US3743376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holographic beam coupler
Assignee: RCA Corp
•
Filing: 1971-08-25
•
Granted: 1973-07-03
•
Expires: 1991-08-25
Abstract
Abstract A plurality of separate angularly-disposed beams of wave energy, such as light, can be combined into a single composite beam of wave energy by simultaneously illuminating a holographic beam coupler with the plurality of angularly-disposed beams. The holographic beam coupler is prepared by recording each of a plurality of interference pattern components on a recording medium to form a resultant composite interference pattern on the medium. Each interference pattern component results from illuminating the recording medium with a different pair of angularly disposed beams of coherent wave energy, with the orientation and angle of incidence of one of the beams (the reference beam) of each of the plurality of pairs with respect to the medium being the same as each other and the orientation and angle of incidence of the other of the beams of each of the plurality of pairs with respect to the medium being different from each other and from that of the reference beam of each of the pairs.
Inventors
- 👤 J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/32; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
203 words
A method for combining a plurality of separate beams of wave energy into a single resultant composite beam of wave energy, said method comprising the steps of producing a first beam of wave energy at a first wavelength and directing said first beam of wave energy to a medium on which is recorded a given holographic interference pattern at a first predetermined angle of incidence with respect to said medium, simultaneously producing a second beam of wave energy at a second wavelength and directing said second beam of wave energy to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, at least one of said first and second beams varying in intensity from point to point over its cross-section in accordance with spatially-distributed information, and said given holographic interference pattern being responsive to the incidence of said first beam for deriving a first diffraction component emerging therefrom at a given angle of emergence with respect to said medium and being responsive to the incidence of said second beam for deriving a second diffraction component emerging therefrom at said given angle of emergence and in coincidence with said first diffraction component.
Claim 2
Independent Claim
203 words
A method for combining a plurality of separate beams of wave energy into a single resultant composite beam of wave energy, said method comprising the steps of producing a first beam of wave energy at a first wavelength and directing said first beam of wave energy to a medium on which is recorded a given holographic interference pattern at a first predetermined angle of incidence with respect to said medium, simultaneously producing a second beam of wave energy at a second wavelength and directing said second beam of wave energy to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, at least one of said first and second beams varying in intensity from point to point over its cross-section in accordance with spatially-distributed information, and said given holographic interference pattern being responsive to the incidence of said first beam for deriving a first diffraction component emerging therefrom at a given angle of emergence with respect to said medium and being responsive to the incidence of said second beam for deriving a second diffraction component emerging therefrom at said given angle of emergence and in coincidence with said first diffraction component.
Claim 3
Independent Claim
247 words
A method for employing three separate black and white transparencies, manifesting respectively the red, green and blue component information in a scene, to derive a single beam of light containing both the chrominance and luminance information in said scene, said method comprising the steps of simultaneously producing separate red, green and blue beams of light, spatially modulating each of said red, green and blue beams, respectively, by passing it through that one of said transparencies manifesting the color corresponding thereto, directing said spatially-modulated red beam to a medium on which is recorded a given holographic interference pattern at a first predetermined angle of incidence with respect to said medium, simultaneously directing said spatially-modulated green beam to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, simultaneously directing said spatially-modulated blue beam to said medium at a third angle of incidence with respect to said medium which is different from both said first and second predetermined angles, said given holographic interference pattern being responsive to the incidence of said red beam for deriving a first diffraction component emerging from said medium at a given angle of emergence with respect to said medium and being responsive to the incidence of said green and blue beams, respectively, for deriving second and third diffraction components, respectively, emerging from said medium at said given angle of emergence and in coincidence with said first diffraction component and with each other.
Claim 4
Independent Claim
247 words
A method for employing three separate black and white transparencies, manifesting respectively the red, green and blue component information in a scene, to derive a single beam of light containing both the chrominance and luminance information in said scene, said method comprising the steps of simultaneously producing separate red, green and blue beams of light, spatially modulating each of said red, green and blue beams, respectively, by passing it through that one of said transparencies manifesting the color corresponding thereto, directing said spatially-modulated red beam to a medium on which is recorded a given holographic interference pattern at a first predetermined angle of incidence with respect to said medium, simultaneously directing said spatially-modulated green beam to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, simultaneously directing said spatially-modulated blue beam to said medium at a third angle of incidence with respect to said medium which is different from both said first and second predetermined angles, said given holographic interference pattern being responsive to the incidence of said red beam for deriving a first diffraction component emerging from said medium at a given angle of emergence with respect to said medium and being responsive to the incidence of said green and blue beams, respectively, for deriving second and third diffraction components, respectively, emerging from said medium at said given angle of emergence and in coincidence with said first diffraction component and with each other.
Claim 5
Dependent Claim
39 words
The method defined in claim 2, wherein said first, second and third diffraction components all converge to reconstruct in the same image plane a single real image of the confined information contained in said first, second and third transparencies.
Claim 6
Independent Claim
182 words
A method for making a holographic beam coupler comprising the steps of illuminating a wave energy recording medium with a first pair of angularly disposed coherent beams of wave energy of a first given wavelength to record a first interference pattern component and illuminating the same recording medium with a second Pair of angularly disposed coherent beams of wave energy of a second given wavelength to record a superimposed second interference pattern component which with said first component forms a composite recorded interference pattern, wherein the orientation and angle of incidence with respect to said medium of one of the beams of each of said respective first and second pairs is substantially identical to each other, and wherein the orientation and angle of incidence with respect to said medium of the other of said beams of each of said respective first and second pairs is significantly different from each other and from that of said one of said beams of said first and second pairs, and wherein said one of the beams of both said first and second pairs is spatially unmodulated.
Claim 7
Independent Claim
182 words
A method for making a holographic beam coupler comprising the steps of illuminating a wave energy recording medium with a first pair of angularly disposed coherent beams of wave energy of a first given wavelength to record a first interference pattern component and illuminating the same recording medium with a second Pair of angularly disposed coherent beams of wave energy of a second given wavelength to record a superimposed second interference pattern component which with said first component forms a composite recorded interference pattern, wherein the orientation and angle of incidence with respect to said medium of one of the beams of each of said respective first and second pairs is substantially identical to each other, and wherein the orientation and angle of incidence with respect to said medium of the other of said beams of each of said respective first and second pairs is significantly different from each other and from that of said one of said beams of said first and second pairs, and wherein said one of the beams of both said first and second pairs is spatially unmodulated.
Claim 8
Dependent Claim
18 words
The method defined in claim 4, wherein said first and second given wavelengths are equal to each other.
Claim 9
Dependent Claim
18 words
The method defined in claim 4, wherein said first and second given wavelengths are different from each other.
Claim 10
Dependent Claim
22 words
The method defined in claim 4, wherein said medium is photosensitive and said first and second pairs of beams are light beams.
Claim 11
Dependent Claim
16 words
The method defined in claim 4, wherein said first and second pairs illuminate said medium sequentially.
Claim 12
Dependent Claim
255 words
Apparatus for employing three separate black and white transparencies, manifesting respectively the red, green and blue component information in a scene, to derive a single beam of light containing both the chrominance and luminance information in said scene, said apparatus comprising a medium on which is recorded a given holographic interference pattern, and illuminating means for simultaneously producing separate red, green and blue beams of light, spatially modulating each of said red, green and blue beams, respectively, by passing it through that one of said transparencies manifesting the color corresponding thereto, directing said spatially modulated red beam to said medium at a first predetermined angle of incidence with respect to said medium, while simultaneously directing said spatially modulated green beam to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, and while simultaneously directing said spatially modulated blue beam to said medium at a third angle of incidence with respect to said medium which is different from both said first and second predetermined angles, said given holographic interference pattern being responsive to the incidence of said red beam for deriving a first diffraction component emerging from said medium at a given angle of emergence with respect to said medium and being responsive to the incidence of said green and blue beams, respectively, for deriving second and third diffraction components, respectively, emerging from said medium at said given angle of emergence and in coincidence with said first diffraction component and with each other.
Claim 13
Dependent Claim
255 words
Apparatus for employing three separate black and white transparencies, manifesting respectively the red, green and blue component information in a scene, to derive a single beam of light containing both the chrominance and luminance information in said scene, said apparatus comprising a medium on which is recorded a given holographic interference pattern, and illuminating means for simultaneously producing separate red, green and blue beams of light, spatially modulating each of said red, green and blue beams, respectively, by passing it through that one of said transparencies manifesting the color corresponding thereto, directing said spatially modulated red beam to said medium at a first predetermined angle of incidence with respect to said medium, while simultaneously directing said spatially modulated green beam to said medium at a second predetermined angle of incidence with respect to said medium which is different from said first predetermined angle, and while simultaneously directing said spatially modulated blue beam to said medium at a third angle of incidence with respect to said medium which is different from both said first and second predetermined angles, said given holographic interference pattern being responsive to the incidence of said red beam for deriving a first diffraction component emerging from said medium at a given angle of emergence with respect to said medium and being responsive to the incidence of said green and blue beams, respectively, for deriving second and third diffraction components, respectively, emerging from said medium at said given angle of emergence and in coincidence with said first diffraction component and with each other.
Claim 14
Dependent Claim
185 words
Apparatus for making a holographic beam coupler comprising a wave energy recording medium, and means for illuminating said wave energy recording medium with a first pair of angularly disposed coherent beams of wave energy of a first given wavelength to record a first interference pattern component and illuminating the same recording medium with a second pair of angularly disposed coherent beams of wave energy of a second given wavelength to record a superimposed second interference pattern component which with said first component forms a composite recorded interference pattern, wherein the orientation and angle of incidence with respect to said medium of one of the beams of each of said respective first and second pairs is substantially identical to each other, and wherein the orientation and angle of incidence with respect to said medium of the other of said beams of each of said respective first and second pairs is significantly different from each other and from that of said one of said beams of said first and second pairs, wherein said one of the beams of both said first and second pairs is spatially unmodulated.
Claim 15
Dependent Claim
185 words
Apparatus for making a holographic beam coupler comprising a wave energy recording medium, and means for illuminating said wave energy recording medium with a first pair of angularly disposed coherent beams of wave energy of a first given wavelength to record a first interference pattern component and illuminating the same recording medium with a second pair of angularly disposed coherent beams of wave energy of a second given wavelength to record a superimposed second interference pattern component which with said first component forms a composite recorded interference pattern, wherein the orientation and angle of incidence with respect to said medium of one of the beams of each of said respective first and second pairs is substantially identical to each other, and wherein the orientation and angle of incidence with respect to said medium of the other of said beams of each of said respective first and second pairs is significantly different from each other and from that of said one of said beams of said first and second pairs, wherein said one of the beams of both said first and second pairs is spatially unmodulated.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |