US5390436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display system
Assignee: ILLUMINATION RESEARCH GROUP Inc
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Filing: 1991-09-20
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Granted: 1995-02-21
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Expires: 2011-09-20
Abstract
Abstract An edgelit illuminated display system has a transparent medium having first and second opposing surfaces and at least one edge operable with a light source for illuminating the first and second surfaces. A matrix of dots on each of the surfaces is arranged to allow interaction of light between the surfaces. The matrix of dots on at least one of the surfaces substantially covers the entire surface for providing an even increased illumination throughout the surface, wherein when a graphic image is supported over the surface the graphic image is evenly illuminated.
Inventors
- 👤 John Ashall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0033; G02B6/0035; G02B6/004; G02B6/0043; G09; G09F; G09F13/00; G09F13/18; B; B60; B60K; B60K35/00; B60K35/60; G02B6/0058; G02B6/0061; B60K2360/00; B60K2360/20; B60K2360/33; G02B6/006; G09F2013/1804; G09F2013/1809; G09F2013/1813
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
92 words
An edgelit illuminated display system comprising: a transparent medium having first and second opposing surfaces and at leastone edge operable with a light source for illuminating the first and second surfaces; and a matrix of dots on each of the surfaces arranged to allow interaction of light between the surfaces, the matrix of dots on at least one of the surfaces substantially covering the entire surface for providing an even and increased illumination throughout the surface, wherein when a graphic image is supported over the surface, the graphic image is evenly illuminated.
Claim 2
Dependent Claim
92 words
An edgelit illuminated display system comprising: a transparent medium having first and second opposing surfaces and at leastone edge operable with a light source for illuminating the first and second surfaces; and a matrix of dots on each of the surfaces arranged to allow interaction of light between the surfaces, the matrix of dots on at least one of the surfaces substantially covering the entire surface for providing an even and increased illumination throughout the surface, wherein when a graphic image is supported over the surface, the graphic image is evenly illuminated.
Claim 3
Dependent Claim
13 words
The edgelit illuminated display system of claim 1, wherein the dots are translucent.
Claim 4
Dependent Claim
23 words
The edgelit illuminated display system of claim 1, further comprising at least one sufficiently translucent sheet having at least one light-coloured surface thereon.
Claim 5
Dependent Claim
48 words
The edgelit illuminated display system of claim 3, wherein the at least one light-coloured surface of the translucent sheet contacts the first surface of the transparent medium with the matrix of clots thereon and wherein the graphic image is formed on the translucent sheet opposite the light-coloured surface.
Claim 6
Dependent Claim
30 words
The edgelit illuminated display system of claim 4, further comprising a light-coloured opaque backing sheet which contacts the second surface of the transparent medium with the matrix of dots thereon.
Claim 7
Dependent Claim
39 words
The edgelit illuminated display system of claim 1, wherein the matrix of dots is configured such that the density of dots in number increases away from the edge of the transparent medium which is operable with the light source.
Claim 8
Dependent Claim
44 words
The edgelit illuminated display system of claim 1, wherein the matrix of dots are applied to the transparent medium by etching, painting, screen-printing or as a transparent film with the matrix of dots applied thereto and the film then adhered to the transparent medium.
Claim 9
Dependent Claim
13 words
The edgelit illuminated display system of claim 1, wherein the dots are opaque.
Claim 10
Dependent Claim
39 words
The edgelit illuminated display system of claim 1, wherein the matrix of dots is configured such that the density of dots in size increases away from the edge of the transparent medium which is operable with the light source.
Claim 11
Dependent Claim
100 words
An edgelit illuminated display system comprising: a housing having a light source therein; a transparent medium having first and second opposing surface and at least one edge operable with the light source for illuminating the first and second surfaces; and a matrix of dots on each of the surfaces arranged to allow interaction of light between the surfaces, the matrix of dots on at least one of the surfaces substantially covering the entire surface for providing an even and increased illumination throughout the surface, wherein when a graphic image is supported over the surface, the graphic image is evenly illuminated.
Claim 12
Dependent Claim
100 words
An edgelit illuminated display system comprising: a housing having a light source therein; a transparent medium having first and second opposing surface and at least one edge operable with the light source for illuminating the first and second surfaces; and a matrix of dots on each of the surfaces arranged to allow interaction of light between the surfaces, the matrix of dots on at least one of the surfaces substantially covering the entire surface for providing an even and increased illumination throughout the surface, wherein when a graphic image is supported over the surface, the graphic image is evenly illuminated.
Claim 13
Dependent Claim
50 words
The edgelit illuminated display system of claim 10, further comprising a first translucent sheet having at least one light-colored surface thereon for diffusing and reflecting light, wherein the light-colored surface of the first translucent sheet communicates with the first surface of the transparent medium with the matrix of dots thereon.
Claim 14
Dependent Claim
26 words
The edgelit illuminated display system of claim 11, wherein the graphic image is formed on a surface of the first translucent sheet opposite the light-colored surface.
Claim 15
Dependent Claim
46 words
The edgelit illuminated display system of claim 12, further comprising a second translucent sheet having at least one light-colored surface thereon for diffusing and reflecting light, wherein the second translucent sheet communicates with the second surface of the transparent medium with the matrix of dots thereon.
Claim 16
Dependent Claim
30 words
The edgelit illuminated display system of claim 10, wherein the matrix of dots is configured such that the density of dots increases away from the edge of the transparent medium.
Claim 17
Dependent Claim
44 words
The edgelit illuminated display system of claim 10, wherein the matrix of dots are applied to the transparent medium by etching, painting, screen-printing, or as a transparent film with the matrix of dots applied thereto and the film then adhered to the transparent medium.
Claim 18
Dependent Claim
13 words
The edgelit illuminated display system of claim 10, wherein the dots are translucent.
Claim 19
Dependent Claim
13 words
The edgelit illuminated display system of claim 10, wherein the dots are opaque.
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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) | 1998-02-20 | 1998-08-22 | 1999-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-02-20 | 2002-08-22 | 2003-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-02-20 | 2006-08-22 | 2007-02-21 | $7700.00 | Window Closed / Lapsed |