary relative to the surroundings and oriented substantially orthogonal to said object travel direction, and comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating radiation, whereby holographic information of the object is obtained.
Claim 2
Independent Claim
103 words
A method of obtaining holographic information of an object moving relative to its surroundings, comprising the steps of: generating a coherent radiation object illuminating beam that is stationary relative to the surroundings, said beam being positioned for the object to move therethrough thereby to generate object-modified radiation, detecting said object-modified only along a substantially straight line which is stationary relative to the surroundings and oriented substantially orthogonal to said object travel direction, and comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating radiation, whereby holographic information of the object is obtained.
Claim 3
Dependent Claim
31 words
The method according to claim 1 wherein the step of detecting said object-modified radiation along a line includes repetitively scanning at least one substantially point radiation receiver back-and-forth along said line.
Claim 4
Dependent Claim
31 words
The method according to claim 1 wherein the step of illuminating said object includes placing a plurality of sources along a line that is substantially parallel to said defined detecting line.
Claim 5
Dependent Claim
23 words
A method according to claim 1 wherein the step of generating a coherent object illumination beam includes generating a substantially collimated radiation beam.
Claim 6
Dependent Claim
153 words
In a method of obtaining holographic information of an object moving relative to its surroundings through a coherent non-collimated illuminating beam that is stationary relative to the surroundings thereby to generate object-modified radiation, detecting the object-modified radiation only along a substantially straight line which is stationary relative to the surroundings and orientated substantially orthogonal to the direction of movement of the object, comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating beam to obtain holographic information, and recording the holographic information to form a hologram, the improvement of reconstructing a non-astigmatic image of the object comprising the steps of: illuminating the hologram with light to produce at least one astigmatic image carrying diffracted wavefront, and positioning optics for correcting astigmatism in the path of said at least one image carrying diffracted wavefront, whereby a non-astigmatic image of the object is formed.
Claim 7
Dependent Claim
153 words
In a method of obtaining holographic information of an object moving relative to its surroundings through a coherent non-collimated illuminating beam that is stationary relative to the surroundings thereby to generate object-modified radiation, detecting the object-modified radiation only along a substantially straight line which is stationary relative to the surroundings and orientated substantially orthogonal to the direction of movement of the object, comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating beam to obtain holographic information, and recording the holographic information to form a hologram, the improvement of reconstructing a non-astigmatic image of the object comprising the steps of: illuminating the hologram with light to produce at least one astigmatic image carrying diffracted wavefront, and positioning optics for correcting astigmatism in the path of said at least one image carrying diffracted wavefront, whereby a non-astigmatic image of the object is formed.
Claim 8
Independent Claim
118 words
A method of obtaining holographic information of a moving object, comprising the steps of: moving an object along a path of travel relative to its surroundings, directing at the path of travel an object illuminating beam of coherent radiation that is stationary relative to the surroundings, said beam being positioned for the object to move therethrough thereby to generate object-modified radiation, detecting said object-modified radiation only along a substantially straight line which is stationary relative to the surroundings and orientated substantially orthogonal to the path of travel of said object, and comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating radiation whereby holographic information is obtained.
Claim 9
Independent Claim
118 words
A method of obtaining holographic information of a moving object, comprising the steps of: moving an object along a path of travel relative to its surroundings, directing at the path of travel an object illuminating beam of coherent radiation that is stationary relative to the surroundings, said beam being positioned for the object to move therethrough thereby to generate object-modified radiation, detecting said object-modified radiation only along a substantially straight line which is stationary relative to the surroundings and orientated substantially orthogonal to the path of travel of said object, and comparing the detected object-modified radiation with the phase and intensity of a reference waveform that is coherent with the object illuminating radiation whereby holographic information is obtained.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |