Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
IMAGE DISPLAY UNIT AND HEAD-MOUNTED DISPLAY
Document Type and Number:
WIPO Patent Application WO/2022/045167
Kind Code:
A1
Abstract:
Provided are an image display unit and a heat-mounted display which are compact, have high light utilization efficiency, and have less image quality reduction. The present invention comprises: an image display device; a polarized light diffraction element that diffracts light emitted from the image display device; and a polarization plate that allows transmission of the polarized light diffracted by the polarized light diffraction element but absorbs light not diffracted by the polarized light diffraction element. The polarized light diffraction element is a polarized light diffraction lens having a lens function. When f represents the focal distance of the polarized light diffraction lens and d represents the distance between the image display device and the polarized light diffraction lens, d≤f is satisfied.

Inventors:
SATO HIROSHI (JP)
SAITOH YUKITO (JP)
YONEMOTO TAKASHI (JP)
Application Number:
PCT/JP2021/031091
Publication Date:
March 03, 2022
Filing Date:
August 25, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B27/02; G02B1/08; G02B3/08; G02B3/12; G02B5/18; G02B5/30; G02F1/13; G02F1/1335; G02F1/13363; H04N5/64
Domestic Patent References:
WO2018150773A12018-08-23
Foreign References:
JP2005148655A2005-06-09
JP2000249984A2000-09-14
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
Download PDF: