Patent US3723012A successfully refreshed from Google Patents.
US3723012A
Expired / Lapsed
US
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Holographic alignment system
Assignee: Siemens AG
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Filing: 1971-04-05
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Granted: 1973-03-27
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Expires: 1991-04-05
Abstract
Abstract A method and apparatus for repositioning a body such as a diffuser body, hologram film or a body rigidly attached thereto in a previous position in a system characterized by making or exposing a hologram by use of reference wave and a wave coming from an object with each wave being of coherent radiation with a diffuser interposed in the path of one of the waves. The exposed hologram film is developed and repositioned in the system. Then either a wave from the object or the reference wave is projected on the hologram to reconstruct the other wave and the diffuser is located in the path of the same one wave to produce direct and diffused radiation. The intensity of the direct radiation of the reconstructed wave is measured to obtain a maximum measurement for the intensity of the direct radiation which will occur when the body is in the previously selected position. The body may be the diffuser and have a surface which will diffusely disperse the wave into direct and diffused radiation.
Inventors
- 👤 E Storck
- 👤 J Ost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:38
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/0005; G03H2001/0033; G03H2001/0083; G03H1/04; G03H1/0402; G03H2001/0413; G03H2223/00; G03H2223/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
287 words
A method for repositioning a body into its former position after being disoriented therefrom comprising the sTeps of: providing means for supporting a hologram film and means for diffusing a wave of coherent radiation, one of the two means having a body rigidly connected thereto; providing an object wave of coherent radiation and a reference wave of coherent radiation; exposing the hologram film by simultaneously projecting both said object and reference waves onto one side of the film with one of the two waves being diffused by the diffusing means prior to the impinging onto the one side of the film; developing of the exposed film, and then resupporting the developed film on the means for supporting the film with the means for diffusing remaining at approximately the same position with respect to the means for supporting the film and with the one side of the film in approximately the same position with respect to the means for diffusing as during exposing of the film; projecting one wave selected from the object wave and the reference wave onto the developed hologram film to reconstruct the other wave while maintaining the diffusing means to diffuse the one wave which was diffused during exposing of the hologram; measuring at only one location only the intensity of the reconstructed wave; and adjusting the position of one means selected from the diffusing means and the means for supporting the film with respect to the other of the two means to obtain a maximum intensity of the reconstructed wave whereby when a maximum intensity is measured, said body is repositioned in the position with respect to the two means as the position that said body had during the exposing of the hologram.
Claim 2
Independent Claim
287 words
A method for repositioning a body into its former position after being disoriented therefrom comprising the sTeps of: providing means for supporting a hologram film and means for diffusing a wave of coherent radiation, one of the two means having a body rigidly connected thereto; providing an object wave of coherent radiation and a reference wave of coherent radiation; exposing the hologram film by simultaneously projecting both said object and reference waves onto one side of the film with one of the two waves being diffused by the diffusing means prior to the impinging onto the one side of the film; developing of the exposed film, and then resupporting the developed film on the means for supporting the film with the means for diffusing remaining at approximately the same position with respect to the means for supporting the film and with the one side of the film in approximately the same position with respect to the means for diffusing as during exposing of the film; projecting one wave selected from the object wave and the reference wave onto the developed hologram film to reconstruct the other wave while maintaining the diffusing means to diffuse the one wave which was diffused during exposing of the hologram; measuring at only one location only the intensity of the reconstructed wave; and adjusting the position of one means selected from the diffusing means and the means for supporting the film with respect to the other of the two means to obtain a maximum intensity of the reconstructed wave whereby when a maximum intensity is measured, said body is repositioned in the position with respect to the two means as the position that said body had during the exposing of the hologram.
Claim 3
Dependent Claim
62 words
A method according to claim 1, wherein the means having the body rigidly connected thereto is the diffusing means and wherein the body has a diffusingly reflecting surface to act as the diffusing means, wherein said body is adjusted with respect to the developed film to reposition the body to its previous position with respect to the means supporting the developed film.
Claim 4
Dependent Claim
47 words
A method according to claim 1, wherein the object wave is diffused prior to projection on the hologram film during the exposing thereof and wherein the wave projected on the developed film is the object wave which has been diffused prior to projection on the developed film.
Claim 5
Dependent Claim
71 words
A method according to claim 1, wherein the object wave is diffused prior to projection on the hologram film during exposing thereof, and wherein the one wave projected on the developed film is the reference wave which is projected on the hologram film to reconstruct the object wave which is then diffused by the diffusing means into direct and diffused radiation prior to measuring of the intensity of the object wave.
Claim 6
Dependent Claim
72 words
A method according to claim 4, wherein the measuring is the measuring of the intensity of the direct radiation of the object wave and which further includes the step of focusing the direct and diffused radiation and filtering out the diffused radiation prior to measuring the intensity of the direct radiation so that the measuring of the intensity of the radiation produces a measure of the intensity of the focused direct radiation.
Claim 7
Independent Claim
237 words
An apparatus for relocating a body in a previous position by using a hologram made with an object wave and a reference wave of coherent radiation projected on one surface thereof with one of the two waves being diffused and the body was in the previous position, the apparatus consisting of: means for diffusing the one wave of coherent radiation into nondiffused and diffused radiation; means for supporting the hologram film with one surface substantially in the same position with respect to the means for diffusing as during the making of the hologram film; a body rigidly connected with one of the two means; means for supporting one of the above mentioned two means and enabling movement of said one means in space with respect to the other of the two means; means for projecting a selected wave of the two waves of coherent radiation on the exposed holoGram film to reconstruct the other wave of the two waves of coherent radiation, said means for diffusing producing non-diffused and diffused radiation in the one wave as during the exposing of the hologram; means for detecting and measuring only the intensity of the reconstructed wave at only one location; and means for moving said one means to a position to increase the intensity of the radiation of the reconstructed wave to a maximum intensity whereby when a maximum intensity is obtained, the body is in its previous position.
Claim 8
Independent Claim
237 words
An apparatus for relocating a body in a previous position by using a hologram made with an object wave and a reference wave of coherent radiation projected on one surface thereof with one of the two waves being diffused and the body was in the previous position, the apparatus consisting of: means for diffusing the one wave of coherent radiation into nondiffused and diffused radiation; means for supporting the hologram film with one surface substantially in the same position with respect to the means for diffusing as during the making of the hologram film; a body rigidly connected with one of the two means; means for supporting one of the above mentioned two means and enabling movement of said one means in space with respect to the other of the two means; means for projecting a selected wave of the two waves of coherent radiation on the exposed holoGram film to reconstruct the other wave of the two waves of coherent radiation, said means for diffusing producing non-diffused and diffused radiation in the one wave as during the exposing of the hologram; means for detecting and measuring only the intensity of the reconstructed wave at only one location; and means for moving said one means to a position to increase the intensity of the radiation of the reconstructed wave to a maximum intensity whereby when a maximum intensity is obtained, the body is in its previous position.
Claim 9
Dependent Claim
106 words
An apparatus according to claim 6, wherein the means for projecting a selected wave projects the wave which is free of diffusion so that the reconstructed wave is directed at said diffusing means, and wherein the means for detecting and measuring includes means for focusing the nondiffused and diffused radiation of the reconstructed wave and means for filtering out the diffused radiation prior to being received by the means for detecting and measuring the intensity of the radiation of the reconstructed wave so that a background noise created by the diffused radiation is reduced to a minimum as the intensity of the nondiffused radiation is measured.
Claim 10
Dependent Claim
69 words
An apparatus according to claim 7, wherein the means for detecting and measuring the intensity of the nondiffused radiation includes means for providing a proportional error signal for the rate of change in the intensity measurement to obtain a maximum intensity measurement and wherein said means for moving includes means utilizing the error signal for moving said one means so that the proportional error signal approaches a minimum value.
Claim 11
Dependent Claim
46 words
A device according to claim 7, wherein the means for focusing and filtering include a pair of focusing lenses arranged to have a common focal point therebetween, and a partition having an aperture positioned with the aperture located at the common focal point of the lenses.
Claim 12
Dependent Claim
71 words
An apparatus according to claim 6, wherein the means for detecting and measuring the intensity of the radiation of the reconstructed wave includes means providing a proportional error signal for the rate of change in the intensity measurement to obtain a maximum intensity measurement and wherein the means for moving includes means utilizing the error signal for moving said one means so that the proportional error signal approaches a minimum value.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |