ANTIREFLECTION FILM AND FUNCTIONAL GLASS

• US 20170028676A1
• Filed: 10/11/2016
• Published: 02/02/2017
• Est. Priority Date: 04/14/2014
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: YASUDA, Hideki, MATSUNO, Ryou
• Application Number:
  US15/290,415
• Publication Number:
  US 20170028676A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 2264/102 Oxide or hydroxide
• CPC Class Codes: B32B 23/04 comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a glass layer B32B17/08
• CPC Class Codes: B32B 23/18 Fillers
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/418 Refractive
• CPC Class Codes: B32B 2419/00 Buildings or parts thereof walls, panels B32B2607/00
• CPC Class Codes: B32B 2605/006 Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
• CPC Class Codes: B32B 27/20 using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 7/023 Optical properties

Abstract

An antireflection film includes an antireflection structure which has different reflectivity with respect to light to be incident on front and back surfaces, and includes a silver nano-disk layer formed by dispersing a plurality of silver nano-disks in a binder, and a layer of low refractive index which is formed on a surface of the silver nano-disk layer and has a refractive index smaller than a refractive index of the transparent substrate, and in which a ratio of a diameter of the silver nano-disk to a thickness is greater than or equal to 3, an area ratio of the silver nano-disk to the silver nano-disk layer is from 10% to 40%, and a pair of antireflection films having reflection conditions different from each other adhere to both surfaces of glass.

Claims

1. An antireflection film preventing an incidence ray having a wavelength λ

from being reflected, comprising;

a transparent substrate; and

an antireflection structure disposed on one surface of the transparent substrate,

wherein when reflectivity in a case in which light having a wavelength λ

is incident on the antireflection structure from a front surface side is set to A, and reflectivity in a case in which light having a wavelength λ

is incident on the antireflection structure from a back surface side, in which the transparent substrate is present, is set to B, A and B satisfy Relational Expression (1) or (2) described below,

A<

1.0% and B/A>

2 

 

(1)

B<

1.0% and A/B>

2 

 

(2),

the antireflection structure includes a silver nano-disk layer formed by dispersing a plurality of silver nano-disks in a binder, and a layer of low refractive index which is formed on a surface of the silver nano-disk layer and has a refractive index smaller than a refractive index of the transparent substrate,

a ratio of a diameter of the silver nano-disk to a thickness is greater than or equal to 3, and

an area ratio of the silver nano-disk to the silver nano-disk layer is from 10% to 40%.

2. The antireflection film according to claim 1,

wherein the transparent substrate is a polyethylene terephthalate film or a triacetyl cellulose film.

3. The antireflection film according to claim 1,

wherein the layer of low refractive index is formed by dispersing a plurality of hollow silicas in a binder.

4. The antireflection film according to claim 2,

wherein the layer of low refractive index is formed by dispersing a plurality of hollow silicas in a binder.

5. The antireflection film according to claim 1,

wherein the antireflection structure includes a layer of high refractive index having a refractive index larger than the refractive index of the transparent substrate between the transparent substrate and the silver nano-disk layer.

6. The antireflection film according to claim 2,

wherein the antireflection structure includes a layer of high refractive index having a refractive index larger than the refractive index of the transparent substrate between the transparent substrate and the silver nano-disk layer.

7. The antireflection film according to claim 3,

wherein the antireflection structure includes a layer of high refractive index having a refractive index larger than the refractive index of the transparent substrate between the transparent substrate and the silver nano-disk layer.

8. The antireflection film according to claim 4,

wherein the antireflection structure includes a layer of high refractive index having a refractive index larger than the refractive index of the transparent substrate between the transparent substrate and the silver nano-disk layer.

9. The antireflection film according to claim 1,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

10. The antireflection film according to claim 2,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

11. The antireflection film according to claim 3,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

12. The antireflection film according to claim 4,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

13. The antireflection film according to claim 5,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

14. The antireflection film according to claim 6,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

15. The antireflection film according to claim 7,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

16. The antireflection film according to claim 8,

wherein the antireflection structure includes a hard coat layer between the transparent substrate and the silver nano-disk layer.

17. A functional glass, comprising:

a glass plate;

a first antireflection film adhering to one surface of the glass plate; and

a second antireflection film adhering to the other surface of the glass plate,

wherein the first antireflection film and the second antireflection film are the antireflection film according to claim 1 and have reflection conditions different from each other, and

when reflectivity in a case in which light having a wavelength λ

is incident from the one surface side is set to C, and reflectivity in a case in which the light is incident from the other surface side is set to D,

C and D satisfy Relational Expression (3) or (4) described below,

C<

2.0% and D/C>

2 

 

(3)

D<

2.0% and C/D>

2 

 

(4).

18. A functional glass, comprising:

a glass plate;

a first antireflection film adhering to one surface of the glass plate; and

a second antireflection film adhering to the other surface of the glass plate,

wherein the first antireflection film and the second antireflection film are the antireflection film according to claim 14 and have reflection conditions different from each other, and

when reflectivity in a case in which light having a wavelength λ

is incident from the one surface side is set to C, and reflectivity in a case in which the light is incident from the other surface side is set to D,

C and D satisfy Relational Expression (3) or (4) described below,

C<

2.0% and D/C>

2 

 

(3)

D<

2.0% and C/D>

2 

 

(4).