Mirror display system

• US 10,148,942 B2
• Filed: 06/03/2015
• Issued: 12/04/2018
• Est. Priority Date: 06/05/2014
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Sakai, Akira, Hasegawa, Masahiro, Hakoi, Hiroyuki, Minoura, Kiyoshi
• Primary Examiner(s): Chwasz, Jade R
• Application Number:
  US15/314,543
• Publication Number:
  US 20170188020A1
• Time in Patent Office: 1,280 Days
• Field of Search: 359839, 359871, 359466, 359467, 359475, 359477, 359 22, 359 23, 359 25, 359 26
• CPC Class Codes: G02F 1/13 based on liquid crystals, e.g. single liquid crystal display cells
• CPC Class Codes: G02F 1/1335 Structural association of cells with optical devices, e.g. polarisers or reflectors
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/302 for viewing without the aid of special glasses, i.e. using autostereoscopic displays
• CPC Class Codes: H04N 13/346 using prisms or semi-transparent mirrors
• CPC Class Codes: H04N 13/366 using viewer tracking

Abstract

A mirror display system that enables simultaneous perception of a mirror image and a video image with suppressed uncomfortable feeling includes a half mirror plate including a half mirror layer; a 3D display device; and a control unit being configured to supply a video signal to the 3D display device. The 3D display device is disposed on the back surface side of the half mirror plate and is configured to display, by the video signal, a video image for the left eye and a video image for the right eye that give a parallax on a display surface of the 3D display device. The parallax is set such that a fused video image of the video image for the left eye and the video image for the right eye is perceived on the back surface side behind the display surface of the 3D display device.

Claims

1. A mirror display system comprising:

a half mirror plate including a half mirror layer;

a 3D display device that displays three-dimensional video images; and

a control unit configured to supply a video signal to the 3D display device, wherein

the 3D display device is disposed on a back surface side of the half mirror plate and is configured to display, by the video signal, a video image for a left eye and a video image for a right eye that give a parallax on a display surface of the 3D display device,

the parallax is set such that a fused video image of the video image for the left eye and the video image for the right eye is perceived on the back surface side behind the display surface of the 3D display device,

the display surface of the 3D display device is parallel to a display surface of the half mirror plate, and

the control unit is configured to set the parallax that satisfies the following formula;

2. The mirror display system according to claim 1,

wherein the parallax is not shorter than 25 mm.

3. The mirror display system according to claim 1,

wherein the control unit is configured to adjust the parallax.

4. The mirror display system according to claim 1, further comprising a length measurement device for measuring the pupillary distance of the viewer,

wherein the control unit is configured to set the parallax in conjunction with the length measurement device.

5. The mirror display system according to claim 1,

wherein the control unit is configured to record the parallax of each viewer.

6. The mirror display system according to claim 1,

wherein the half mirror layer includes a reflective polarizer.

7. The mirror display system according to claim 1,

wherein the 3D display device is a liquid crystal display device.

8. The mirror display system according to claim 1,

wherein the 3D display device is configured to adjust at least one of (A) positions of the video image for the left eye and the video image for the right eye, (B) a state of a barrier, and (C) a state of lenses, in accordance with movement of the viewer.

9. The mirror display system according to claim 1,

wherein the 3D display device and the half mirror plate are connected to one another.