US5293259A
Expired / Lapsed
US
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Integrated rainbow hologram
Assignee: University of Alabama
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Filing: 1992-12-07
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Granted: 1994-03-08
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Expires: 2012-12-07
Abstract
Abstract A holographic display and method for displaying hologram are disclosed. The method and apparatus provides a compact display arrangement in which the light source for illuminating the display is integral with the display, or in other words, an external light source is not necessary. The hologram utilized in the display is formed as a rainbow hologram, with a converging reference beam utilized in forming the diffraction grating upon the holographic plate. The display includes a pair of spaced transparent glass sheets, with the light source disposed between the glass sheets. The holographic plate formed with the converging reference beam is then mounted upon one of the glass sheets, with the light source illuminating the holographic plate with diverging illumination light. A mirror is associated with each of the transparent glass sheets at a location adjacent to the light source, with the reflective surfaces of the mirrors facing each other. Thus, the light from the light source is reflected by the mirrors and the transparent sheets, and impinges upon the holographic plate to provide the diverging illumination light. The method and apparatus provides a compact integrated holographic display.
Inventors
- 👤 Qiang Huang
- 👤 John A. Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:59
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/22; G03H1/24; G03H1/04; G03H1/0402; G03H1/0408; G03H1/26; G03H1/2645; G03H1/265; G03H2001/0413; G03H1/0465; G03H2001/0473; G03H1/2202; G03H2001/2223; G03H1/2249; G03H2001/2263; G03H2001/2268; G03H2222/00; G03H2222/10; G03H2222/17; G03H2222/50; G03H2222/54; G03H2227/00; G03H2227/05; G03H2227/06
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
82 words
A holographic display comprising: first and second spaced transparent sheets; a holographic plate mounted upon one of said sheets; first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other and wherein said first mirror is disposed on the same sheet upon which the holographic plate is mounted and is larger than said second mirror; and a light source disposed between said transparent sheets.
Claim 2
Dependent Claim
82 words
A holographic display comprising: first and second spaced transparent sheets; a holographic plate mounted upon one of said sheets; first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other and wherein said first mirror is disposed on the same sheet upon which the holographic plate is mounted and is larger than said second mirror; and a light source disposed between said transparent sheets.
Claim 3
Dependent Claim
15 words
The display of claim 1, wherein said mirrors are disposed adjacent to said light source.
Claim 4
Dependent Claim
14 words
The display of claim 1, wherein said light source is a white light source.
Claim 5
Dependent Claim
13 words
The display of claim 3, wherein said light source includes a halogen lamp.
Claim 6
Dependent Claim
18 words
The display of claim 1, wherein said light source provides a diverging illumination light to the holographic plate.
Claim 7
Dependent Claim
15 words
The display of claim 5, wherein said holographic plate includes a rainbow hologram formed therein.
Claim 8
Dependent Claim
18 words
The display of claim 6, wherein said holographic plate includes a hologram formed utilizing a converging reference light.
Claim 9
Dependent Claim
23 words
The display of claim 1, further including a plurality of light sources at different locations between the transparent sheets for illuminating different images.
Claim 10
Dependent Claim
33 words
The display of claim 8, wherein said holographic plate includes a plurality of holograms for forming a plurality of images, and said plurality of light sources can successively illuminate the plurality of images.
Claim 11
Dependent Claim
31 words
The display of claim 8, wherein said display includes a plurality of holographic plates which are illuminates to form images by different respective light sources of said plurality of light sources.
Claim 12
Independent Claim
97 words
A method for providing holographic display comprising; providing first and second spaced transparent sheets; mounting a holographic plate upon one of said sheets; providing first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other, said first mirror being larger than said second mirror, said first mirror being disposed on the same sheet upon which said holographic plate is mounted; and providing a light source disposed between said transparent sheets for providing an illuminating light for the holographic plate.
Claim 13
Independent Claim
97 words
A method for providing holographic display comprising; providing first and second spaced transparent sheets; mounting a holographic plate upon one of said sheets; providing first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other, said first mirror being larger than said second mirror, said first mirror being disposed on the same sheet upon which said holographic plate is mounted; and providing a light source disposed between said transparent sheets for providing an illuminating light for the holographic plate.
Claim 14
Dependent Claim
26 words
The method of claim 11, wherein the step of providing a light source includes providing a light source which illuminates the holographic plate with diverging light.
Claim 15
Dependent Claim
55 words
The method of claim 11, wherein the step of providing a holographic plate includes forming a rainbow hologram utilizing a converging reference light, and wherein the light source illuminates the holographic plate with diverging light which impinges upon the holographic plate from a side opposite to that upon which the converging reference light is directed.
Claim 16
Independent Claim
111 words
A method for providing a holographic display having a self-contained light source comprising; forming a hologram on a holographic plate utilizing a converging reference light; mounting said holographic plate upon a first transparent sheet; providing a second transparent sheet spaced from said first transparent sheet; disposing first and second mirrors over respective portions of each of said first and second transparent sheets such that reflective surfaces of said mirrors are facing each other, said first mirror disposed on said first transparent sheet being larger than said second mirror; and providing an illuminating light source between said first and second transparent sheets such that said light source provides a diverging illumination light.
Claim 17
Independent Claim
111 words
A method for providing a holographic display having a self-contained light source comprising; forming a hologram on a holographic plate utilizing a converging reference light; mounting said holographic plate upon a first transparent sheet; providing a second transparent sheet spaced from said first transparent sheet; disposing first and second mirrors over respective portions of each of said first and second transparent sheets such that reflective surfaces of said mirrors are facing each other, said first mirror disposed on said first transparent sheet being larger than said second mirror; and providing an illuminating light source between said first and second transparent sheets such that said light source provides a diverging illumination light.
Claim 18
Dependent Claim
20 words
The method of claim 14, further including disposing said first and second transparent sheets in parallel relation to each other.
Claim 19
Dependent Claim
25 words
The method of claim 14, wherein the step of utilizing a converging reference light includes providing a convex lens to form the converging reference light.
Claim 20
Dependent Claim
73 words
A holographic display comprising; first and second spaced transparent sheets; a holographic plate mounted upon one of said sheets; first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other, said mirrors being aluminum mirrors such that the mirrors assist in dissipating heat from the display; and a light source disposed between said transparent sheets.
Claim 21
Dependent Claim
73 words
A holographic display comprising; first and second spaced transparent sheets; a holographic plate mounted upon one of said sheets; first and second mirrors respectively overlying portions of said first and second spaced transparent sheets such that reflective surfaces of the first and second mirrors are facing each other, said mirrors being aluminum mirrors such that the mirrors assist in dissipating heat from the display; and a light source disposed between said transparent sheets.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-07 | 1997-09-06 | 1998-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-07 | 2001-09-06 | 2002-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-07 | 2005-09-06 | 2006-03-08 | $7700.00 | Window Closed / Lapsed |