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Patent Searching and Data


Title:
OPTICAL FILTER, OPTICAL DEVICE, AND HEAD-MOUNTED DISPLAY
Document Type and Number:
WIPO Patent Application WO/2021/054099
Kind Code:
A1
Abstract:
Provided are an optical filter, an optical device, and a head-mounted display that have a high front-direction light transmittance and a broad real field of view. The present invention includes a first anisotropic absorbance layer, a first phase difference layer, and a second anisotropic absorbance layer in the stated order. Each of the first anisotropic absorbance layer and the second anisotropic absorbance layer includes a dichroic pigment, the absorbance axis of the dichroic pigment being perpendicular to a main surface. In the first phase difference layer, the dependence of retardation on a polar angle is asymmetrical about a normal direction with respect to incident light on at least one incidence surface including a line normal to the layer surface.

Inventors:
ISHIYAMA JUN (JP)
MITOBE FUMITAKE (JP)
YANAI YUJIRO (JP)
Application Number:
PCT/JP2020/032839
Publication Date:
March 25, 2021
Filing Date:
August 31, 2020
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B5/30; B32B7/023; G02B27/02
Domestic Patent References:
WO2017199656A12017-11-23
WO2018003380A12018-01-04
WO2017208617A12017-12-07
Foreign References:
JP2008165201A2008-07-17
JP2019132895A2019-08-08
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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