Title:
OPTICAL FILM
Document Type and Number:
Japanese Patent JP2015146004
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical film that allows efficient and stable lighting even when the sun changes in altitude, while improving brightness in a room as a whole.SOLUTION: A lighting film 1 includes a plurality of air layers 10 configured to reflect light. The plurality of air layers 10 are respectively formed to extend in a first surface direction Y, and arranged in parallel with intervals to each other in a second surface direction Z orthogonal to the first surface direction Y. The plurality of air layers 10 include air layers 10 arranged with a first interval S1 to each other and air layers 10 arranged with a second interval S2 to each other. The second interval S2 has different dimension in the second surface direction Z from the first interval S1.
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Inventors:
FUJIOKA KAZUYA
Application Number:
JP2014019535A
Publication Date:
August 13, 2015
Filing Date:
February 04, 2014
Export Citation:
Assignee:
NITTO DENKO CORP
International Classes:
G02B5/08; B32B3/10; B32B7/02; F21S11/00; G02B5/00
Attorney, Agent or Firm:
Hiroyuki Okamoto
Shinichi Uda
Shinichi Uda
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