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Title:
OPTICAL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/145446
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an optical system that is capable of improving luminance of a main image while eliminating image ghosting. This problem is solved by an optical system comprising: an image display device that emits an image; a linear polarizer through which light associated with the image passes; a first quarter-wave plate that receives light from the linear polarizer; a half mirror; a reflective polarizer; and a second quarter-wave plate between the reflective polarizer and the half mirror, wherein the retardance of the first quarter-wave plate and the retardance of the second quarter-wave plate are equal.

Inventors:
YONEMOTO TAKASHI (JP)
SAITOH YUKITO (JP)
HAMACHI YOHEI (JP)
ISHIGURO MAKOTO (JP)
Application Number:
PCT/JP2021/001336
Publication Date:
July 22, 2021
Filing Date:
January 15, 2021
Export Citation:
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Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B27/02; G02B5/00; G02B5/30; G02B27/28; G02F1/13; G02F1/13363; G09F9/00; H04N5/64
Domestic Patent References:
WO2019017274A12019-01-24
WO2016043219A12016-03-24
Foreign References:
JP2019215416A2019-12-19
JP2014215360A2014-11-17
JP2010526321A2010-07-29
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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