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Patent Searching and Data


Title:
VIRTUAL IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/240230
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a technology for improving the visibility of a presented virtual image. A virtual image display device (10) according to the present invention presents a virtual image to a user via a virtual image presentation board (22). The virtual image display device (10) is provided with: a display unit (12) that generates image display light; and a projection optical system (14) that includes a projection mirror (16) for projecting the image display light toward the virtual image presentation board (22). The projection optical system (14) is configured such that, in a synthesis optical system (20) formed of the virtual image presentation board (22) and the projection optical system (14), a meridional in-plane focal point (26m) and a sagittal in-plane focal point (26s) differ from each other. The virtual image display device (10) is configured such that, when a first distance of the virtual image viewed from the user, to a sagittal image plane position (50s) is defined as D1 and a second distance of the virtual image to a meridional image plane position (50m) is defined as D2, the difference between the inverse of the first distance D1 and the inverse of the second distance D2 is equal to or less than 0.25 [m-1].

Inventors:
ITO SHIGEAKI (JP)
Application Number:
PCT/JP2019/023542
Publication Date:
December 19, 2019
Filing Date:
June 13, 2019
Export Citation:
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Assignee:
JVC KENWOOD CORP (JP)
International Classes:
G02B27/01; B60K35/00
Foreign References:
JPH05341226A1993-12-24
JP2018036360A2018-03-08
CN105301775A2016-02-03
JP2019012190A2019-01-24
Attorney, Agent or Firm:
MORISHITA Sakaki (JP)
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