US5806218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Border for an image
Assignee: Central Research Laboratories Ltd
•
Filing: 1995-03-27
•
Granted: 1998-09-15
•
Expires: 2015-03-27
Abstract
Abstract A border for a substantially two-dimensional image comprises an anterior pattern and a posterior pattern, the patterns being space one from the other and being arranged to form, when viewed together, a resultant apparent pattern in a different plane to that of the image. The patterns each comprise relatively brighter and relatively darker regions, but each usually has a different pitch. The posterior pattern may advantageously comprise an array of reflective dots printed onto a major surface of a light transmissive sheet which may be edge lit by a light source. The border brightness can then be independent of ambient light conditions and simple to manufacture.
Inventors
- 👤 Ian Alexander Shanks
- 👤 Christoph Dobrusskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:20
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
A border for a substantially planar image, comprising: a transparent sheet; a first pattern comprising relatively bright and relatively darker regions formed by scattering centers distributed over at least part of one major surface of said transparent sheet; a second pattern comprising regions which are relatively more and relatively less light transmissive thereby forming a masking pattern, said second pattern being superimposed on, but spaced from said first pattern in a direction substantially orthogonal to a plane formed by said first pattern, and being provided on or adjacent another major surface of said transparent sheet; wherein overlying parts of said first and second patterns are such as to form a resultant pattern appearing to lie outside of the plane of said transparent sheet; and a light source for illuminating said scattering centers with light provided through an edge of said transparent sheet and travelling along an interior of said transparent sheet.
Claim 2
Dependent Claim
151 words
A border for a substantially planar image, comprising: a transparent sheet; a first pattern comprising relatively bright and relatively darker regions formed by scattering centers distributed over at least part of one major surface of said transparent sheet; a second pattern comprising regions which are relatively more and relatively less light transmissive thereby forming a masking pattern, said second pattern being superimposed on, but spaced from said first pattern in a direction substantially orthogonal to a plane formed by said first pattern, and being provided on or adjacent another major surface of said transparent sheet; wherein overlying parts of said first and second patterns are such as to form a resultant pattern appearing to lie outside of the plane of said transparent sheet; and a light source for illuminating said scattering centers with light provided through an edge of said transparent sheet and travelling along an interior of said transparent sheet.
Claim 3
Dependent Claim
25 words
A border according to claim 1, wherein said resultant pattern is capable of exhibiting parallax in a plurality of directions when used with the image.
Claim 4
Dependent Claim
24 words
A border according to claim 1, wherein said scattering centers are formed by areas of paint or ink provided on the one major surface.
Claim 5
Dependent Claim
13 words
A border according to claim 3, wherein said transparent sheet includes an aperture.
References Cited (Backward Citations)
DE932039C
Cited
FR1377294A
Cited
US3582961A
Cited
US3583961A
Cited
US3701581A
Cited
WO1993013699A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-14 | 2002-03-16 | 2002-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-14 | 2006-03-16 | 2006-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-14 | 2010-03-16 | 2010-09-15 | $7700.00 | Window Closed / Lapsed |