Light-scattering film, polarizing plate and image display
First Claim
Patent Images
1. A light-scattering film comprising:
- a transparent support; and
a light-scattering layer, wherein when substantially parallel light is incident on a surface of the light-scattering film at an incident angle of 5°
, Reflection coefficient B represented by formula 2 is from 2.0 to 5.0;
Reflection coefficient B=2.2×
log 10(Rs)−
7.5×
log 10(A)+5.9
Formula 2wherein Rs is a 5°
specular reflectance, and A is Scattering coefficient A represented by formula 1;
Scattering coefficient A=1/(10×
|dRrel(θ
)/dθ
|max)
Formula 1wherein R(θ
) is a reflectance at an angle θ
with respect to a normal line to the light-scattering film and in a plane defined the normal line and an incident direction of the substantially parallel incident light, and Rrel(θ
) is a value obtained by normalizing R(θ
) by the reflectance of regular reflection.
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Accused Products
Abstract
A light-scattering film is provided and includes a transparent support having thereon at least a light-scattering layer. When substantially parallel light is incident on a surface of the film at an incident angle of 5°, the reflectance for an angle θ in the light-receiving part measured in a plane containing the film normal line and the incident direction is R(θ), the value obtained by normalizing R(θ) by the reflectance of regular reflection is Rrel(θ), and the value calculated from the maximum variation |dRrel(θ)/dθ|max for the angle θ is a scattering coefficient A (formula 1), the reflection coefficient B (formula 2) calculated from the scattering coefficient A and the 5° specular reflectance Rs is from 2.0 to 5.0.
Scattering coefficient A=1/(10×|dRrel(θ)/dθ|max) (Formula 1)
Reflection coefficient B=2.2×log 10(Rs)−7.5×log 10(A)+5.9 (Formula 2)
14 Citations
22 Claims
-
1. A light-scattering film comprising:
- a transparent support; and
a light-scattering layer, wherein when substantially parallel light is incident on a surface of the light-scattering film at an incident angle of 5°
, Reflection coefficient B represented by formula 2 is from 2.0 to 5.0;
Reflection coefficient B=2.2×
log 10(Rs)−
7.5×
log 10(A)+5.9
Formula 2wherein Rs is a 5°
specular reflectance, and A is Scattering coefficient A represented by formula 1;
Scattering coefficient A=1/(10×
|dRrel(θ
)/dθ
|max)
Formula 1wherein R(θ
) is a reflectance at an angle θ
with respect to a normal line to the light-scattering film and in a plane defined the normal line and an incident direction of the substantially parallel incident light, and Rrel(θ
) is a value obtained by normalizing R(θ
) by the reflectance of regular reflection.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- a transparent support; and
-
22. A light-scattering film comprising:
- a transparent support; and
a light-scattering layer, wherein when substantially parallel light is incident on a surface of the light-scattering film at an incident angle of 5°
, Reflection coefficient B represented by formula 2 is from 2.0 to 5.0;
Reflection coefficient B=2.2×
log 10(Rs)−
7.5×
log 10(A)+5.9
Formula 2wherein Rs is a 5°
specular reflectance, and A is Scattering coefficient A represented by formula 1;
Scattering coefficient A=1/(10×
|dRrel(θ
)/dθ
|max)
Formula 1wherein R(θ
) is a reflectance at an angle θ
with respect to a normal line to the light-scattering film and in a plane defined the normal line and an incident direction of the substantially parallel light, and Rrel(θ
) is a value obtained by normalizing R(θ
) by the reflectance of regular reflection, andwherein the 5°
specular reflectance Rs is from 0.1 to 2.0%, an integrated reflectance with respect to the substantially parallel light is from 0.2 to 2.0%, and a difference between the integrated reflectance and the 5°
specular reflectance Rs is from 0.1 to 1.0%.
- a transparent support; and
Specification
-
- Resources
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Current AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
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Original AssigneeFujifilm Corporation (Fujifilm Holdings Corporation)
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InventorsWakizaka, Daiki, Ikuhara, Isao, Watanabe, Jun, Ishibashi, Hideyasu, Asakura, Tetsuya, Inoue, Katsumi
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Primary Examiner(s)FINEMAN, LEE A
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Application NumberUS11/727,581Publication NumberTime in Patent Office1,295 DaysField of SearchNoneUS Class Current359/485.01CPC Class CodesG02B 5/0242 by means of dispersed parti...G02B 5/0268 characterized by the fabric...G02B 5/0284 used in reflectionG02F 1/133504 Diffusing, scattering, diff...G02F 1/133528 PolarisersG02F 2201/38 Anti-reflection arrangementsG02F 2201/50 Protective arrangementsG02F 2202/28 Adhesive materials or arran...
