Title:
OPTICAL SHEET AND BACK LIGHT UNIT USING THE SAME
Document Type and Number:
Japanese Patent JP2001091708
Kind Code:
A
Abstract:
To provide an optical sheet with which the peak direction of rays passing the sheet can be made upward without increasing a light-diffusing function, and to provide a back light unit using that sheet.
The sheet comprises a transparent synthetic resin base layer 2 and has specified optical characteristics. The base layer 2 consists of materials A, B of different kinds alternately arranged.
Inventors:
OKABE MOTOHIKO
Application Number:
JP27259199A
Publication Date:
April 06, 2001
Filing Date:
September 27, 1999
Export Citation:
Assignee:
KEIWA INC
International Classes:
G02B5/02; G02F1/1335; G02F1/13357; (IPC1-7): G02B5/02; G02F1/13357
Attorney, Agent or Firm:
Yoshihiro Tsunoda (2 outside)