US3807828A
Expired / Lapsed
US
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Holographic systems
Assignee: Individual
•
Filing: 1971-02-02
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Granted: 1974-04-30
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Expires: 1991-02-02
Abstract
Abstract This invention is concerned with methods and apparatus for recording multiple exposure holograms on a film record and displaying reconstructed images of the separately recorded subjects. Means are provided, by the use of simultaneous application of multiple different reference beams, to reconstruct a plurality of images, each of which can be separately controlled in intensity. Also, the recording of the separate subjects can be controlled in a predetermined time sequence, and the corresponding reconstruction of the plurality of images can be controlled in the same or different timing sequence. Means are provided for recording the separate subjects by keeping the subject and reference beam in fixed directions and rotating the plane of the recording film.
Inventors
- 👤 E Johnson
- 👤 D Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:03
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/26; G11; G11B; G11B7/00; G11B7/004; G11B7/0065; G11B7/002; G11B7/003
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
131 words
In an holographic system of preparing and utilizing a photographic hologram wherein a record medium is given a first simultaneous exposure to a first object beam and a first reference beam having a first direction, and is given a second simultaneous exposure to a second object beam and a second reference beam having a second direction, all said beams being of coherent radiation of known frequency, the improvement comprising means for incrementally advancing the record medium between said first and second exposures by a distance d corresponding to a known fraction of the longitudinal dimension of the exposed area, and means for utilizing reconstructed images of said prepared hologram including means for simultaneously exposing said record medium to said first and second reference beams on being advanced the incremental distance d.
Claim 2
Dependent Claim
131 words
In an holographic system of preparing and utilizing a photographic hologram wherein a record medium is given a first simultaneous exposure to a first object beam and a first reference beam having a first direction, and is given a second simultaneous exposure to a second object beam and a second reference beam having a second direction, all said beams being of coherent radiation of known frequency, the improvement comprising means for incrementally advancing the record medium between said first and second exposures by a distance d corresponding to a known fraction of the longitudinal dimension of the exposed area, and means for utilizing reconstructed images of said prepared hologram including means for simultaneously exposing said record medium to said first and second reference beams on being advanced the incremental distance d.
Claim 3
Dependent Claim
49 words
The holographic system of claim 1 including means for changing at least one parameter of said first reference beam to form a second reference beam, said parameter being effective in producing and utilizing holograms, said means for changing being responsive to the means for incrementally advancing the record medium.
Claim 4
Dependent Claim
50 words
The holographic system of claim 1 wherein the fraction of the longitudinal dimension of the exposed area of the record medium is a distance d, where d D/K, where D is the longitudinal dimension of the area of the first exposure and K has a value of at least 2.
Claim 5
Dependent Claim
42 words
The holographic system of claim 3, wherein the distance is kd, where k is a variable affording an index for a series of holograms, selected hologram in such series, and a selected image in a group of images in such selected hologram.
Claim 6
Dependent Claim
26 words
The holographic system of claim 1 including means responsive to the incremental advancement of the record medium to control the subsequent exposure of the prepared hologram.
Claim 7
Dependent Claim
19 words
The holographic system of claim 1, wherein the means for exposing the record to said beams includes stroboscopic means.
Claim 8
Dependent Claim
26 words
The holographic system of claim 2 including means for exposing the record medium to a plurality of reference beams to record a plurality of images thereon.
Claim 9
Dependent Claim
45 words
The holographic system of claim 7 including means for exposing the prepared hologram to a plurality of reference beams to simultaneously reconstruct a plurality of images thereon, and means for continuously advancing the record medium a distance d to sequentially reconstruct successive pluralities of images.
Claim 10
Dependent Claim
40 words
The holographic system of claim 8 including means for relatively controlling the intensities of the said beams during the subsequent exposure of the prepared hologram thereby varying the relative intensities of the reconstructed individual images comprising the plurality of images.
Claim 11
Dependent Claim
41 words
The holographic system of claim 1 iNcluding means for incrementally advancing the record medium between exposures a minor fraction of the dimension of the exposed area in a continuous sequence of partially superimposed areas, both in recording and in image reconstruction.
Claim 12
Dependent Claim
51 words
The holographic system of claim 1 wherein the distance d is equal to D/n, where D is the longitudinal dimension of the exposed area, and n is the number of partially superimposed images, n having a value of at least 2 and generally a value of 5 to 10, or more.
Claim 13
Dependent Claim
49 words
The holographic system of claim 1 wherein said prepared holograms comprise a photographic hologram series including a first exposure area with at least one holographic image thereon and a second exposure area overlapping a known increment of said first exposure area and having at least one holographic image thereon.
Claim 14
Dependent Claim
45 words
The holographic system of claim 1 in which the prepared hologram comprises a photographic hologram series wherein the incremental distance d equals D/k, where D is the longitudinal dimension of the area of the first exposure and K has a value of at least 2.
Claim 15
Dependent Claim
43 words
The holographic system of claim 13 wherein the incremental distance is kd, where k is a variable affording an index for the hologram series, a selected hologram in such series, and a selected image in a group of images in such selected hologram.
References Cited (Backward Citations)
US3560071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |