US3582177A
Expired / Lapsed
US
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Method and device for holographically photographing and reproducing objects
Assignee: Siemens AG
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Filing: 1968-08-07
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Granted: 1971-06-01
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Expires: 1988-08-07
Abstract
Abstract Method and apparatus for holographically photographing an object and reproducing it from a hologram includes dividing either a reference beam or a reproducing beam, illuminating a hologram, respectively, when photographing or reproducing, into a given number of partial beams producing a like number of images of an object. The partial beams are actually distinct with respect to orientation of their excitation centers relative to the intersection point of the hologram with an optical axis perpendicular to the hologram surface to an extent corresponding to the mutual spatial disposition of the individual images of the photographed object in reproducing the hologram.
Inventors
- 👤 Horst Kiemle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:40
CPC Classifications
H; H10; H10P; H10P76/00; H10P76/20; H10P76/204; H10P76/2041; H10P76/2042; G; G03; G03H; G03H1/00; G03H1/26
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
172 words
System for holographically photographing an object and reproducing it from a resulting hologram comprising a hologram carrier having an optical axis disposed perpendicular thereto, means for illuminating said hologram carrier with reference light so as to produce a holographic photograph of an image of an object on said hologram carrier, and means for illuminating said holographic photograph with reproducing light for reproducing the image photographed on said hologram, at least one of said illuminating means including means for dividing a beam of the respective light into a given number of partial light beams having respective excitation centers spaced given respective distances from the point of intersection of said optical axis with the surface of said hologram carrier so as to produce a number of images of the object equal to said given number of partial light beams, said partial light beams being distinct from one another with respect to orientation of said excitation centers thereof relative to said point of intersection to an extent corresponding to mutual spatial disposition of said images.
Claim 2
Dependent Claim
172 words
System for holographically photographing an object and reproducing it from a resulting hologram comprising a hologram carrier having an optical axis disposed perpendicular thereto, means for illuminating said hologram carrier with reference light so as to produce a holographic photograph of an image of an object on said hologram carrier, and means for illuminating said holographic photograph with reproducing light for reproducing the image photographed on said hologram, at least one of said illuminating means including means for dividing a beam of the respective light into a given number of partial light beams having respective excitation centers spaced given respective distances from the point of intersection of said optical axis with the surface of said hologram carrier so as to produce a number of images of the object equal to said given number of partial light beams, said partial light beams being distinct from one another with respect to orientation of said excitation centers thereof relative to said point of intersection to an extent corresponding to mutual spatial disposition of said images.
Claim 3
Dependent Claim
36 words
Systems according to claim 1 wherein said partial light beams are comprised of a reference light beam adapted to form an image of the object in said hologram carrier in the course of a photographic operation.
Claim 4
Dependent Claim
42 words
System according to claim 1 wherein said partial light beams are comprised of a reproducing light beam adapted to form a real imagE, in the course of a reproducing operation, of an image of the object previously photographed on said hologram carrier.
Claim 5
Dependent Claim
18 words
System according to claim 1 wherein the images of the object are located above and below one another.
Claim 6
Dependent Claim
17 words
System according to claim 1 wherein the images of the object are located laterally adjacent one another.
Claim 7
Dependent Claim
22 words
System according to claim 1 wherein orientation of the excitation centers of said partial light beams is adjustable for a two-dimensional raster.
Claim 8
Dependent Claim
60 words
System according to claim 1 for contact-free projection of an image raster of a photographed object on a surface wherein the photographed object is an image of an object reduced in size by an optical system, and wherein said hologram carrier is disposed in direction of light beam extending from the object between said optical system and the image thereof.
Claim 9
Dependent Claim
49 words
System according to claim 1 wherein said partial light beams have a diverging spherical wave characteristic and, with respect to said excitation centers thereof, are arranged in a raster so that upon reproducing said hologram, an image raster corresponding to said partial light beams is disposed in a plane.
Claim 10
Dependent Claim
68 words
System according to claim 1 wherein the other of said illuminating means comprises a single light beam having an excitation center, said excitation center, the excitation centers of the respective partial light beams, and the object being photographed all being spaced the same distance from said point of intersection of said optical axis with said surface of said hologram carrier for producing minimal error in the reproduced image.
Claim 11
Dependent Claim
43 words
System according to claim 2, including an auxiliary hologram carrier disposed in the optical path of said partial reference light beams for distorting said beams in advance so as to compensate for errors in reproduction of said images in a subsequent reproducing operation.
Claim 12
Dependent Claim
22 words
System according to claim 1, wherein said one illuminating means is adapted to illuminate said hologram carrier sequentially with said partial beams.
Claim 13
Dependent Claim
87 words
Method of holographically photographing an object and reproducing it from a resulting hologram for producing a photoemulsion mask for semiconductors, which comprises locally illuminating with coherent reference light a photoemulsion layer applied to a carrier, acting as a hologram, developing the hologram, and locally illuminating the hologram with coherent reproducing light, and including dividing one of the illuminating lights into at least two partial light beams, and directing each of the partial light beams so as to produce a respective discrete illuminating structure on the photoemulsion layer.
Claim 14
Dependent Claim
87 words
Method of holographically photographing an object and reproducing it from a resulting hologram for producing a photoemulsion mask for semiconductors, which comprises locally illuminating with coherent reference light a photoemulsion layer applied to a carrier, acting as a hologram, developing the hologram, and locally illuminating the hologram with coherent reproducing light, and including dividing one of the illuminating lights into at least two partial light beams, and directing each of the partial light beams so as to produce a respective discrete illuminating structure on the photoemulsion layer.
Claim 15
Dependent Claim
55 words
Method according to claim 12, which includes disposing excitation centers of the partial light beams at locations spaced at different distances from a point of intersection of the surface of the hologram with an optical axis perpendicular thereto so that the discrete illuminating structures form a two-dimensional raster on the photoemulsion layer of the hologram.
Claim 16
Dependent Claim
43 words
Method according to claim 12, which includes producing the hologram corresponding to an image of desired mask geometry projected through a reducing optical system by placing the hologram carrier between the reducing optical system and the image produced thereby, when photographing the hologram.
Claim 17
Dependent Claim
47 words
Method according to claim 13, which includes employing partial light beams having a spherical wave characteristic, and geometrically disposing the excitation centers of the partial light beams in such a different manner that the image points finally received on the hologram are all disposed in a plane.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |