Title:
LIGHT GUIDE MEMBER AND LIGHT GUIDE STRUCTURE
Document Type and Number:
Japanese Patent JP2019039143
Kind Code:
A
Abstract:
To provide a light guide member and a light guide structure having high light guide performance and high soundproof performance.SOLUTION: The light guide member includes a sheet member having a plurality of through holes penetrating in the thickness direction, the average opening diameter of the through holes is 1 μm or more and 250 μm or less, and at least one surface of the sheet member is 50% or more in light reflectance in a visible light region, and both surfaces of the sheet member are in contact with the fluid in at least a part of the sheet member, and a peak value of a normal incidence sound absorption coefficient of the sheet member is 10% or more in an audible range.SELECTED DRAWING: Figure 1
Inventors:
HAKUTA SHINYA
YAMAZOE SHOGO
OTSU AKIHIKO
SUGAWARA YOSHIHIRO
YAMAZOE SHOGO
OTSU AKIHIKO
SUGAWARA YOSHIHIRO
Application Number:
JP2017159385A
Publication Date:
March 14, 2019
Filing Date:
August 22, 2017
Export Citation:
Assignee:
FUJIFILM CORP
International Classes:
E04D13/03; E06B5/00; F21S11/00
Domestic Patent References:
| JP2009076212A | 2009-04-09 | |||
| JP2008082079A | 2008-04-10 | |||
| JP2011070999A | 2011-04-07 | |||
| JPH03168561A | 1991-07-22 |
Attorney, Agent or Firm:
Nozomi Watanabe
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi
Haruko Sanwa
Hideaki Ito
Fumio Mitsuhashi