US3572936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stroboscopic interferometric holography
Assignee: United States Department of the Navy
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Filing: 1969-04-14
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Granted: 1971-03-30
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Expires: 1989-04-14
Abstract
Abstract Means and method for stroboscopic interferometric holography consisting of passing the laser beam which is used to illuminate the object through a Pockels cell and pulsing the Pockels cell by means of a pulse which is derived from, and therefore synchronized with, a sine wave generator whose output is used to vibrate said object. The pulse duration and its phase position with respect to the sine wave are variable. A double-image hologram is made consisting of a stroboscopic (pulsed) exposure at the positive peak of the sine wave and at either the zero value or the negative peak, resulting in a hologram of the object including a gross interference fringe pattern. The hologram can then be converted to a conventional photograph. A second technique includes rotation of the object through a small angle before the second image is made.
Inventors
- 👤 Cameron D Johnson
- 👤 Gerald M Mayer
- 👤 Peter Shajenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:22
CPC Classifications
G; G01; G01B; G01B9/00; G01B9/02; G01B9/021; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S359/902
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
84 words
A holographic technique comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; producing a hologram of the stroboscopically illuminated vibrating object; rotating said objecT; and producing another hologram of said object in its rotated position, said other hologram being produced as a double-image with the first hologram.
Claim 2
Dependent Claim
84 words
A holographic technique comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; producing a hologram of the stroboscopically illuminated vibrating object; rotating said objecT; and producing another hologram of said object in its rotated position, said other hologram being produced as a double-image with the first hologram.
Claim 3
Dependent Claim
84 words
A holographic technique comprising the steps of: stroboscopically illuminating an object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; producing a hologram of the stroboscopically illuminated vibrating object; rotating said object; vibrating said object in accordance with said repetitive wave; and producing another hologram of said object in its rotated position, said other holgram being produced as a double-image with the first hologram.
Claim 4
Dependent Claim
84 words
A holographic technique comprising the steps of: stroboscopically illuminating an object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; producing a hologram of the stroboscopically illuminated vibrating object; rotating said object; vibrating said object in accordance with said repetitive wave; and producing another hologram of said object in its rotated position, said other holgram being produced as a double-image with the first hologram.
Claim 5
Dependent Claim
19 words
A technique as in claim 1, including the step of making said other hologram with said object at rest.
Claim 6
Dependent Claim
83 words
A technique for stroboscopic interferometric holography comprising the steps of: producing a hologram of an object at rest; rotating said object in a clockwise direction; vibrating said object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; and producing a second hologram of said object, first and second holograms constituting a double-image hologram.
Claim 7
Dependent Claim
83 words
A technique for stroboscopic interferometric holography comprising the steps of: producing a hologram of an object at rest; rotating said object in a clockwise direction; vibrating said object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; and producing a second hologram of said object, first and second holograms constituting a double-image hologram.
Claim 8
Dependent Claim
83 words
A technique for stroboscopic interferometric holography comprising the steps of: producing a hologram of an object at rest; rotating said object in a counterclockwise direction; vibrating said object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; and producing a second hologram of said object, first and second holograms constituting a double-image hologram.
Claim 9
Dependent Claim
83 words
A technique for stroboscopic interferometric holography comprising the steps of: producing a hologram of an object at rest; rotating said object in a counterclockwise direction; vibrating said object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition and at the same point in each repetition; and producing a second hologram of said object, first and second holograms constituting a double-image hologram.
Claim 10
Dependent Claim
97 words
A technique for stroboscopic interferometric holography comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition at the same point in each repetition; producing a hologram of said stroboscopically illuminated object; rotating said object in a clockwise direction; removing the vibrations from said object to permit it to come to rest; and producing a second hologram of said object at rest, first and second holograms constituting a double-image hologram.
Claim 11
Dependent Claim
97 words
A technique for stroboscopic interferometric holography comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition at the same point in each repetition; producing a hologram of said stroboscopically illuminated object; rotating said object in a clockwise direction; removing the vibrations from said object to permit it to come to rest; and producing a second hologram of said object at rest, first and second holograms constituting a double-image hologram.
Claim 12
Dependent Claim
97 words
A technique for stroboscopic interferometric holography comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition at the same point in each repetition; producing a hologram of said stroboscopically illuminated object; rotating said object in a counterclockwise direction; removing the vibrations from said object to permit it to come to rest; and producing a second hologram of said object at rest, first and second holograms constituting a double-image hologram.
Claim 13
Dependent Claim
97 words
A technique for stroboscopic interferometric holography comprising the steps of: vibrating an object in accordance with a repetitive wave; stroboscopically illuminating said object with coherent, monochromatic light for a plurality of repetitions of said repetitive wave; a stroboscopic light pulse occurring once per repetition at the same point in each repetition; producing a hologram of said stroboscopically illuminated object; rotating said object in a counterclockwise direction; removing the vibrations from said object to permit it to come to rest; and producing a second hologram of said object at rest, first and second holograms constituting a double-image hologram.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |