US3717843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic system for forming images of both stationary and moving objects
Assignee: Bendix Corp
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Filing: 1970-03-06
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Granted: 1973-02-20
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Expires: 1990-03-06
Abstract
Abstract A holographic system capable of forming images of both stationary objects and objects that are moving with respect to the holographic system is described which includes means for irradiating an object with coherent, long wavelength radiation such as coherent acoustic or radio waves. The system also includes a receiving surface for receiving this radiation from the object and producing a plurality of electrical signals, each with a phase and amplitude determined by the nature of the object irradiated and equal to the phase and amplitude of the radiation received from the object at a particular position on the receiving surface. A hologram is produced from these signals by processing apparatus including gating means responsive to an electric reference signal which allows only those electric signals representing radiation received during a selected time interval to be further processed and used in forming the hologram. This time interval is selected considering the velocity of the relative movement between the object and the receiving means so that there will not be enough motion to degrade the hologram during the time interval in which signals which are actually used to form the hologram are received.
Inventors
- 👤 H Farrah
- 👤 E Marom
- 👤 R Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:53
CPC Classifications
G; G01; G01S; G01S17/00; G01S17/87; G01S15/00; G01S15/88; G01S15/89; G01S15/8906; G01S15/8965; G01S15/897; G01S17/88; G01S17/89; G03; G03H; G03H1/00; G03H1/04; G03H1/0443; G03H3/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
212 words
A holographic system capable of providing a hologram of an object when there is a relative motion between the system and object as well as when there is no such relative motion comprising: means for irradiating an object with coherent radiation capable of being converted into an oscillating electric signal; means for receiving said radiation from said object and converting said received radiation to a plurality of oscillating electric signals representative of said received radiation; means for simultaneously selecting a portion of each of said electric signals produced in one time interval that is sufficiently short so that there will not be enough relative motion between the object and the system to degrade the hologram formed by the system; means for processing said selected signal portions to produce a sequence of signals representing a hologram; means for displaying a holographic pattern on a surface; and control means for providing control signals to control the order in which said processed electric signals are supplied to said display means, said control means also supplying control signals to said display device to control the operation of said display device so that each of said processed signals supplied to said display means provides a portion of a holographic pattern at an appropriate position on said surface.
Claim 2
Dependent Claim
212 words
A holographic system capable of providing a hologram of an object when there is a relative motion between the system and object as well as when there is no such relative motion comprising: means for irradiating an object with coherent radiation capable of being converted into an oscillating electric signal; means for receiving said radiation from said object and converting said received radiation to a plurality of oscillating electric signals representative of said received radiation; means for simultaneously selecting a portion of each of said electric signals produced in one time interval that is sufficiently short so that there will not be enough relative motion between the object and the system to degrade the hologram formed by the system; means for processing said selected signal portions to produce a sequence of signals representing a hologram; means for displaying a holographic pattern on a surface; and control means for providing control signals to control the order in which said processed electric signals are supplied to said display means, said control means also supplying control signals to said display device to control the operation of said display device so that each of said processed signals supplied to said display means provides a portion of a holographic pattern at an appropriate position on said surface.
Claim 3
Dependent Claim
212 words
A holographic system capable of providing a hologram of an object when there is a relative motion between the system and object as well as when there is no such relative motion comprising: means for irradiating an object with coherent radiation capable of being converted into an oscillating electric signal; means for receiving said radiation from said object and converting said received radiation to a plurality of oscillating electric signals representative of said received radiation; means for simultaneously selecting a portion of each of said electric signals produced in one time interval that is sufficiently short so that there will not be enough relative motion between the object and the system to degrade the hologram formed by the system; means for processing said selected signal portions to produce a sequence of signals representing a hologram; means for displaying a holographic pattern on a surface; and control means for providing control signals to control the order in which said processed electric signals are supplied to said display means, said control means also supplying control signals to said display device to control the operation of said display device so that each of said processed signals supplied to said display means provides a portion of a holographic pattern at an appropriate position on said surface.
Claim 4
Dependent Claim
212 words
A holographic system capable of providing a hologram of an object when there is a relative motion between the system and object as well as when there is no such relative motion comprising: means for irradiating an object with coherent radiation capable of being converted into an oscillating electric signal; means for receiving said radiation from said object and converting said received radiation to a plurality of oscillating electric signals representative of said received radiation; means for simultaneously selecting a portion of each of said electric signals produced in one time interval that is sufficiently short so that there will not be enough relative motion between the object and the system to degrade the hologram formed by the system; means for processing said selected signal portions to produce a sequence of signals representing a hologram; means for displaying a holographic pattern on a surface; and control means for providing control signals to control the order in which said processed electric signals are supplied to said display means, said control means also supplying control signals to said display device to control the operation of said display device so that each of said processed signals supplied to said display means provides a portion of a holographic pattern at an appropriate position on said surface.
Claim 5
Dependent Claim
58 words
The holographic system set forth in claim 1 further including means for automatically activating the operation of said irradiating and selecting means upon the completion of the transmission of all said processed signals to said display means to thereby initiate the formation of another hologram, the formation of a series of holograms providing a real time holographic display.
Claim 6
Dependent Claim
184 words
In a holographic system for providing images of objects that are moving relative to the holographic system as well as of stationary objects including means for transmitting radiation having a predetermined carrier frequency to an object to be imaged, means for receiving said radiation from the object, and transducer means for producing a plurality of oscillating electric signals each having a phase and amplitude representing the phase and amplitude of radiation received from said object at a particular position, and means for using the oscillating electric signals to form a holographic image, the improvement comprising: gating means for selecting and transmitting signals produced by the transducer means in a predetermined time interval to be used in forming a holographic image; said gating means being responsive to an oscillating electric control signal having a carrier frequency substantially equal to the carrier frequency of the radiation transmitted to the object, and being constructed to open and close at a frequency substantially equal to the carrier frequency of said control signal when said control signal is received, and to remain closed when no control signal is received.
Claim 7
Dependent Claim
184 words
In a holographic system for providing images of objects that are moving relative to the holographic system as well as of stationary objects including means for transmitting radiation having a predetermined carrier frequency to an object to be imaged, means for receiving said radiation from the object, and transducer means for producing a plurality of oscillating electric signals each having a phase and amplitude representing the phase and amplitude of radiation received from said object at a particular position, and means for using the oscillating electric signals to form a holographic image, the improvement comprising: gating means for selecting and transmitting signals produced by the transducer means in a predetermined time interval to be used in forming a holographic image; said gating means being responsive to an oscillating electric control signal having a carrier frequency substantially equal to the carrier frequency of the radiation transmitted to the object, and being constructed to open and close at a frequency substantially equal to the carrier frequency of said control signal when said control signal is received, and to remain closed when no control signal is received.
Claim 8
Dependent Claim
67 words
The system set forth in claim 3 in which said gating means comprises transistor switching apparatus constructed so that each transmitted signal output from said transistor switching apparatus has a componeNt with an amplitude proportional to the product of the amplitude of one of the signals received from said transducer means and the cosine of the phase difference between said one received signal and said control signal.
Claim 9
Dependent Claim
53 words
The holographic system set forth in claim 4 further including integrator means for receiving said selected signals from said transistor switching means, said integrating means being constructed to filter unwanted components from said signals received from said transistor switching means, to integrate the unfiltered signal components, and to store said integrated signal components.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |