OPTICAL FILM MANUFACTURING METHOD AND LIGHTING FILM

Title:

OPTICAL FILM MANUFACTURING METHOD AND LIGHTING FILM

Document Type and Number:

Japanese Patent JP2014235379

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide an optical film manufacturing method capable of improving productivity and reducing manufacturing cost although the method is simple, and a lighting film manufactured by the manufacturing method.SOLUTION: An optical film manufacturing method comprises: preparing a plurality of unit films 2 provided with a transparent layers 3 and removal material layers 4; laminating the unit films 2 in a thickness direction of the transparent layers 3 to form a laminate 5; then, cutting the laminate 5, so that the transparent layers 3 and the removal material layers 4 continue in the thickness direction of the transparent layers 3, to form a laminated film 7; and then, removing the removal material layers 4 from the laminated film 7 to replace the removal material layers 4 with air layers 6.

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Inventors:

FUJIOKA KAZUYA
HARA KAZUTAKA

Application Number:

JP2013118194A

Publication Date:

December 15, 2014

Filing Date:

June 04, 2013

Export Citation:

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Assignee:

NITTO DENKO CORP

International Classes:

G02B5/00; F21S11/00; F21V9/00

Attorney, Agent or Firm:

Hiroyuki Okamoto
Shin-ichi Uda

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