Title:
LIGHT EXTRACTION MEMBER
Document Type and Number:
WIPO Patent Application WO/2019/026865
Kind Code:
A1
Abstract:
Provided is a light extraction member which is able to be obtained at an adequate cost, while achieving desired light output characteristics without requiring complicated design and structure, and which is easily combined with another member, while exhibiting excellent productivity and excellent handling properties. A light extraction member according to the present invention is provided with: a light guide part which has a first main surface that is on the light output side and a second main surface that is on the reverse side of the first main surface; and a light output control layer which is a predetermined pattern formed on the first main surface of the light guide part. With respect to this light extraction member, the refractive index n1 of the light guide part and the refractive index n2 of the light output control layer satisfy relational expression n1 > n2; and the refractive index n2 of the light output control layer is from 1.01 to 1.30.
Inventors:
SUGINO AKIKO (JP)
NAKAMURA KOZO (JP)
HATTORI DAISUKE (JP)
NAKAMURA KOZO (JP)
HATTORI DAISUKE (JP)
Application Number:
PCT/JP2018/028518
Publication Date:
February 07, 2019
Filing Date:
July 31, 2018
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
F21V8/00; G02B5/00; G02B6/00; G09F13/18
Foreign References:
| JP2015534100A | 2015-11-26 | |||
| JP2017068248A | 2017-04-06 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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