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Patent Searching and Data


Title:
DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/199574
Kind Code:
A1
Abstract:
A display device (1) includes: an image-light emitting part (20) that emits image-light representing an image; and a light guide (10). The display device displays a virtual image corresponding to the image-light image emitted from the light guide (10). The light guide (10) includes: a first incidence surface (31a) at which the image light is incident; and a second emission surface (41b) that emits the image light. Additionally, the light guide (10) includes: a second emission optical element (43) that is disposed along the second emission surface (41b) and that emits, at a predetermined emission angle, a portion of the image light by diffracting the image light each time the image light enters the second emission optical element (43) from a predetermined direction. The image light is emitted from the second emission optical element (43) such that the emission angles in predetermined regions of the second emission optical element (43) differ from each other, and as a result the image light diverges. A divergence degree that represents such degree of divergence differs in each predetermined region depending on the position of the virtual image.

Inventors:
MORI TOSHIYA
KASAZUMI KEN'ICHI
Application Number:
PCT/JP2021/001118
Publication Date:
October 07, 2021
Filing Date:
January 14, 2021
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B60K35/00; B60R11/02; G02B5/32; G02B27/01; G09F19/12
Attorney, Agent or Firm:
NII, Hiromori et al. (JP)
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