Back to results
US 2019/0279403 A1Published application
Optical film
AssigneeToppan Printing Co., Ltd.
InventorsAkihito KAGOTANI, Toshiki TODA
Life of this patent
Estimating the term…
Abstract
An optical film including a recording surface on which a plurality of unit blocks is disposed at regular intervals. For these unit blocks, phase components of light from a reconstruction point are calculated. The recording surface includes a calculated element region provided with an array of the unit blocks for which phase components of light from the reconstruction point are calculated for reproduction of an image. A first image is a monotone reconstruction image having even brightness, and a second image is a grayscale image having brightness gradation.
Claims3
An optical film comprising:
- a recording surface on which a plurality of unit blocks is disposed at regular intervals, wherein:
- the recording surface includes a first calculated element region provided with an array of unit blocks for which phase components of light from a reconstruction point configuring a first image are calculated, and a second calculated element region provided with an array of unit blocks for which phase components of light from a reconstruction point configuring a second image are calculated;
- the first image is a monotone reconstruction image having even brightness, and the second image is a grayscale image having brightness gradation;
- each phase component of a grayscale image reproduced at a grayscale reconstruction point is calculated according to the following relationship:
- W
-
- (
- kx
- ,
- ky
- )
- =
- ∑
- n
- =
- 0
- N
-
-
- m
-
-
- ax
-
- ∑
- kx
- =
- Y
-
-
- m
-
-
- i
-
-
- n
- Y
-
-
- m
-
-
- ax
-
- ∑
- kx
- =
- X
-
-
- m
-
-
- i
-
-
- n
- X
-
-
- m
-
-
- a
-
-
- x
-
- amp
- ·
- exp
-
- (
- i
-
-
- φ
- )
- φ
- =
- π
- λ
- ·
- O
- n
-
- (
- z
- )
-
- {
- (
- O
- n
-
- (
- x
- )
- -
- kx
- )
- 2
- +
- (
- O
- n
-
- (
- y
- )
- -
- ky
- )
- 2
- }
- each phase component of a monotone reconstruction image reproduced at a monotone reconstruction point is calculated according to the following relationship:
- W
-
- (
- x
- ,
- y
- )
- =
- ∑
- n
- =
- 0
- N
-
-
- m
-
-
- ax
-
- ∑
- kx
- =
- Y
-
-
- m
-
-
- i
-
-
- n
- Y
-
-
- m
-
-
- ax
-
- ∑
- kx
- =
- X
-
-
- m
-
-
- i
-
-
- n
- X
-
-
- m
-
-
- a
-
-
- x
-
- exp
-
- (
- i
-
-
- φ
- )
- φ
- =
- π
- λ
- ·
- O
- n
-
- (
- z
- )
-
- {
- (
- O
- n
-
- (
- x
- )
- -
- kx
- )
- 2
- +
- (
- O
- n
-
- (
- y
- )
- -
- ky
- )
- 2
- }
- where W(x, y) is a phase component at a coordinate x or y, i is an imaginary number, λ, is a wavelength of light at the time of reproducing the image, On(x, y, z) is a central coordinate of a unit block nearest to a coordinate of a reconstruction point, (kx, ky, O) is a coordinate of a unit block, ϕ is a phase angle, and amp is grayscale information.
225 more elements
Dependencies are inferred from the claim text.