TWI654448B - Image display device - Google Patents

Abstract

An image display device for displaying a stereoscopic image floating in the air and capable of viewing in an oblique viewing angle, comprising an image display device and a lens array layer. The image display device has a display surface and an image calculation unit, and the image display device can display an image that has not been reconstructed on the display surface by the image calculation unit. The lens array layer is disposed on the display surface of the image display device. The lens array layer includes a base portion and a plurality of lenses. The image displayed on the display surface that has not been reconstructed can be recombined through the lens array layer and recombined into an integrated image. To form a stereoscopic image.

Description

 Image display device  

The invention relates to an image display device, in particular to an image display device which is used for display purposes, and the main field is 3D stereoscopic display, which adopts 3D naked vision technology and is relatively simple and convenient to use.

Press, three-dimensional display device, generally used in the mainstream using two-eye fusion image technology. Generally, the naked-eye three-dimensional display device allows the viewer to view the angle of the display device, or the image depth cannot be far from the display plane. However, in the case of considering some situational conditions, such as an aerial terrain model, a building model, medical 3D training, etc., when the display device is placed horizontally, the viewer's natural viewing angle is an oblique viewing display device. At this time, the general mainstream three-dimensional display technology cannot provide a natural viewing angle to the viewer, causing inconvenience. Moreover, the general three-dimensional display device, the 3D perception viewed on the front side, has only one direction of visual stimulation to the viewer, just like the picture is highlighted or sunk. It is impossible to achieve the feeling that the image is off the plane, and the feeling of floating in the air is realized.

In summary, the present inventors have felt that the above-mentioned defects can be improved, and the present invention has been put forward with great interest in designing and coordinating the above-mentioned defects.

The technical problem to be solved by the present invention is to provide an image display device which can provide a floating display effect and allows a viewer to view a stereoscopic image at an oblique angle.

In order to solve the above technical problem, the present invention provides an image display device for displaying a stereoscopic image floating in the air and capable of viewing in an oblique viewing angle, comprising: an image display device having a display surface and an image calculation a unit that can display an unreconstructed image on the display surface by the image computing unit; and a lens array layer disposed on a display surface of the image display device, the lens array layer includes a a base and a plurality of lenses disposed on one side of the base, the lenses use light having a wavelength ranging from 300 nm to 1100 nm, and the image displayed on the display surface that has not been reconstructed can be focused by the lens array layer and recombined into Integrated imagery to create a stereoscopic image that floats in the air.

The invention has at least the following advantages:

The hardware of the present invention does not require other optical films, and an image display device and a lens array layer, an extremely simple device, can achieve the effect of floating images.

The floating stereoscopic image is to view the sense of suspension of the stereoscopic image. The oblique viewing angle helps the viewer to discriminate the corresponding depth and position perception of the image in the space, and achieve the effect of floating viewing.

For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧Image display device

11‧‧‧ Display surface

12‧‧‧Image calculation unit

13‧‧‧Integrated imagery

2‧‧‧ lens array layer

21‧‧‧ base

22‧‧‧ lens

5‧‧‧ viewers

5’‧‧‧ viewers

1 is a perspective view of an image display device of the present invention.

2 is a schematic plan view showing the forward viewing of the image display device of the present invention.

FIG. 3 is a schematic plan view (1) of oblique viewing of the image display device of the present invention.

4 is a plan view (2) of oblique viewing of the image display device of the present invention.

FIG. 5 is a flow chart of the image display method of the present invention.

FIG. 6 is a schematic diagram of the algorithm matching display hardware control according to the present invention.

Figure 7 is a schematic view showing the relative arrangement of the lens arrays of the display device of the present invention.

Figure 8 is a schematic view showing the staggered arrangement of lens arrays of the display device of the present invention.

Figure 9 is a schematic view showing the focusing of a single lens of the display device of the present invention.

FIG. 10 is a schematic view showing a state of use of another embodiment of the image display device of the present invention.

Figure 11 is a perspective view showing the lens array of the display device of the present invention in a columnar structure.

Figure 12 is a plan view showing the lens array of the display device of the present invention in a columnar structure.

 [First Embodiment]  

The invention provides an image display device, which can be applied to industries such as optoelectronics, medical, military, display, display, educational entertainment and consumer electronics. The image display device can be applied to an active or passive three-dimensional display without limitation. .

As shown in FIG. 1 , the display device includes an image display device 1 and a lens array layer 2, which can change the stereoscopic image displayed by the angle position of the viewer 5 through the change of the display image, so that the viewer 5 can View stereoscopic images at other viewing angles. The structure of the embodiment is divided into two layers, and the device can be placed at any plane, such as a flat space such as a table, a wall or a ceiling.

The image display device 1 has a display surface 11 that can be used to display an image. The lens array layer 2 is disposed on the display surface 11 of the image display device 1, that is, the lens array layer 2 is disposed above the image display device 1. The lens array layer 2 can contact the display surface 11 of the image display device 1, and the lens array layer 2 can also be disposed at a distance from the display surface 11 of the image display device 1, or on the display surface 11 of the image display device 1 and the lens. An intermediate layer is disposed between the array layers 2.

The image display device 1 is disposed on the first layer (lower layer), which is responsible for displaying a planar image that has not been reproduced by light, and the planar image can be redistributed and combined through the lens array of the lens array layer 2 to display the reorganization Three-dimensional image. The image display device 1 of the first layer only needs to display the target image, and thus can be any hardware structure, including a mobile phone, a flat panel or a flat screen, or an image such as printing or engraving, or a projection display type. The type and configuration of the image display device 1 are not limited.

The lens array layer 2 is disposed on the second layer (upper layer), and the lens array layer 2 has the function of regulating the light field, and the lens array layer 2 can adjust the light angle of the three-dimensional object, so that the plane images that have not been reorganized are redistributed and combined. In turn, the viewer 5 sees a three-dimensional image. The curvature of a single lens will be determined by the material nature of the lens, and in combination with the image display device 1 of the first layer, the three-dimensional image content such as the height of the stereoscopic image, the range of the viewing angle, and the sharpness are determined.

In the present embodiment, the lens array layer 2 is made of a material having good optical properties, such as a transparent material such as plexiglass (PPMA), polycarbonate (PC), polyethylene (PE) or glass (Glass). The material of the lens array layer 2 is not limited. The lens array layer 2 includes a base portion 21 and a plurality of lenses 22 disposed on one side of the base portion 21, that is, the lenses 22 are disposed on a side of the base portion 21 away from the image display device 1. The lens array layer 2 The arrangement and configuration are not limited, and the lenses 22 have a focusing function.

The most important feature of the present invention is that the three-dimensional image is obliquely viewed. The so-called oblique viewing means that the viewer 5 is not facing the image display device 1, but can also see the stereoscopic image. In the traditional naked-eye three-dimensional display, most of them have the problem of viewing angle, and the viewer 5 cannot see it at an oblique angle. In the present invention, the oblique viewing is a major feature. As shown in FIG. 2, the viewer 5 is in the direction of the image display device 1 (zero order viewing zone), and the left and right sides respectively have a viewable angle. Restriction, once this perspective is exceeded, the viewer will not see the stereo information that should be seen at the corresponding angle.

In order to achieve oblique viewing of the stereoscopic image, as shown in FIG. 3 and FIG. 4, the 0-order (forward) display mode is no longer used, but the oblique angle display mode is used to converge the light path to the oblique direction. In the direction of the viewer, the viewer 5 can view the stereoscopic image in the oblique direction. 3 and 4 respectively show that the first order viewing zone is set and the second order viewing zone is set, that is, the larger the slope is, the larger the order is, and of course It can be set as a display area such as the third or fourth order. At the same time, the planar image that has not been reconstructed also needs to be adjusted accordingly, and the algorithm mode is explained by the second embodiment. With the image of the contract order, the viewer 5 can view the stereoscopic image at different oblique angles. The way the image is displayed diagonally can be used in many special applications, such as when the display device needs to be hidden, or if the viewer 5 situation is an informal angle.

 [Second embodiment]  

The image display device 1 of the present invention can be of any size as long as the algorithm can be applied, that is, the image display device 1 has an image calculation unit 12, and the image used for the image display device 1 needs to undergo image calculation. The calculation of the method, which is combined with the architecture of the lens array, predicts the various paths of the light walking, and calculates the relative position of the image. FIG. 5 is a flowchart of an image display method according to the present invention, including the following steps:

First, an image display device is provided. The image display device includes an image display device 1 and a lens array layer 2 (shown in FIG. 1). The image display device 1 has a display surface 11 and an image calculation unit 12, The lens array layer 2 is disposed on the display surface 11 of the image display device 1. The lens array layer 2 includes a base portion 21 and a plurality of lenses 22 disposed on one side of the base portion 21; and then coordinate definition (Coordinate definition) Setting the relative position of the hardware, including the relative position of each lens 22 on the lens array layer 2, and the matching of the distance and pixel size of the lens array layer 2 with respect to the image display device 1, and then at the image calculation unit 12 In the calculation, the data of the three-dimensional object to be displayed is placed, and the oblique angle of the three-dimensional object is set, and then ray tracing is performed, and then the image that has not been reconstructed is displayed on the display surface 11 of the image display device 1. data.

Finally, as shown in FIG. 6, the image display device 1 is matched with the calculated image, and the three-dimensional object can be recombined via the lens array layer 2 to be recombined into an integrated image 13 to form a solid image. image. Because of the oblique viewing, the calculated image is slightly different. As shown in Figure 2, Figure 3 and Figure 4, the three-dimensional object sources of the three are all the same object, but because of different viewing angles, the algorithm is implemented. With the display settings at different angles, the resulting image is slightly different. The present invention cooperates with the two-layer structure, and the light can be transmitted from the image display device 1 and re-aggregated into the 3D stereo image through the lens array layer 2 to conform to the ergonomic perspective.

 [Third embodiment]  

The lens array layer 2 of the present invention has a very important correlation with the display effect. As shown in FIG. 7 and FIG. 8 , the arrangement of the lens arrays may be a rectangular arrangement or a hexagonal arrangement, that is, a lens of each adjacent two columns. 22 can be arranged in relative arrangement (as shown in Figure 7) or in an interlaced arrangement (as shown in Figure 8), which can display 3D image information.

The microstructure on the lens array layer 2 is a focusing function lens. The microlens specification will determine the lens focusing ability according to the material refractive index n value, and the light can be used in the wavelength range of 300 nm to 1100 nm. The single lenslet focal length situation is shown in Figure 9, which conforms to the mirror formula: 1/f=(n-1)(1/R1+1/R2)

Where R1 and R2 are the radius of curvature of the two sides of the lens, f is the focal length of the lens, and n is the refractive index of the lens. In addition, the lens diameter ranges from 100um to 5mm for the pixel size of different display devices.

 [Fourth embodiment]  

Referring to FIG. 10, the embodiment is an application method of oblique angle viewing. At both ends of the image display device 1, there are viewers 5 and 5', and the display materials from the opposite side can be separately viewed and utilized. The backlight module can be provided with the front and back images of the same three-dimensional object of the viewers 5 and 5' at the two ends, so as to achieve the stereoscopic display of the multi-view viewer 5, 5'. image. The directional backlight is designed to provide a certain angle of light to avoid excessive divergence angles and image interference. The calculated image needs to be pre-calculated to display the display area of the stereoscopic image providing the angle. This method can solve the problem of insufficient viewing angle of the conventional naked-sight display.

 [Fifth Embodiment]  

Referring to FIG. 11 and FIG. 12, the lens 22 of the lens array layer 2 may also have a columnar structure, that is, the lenses 22 have a columnar body, and thus have the characteristics of a lens in one dimension direction and the other direction.

 [Sixth embodiment]  

In addition, the image display device 1 of the present invention can also be a stereoscopic display with human eye tracking. The present invention is applied to this embodiment to give a single viewer a larger viewing angle, and the sensing element can be used to track the human eye in the image. Position, according to the tracked position area, calculate the angle direction of the corresponding viewer facing the image display device 1, and then detect the relative angle of the human eye to the image display device 1, and then provide the picture with the angle calculation A stereoscopic image corresponding to the movement of the human eye. In this way, the corresponding stereoscopic image can be given according to the position of the viewer, and the problem that the conventional naked-eye stereoscopic display device has insufficient viewing angle can be solved.

Therefore, the present invention provides an image display device that can be applied to an oblique viewing angle. With the hardware arrangement, the direction of light travel of the pixels at various positions in the device through the optical element can be controlled. The hardware system of the present invention is a simple optical component, including an image display device and a lens array layer, which can be packaged into a kit. With the designed pixel size, system gap, lens size and focal length, the integrated image principle is used. The special algorithm's screen output screen signal can make it appear in the stereo space.

The hardware of the present invention does not require other optical films, and an image display device and a lens array layer, an extremely simple device, can achieve the effect of floating images. The display method of the present invention is different from the general integrated image calculation algorithm, and can directly give the calculated image corresponding to the angle to the oblique viewing angle.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, the equivalent variations of the present invention and the contents of the drawings are all included in the scope of protection of the present invention. Within, combined with Chen Ming.

Claims (5)

An image display device for displaying a stereoscopic image floating in the air and capable of viewing in an oblique view, comprising: an image display device having a display surface and an image calculation unit, and calculating the calculation unit in the image Inserting the data of the three-dimensional object to be displayed, setting the oblique angle of the three-dimensional object display, and performing ray tracing, so that the image display device can display the unreconstructed image on the display surface through the image calculation unit. And a lens array layer disposed on the display surface of the image display device, the lens array layer includes a base portion and a plurality of lenses, wherein the lenses are disposed on one side of the base, and the lenses use a wavelength range of light From 300 nm to 1100 nm, the image displayed on the display surface that has not been reconstructed can be focused by the lens array layer and recombined into an integrated image to form a stereoscopic image floating in the air. The image display device of claim 1, wherein the lenses of each adjacent two columns are arranged in an opposite or staggered arrangement. The image display device of claim 1, wherein the lenses are cylindrical. The image display device of claim 1, wherein the lenses have a diameter of 100 um to 5 mm, and the lenses conform to the lens formula: 1/f=(n-1)(1/R1+1/R2), wherein R1 and R2 are the radii of curvature on both sides of the lens, f is the focal length of the lens, and n is the refractive index of the lens. The image display device of claim 1, wherein the image display device is a stereoscopic display having human eye tracking.