Stereoscopic display device with front view and rear view

Abstract

In order to solve the problem that a viewer is not limited by a viewpoint distance, the invention provides a stereoscopic display device with the front view and the rear view simultaneously. According to the three-dimensional display device with the front view and the rear view simultaneously provided by the invention, a traditional view point is changed into a front view and rear view simultaneously, a viewer is not limited by the distance, the viewer can view the same display image by moving the position forwards and backwards, and a good viewing effect can be achieved in a viewing range area.

Description

Technical Field

[0001] The present invention relates to display technology, and particularly to a stereoscopic display technology for a field of view. Background Art

[0002] In traditional 3D stereoscopic display, the parallax images to be viewed are converged at a point to form a viewing point, and the viewing point has a fixed distance position. Therefore, a traditional stereoscopic display requires the viewer to be at the viewing point to achieve a good viewing effect. To solve the problem that the viewer is not restricted by the viewing point distance, the present invention proposes a stereoscopic display device with front-to-back same view. The stereoscopic display device with front-to-back same view proposed by the present invention changes the traditional viewing point to form a front-to-back same view range. The viewer is not restricted by the distance, and can view the same display image by moving the position back and forth, and can achieve a good viewing effect within the viewing range area. Summary of the Invention

[0003] To solve the problem that the viewing point of traditional stereoscopic display has a fixed distance and is not conducive to free viewing at the front and back positions, the present invention proposes a stereoscopic display device with front-to-back same view.

[0004] The structure of the stereoscopic display device with front-to-back same view is composed of a light source panel, a transparent liquid crystal display panel, a first aperture stop, a second aperture stop, a mirror array and a lenticular grating.

[0005] The light source panel, the transparent liquid crystal display panel, the first aperture stop, the second aperture stop, the mirror array and the lenticular grating are arranged in sequence from back to front.

[0006] The light source panel provides light to propagate the pixel information on the transparent liquid crystal display panel forward. Using two aperture stops, namely the first aperture stop and the second aperture stop, can efficiently filter the crosstalk light. The same parallax image information is propagated to one mirror on the mirror array. The mirrors in the mirror array are double-sided mirrors and are placed close to and perpendicular to the lenticular grating. All the converged light rays after being filtered by the aperture stops reach the mirror, and after reflection, enter the lenticular grating. The lenticular grating converts the light rays incident at different angles into parallel light and outputs it, thereby forming a front-to-back same view range. The size of each unit lens of the lenticular grating needs to be equivalent to the size of the human eye pupil to ensure that all the image information of the parallax map can be received simultaneously and a complete parallax image can be viewed. The average size of a conventional human eye pupil is 4mm, and the diameter of each unit lens of the lenticular grating is l 1 4mm.

[0007] The present invention combines a mirror and a lenticular grating to change the viewing point where the light rays converge into a viewing range where the light rays propagate in parallel. The human eye is not restricted by the front-to-back distance within the viewing range and can achieve a good viewing effect.

[0008] Optionally, the second aperture stop can be replaced by a lenticular grating.

[0009] Based on the above principle, we propose a stereoscopic display device with the same front and rear viewing, which can transform the traditional fixed-distance viewing point into a viewing range not limited by distance, and improve the freedom of the viewer's front and rear viewing positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of the present invention.

[0011] Figure 2 It is a schematic diagram of the display of the present invention within the viewing range.

[0012] Reference Signs: 100 - light source panel; 200 - transparent liquid crystal display panel; 300 - first aperture; 400 - second aperture; 500 - mirror array; 600 - lenticular grating; 501 - a mirror of the mirror array; 601 - a lenticular lens unit, 111 - the first parallax image pixel unit; 112 - the second parallax image pixel unit; 113 - the third parallax image pixel unit; 114 - the fourth parallax image pixel unit.

[0013] It should be understood that the above drawings are only schematic and are not drawn to scale. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The structure of the stereoscopic display device with the same front and rear viewing is composed of a light source panel 100, a transparent liquid crystal display panel 200, a first aperture 300, a second aperture 400, a mirror array 500 and a lenticular grating 600.

[0015] Figure 1 It is a schematic structural diagram of the stereoscopic display device with the same front and rear viewing provided in this embodiment. In the figure, the x coordinate represents the horizontal direction in space, the y coordinate represents the vertical direction in space, and z represents the direction perpendicular to the x - y plane. The light source panel 100, the transparent liquid crystal display panel 200, the first aperture 300, the second aperture 400, the mirror array 500 and the lenticular grating 600 are arranged in sequence from back to front.

[0016] Figure 2Schematic diagram of the display of the present invention within the viewing range. The light source panel 100 provides light to propagate the pixel information on the transparent liquid crystal display panel 200 forward. Two diaphragms, namely the first diaphragm 300 and the second diaphragm 400, can efficiently filter crosstalk light. The same parallax image information is propagated to one of the mirrors on the mirror array 500. The mirrors in the mirror array 500 are double-sided mirrors and are placed close to and perpendicular to the lenticular grating 600. All the converged light rays after passing through the diaphragm filtering reach the mirror. The mirror reflects the pixel information light rays and propagates them to the lenticular grating 600. The lenticular grating 600 converts the light rays incident at different angles into parallel light for output, thus forming a front and rear same viewing range. The size of each unit lens of the lenticular grating 600 needs to be equivalent to the size of the human eye pupil to ensure that all the image information of the parallax map can be received simultaneously and a complete parallax image can be viewed. The average size of a conventional human eye pupil is 4mm, and the diameter of each unit lens of the lenticular grating 600 is l 1 4mm.

[0017] The present invention combines a mirror and a lenticular grating 600 to change the viewpoint where light rays converge into a viewing range where light rays propagate in parallel. The human eye is not restricted by the front and rear distances within the viewing range, and a good viewing effect can be achieved.

Claims

1. A stereoscopic display device with front and rear same-view, characterized in that: The structure of the front-and-back binocular stereoscopic display device is composed of a light source panel, a transparent liquid crystal display panel, a first diaphragm, a second diaphragm, a mirror array, and a lenticular grating; The light source panel, the transparent liquid crystal display panel, the first diaphragm, the second diaphragm, the mirror array, and the lenticular grating are arranged in sequence from back to front; The light source panel provides light to forward the pixel information on the transparent liquid crystal display panel. By using two diaphragms, namely the first diaphragm and the second diaphragm, crosstalk light can be efficiently filtered. The same parallax image information is propagated to one of the mirrors on the mirror array. The mirrors in the mirror array are double-sided mirrors and are placed closely and perpendicular to the lenticular grating. All the converged light after being filtered by the diaphragms reaches the mirrors. After reflection, the light enters the lenticular grating. The lenticular grating converts the light incident at different angles into parallel light for output, thus forming a front-back same-view range. The size of each unit lens of the lenticular grating needs to be equivalent to the size of the human eye pupil to ensure that all the image information of the parallax map can be received simultaneously and a complete parallax image can be viewed. The average size of a conventional human eye pupil is 4mm. Set the diameter of each unit lens of the lenticular grating l 1 to be 4mm.

2. The stereoscopic display device with front and rear same view as claimed in claim 1, wherein: The second diaphragm can be replaced by a lenticular grating.

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