Patent EP0467601A2 successfully refreshed from Google Patents.
EP0467601A2
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EP
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Holographic diffraction grating patterns and methods for creating the same
Assignee: Opsec Security Group Inc
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Filing: 1991-07-11
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Granted: —
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Expires: 2011-07-11
Abstract
Abstract Decorative holographic diffraction grating patterns and methods of creating the same which provide low cost computer generation of two-dimensional holographic patterns and the generation of very large holographic patterns. In accordance with the method, the desired pattern is made up of a large plurality of individual spots, each spot comprising a holographic diffraction grating of a predetermined grating spacing and angular orientation for that spot. Variation of the angular orientation and/or grating spacing between spots and/or groups of spots provide the desired holographic effect. The spot locations may vary as desired, including locations drawing out a desired pattern, and two-dimensional orthogonal matrices in which a pattern is drawn by variations between spots or group of spots as in a raster scan type image. Various embodiments and methods for creating the same are disclosed.
Inventors
- 👤 Craig Newswanger
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
G; G03; G03H; G03H1/00; G03H1/04; G03H1/0476; G02; G02B; G02B5/00; G02B5/18; G02B5/1842; G03H1/26; G03H1/268; G03H1/0005; G03H1/0011; G03H1/02; G03H1/0236; G03H1/0276; G03H1/028; G03H1/2645; G03H1/265; G03H2001/0055; G03H2001/0482; G03H1/0493; G03H2001/0497; G03H2210/00; G03H2210/50; G03H2210/52; G03H2224/00; G03H2224/02; G03H2230/00; G03H2230/10; G03H2250/00; G03H2250/10; G03H2260/00; G03H2260/50; G03H2260/61; G03H2270/00; G03H2270/20; G03H2270/24
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
101 words
A method of forming holographic diffraction grating patterns comprising the steps of: (a) providing a member having a photosensitive region thereon; (b) providing a means for exposing a spot on the photosensitive region of the member to a holographic diffraction grating, the spot having an area of only a very small fraction of the area of the photosensitive region; (c) exposing a spot on the photosensitive region of the member to the holographic diffraction grating; and, (d) repeating step (c) a plurality of times for a plurality of spots having different locations on the photosensitive region to define a pattern thereon.
Claim 2
Dependent Claim
24 words
The method of claim 1 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d).
Claim 3
Dependent Claim
41 words
The method of claim 1 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d) by varying the angle thereof about an axis perpendicular to the local surface of the photosensitive region.
Claim 4
Dependent Claim
35 words
The method of claim 1 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d) by varying the spacing of the lines of the diffraction grating.
Claim 5
Dependent Claim
58 words
The method of claim 1 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d) by varying the angle thereof about an axis perpendicular to the local surface of the photosensitive region and at the same or other times varying the spacing of the lines of the diffraction grating.
Claim 6
Dependent Claim
19 words
The method of claim 1 wherein in steps (c) and (d), the spots are exposed in a predetermined manner.
Claim 7
Dependent Claim
27 words
The method of claim 1 wherein in steps (c) and (d), the spots are exposed in a manner so as to trace out a specific decorative pattern.
Claim 8
Dependent Claim
20 words
The method of claim 1 wherein in steps (c) and (d), the spots are exposed in a raster scan pattern.
Claim 9
Dependent Claim
10 words
The method of claim 1 wherein the spots are round.
Claim 10
Dependent Claim
10 words
The method of claim 1 wherein the spots are polygonal.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein in steps (c) and (d), the exposure is varied between at least some spots.
Claim 12
Independent Claim
97 words
A method of forming holographic diffraction grating patterns comprising the steps of: (a) providing a member having a surface thereon; (b) providing a means for impressing a holographic diffraction grating on a spot on the surface, the spot having an area of only a very small fraction of the area of the surface; (c) impressing a holographic diffraction grating on a spot on the surface using the means provided in step (b); and, (d) repeating step (c) a plurality of times for a plurality of spots having different locations on the surface to define a pattern thereon.
Claim 13
Dependent Claim
24 words
The method of claim 12 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d).
Claim 14
Dependent Claim
54 words
The method of claim 12 wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d) by varying the angle of the means for impressing a holographic diffraction grating on a spot about an axis perpendicular to the current spot area before making the respective impression.
Claim 15
Dependent Claim
76 words
The method of claim 12 wherein in step (b), a plurality of means for impressing a holographic diffraction grating on a spot on the surface are provided, and the spacing of the lines of the holographic diffraction grating impressed in steps (c) and (d) is varied between at least some of the impressions of steps (c) and (d) by varying which means for impressing a holographic diffraction grating on a spot on the surface is used.
Claim 16
Dependent Claim
116 words
The method of claim 12 wherein in step (b), a plurality of means for impressing a holographic diffraction grating on a spot on the surface are provided, and wherein the holographic diffraction grating is varied between at least some of the exposures of steps (c) and (d) by varying the angle of the means for impressing a holographic diffraction grating on a spot about an axis perpendicular to the current spot area before making the respective impression and at the same or other times varying the spacing of the lines of the diffraction grating by varying which means for impressing a holographic diffraction grating on a spot on the surface is used. in a predetermined manner.
Claim 17
Dependent Claim
27 words
The method of claim 12 wherein in steps (c) and (d), the spots are impressed in a manner so as to trace out a specific decorative pattern.
Claim 18
Dependent Claim
20 words
The method of claim 12 wherein in steps (c) and (d), the spots are impressed in a raster scan pattern.
Claim 19
Dependent Claim
19 words
The method of claim 12 wherein in steps (c) and (d), the spots are impressed using a transfer process.
Claim 20
Dependent Claim
20 words
The method of claim 12 wherein in steps (c) and (d), the spots are impressed using a hot transfer process.
Claim 21
Dependent Claim
38 words
An article having a diffraction pattern thereon comprising a plurality spots defining the pattern, each spot having a different location on the article and defining a diffraction grating of a specific spacing and angular orientation for that spot.
Claim 22
Dependent Claim
18 words
The article of claim 21 wherein the holographic diffraction grating varies between at least some of the spots.
Claim 23
Dependent Claim
19 words
The article of claim 21 wherein the angle of the holographic diffraction grating varies between at least some spots.
Claim 24
Dependent Claim
24 words
The article of claim 21 wherein the spacing of the lines of the holographic diffraction grating varies between at least some of the spots.
Claim 25
Dependent Claim
32 words
The article of claim 21 wherein the spacing of the lines of the holographic diffraction grating and the angle of the holographic diffraction grating varies between at least some of the spots.
Claim 26
Dependent Claim
14 words
The article of claim 21 wherein the spots trace out a specific decorative pattern.
Claim 27
Dependent Claim
14 words
The article of claim 21 wherein the spots are disposed in a rectangular matrix.
Claim 28
Dependent Claim
10 words
The article of claim 21 wherein the spots are round.
Claim 29
Dependent Claim
10 words
The article of claim 21 wherein the spots are rectangular.
Claim 30
Dependent Claim
17 words
The article of claim 21 wherein the diffraction grating at each spot is formed by hot stamping.
Claim 31
Dependent Claim
33 words
The article of claim 21 wherein the diffraction grating at each spot is defined by a transfer having the diffraction grating thereon and fastened to the article at the desired location and angle.
References Cited (Backward Citations)
No citation records indexed.
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