Title:
LIGHT DIFFUSION PLATE USING MICROLENS ARRAY AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/246353
Kind Code:
A1
Abstract:
The present invention provides a light diffusion plate that can apply uniform diffused light while reducing the influence of diffusion, and that can be easily created by imprinting, and a method for manufacturing the same. Provided is a light diffusion plate in which a plurality of microlenses are arranged on a flat surface including a first direction and a second direction crossing the first direction. The vertexes of the plurality of microlenses are disposed to be randomly displaced within the range of a displacement width δ1 in the first direction and a displacement width δ2 in the second direction within the flat surface, respectively, from a plurality of reference points arranged with a period P1 and a period P2 in the first direction and the second direction, respectively, some boundary portions among adjacent microlenses have flat portions F with the same height H, and the ratio of the area of the flat portions to the area of the flat surface of the light diffusion plate is 1.0% or less.
Inventors:
SHIBANUMA TOSHIHIKO (JP)
TAKESHITA AYANO (JP)
SUZAKI GORO (JP)
GOTO MASANAO (JP)
TAKESHITA AYANO (JP)
SUZAKI GORO (JP)
GOTO MASANAO (JP)
Application Number:
PCT/JP2021/020610
Publication Date:
December 09, 2021
Filing Date:
May 31, 2021
Export Citation:
Assignee:
ENEOS CORP (JP)
International Classes:
G02B5/02; F21V5/04; G02B3/00
Foreign References:
| JP2017068216A | 2017-04-06 | |||
| JP2011134609A | 2011-07-07 | |||
| JP2017054017A | 2017-03-16 | |||
| JP2005070157A | 2005-03-17 | |||
| JP2018109669A | 2018-07-12 | |||
| JP2020076953A | 2020-05-21 |
Attorney, Agent or Firm:
KAWAKITA Kijuro et al. (JP)
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