Title:
OPTICAL FILM AND SURFACE LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP2013073192
Kind Code:
A
Abstract:
To provide an optical film capable of preventing partial adhesion without deteriorating the brightness and preventing coloration due to spectroscopy.
The optical film includes a translucent base film 1 with first and second principal planes facing each other, a deflection element layer 2 that is disposed in the first principal plane and has plural deflection elements 3 adjacent to each other and extending in one direction, and a protrusion layer 4 that is disposed in the second principal plane and has plural protrusions 5. The protrusion layer 4 includes plural light diffusion materials composed of a binder resin and a resin having different refraction index from that of the binder resin.
Inventors:
ENDO TOSHIHIRO
SUGIMOTO YASUSHI
ISHIKAWA YOSHIYASU
TAKAIWA HISAYUKI
SUGIMOTO YASUSHI
ISHIKAWA YOSHIYASU
TAKAIWA HISAYUKI
Application Number:
JP2011214161A
Publication Date:
April 22, 2013
Filing Date:
September 29, 2011
Export Citation:
Assignee:
HITACHI CHEMICAL CO LTD
International Classes:
G02B5/02; B32B7/02; B32B27/00; F21S2/00; F21V3/00; F21V3/04; F21V5/00; F21V5/02; G02B5/18; G02F1/13357; F21Y101/02
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu