Title:
光学シート及びその製造方法
Document Type and Number:
Japanese Patent JP5224932
Kind Code:
B2
Abstract:
The invention aims to provide an optical sheet manufacturing method with high production efficiency, high all ray transmission, high optical performances such as photodiffusion function, ray concentration function and refraction function in normal direction capable of preventing plural scattering and an optical sheet using the manufacturing method. The optical sheet manufacturing method comprises: a first extruding laminating working procedure: an original optical sheet with the same shape as the surface having micro concavo-convex optical sheet is used, a synthetic resin for molding is laminated by using extruding laminating method on the surface of the original optical sheet; a first peeling working procedure: from the synthetic resin for molding, the original optical sheet is peeled toprepare an optical sheet forming mold transferred with reversed shape with the micro concavo-convex shape on the surface; a second extruding laminating working procedure: the synthetic resin for optical layer is laminated by using extruding laminating method on the surface of the optical sheet forming mold; and a second demolding working procedure: the optical sheet forming mold is peeled from the synthetic resin layer for optical layer to prepare the optical sheet transferred with the micro concavo-convex shape on the surface.
Inventors:
Nagamura Keisuke
Akira Kobayashi
Motohiko Okabe
Hiroshi Mineo
Akira Kobayashi
Motohiko Okabe
Hiroshi Mineo
Application Number:
JP2008165315A
Publication Date:
July 03, 2013
Filing Date:
June 25, 2008
Export Citation:
Assignee:
Giroo Corporate Plan Co., Ltd.
International Classes:
B29C47/02; B29C48/305; B32B37/15; G02B5/02; B29L9/00; B29L11/00
Domestic Patent References:
| JP2008132699A | ||||
| JP2004287418A |
Attorney, Agent or Firm:
Hajime Amano