Moiré displays, devices for generating moiré-producing pattern, systems for generating moiré-producing pattern, and methods for generating moiré-producing pattern
AssigneeToppan Inc.
InventorYumi Takizawa
Life of this patent
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Abstract
A pattern for producing a moiré image with a sense of movement and technique for creating such patterns. A moiré display includes: a first pattern; and a second pattern disposed offset from the first pattern by a predetermined distance, the second pattern having a phase which continuously changes relative to the first pattern in at least one region. For example, a moiré image with a sense of movement can be produced when the second pattern has a phase that changes according to a function in at least one section. Accordingly, a moiré image with a sense of natural movement can be produced by inputting an input image and data such as a feature value of the input image.
Claims6
A moiré display, comprising:
- a first pattern;
- and
- a second pattern disposed offset from the first pattern by a predetermined distance, the second pattern having a phase which continuously changes relative to the first pattern in at least one region, wherein
- the second pattern has a phase that changes according to a function in at least one section, and wherein,
- when a reference point is set, and, in coordinates relative to the reference point, a coordinate in a direction perpendicular to moiré fringes is x and a coordinate perpendicular to x is y,
- a moiré intensity R of the first pattern satisfies the following formula (1),
- a moiré intensity B of the second pattern satisfies the following formula (2), and
- a phase shift amount PH representing a change in the phase of the second pattern relative to the first pattern satisfies the following formula (3):
- [
- Math
- .
- 5
- ]
-
- R
-
- (
- x
- ,
- y
- )
- =
- 0.5
- +
- 0.5
- ×
- cos
-
- (
- 2
-
- π
- ×
- x
-
- cos
-
- a
- +
- y
-
- sin
-
- a
- P
- )
- (
- 1
- )
- (
- x
- ,
- y
- )
- =
- 0.5
- +
- 0.5
- ×
- cos
- (
- 2
-
- π
- ×
- x
-
- cos
-
- a
- +
- y
-
- sin
-
- a
- P
- +
- PH
-
- (
- x
- ,
- y
- )
- )
- (
- 2
- )
- PH
-
- (
- x
- .
- y
- )
- =
- k
- ×
- 2
-
- π
- ×
- x
-
- cos
-
- a
- ∝
- +
- y
-
- sin
- ∝
- P
- )
- (
- 3
- )
- where α is a stripe angle, P is a stripe pitch, and k is a phase shift coefficient.
Dependencies are inferred from the claim text.