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Title:
DIFFRACTION OPTICAL ELEMENT, MANUFACTURING METHOD THEREFOR, ACRYLIC RESIN COMPOSITION FOR FORMING DIFFRACTION OPTICAL ELEMENT, AND ILLUMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/004406
Kind Code:
A1
Abstract:
The present invention provides a diffraction optical element which has resistance to sticking under a wet heat condition, and in which a pattern is rarely torn, a manufacturing method therefor, an acrylic resin composition for forming the diffraction optical element, and an illumination device. This diffraction optical element shapes light from a light source, and is provided with, on at least one surface side of a transparent substrate, a diffraction grating part in which one or more high refractive index protruding sections protruding from the surface of the transparent substrate, and one or more low refractive index sections are disposed, wherein the high refractive index protruding section is formed by a cured product of an acrylic resin composition, and the storage elastic modulus (E') of the cured product at 60°C and a relative humidity of 95% is 0.90×109-2.6×109 Pa inclusive.

Inventors:
YOSHIOKA HIDENORI (JP)
BAN YUKIKO (JP)
NAGAMATSU NORIKO (JP)
Application Number:
PCT/JP2018/024734
Publication Date:
January 03, 2019
Filing Date:
June 28, 2018
Export Citation:
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Assignee:
DAINIPPON PRINTING CO LTD (JP)
International Classes:
G02B5/18; B29C59/02; C08F2/48; C08F290/06
Domestic Patent References:
WO2017119400A12017-07-13
Foreign References:
JP2005084561A2005-03-31
JP2007178724A2007-07-12
JP2016112869A2016-06-23
JP2015087762A2015-05-07
JP2004004515A2004-01-08
JP2017065173A2017-04-06
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
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