CN215494384U - Naked eye three-dimensional display device - Google Patents

Abstract

The application provides a bore hole three-dimensional display device, includes: at least one pair of a first optical element and a second optical element; the at least one pair of first optical elements receives the image light, the image light is emitted from the at least one pair of first optical elements and then reflected by the first reflecting mirrors, and the reflected image light passes through the second optical elements and the second reflecting mirrors and is incident to human eyes for imaging. The technical scheme of the application solves the technical problems that the naked eye display device is integrated and portable, the angle can be adjusted according to the user requirement, no special requirements are required on the screen, the cost is low and the like.

Description

Naked eye three-dimensional display device

Technical Field

The application relates to the technical field of three-dimensional display, in particular to a naked eye three-dimensional display device.

Background

Current display technologies can be divided into two main categories: flat panel display technology and projection display technology. The flat panel display technology is usually to use each pixel point of the liquid crystal screen to emit light directly, and each pixel point is observed directly by eyes to obtain an image. The projection display technology uses a small high-brightness image, the small high-brightness image is converted into an enlarged real image through a convergent lens, the enlarged real image is projected onto a screen for diffuse reflection, and then the image is observed by human eyes. Since the screen is diffusely reflective, the existing projection display technology is suitable for many people to watch the same content, but a large amount of light is wasted. There are also other Display technologies that project directly to the human eye, such as the retina Scan Display (Retinal Scan Display) technology, but these methods currently require a screen to be placed in close front of each eye.

The 3D display technology can realize a display technology for realistic reproduction of a stereoscopic scene, which can provide different parallax images to human eyes, respectively, thereby making a person stereoscopic. The current three-dimensional display technology can be divided into a three-dimensional display technology requiring wearing of specific glasses and a three-dimensional display technology for direct viewing with the naked eye. No matter special glasses need to be worn or the glasses need to be directly watched by naked eyes, the basic principle is that images projected on left and right eyes are different, so that visual depth difference is caused, information is superposed after brain processing, and an image with a three-dimensional effect is formed.

Currently, most of the mainstream three-dimensional display technologies require a special screen. Such as: shutter-type three-dimensional display technology uses a screen with a screen refresh rate of at least 120 hz. Because the technology mainly depends on the difference between the two frames before and after the screen is played, namely, one frame is projected to the right eye and the next frame is projected to the left eye, the three-dimensional vision is generated by alternate circulation. A screen refresh rate higher than or equal to 120Hz allows the viewer to perceive the video as smooth. The other polarized three-dimensional display commonly used in movie theaters has very high screen brightness requirements because the light selectively transmitted through the left and right lenses of the glasses with specially selected polarized light is much reduced. And the current mainstream three-dimensional display equipment is heavier because a special display is usually required to be integrated, so that the three-dimensional display equipment is inconvenient to carry and expensive.

The statements in this background section merely represent techniques known to the public and are not, of course, representative of the prior art.

SUMMERY OF THE UTILITY MODEL

The application aims at providing a naked eye three-dimensional display device, and the problems that the cost is low, the device is portable and small in size, the angle can be adjusted according to the requirements of a user, and no special requirements are required on a screen are solved.

According to an aspect of the present application, there is provided a naked eye three-dimensional display device including: at least one pair of a first optical element and a second optical element; the at least one pair of first optical elements receives the image light, the image light is emitted from the at least one pair of first optical elements and then reflected by the first reflecting mirrors, and the reflected image light passes through the second optical elements and the second reflecting mirrors and is incident to human eyes for imaging.

According to some embodiments, the image light reflected by the first reflector is incident on the second optical element, and the image light emitted from the second optical element is reflected by the second reflector and is incident on the human eye for imaging.

According to some embodiments, the image light reflected by the first mirror is incident on the second mirror, and the image light reflected by the second mirror is incident on a human eye to be imaged through the second optical element.

According to some embodiments, each pair of first optical elements comprises 2 converging lenses.

According to some embodiments, the second optical element comprises a fresnel lens.

According to some embodiments, the naked eye three-dimensional display device further comprises: a first support configured to be adjustable for placement of an image light source; a second holder configured to be movable for disposing the at least one pair of first optical elements; and the third support is used for fixing the first reflector and the second optical element, and one end of the third support, which is close to the second optical element, is movably connected with the second reflector.

According to some embodiments, parameters of the at least one pair of image light sources, the at least one pair of first optical elements, and the second mirror are adjustable according to different viewing metrics.

According to some embodiments, the viewing metrics include viewing distance and viewing angle, the parameters of the at least one pair of first optical elements include size, focal length and position of the principal axis, the parameters of the second mirror include size, angle, reflectivity, and the parameters of the at least one pair of image light sources include position relative to the at least one pair of first optical elements, focal length and size of the projected image.

According to some embodiments, the images of each pair of image light sources are displayed on the same screen or on two screens, each pair of image light sources being disposed opposite to the at least one pair of first optical elements.

According to some embodiments, the angle of the second mirror is adjustable manually or electrically.

According to an aspect of the present application, there is provided a naked eye three-dimensional display device including: at least one pair of a first optical element and a second optical element; the first reflector receives image light, the reflected image light enters the at least one pair of first optical elements, and the image light emitted from the at least one pair of first optical elements enters human eyes for imaging through the second optical element after being reflected by the second reflector.

According to some embodiments, each pair of first optical elements comprises 2 converging lenses; the second optical element includes a fresnel lens.

According to some embodiments, the naked eye three-dimensional display device further comprises: a first support configured to be adjustable for placement of an image light source; a second holder configured to be movable for disposing the at least one pair of first optical elements; and the third support is used for fixing the first reflector and the second optical element, and one end of the third support, which is close to the second optical element, is movably connected with the second reflector.

Based on the naked eye three-dimensional display device, no special requirements are made on the screen, and the cost is reduced, including but not limited to a mobile phone screen or a television screen. The device does not need to integrate a screen, and the screen of a user can be realized, such as any mobile phone screen, thereby improving portability and reducing cost. And can be according to the position of user's eyes, through the angle of adjusting the speculum to change the light of reflection, make viewer more comfortable and convenient. And the two-dimensional/three-dimensional image switching is convenient, and can be realized only by changing the playing content of the image. The visual range is a cone, and images cannot be seen theoretically by other angles, so that the privacy of the display technology is good.

Above-mentioned fresnel lens of adjustable parameter uses arbitrary screen in the cooperation, through 2 speculum, light reflection to lens on, the adjustment light path makes it form the return circuit in a space, and effectual three-dimensional space that utilizes for the instrument takes up an area of for the confined device that the observer observed makes things convenient for.

In order to realize two-dimensional/three-dimensional switchable playing, different parts of a screen can display the same image in two dimensions.

For a better understanding of the nature and technical content of the present application, reference should be made to the following detailed description and accompanying drawings, which are provided to illustrate the present application and are not intended to limit the scope of the present application in any way.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this disclosure, serve to provide a further understanding of the disclosure. The exemplary embodiments of the present disclosure and their description are provided to explain the present disclosure and not to limit the present disclosure. In the drawings:

fig. 1 illustrates a structural plan view of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

Fig. 2 illustrates a schematic diagram of a structure and an optical path principle of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

Fig. 3 to 5 illustrate schematic structural views of naked eye three-dimensional display devices according to example embodiments of the present application.

Fig. 6 shows a schematic diagram of an optical path of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

Fig. 7 illustrates an optical path schematic diagram of an independent viewing characteristic of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other means, components, materials, devices, or the like. In such cases, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

The technical principle of the application is similar to that of three-dimensional display, but the application has the following differences: firstly, a display device with a high refresh rate is not needed, and a common screen is only needed; and the angle is adjustable, so that a viewer can conveniently find the optimal viewing position. The technical scheme of the application overcomes the defects of the prior art, and although the characteristic of independent display and the high-quality image can be achieved only when the human eyes are near a specific position, the position can be matched with the eyes of a user by adjusting the reflecting lens, so that the convenience is improved. By utilizing the characteristic that the images seen by the eyes can be independently controlled, the three-dimensional images are respectively projected to the left eye and the right eye, and then the three-dimensional display can be realized. Otherwise, the common two-dimensional display can be realized by playing the same image which is completely the same when different parts of the screen are played. The functions of the lens and the reflector can also be realized by an off-axis Fresnel lens coated with a reflecting film.

Embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, and a naked eye three-dimensional display device according to an embodiment of the present disclosure will be described in detail.

Fig. 1 illustrates a structural plan view of a naked eye three-dimensional display device according to an exemplary embodiment of the present application. Fig. 2 illustrates a schematic diagram of a structure and an optical path principle of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

As shown in fig. 1-2, according to an exemplary embodiment of the present application, the present application discloses a naked eye three-dimensional display device including at least one pair of a first optical element 2,3, a second optical element 4, a first mirror 7, and a second mirror 8.

The user provides at least one pair of image light sources 1 for projecting image light. The at least one pair of first optical elements 2 and 3 receives the image light, and after the image light is emitted from the at least one pair of first optical elements 2 and 3, the image light is reflected by the first reflecting mirror 7, and the reflected image light is emitted into the human eyes 5 and 6 through the second optical element 4 and the second reflecting mirror 8 to be imaged.

Fig. 3 to 5 illustrate schematic structural views of naked eye three-dimensional display devices according to example embodiments of the present application.

According to the embodiment of the application, the naked eye three-dimensional display device can transmit image light to image in three paths according to the optical path structure which realizes the same imaging effect.

As shown in fig. 3, the image light enters at least one pair of first optical elements 2 and 3, exits from at least one pair of first optical elements 2 and 3, is reflected by a first mirror 7, and enters human eyes 5 and 6 in two cases. In the first case, the image light reflected by the first reflecting mirror 7 enters the second optical element 4, and the image light emitted from the second optical element 4 is reflected by the second reflecting mirror 8 and then enters the human eyes 5 and 6 to be imaged. In the second case, as shown in fig. 4, the image light reflected by the first reflecting mirror 7 is incident on the second reflecting mirror 8, and the image light reflected by the second reflecting mirror 8 is incident on the human eyes 5 and 6 via the second optical element 4 to be imaged.

In the third case, as shown in fig. 5, the first reflecting mirror 7 receives the image light, the reflected image light enters the at least one pair of first optical elements 2 and 3, and the image light emitted from the at least one pair of first optical elements 2 and 3 enters the human eye through the second optical element 4 after being reflected by the second reflecting mirror 8.

According to the embodiment of the application, the naked eye three-dimensional display device further comprises a first support 14, a second support 13 and a third support 12.

One end of the first support 14, the second support 13 and the third support 12 is arranged on the platform plane 9 of the naked eye three-dimensional display device.

The first support 14 is configured to be adjustable for placement of the image light sources and may be a screen for generating at least one pair of image light sources 1. The second holder 13 is configured to be movable for arranging at least one pair of the first optical elements 2, 3. The third bracket 12 is used for fixing one end of the first reflector 7 and the second optical element 4, the other end of the first reflector 7 abuts against the platform plane 9 of the three-dimensional display device, and one end of the third bracket 12 close to the second optical element 4 is movably connected with the second reflector 8.

According to the embodiment of the present application, the images of each pair of image light sources 1 are displayed on the same screen or two screens, and each pair of image light sources 1 is disposed opposite to at least one pair of first optical elements 2, 3. In order to realize two-dimensional/three-dimensional switchable playing, different parts of a screen can display the same image in two dimensions.

Each pair of first optical elements may employ 2 condensing lenses, each disposed opposite to an image formation of one image light, each image light being incident into the condensing lens disposed opposite thereto.

According to an embodiment of the present application, the second optical element 4 comprises a fresnel lens. The angle of the second mirror can be adjusted manually or electrically. Based on adjustable parameter's fresnel lens, the cooperation uses arbitrary screen, through 2 speculum, light reflection to lens on, the adjustment light path makes it form the return circuit in a space, and effectual three-dimensional space of utilization for the instrument takes up an area of for the confined device that the observer observed is convenient.

According to the embodiment of the application, the parameters of the at least one pair of image light sources 1, the at least one pair of first optical elements 2,3 and the second reflector 8 can be adjusted according to different viewing indexes.

The viewing index includes a viewing distance and a viewing angle, the parameters of the at least one pair of first optical elements 2,3 include a size, a focal length and a position of a principal axis, the parameters of the second mirror 8 include a size, an angle and a reflectivity, and the parameters of the at least one pair of image light sources 1 include a position, a focal length and a size of a projected image with respect to the at least one pair of first optical elements 2, 3.

Fig. 6 shows a schematic diagram of an optical path of a naked eye three-dimensional display device according to an exemplary embodiment of the present application. Fig. 7 illustrates an optical path schematic diagram of an independent viewing characteristic of a naked eye three-dimensional display device according to an exemplary embodiment of the present application.

As shown in fig. 6, for convenience of explanation, the imaging process of one side of the pair of image light sources 1 will be described first, taking the image on the left side of the screen as an example. The three-dimensional stacked images with different left and right screens are input firstly, for example, the left screen is like A: by adjusting the focal length of the screen, the emitted image light forms a real image a on the first mirror 7 after passing through at least one pair of first optical elements 2, 3. After the image light continues to pass through the second optical element 4, an image, i.e. a, is generated on the second reflector 8, at which time the image light is reflected by the second reflector 8. The image light rays enter the lenses of the human eyes 5, 6 and are converged to generate a real image A. The right side of the screen is the same as this.

Independent imaging of the same screen is achieved by utilizing the difference of the positions of the images projected by the left part and the right part of the same screen respectively, and the convergence directions of the image light rays are different after passing through at least one pair of first optical elements 2 and 3. As shown in fig. 7, the principle is: if the left (or right) screen is approximated as a point source, the image light emitted by the screen will converge at a point (real image point) after passing through the lens, so that the human eyes 5, 6 can only receive a part of the light emitted by the screen from this point source, so that the human eyes 5, 6 can only see one of the two virtual images 11.

In order to illustrate that any screen can be used, the present application uses a mobile phone screen commonly used in the market at present as an example for implementing a pair of image light sources 1, see fig. 3.

The mobile phone screen can be arranged at the screen position of the naked eye three-dimensional display device by adopting any brands of mobile phone screens, the distance between at least one pair of first optical elements 2 and 3 and the mobile phone screen is adjusted by moving the second support 13 based on the characteristics of the mobile phone screen, the second reflecting mirror 8 is adjusted, so that a viewer can conveniently observe, and the second reflecting mirror 8 is a device which is convenient to arrange or integrate into a closed portable mobile phone three-dimensional display.

The utility model provides a naked eye three-dimensional display device's first support 14 conveniently adjusts screen image, for example during the operation, can conveniently adjust the image through the rotation of first support 14 to one side that the viewer was arrived to the screen, treats that the adjustment finishes the back, can turn back and show the operating position.

The first reflector 7 and the second optical element 4 are fixedly arranged through a third bracket 12, and the second reflector 8 is movably connected through a structure of a rotating shaft 10 at one end of the third bracket 12 close to the second optical element 4 and rotates around the axis of the rotating shaft 10. After the first reflector 7 and the second optical element 4 are set to the proper positions according to the viewing indexes of users, the adjustment cannot be performed during viewing, otherwise, the light path is affected. The angle of the mirror can be adjusted according to the position of the eyes 5, 6 of the user to change the reflected light, making the viewer more comfortable and convenient. And the two-dimensional/three-dimensional image switching is convenient, and only the playing content of the image needs to be changed. The visual range is a cone, and images cannot be seen theoretically by other angles, so that the privacy of the display technology is good.

Finally, it should be noted that: although the present disclosure has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the disclosure. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (10)

1. A naked eye three-dimensional display device, comprising:

at least one pair of a first optical element and a second optical element;

the at least one pair of first optical elements receives the image light, the image light is emitted from the at least one pair of first optical elements and then reflected by the first reflecting mirrors, and the reflected image light passes through the second optical elements and the second reflecting mirrors and is incident to human eyes for imaging.

2. The naked eye three-dimensional display device according to claim 1, wherein the image light reflected by the first reflector is incident on the second optical element, and the image light emitted from the second optical element is reflected by the second reflector and is incident on a human eye for imaging.

3. The naked eye three-dimensional display device according to claim 1, wherein the image light reflected by the first reflector is incident on the second reflector, and the image light reflected by the second reflector is incident on a human eye to be imaged through the second optical element.

4. The naked eye three dimensional display device of claim 1, wherein each pair of first optical elements comprises 2 converging lenses.

5. The naked eye three dimensional display device of claim 1, wherein the second optical element comprises a fresnel lens.

6. The naked eye three dimensional display device of claim 1, further comprising:

a first support configured to be adjustable for placement of an image light source;

a second holder configured to be movable for disposing the at least one pair of first optical elements;

and the third support is used for fixing the first reflector and the second optical element, and one end of the third support, which is close to the second optical element, is movably connected with the second reflector.

7. The naked eye three dimensional display device of claim 1, wherein the angle of the second mirror is adjustable manually or electronically.

8. A naked eye three-dimensional display device, comprising:

at least one pair of a first optical element and a second optical element;

the first reflector receives image light, the reflected image light enters the at least one pair of first optical elements, and the image light emitted from the at least one pair of first optical elements enters human eyes for imaging through the second optical element after being reflected by the second reflector.

9. The naked eye three dimensional display device of claim 8, wherein each pair of first optical elements comprises 2 converging lenses; the second optical element includes a fresnel lens.

10. The naked eye three dimensional display device of claim 8, further comprising:

a first support configured to be adjustable for placement of an image light source;

a second holder configured to be movable for disposing the at least one pair of first optical elements;

and the third support is used for fixing the first reflector and the second optical element, and one end of the third support, which is close to the second optical element, is movably connected with the second reflector.

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