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Display device

A display device and display surface technology, applied in projection devices, identification devices, instruments, etc., can solve the problems of inability to image, observers cannot observe at the same time, multiple observers cannot observe at the same time, etc., and achieve the effect of expanding the range of viewpoints

Active Publication Date: 2017-10-31
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A virtual image cannot be imaged near the light guide, therefore, the observer cannot observe the virtual image at the same time with both eyes at the same position
In addition, multiple observers cannot observe the virtual image at the same time at the same location

Method used

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Examples

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Embodiment Construction

[0048] Hereinafter, a display device according to an embodiment of the present invention will be described with reference to the drawings. This display device includes a plate-shaped light guide plate, and an image display device disposed so as to face an incident surface formed on a side wall of the light guide plate. Moreover, between the image display device and the incident surface, an imaging lens that converts light from the image display device into converging light on the surface of the light guide plate parallel to the side opposite to the observer, that is, the exit surface, is arranged. A collimator lens that collimates the light from the image display device on the surface perpendicular to the exit surface. In addition, the image display device and the collimator lens constitute an image projection unit. In addition, a plurality of prisms are formed on the diffuser surface on the side opposite to the output surface of the light guide plate, and the plurality of pr...

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PUM

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Abstract

A display device (1) has: image projection units (11, 13); a light guide plate 14 that has a plurality of deflecting sections 141 arranged along the propagation direction of light that has been emitted from the image projection units and that has entered inside via an incident surface (14a), each deflecting section causing light emitted from mutually different positions, or toward mutually different directions to be emitted from an exit surface (14c) at mutually different angles in the propagation direction, in a direction orthogonal to the longitudinal direction of the incident surface 14a in a prescribed region in which an image to be projected by the image projection units is represented; and a mask (15) for shielding light other than light traveling toward a prescribed viewpoint among the light emitted from the exit surface 14c via each deflecting section. The image projection units collimate the light emitted from the prescribed region in a direction orthogonal to the longitudinal direction of the incident surface (14a).

Description

technical field [0001] The present invention relates to a display device capable of projecting images in the air. Background technique [0002] Currently, a display device that projects images in the air is being studied. In particular, in such a display device, a display device that transmits an image projected in the air using a light guide plate has been proposed so that other objects and an image projected in the air can be seen at the same time (for example, refer to Patent Document 1). [0003] For example, the display device disclosed in Patent Document 1 includes a display element that emits image display light, an emission mechanism having an optical system that forms a virtual image of an observation object, and a light guide. The light guide is a substrate, which has: a first surface, a second surface opposite to the first surface, a third surface different from the first surface and the second surface, and an emission surface arranged in front of the observer's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22G02B6/00G02B17/08G09F9/00
CPCG02B6/003G02B6/0031G02B6/0038G02B6/00G02B6/0051G02B6/0053G02B27/30G03B21/147G03B21/28G03B35/24G02B30/27
Inventor 篠原正幸
Owner ORMON CORP