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Title:
OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/021578
Kind Code:
A1
Abstract:
This optical device (1) comprises a first substrate (10), a second substrate (20) which is positioned facing the first substrate (10), a first electrode (30) which is positioned on the second substrate (20) side of the first substrate (10), a textured structure (50) positioned on the second substrate (20) side of the first electrode (30), a second electrode (41) positioned on the first substrate (10) side of the second substrate (20), and a variable refractive index layer (70) which is positioned between the textured structure (50) and the second electrode (41), and the optical absorbance and/or refractive index of which varies according to the voltage applied between the first electrode (30) and the second electrode (41). The variable refractive index layer (70) comprises an insulating liquid (71) and first microparticles (72a) and second microparticles (72b). The first microparticles (72a) are charged with a first polarity, and the second microparticles (72b) have light-shielding properties and are charged with a second polarity. The refractive index of the first microparticles (72a) is higher than the refractive index of the insulating liquid (71).

Inventors:
OZAKI CHIGUSA
SUZUKA YUKO
OTA MASUYUKI
Application Number:
PCT/JP2018/018564
Publication Date:
January 31, 2019
Filing Date:
May 14, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G02F1/167; G02B5/00; G02B5/02; G02B26/08
Domestic Patent References:
WO2014146937A22014-09-25
WO2018100957A12018-06-07
Foreign References:
JP2014035385A2014-02-24
JP2012027162A2012-02-09
JP2013015613A2013-01-24
JP2007531016A2007-11-01
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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