Title:
HEAD-MOUNTED DISPLAY AND METHOD FOR DESIGNING WIDE-FOCUS LENS USED IN SAME
Document Type and Number:
WIPO Patent Application WO/2020/079906
Kind Code:
A1
Abstract:
Provided is a head-mounted display whereby it is possible to view a stereoscopic image without suffering visual fatigue due to vergence-accommodation conflict. This head-mounted display 1 comprises: a display device 3 for displaying left-eye and right-eye images 3a, 3b on a screen 3c; left-eye and right-eye virtual-image-forming optical systems 4a, 4b respectively arranged for the left-eye and right-eye images on the screen; and left-eye and right-eye wide-focus lenses 5a, 5b in which the focal length is negative and has a range, the wide-focus lenses 5a, 5b being respectively arranged so as to be superposed in the respective optical axis directions relative to the left-eye and right-eye virtual-image-forming optical systems. Virtual images of left-eye and right-eye images formed by the left-eye and right-eye virtual-image-forming optical systems are respectively displayed in a near range by the left-eye and right-eye wide-focus lenses, whereby the allowable levels of vergence and accommodation are expanded in the near field, and stereoscopic images can be viewed in a wide area in the near field without suffering visual fatigue due to the vergence-accommodation conflict.
Inventors:
TAKAKI YASUHIRO (JP)
MIYAJIMA YASUSHI (JP)
MIYAJIMA YASUSHI (JP)
Application Number:
PCT/JP2019/028635
Publication Date:
April 23, 2020
Filing Date:
July 22, 2019
Export Citation:
Assignee:
NATIONAL UNIV CORPORATION TOKYO UNIV OF AGRICULTURE AND TECHNOLOGY (JP)
ITOH OPTICAL IND (JP)
ITOH OPTICAL IND (JP)
International Classes:
G02B27/02; G02B13/16; G02B17/08; G02B25/00; G03B35/20; H04N13/339; H04N13/344; H04N13/346
Domestic Patent References:
| WO2015137165A1 | 2015-09-17 |
Foreign References:
| JP2016024273A | 2016-02-08 | |||
| JP2005227682A | 2005-08-25 | |||
| JP2018084788A | 2018-05-31 | |||
| JP2012078670A | 2012-04-19 | |||
| US20160327793A1 | 2016-11-10 | |||
| JPH09297282A | 1997-11-18 | |||
| JP2016206338A | 2016-12-08 |
Other References:
X. HUH. HUA: "High-resolution optical see-through multi-focal-plane head-mounted display using freeform optics", OPT. EXPRESS, vol. 22, 2014, pages 13896 - 13903
N. PADMANABANR. KONRADT. STRAMERE.A. COOPERG. WETZSTEIN: "Optimizing virtual reality for all users through gaze-contingent and adaptive focus displays", PNAS, vol. 114, 2017, pages 2183 - 2188, XP055402339, DOI: 10.1073/pnas.1617251114
T. SHIBATAJ. KIMD. M. HOFFMANM. S. BANKS: "The zone of comfort: Predicting visual discomfort with stereo displays", J. VISION, vol. 11, no. 8, 2011, pages 1 - 29, XP055171846, DOI: 10.1167/11.8.11
G. MIKULAZ. JAROSZEWICZA. KOLODZIEJCZYKK. PETELCZYCM. SYPEK: "Images with extended focal depth by means of lenses with radial and angular modulation", OPT. EXPRESS, vol. 15, no. 15, 2007, pages 9184 - 9193
J. SOCHACKIA. KOLODZIEJCZYKZ. JAROSZEWICZS. BARA: "Nonparaxial design of generalized axicons", APPL. OPT., vol. 31, 1992, pages 5326 - 5330, XP000294493, DOI: 10.1364/AO.31.005326
N. DAVIDSONA. A. FRIESEME. HASMAN: "Holographic axilens: high resolution and long focal depth", OPT. LETT., vol. 16, 1991, pages 523 - 525, XP000179792
N. PADMANABANR. KONRADT. STRAMERE.A. COOPERG. WETZSTEIN: "Optimizing virtual reality for all users through gaze-contingent and adaptive focus displays", PNAS, vol. 114, 2017, pages 2183 - 2188, XP055402339, DOI: 10.1073/pnas.1617251114
T. SHIBATAJ. KIMD. M. HOFFMANM. S. BANKS: "The zone of comfort: Predicting visual discomfort with stereo displays", J. VISION, vol. 11, no. 8, 2011, pages 1 - 29, XP055171846, DOI: 10.1167/11.8.11
G. MIKULAZ. JAROSZEWICZA. KOLODZIEJCZYKK. PETELCZYCM. SYPEK: "Images with extended focal depth by means of lenses with radial and angular modulation", OPT. EXPRESS, vol. 15, no. 15, 2007, pages 9184 - 9193
J. SOCHACKIA. KOLODZIEJCZYKZ. JAROSZEWICZS. BARA: "Nonparaxial design of generalized axicons", APPL. OPT., vol. 31, 1992, pages 5326 - 5330, XP000294493, DOI: 10.1364/AO.31.005326
N. DAVIDSONA. A. FRIESEME. HASMAN: "Holographic axilens: high resolution and long focal depth", OPT. LETT., vol. 16, 1991, pages 523 - 525, XP000179792
Attorney, Agent or Firm:
IIDA, Akio et al. (JP)
Download PDF:
Previous Patent: ELECTROCONDUCTIVE MATERIAL, MOLDED ARTICLE, AND ELECTRONIC COMPONENT
Next Patent: CHECK-IN DETERMINING DEVICE
Next Patent: CHECK-IN DETERMINING DEVICE