Patent US3811213A successfully refreshed from Google Patents.
US3811213A
Expired / Lapsed
US
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Moire motion illusion apparatus and method
Assignee: Photo Motion Corp
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Filing: 1972-02-16
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Granted: 1974-05-21
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Expires: 1992-02-16
Abstract
Abstract Apparatus and methods are presented for the simulation of motion through the use of moire patterning. Motion simulation is accomplished with two overlay transparent sheets imprinted with dot patterns of different frequencies. One of the sheets, having a plurality of sections of dot patterns of different frequencies, is held stationary and the other sheet, having a uniform dot pattern, is moved relative to the stationary sheet, and an illusion of motion is created on the stationary sheet by movement of moire patterns resulting from the interaction of the dot patterns on the two sheets. The sections on the stationary sheet may be scraped or otherwise burnished to remove some of the dot patterns in the section to generate open areas whereby both uniformity of light transmission and motion illusion may be enhanced.
Inventors
- 👤 R Eaves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:39
CPC Classifications
G; G09; G09F; G09F13/00; G09F19/00; G09F19/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
175 words
An animated display device for creating an illusion of motion including: a first transparent sheet having a dot pattern on at least one surface thereof, said dot pattern on said first sheet being uniform and of a predetermined frequency of dots per inch; a second transparent sheet having a plurality of sections of dot patterns on at least one surface thereof forming a display, at least some of said sections having dot pattern areas and open areAs, the dot patterns in each dot pattern area in a section being of a constant predetermined frequency of dots per inch in the dot pattern area, at least one of the sections being of different dot pattern frequency than another of said sections, and at least some of said sections being of different dot pattern frequency than said first transparent sheet; said second sheet being overlapped with respect to said first sheet to form moire patterns; and means for moving said first sheet with respect to said second sheet to create an illusion of motion of said display.
Claim 2
Dependent Claim
175 words
An animated display device for creating an illusion of motion including: a first transparent sheet having a dot pattern on at least one surface thereof, said dot pattern on said first sheet being uniform and of a predetermined frequency of dots per inch; a second transparent sheet having a plurality of sections of dot patterns on at least one surface thereof forming a display, at least some of said sections having dot pattern areas and open areAs, the dot patterns in each dot pattern area in a section being of a constant predetermined frequency of dots per inch in the dot pattern area, at least one of the sections being of different dot pattern frequency than another of said sections, and at least some of said sections being of different dot pattern frequency than said first transparent sheet; said second sheet being overlapped with respect to said first sheet to form moire patterns; and means for moving said first sheet with respect to said second sheet to create an illusion of motion of said display.
Claim 3
Dependent Claim
77 words
An animated display as in claim 1 wherein: said first sheet is an activator or reference sheet, the dot pattern being a printed pattern forming uniform rows of dots; and wherein said second sheet is an art sheet, the dot pattern in each dot pattern area of a section being a printed pattern forming segments of uniform rows of dots within the area, each section being formed in a predetermined shape to form part of said display.
Claim 4
Dependent Claim
84 words
An animated display device as in claim 1 wherein: said dots in said first sheet are aligned in rows at a predetermined angle with respect to an axis of said sheet; and wherein said dots in each dot pattern area of a section of said second sheet are aligned in rows at a predetermined angle with respect to an axis of each section, at least some of said sections being arranged with their axes inclined with respect to said axis of said first sheet.
Claim 5
Dependent Claim
23 words
An animated display device as in laim 3 wherein: said dots on each of said sheets are formed by a standard printing technique.
Claim 6
Dependent Claim
23 words
An animated display device as in laim 3 wherein: said dots on each of said sheets are formed by a standard printing technique.
Claim 7
Dependent Claim
47 words
An animated display device as in claim 3 wherein: the frequencies of said dot patterns in said sections of said second sheet differ from the frequency of said dot pattern on said first sheet by not more than 10 percent of said first sheet dot pattern frequency.
Claim 8
Dependent Claim
32 words
An animated display device as in claim 3 wherein: the inclination of the axis of any of said sections with respect to said axis of said first sheet is more than 8*.
Claim 9
Dependent Claim
26 words
An animated display device as in claim 3 wherein: the dot patterns on said first and second sheets are printed on opposing faces of said sheets.
Claim 10
Dependent Claim
21 words
An animated display device as in claim 3 wherein: said sheets are spaced apart not more than 1/4 of an inch.
Claim 11
Dependent Claim
78 words
An animated display device as in claim 3 including: depth display dot patterns on the opposite surfaces of said second sheet in areas other than the areas of said sections, said depth display dot patterns being of slightly different frequencies on each of said opposite surfaces, one of said depth display dot patterns being of a frequency approximately NX+ 1/2 X, wherein X is the frequency of the dot pattern in any section and N is any integer.
Claim 12
Dependent Claim
29 words
An animated display device as in claim 9 wherein: said depth display dot patterns on opposite surfaces differ from each other in frequency by from 1 to 15 percent.
Claim 13
Dependent Claim
21 words
An animated display as in claim 1 wherein: said open areas are commensurate with the illusion of motion to be created.
Claim 14
Dependent Claim
25 words
An animated display as in claim 1 wherein: said open areas are formed by removal of dots from a uniform dot pattern in a section.
Claim 15
Dependent Claim
49 words
An animated display device as in claim 1 including: a background section on said second sheet, said background section having a dot pattern thereon of a frequency approximately NX+ 1/2 X, where X is the frequency of the dot pattern on said first sheet and N is any integer.
Claim 16
Dependent Claim
176 words
An animated display device for creating an illusion of motion including: a first transparent sheet having a dot pattern on at least one surface thereof, said dot pattern on said first sheet being uniform and of a predetermined frequency of dots per inch throughout said first sheet; a second transparent sheet having a plurality of sections of dot patterns on at least one surface thereof forming a disPlay, at least some of said sections having dot pattern areas and open areas, the dot patterns in each dot pattern area being of a constant predetermined frequency of dots per inch in the dot pattern area, at least one of the sections being of different dot pattern frequency than another of said sections, and at least some of said sections being of different dot pattern frequency than said first transparent sheet; said first sheet being overlayed with respect to said second sheet to form moire patterns; and means for moving said first sheet with respect to said second sheet to create an illusion of motion of said display.
Claim 17
Dependent Claim
176 words
An animated display device for creating an illusion of motion including: a first transparent sheet having a dot pattern on at least one surface thereof, said dot pattern on said first sheet being uniform and of a predetermined frequency of dots per inch throughout said first sheet; a second transparent sheet having a plurality of sections of dot patterns on at least one surface thereof forming a disPlay, at least some of said sections having dot pattern areas and open areas, the dot patterns in each dot pattern area being of a constant predetermined frequency of dots per inch in the dot pattern area, at least one of the sections being of different dot pattern frequency than another of said sections, and at least some of said sections being of different dot pattern frequency than said first transparent sheet; said first sheet being overlayed with respect to said second sheet to form moire patterns; and means for moving said first sheet with respect to said second sheet to create an illusion of motion of said display.
References Cited (Backward Citations)
US3543361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |