Title:
OPTICAL ELEMENT AND SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/022434
Kind Code:
A1
Abstract:
The problem addressed by the present invention is to provide a novel optical element that can be used for a sensor, or the like, and a sensor that employs the optical element. To solve the problem: the optical element is provided with a cholesteric liquid crystal layer; the cholesteric liquid crystal layer includes a liquid crystal alignment pattern in which the orientation of an optic axis pertaining to a liquid crystal compound changes while rotating continuously along at least one direction within a plane; and when a cross section cut in the thickness direction along the one direction in which the orientation of the optic axis rotates is observed using a scanning electron microscope, the cholesteric liquid crystal layer includes, along the one direction in which the orientation of the optic axis rotates, a portion where a bright line and a dark line derived from a cholesteric liquid crystal phase are discontinuous.
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Inventors:
SAITOH YUKITO (JP)
SATO HIROSHI (JP)
SATO HIROSHI (JP)
Application Number:
PCT/JP2019/029226
Publication Date:
January 30, 2020
Filing Date:
July 25, 2019
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; G01D5/26
Domestic Patent References:
| WO2016194961A1 | 2016-12-08 | |||
| WO2015030176A1 | 2015-03-05 |
Foreign References:
| JP2014528597A | 2014-10-27 | |||
| JP2006113513A | 2006-04-27 | |||
| JP2002189124A | 2002-07-05 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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