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US3791275A
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Multiple image formation through self-imaging
Assignee: Xerox Corp
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Filing: 1972-10-17
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Granted: 1974-02-12
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Expires: 1992-10-17
Abstract
Abstract The present invention relates to the formation of multiple images by self-imaging. Individual points of an incoherently illuminated object serve as sources to achieve self-images of a pinhole array. By using an incoherent, monochromatic light source to illuminate a single object, a plurality of pinholes in a periodic structure allows for the production of sharpened images at defined locations from the structure. At certain defined locations, Fresnel images are formed which are true images of the object numbering higher than said plurality of pinholes.
Inventors
- 👤 O Bryngdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:25
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/42; G02B27/4205; G03; G03B; G03B15/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
60 words
An optical system for the formation of multiple images of a single object comprising means for producing an incoherent, monochromatic irradiance from a single object and a planar structure having a periodic array of apertures responsive to the irradiance from said object to form multiple, identical images of said object in various Image planes at predetermined distances from said structure.
Claim 2
Dependent Claim
60 words
An optical system for the formation of multiple images of a single object comprising means for producing an incoherent, monochromatic irradiance from a single object and a planar structure having a periodic array of apertures responsive to the irradiance from said object to form multiple, identical images of said object in various Image planes at predetermined distances from said structure.
Claim 3
Dependent Claim
30 words
The system as claimed in claim 1, wherein certain of said image planes are comprised of Fourier images and the remainder of said image planes are comprised of Fresnel images.
Claim 4
Dependent Claim
37 words
The system as claimed in claim 2, wherein said Fresnel images are optically true images of said object and the images in each of said image planes number higher than the number of apertures in said structure.
Claim 5
Dependent Claim
17 words
The system as claimed in claim 3, wherein said array of apertures comprises at least three pinholes.
Claim 6
Dependent Claim
29 words
The system as claimed in claim 4, wherein said irradiance means comprises an incoherent light source in convolution with said object and filtering means for rendering said irradiance monochromatic.
Claim 7
Dependent Claim
25 words
The system as claimed in claim 4, wherein said irradiance means comprises an Ar laser and a rotating ground glass in convolution with said object.
Claim 8
Dependent Claim
73 words
A camera for forming self-images of a photographed object comprising a housing comprising at least one face optically associated with the object, said face being formed of a planar structure having a plurality of apertures in periodic relationship to one another, and means for incoherently illuminating said object and irradiating said face with an incoherent, monochromatic radiation to form self-images of said object in various image planes at predetermined distances from said face.
Claim 9
Dependent Claim
73 words
A camera for forming self-images of a photographed object comprising a housing comprising at least one face optically associated with the object, said face being formed of a planar structure having a plurality of apertures in periodic relationship to one another, and means for incoherently illuminating said object and irradiating said face with an incoherent, monochromatic radiation to form self-images of said object in various image planes at predetermined distances from said face.
Claim 10
Independent Claim
76 words
A method of forming multiple images of a single object comprising the steps of illuminating the object with incoherent, monochromatic radiation such that individual points of the object are sources of secondary radiation, positioning a planar structure which has a periodic array of apertures at a distance from said object, and irradiating said structure with the secondary radiation to form multiple, identical images of said object in various image planes at predetermined distances from said structure.
Claim 11
Independent Claim
76 words
A method of forming multiple images of a single object comprising the steps of illuminating the object with incoherent, monochromatic radiation such that individual points of the object are sources of secondary radiation, positioning a planar structure which has a periodic array of apertures at a distance from said object, and irradiating said structure with the secondary radiation to form multiple, identical images of said object in various image planes at predetermined distances from said structure.
Claim 12
Dependent Claim
30 words
The method as claimed in claim 8, wherein certain of the image planes are comprised of Fourier images and the remainder of said image planes are comprised of Fresnel images.
Claim 13
Independent Claim
88 words
A method of forming multiple images of a single object comprising the steps of illuminating the object with a source of incoherent radiation such that individual points of the object are sources of secondary radiation, positioning a planar structure which has a periodic array of apertures at a distance from said object, filtering either of said radiations to provide monochromatic secondary radiation, and irradiating said structure with the secondary radiation to form multiple, identical images of said object in various image planes at predetermined distances from said structure.
Claim 14
Independent Claim
88 words
A method of forming multiple images of a single object comprising the steps of illuminating the object with a source of incoherent radiation such that individual points of the object are sources of secondary radiation, positioning a planar structure which has a periodic array of apertures at a distance from said object, filtering either of said radiations to provide monochromatic secondary radiation, and irradiating said structure with the secondary radiation to form multiple, identical images of said object in various image planes at predetermined distances from said structure.
Claim 15
Dependent Claim
38 words
The method as claimed in claim 9, wherein the Fresnel images formed are optically true images of said object and the images in each of the image planes number higher than the number of apertures in said structure.
Claim 16
Dependent Claim
30 words
The method as claimed in claim 10, wherein certain of the image planes are comprised of Fourier images and the remainder of said image planes are comprised of Fresnel images.
References Cited (Backward Citations)
US3545854A
Cited
US3584948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |