Title:
LIGHT DIFFUSING FORMED BODY, TRANSPARENT SCREEN FILM, AND METHOD FOR EVALUATING LIGHT DIFFUSING FORMED BODY
Document Type and Number:
WIPO Patent Application WO/2019/208769
Kind Code:
A1
Abstract:
The present invention provides, for example, a light diffusing formed body and a transparent screen film for which viewing angle characteristics and color reproducibility are particularly exceptional. To that end, a light diffusing formed body according to the present invention is made to include a transparent resin binder and light-diffusing particles and is made to be such that when a flat sample of the light diffusing formed body is placed at a reference position and irradiation light is irradiated toward the point of intersection between a perpendicular, which is perpendicular to the flat sample placed at the reference position, and the flat sample at an axis of incidence inclined by 10° in relation to the perpendicular, the degree D of diffusion calculated using equation (1) from a measured value for the relative transmitted light intensity of the light that has passed through the flat sample is at least 20. (In equation (1), the values of D, I5, I20, and I70 are as defined in the description.)
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Inventors:
AKATSUKA WATARU (JP)
Application Number:
PCT/JP2019/017942
Publication Date:
October 31, 2019
Filing Date:
April 26, 2019
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
G02B5/02; C08K3/20; C08L101/12; G01J3/46; G01N21/59; G03B21/60
Domestic Patent References:
| WO2007032469A1 | 2007-03-22 |
Foreign References:
| JP2017128727A | 2017-07-27 | |||
| JP2016170907A | 2016-09-23 | |||
| JP2018036662A | 2018-03-08 | |||
| JPH09306217A | 1997-11-28 |
Attorney, Agent or Firm:
KOBAYASHI Hiroshi et al. (JP)
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