Near-eye display device and display method

Abstract

The present application provides a near-eye display device and a display method, the near-eye display device comprising: an optical engine, a lens, an optical waveguide and a controller. The optical engine is used to emit signal light corresponding to a plurality of sub-images determined according to an image to be displayed, at least one of the sub-images being an image obtained after pixel interpolation processing of the image to be displayed; the lens comprises a transparent part, an adjustment component, a first transparent plate and a second transparent plate, the transparent part is located between the first transparent plate and the second transparent plate, the adjustment component is used to adjust the distance between the second transparent plate and the first transparent plate; the optical waveguide is used to propagate signal light; the controller electrically connects the optical engine and the lens; the controller can control the working state of the adjustment component and the signal light of the sub-image emitted by the optical engine, so that the signal light corresponding to different sub-images is incident on different preset areas of the optical waveguide after being refracted by the lens, so as to realize the display of the target image. The present application reduces the difficulty and cost of improving the resolution of displayed images.

Description

Technical Field

[0001] The present application relates to the field of optical technology, and in particular to a near-eye display device and a display method. Background Art

[0002] Near-eye display devices are gradually becoming part of people's daily lives, providing a platform for learning or entertainment. However, the optical path design of related-art near-eye display devices is relatively fixed. The signal light emitted from the optical engine only enters the optical waveguide at the same location. As a result, most solutions to improve the resolution of the image projected by the optical engine are to increase the resolution by improving the optical engine parameters. Therefore, in related-art near-eye display devices, improving the resolution is difficult and costly. Summary of the Invention

[0003] The present application provides a near-eye display device and a display method, aiming to reduce the difficulty of improving the image resolution of the near-eye display device and reduce the cost required to improve the image resolution.

[0004] In a first aspect, the present application provides a near-eye display device, the near-eye display device comprising:

[0005] an optical engine, configured to emit signal light corresponding to an image to be displayed, wherein the image to be displayed can be divided into a plurality of sub-images, each of which is obtained after pixel interpolation processing, and each of which has pixels larger than pixels of an image in a corresponding region of the image to be displayed;

[0006] The lens comprises a first transparent plate and a second transparent plate arranged opposite to each other, wherein the first transparent plate and the second transparent plate are connected via an adjustment component, and the adjustment component is used to adjust the distance between the second transparent plate and the first transparent plate;

[0007] an optical waveguide for transmitting incident signal light to an eye of a user wearing the near-eye display device;

[0008] a controller electrically connected to the optical engine and the adjustment component of the lens;

[0009] Among them, the controller is capable of controlling the adjustment component to be in different working states, and controlling the optical machine to emit signal light corresponding to the sub-image in sequence when the adjustment component is in different working states. The signal light corresponding to each sub-image is refracted by the lens and is incident on the preset area corresponding to the optical waveguide, so as to complete the display splicing of the sub-images in the optical waveguide and display the target image corresponding to the image to be displayed.

[0010] In a second aspect, the present application further provides a display method, the display method comprising:

[0011] Get the image to be displayed;

[0012] Segmenting the image to be displayed, and performing pixel interpolation on the image obtained by the segmentation process to obtain a sub-image of the image to be displayed, wherein the pixels of the sub-image are larger than the pixels of the image of the corresponding area of ​​the sub-image in the image to be displayed;

[0013] According to the working state of the adjustment component in the lens, the sub-images emitted to the lens are controlled so that the signal light corresponding to each sub-image is refracted by the lens and then incident on the preset area corresponding to the optical waveguide in the near-eye display device, so as to complete the display splicing of multiple sub-images and display the target image corresponding to the image to be displayed.

[0014] The present application provides a near-eye display device and a display method. The optical machine of the near-eye display device provided by the present application can emit signal light of multiple sub-images obtained after pixel interpolation processing of the image to be displayed, and control the refraction of the signal light of the sub-image by the lens, so that the signal light corresponding to the sub-image emitted from the optical machine can be incident on the corresponding preset area in the optical waveguide, so as to achieve the splicing of multiple sub-images so as to display the target image corresponding to the image to be displayed, thereby achieving the purpose of improving the display resolution of the image to be displayed, and improving the image display resolution by setting the lens and controlling the signal light emission method of the optical machine, effectively reducing the difficulty and cost of improving the display resolution in the near-eye display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 A schematic structural diagram of a near-eye display device provided in one embodiment of the present application;

[0017] Figure 2a A schematic diagram of a lens provided in an embodiment of the present application;

[0018] Figure 2b A schematic diagram of a lens provided in another embodiment of the present application;

[0019] Figure 2c A schematic diagram of a lens provided in yet another embodiment of the present application;

[0020] Figure 3 A schematic diagram of a signal light incident area provided in one embodiment of the present application;

[0021] Figure 4A schematic diagram of a second transparent plate provided in one embodiment of the present application;

[0022] Figure 5 A schematic structural diagram of a lens provided in one embodiment of the present application;

[0023] Figure 6 A flowchart of the steps of a display method provided in one embodiment of the present application;

[0024] Figure 7 A schematic diagram of a target display image provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, combined, or partially merged, so the actual execution order may vary depending on the actual situation.

[0027] Embodiments of the present application provide a near-eye display device and display method, wherein the near-eye display device can provide users with one of the following technologies: augmented reality (AR), virtual reality (VR), and mixed reality (MR). It should be understood that the near-eye display devices described in this application are all near-eye display devices equipped with optical waveguides, and near-eye display devices without optical waveguides do not belong to the near-eye display devices described in this application.

[0028] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0029] Please refer to Figure 1 , Figure 1 A schematic structural diagram of a near-eye display device 100 provided in one embodiment of the present application.

[0030] like Figure 1As shown, the near-eye display device 100 includes an optical engine 10, a lens 20, an optical waveguide 30, and a controller. The optical engine 10 is used to emit signal light corresponding to a plurality of sub-images determined according to the image to be displayed, wherein the near-eye display device 100 can determine a plurality of sub-images according to the image to be displayed. Specifically, the near-eye display device 100 can perform pixel interpolation processing on the image to be displayed to obtain a plurality of sub-images corresponding to the target image. It should be understood that the sub-image is used to indicate a portion of the target image, that is, the target image is composed of a plurality of sub-images, and the sub-images are obtained by performing pixel interpolation processing on the image to be displayed. Therefore, the target image has more pixels than the image to be displayed, so that the resolution of the target image is higher than that of the image to be displayed. The target image is composed of a plurality of sub-images obtained by performing pixel interpolation processing on the image to be displayed, and the display content of the target image is similar to that of the image to be displayed.

[0031] The lens 20 includes a first transparent plate 21 and a second transparent plate 22 that are arranged opposite to each other. The first transparent plate 21 and the second transparent plate 22 are connected by an adjustment component 23. The adjustment component 23 is used to adjust the distance between the second transparent plate 22 and the first transparent plate 21. The lens 20 also includes a transparent member 24. The transparent member 24 is located between the first transparent plate 21 and the second transparent plate 22. The transparent member 24 can support the first transparent plate 21 or the second transparent plate 22, so that the signal light penetrating the lens 20 is refracted by the first transparent plate 21, the second transparent plate 22 and the transparent member 24. It should be understood that Figure 1 Taking the viewing angle shown as an example, after the adjustment component 23 adjusts the distance between the second transparent plate 22 and the first transparent plate 21, the distance between one end of the second transparent plate 22 and the first transparent plate 21 remains unchanged, and the distance between the other end of the second transparent plate 22 and the first transparent plate 21 increases, so that the second transparent plate 22 and the first transparent plate 21 change from a state of being parallel to each other to a state of having an intersecting angle. In this process, the transparent part 24 can support the first transparent plate 21 or the second transparent plate 22 and refract the penetrating signal light, thereby realizing refraction of the signal light penetrating the lens 20 at different angles; the optical waveguide 30 is used to directionally propagate the signal light emitted from the lens 20 to the eyes of the user wearing the near-eye display device 100, so that the user can see the corresponding image, and the controller is electrically connected to the optical machine 10 and the adjustment component 23 of the lens 20 to control the signal light emitted by the optical machine 10 and the working state of the adjustment component 23.

[0032] See also Figure 2a 、 Figure 2b and Figure 2c , Figure 2a This is a schematic diagram of a lens 20 provided in one embodiment of the present application. Figure 2b This is a schematic diagram of a lens 20 provided in another embodiment of the present application. Figure 2cThis is a schematic diagram of a lens 20 provided in another embodiment of the present application. Figure 2a The lens 20 shown does not refract the signal light passing through it. Figure 2b The lens 20 shown is in working state and refracts the signal light passing through. Figure 2c The lens 20 shown is in another working state to refract the signal light passing through. It should be understood that Figure 2b The refraction angle of the lens 20 to the signal light is Figure 2c The lens 20 shown has different refraction angles for the signal light.

[0033] During the specific implementation process, the controller can control the adjustment component 23 to be in different working states to refract the passing signal light at different angles, and the controller can also control the optical machine 10 to emit the signal light corresponding to the sub-image in sequence when the adjustment component 23 is in different working states, so that the signal light corresponding to each sub-image can be refracted by the lens 20 and then incident on the optical waveguide 30 respectively. It should be understood that different sub-images are incident on different preset areas of the optical waveguide 30, and the sub-images correspond to the preset areas one by one, so that different sub-images can be displayed in different preset areas, and then the splicing of the sub-image display is completed in the optical waveguide 30 to display the target image to the user. It should be noted that the image content of the target image is similar to the image content of the image to be displayed, but because there are more pixels in the target image, the resolution of the target image is higher than the resolution of the image to be displayed, thereby achieving the purpose of improving the resolution of the image display in the near-eye display device 100.

[0034] During the specific implementation process, the transparent member 24 can provide support to the second transparent plate 22 when the distance between the second transparent plate 22 and the first transparent plate 21 changes, thereby reducing the risk of breakage of the second transparent plate 22 and increasing the service life of the lens 20; and the transparent member 24 is tightly connected to the two transparent plates, and deforms when the angle between the two transparent plates changes, forming a transparent prism with a wedge angle as a whole, thereby deflecting the light.

[0035] In some embodiments, the transparent member 24 comprises a deformable elastomer or a liquid.

[0036] In a specific implementation, the transparent member 24 includes a deformable elastic body, so that when the distance between the first transparent plate 21 and the second transparent plate 22 changes (i.e., the angle between the two transparent plates changes), the deformable elastic body can deform accordingly, thereby providing support for the second transparent plate 22 and forming a prism with the two transparent plates to deflect light. In other embodiments, a liquid is filled between the first transparent plate 21 and the second transparent plate 22 to provide support for the second transparent plate 22 and form a prism with the two transparent plates to deflect light when the distance between the first transparent plate 21 and the second transparent plate 22 changes. It should be understood that the liquid selected is a light-transmitting liquid to prevent the liquid from absorbing light and causing a decrease in the imaging quality of the near-eye display device 100.

[0037] See also Figure 3 , Figure 3 A schematic diagram of a signal light incident area provided in one embodiment of the present application.

[0038] Specifically, Figure 3 It is used to indicate the incident area corresponding to all signal lights. The area of ​​the coupling-in region of the optical waveguide 30 is greater than or equal to the area of ​​the incident area corresponding to all signal lights.

[0039] In a specific implementation, four sub-images are determined based on the image to be displayed, wherein the pixel values ​​of one sub-image are the same as those of the image to be displayed, and the remaining sub-images are obtained by pixel interpolation processing of the image to be displayed; it should be understood that the first area is a preset area corresponding to one sub-image, and the second area is a preset area corresponding to another sub-image, so that different sub-images are incident on different preset areas. Specifically, Figure 3 For example, the four sub-images are sub-image a, sub-image b, sub-image c and sub-image d, and the signal light corresponding to sub-image a is incident on Figure 3 For all first regions shown, the signal light corresponding to the sub-image b is incident on Figure 3 For all the second regions shown, the signal light corresponding to the sub-image c is incident on Figure 3 For all third regions shown, the signal light corresponding to the sub-image d is incident on Figure 3 All the fourth areas shown are used to achieve image splicing display.

[0040] Specifically, the controller controls the optical engine 10 to emit the signal light corresponding to each sub-image one by one. During this process, the controller controls the adjustment component 23 to refract the signal light corresponding to the sub-image, thereby causing the signal light of the sub-image to be incident on the corresponding area in the coupling zone of the optical waveguide 30. For example, the controller controls the optical engine 10 to emit the signal light corresponding to sub-image a. The controller controls the adjustment component 23 to deflect the signal light corresponding to sub-image a and cause it to be incident on the first area. It should be understood that after the signal light of sub-image a is refracted, the controller controls the adjustment component 23 to adjust the distance between the first transparent plate 21 and the second transparent plate 22, thereby changing the refraction direction of the signal light by the lens 20. The signal light of the other sub-images is then refracted one by one, causing the signal light of the corresponding sub-image b to be incident on the second area, the signal light of sub-image c to be incident on the third area, and the signal light of sub-image d to be incident on the fourth area. As a result, the signal light of the corresponding sub-images is incident on the first to fourth areas, thereby achieving image display splicing. It should be understood that the lens 20 quickly sweeps so that the signal light corresponding to the sub-image is incident into the optical waveguide 30 in a short time, thereby realizing image display splicing so that the user can see the complete target image composed of multiple sub-images.

[0041] In some embodiments, the lens 20 is disposed on the light output component of the optical engine 10 .

[0042] Exemplarily, the optical engine 10 includes at least a light source and a light output assembly. The light source is used to generate signal light, and the light output assembly is used to emit the signal light. The lens 20 can be disposed on the light output assembly of the optical engine 10, such as a lens, so that the signal light passes through the lens 20 and is incident on the optical waveguide 30. Specifically, the first transparent plate 21 of the lens 20 is connected to the light output assembly, and the adjustment assembly 23 of the lens 20 refracts the signal light by adjusting the distance between the second transparent plate 22 and the first transparent plate 21.

[0043] In other embodiments, the lens 20 is disposed on the surface of the optical waveguide 30 facing the optical engine 10 .

[0044] Exemplarily, the lens 20 may also be disposed on the surface of the optical waveguide 30 , so that the signal light emitted from the optical engine 10 passes through the lens 20 and then enters the optical waveguide 30 .

[0045] In other embodiments, the near-eye display device 100 is a pair of glasses, and the optical engine 10 and the lens 20 are disposed on the temples of the glasses.

[0046] Exemplarily, when the near-eye display device 100 is a pair of glasses, for example, when the near-eye display device 100 is an AR pair of glasses, the optical engine 10 and the lens 20 are arranged on the temples of the AR pair of glasses, so that the signal light emitted by the optical engine 10 passes through the lens 20 and is incident on the optical waveguide 30.

[0047] In some embodiments, the first transparent plate 21 of the lens 20 is fixedly disposed on the near-eye display device 100 , and the second transparent plate 22 is a movable transparent plate.

[0048] In the specific implementation process, one transparent plate can be deflected relative to another transparent plate to achieve refraction of light, so that the first transparent plate 21 can be fixedly set on the light output component of the optical machine 10, or fixedly set on the surface of the optical waveguide 30, or fixedly set on the temples of the AR glasses, and the second transparent plate 22 is deflected relative to the first transparent plate 21 under the control of the adjustment component 23, so that refraction of the signal light can be achieved.

[0049] In some embodiments, the first transparent plate 21 includes glass or resin, and the second transparent plate 22 includes glass or resin.

[0050] In the specific implementation process, the first transparent plate 21 and the second transparent plate 22 can be made of glass or resin. It should be understood that if the transparent plate is made of glass, the refractive index of the lens 20 is better, and the lens 20 can be made thinner to save the space occupied by the lens 20; if the transparent plate is made of resin, the near-eye display device 100 has better resistance to mechanical impact, and can also reduce the weight of the lens 20, thereby making the near-eye display device 100 lighter.

[0051] It should be noted that those skilled in the art can select the material for preparing the lens 20 according to actual needs, including but not limited to the first transparent plate 21 being resin and the second transparent plate 22 being glass; or the first transparent plate 21 and the second transparent plate 22 being made of the same material, etc. This application does not limit the specific preparation materials and combination methods of the lens 20 plates.

[0052] In some embodiments, the adjustment assembly 23 includes a plurality of adjustment members. The edge area of ​​the surface of the second transparent plate 22 facing the first transparent plate 21 is connected to the first transparent plate 21 through the adjustment members. The edge area is the boundary area of ​​the second transparent plate 22 .

[0053] See also Figure 4 , Figure 4 This is a schematic diagram of the second transparent plate 22 provided in one embodiment of the present application.

[0054] like Figure 4 As shown, the area between the boundary and the dotted line is the edge area, and the adjustment member can be set at any position of the edge area to adjust the relative distance between the first transparent plate 21 and the second transparent plate 22, thereby realizing refraction of the signal light.

[0055] In a specific embodiment, the ratio of the area of ​​an edge region to the area of ​​the first transparent plate 21 is less than or equal to 0.25. It should be understood that those skilled in the art can set the size of the edge region according to actual needs, and this application does not limit the size of the edge region.

[0056] See also Figure 5 , Figure 5 This is a schematic structural diagram of a lens 20 provided in one embodiment of the present application.

[0057] In some embodiments, the number of the adjusting members is greater than or equal to the number of the corner points in the second transparent plate 22 , and each corner point in the second transparent plate 22 is connected to the first transparent plate 21 via an adjusting member.

[0058] like Figure 5 As shown, when the second transparent plate 22 is rectangular, the corner points of the second transparent plate 22 are used to indicate the corresponding corners of the rectangle. For example, when the second transparent plate 22 is square, the corner points indicate the positions corresponding to the four right angles of the square. Each right angle is connected to the first transparent plate 21 via an adjustment member, so that the adjustment member can adjust the relative distance between the second transparent plate 22 and the first transparent plate 21. Providing adjustment members at the corner points not only meets the need for flexible adjustment of the relative distance between the second transparent plate 22 and the first transparent plate 21, but also reduces the manufacturing cost of the adjustment members, thereby reducing the cost of the near-eye display device.

[0059] In some embodiments, the adjustment component 23 includes a piezoelectric material, wherein the adjustment component 23 generates corresponding mechanical deformation according to the applied voltage to adjust the distance between the second transparent plate 22 and the first transparent plate 21 .

[0060] Exemplarily, the adjustment component 23 is made of piezoelectric material. It should be understood that the piezoelectric material can generate corresponding mechanical deformation when receiving an applied voltage to push the second transparent plate 22, thereby adjusting the relative distance between the first transparent plate 21 and the second transparent plate 22.

[0061] In a specific implementation, the controller can apply an operating voltage to the adjustment assembly 23, causing the adjustment assembly 23 to generate corresponding mechanical deformation to adjust the relative distance between the first transparent plate 21 and the second transparent plate 22. If the adjustment assembly 23 includes multiple adjustment members, each of which is made of piezoelectric material, the controller can apply a corresponding operating voltage to each adjustment member, allowing the lens 20 to refract the transmitted signal light at multiple angles.

[0062] The near-eye display device 100 provided by the above embodiment can determine multiple sub-images based on the image to be displayed, and enable the optical machine to emit signal light corresponding to each sub-image one by one, and control the lens 20 to refract the signal light of the sub-image, so that the signal lights of the multiple sub-images emitted from the optical machine 10 can be respectively incident on the corresponding preset areas in the optical waveguide 30, so as to achieve the purpose of image display splicing of the multiple sub-images, so that the user can view the target image corresponding to the image to be displayed, thereby achieving the purpose of improving the display resolution of the image, and effectively reducing the difficulty and cost of improving the display resolution in the near-eye display device 100.

[0063] See also Figure 6 , Figure 6 A flowchart of the steps of a display method provided in one embodiment of the present application.

[0064] like Figure 6 As shown, the display method is applied to the near-eye display device 100 provided in the above embodiments, and the display method includes S101 to S103.

[0065] S101: Acquire an image to be displayed.

[0066] For example, the corresponding image to be displayed may be acquired according to the actual display requirements of the user, wherein the image to be displayed includes but is not limited to photos and display interfaces.

[0067] S102: Perform pixel interpolation processing on the image to be displayed to obtain a plurality of sub-images of the target image corresponding to the image to be displayed.

[0068] Exemplarily, after determining the image to be displayed, pixel interpolation processing is performed on the image to be displayed to obtain multiple images. It should be understood that the multiple images obtained are all sub-images of the target image to be displayed. Specifically, by obtaining the pixel values ​​of adjacent pixels and using the average of these two pixels as the pixel value of the interpolated pixel, the image after pixel interpolation is made closer to the image to be displayed. However, because the target image to be displayed is composed of multiple sub-images obtained through pixel interpolation, the target image has more pixels than the image to be displayed, thereby improving the resolution of the target image to be displayed.

[0069] S103. According to the working state of the adjustment component 23 in the lens 20, the sub-images emitted to the lens 20 are controlled so that the signal light corresponding to each sub-image is refracted by the lens 20 and is respectively incident on the preset area of ​​the optical waveguide 30 in the near-eye display device 100, so as to complete the display splicing of the multiple sub-images and display the target image corresponding to the image to be displayed.

[0070] Exemplarily, the near-eye display device controls the working state of the adjustment component 23 in the lens 20 so that the lens 20 can refract the signal light passing through, and controls the sub-images emitted to the lens 20 so that the signal light corresponding to each sub-image can be incident on the corresponding area in the optical waveguide 30 after being refracted by the lens 20, so that the signal light corresponding to different sub-images is projected onto different areas in the optical waveguide 30, thereby completing the display splicing of multiple sub-images, so that the user wearing the near-eye display device 100 can see the corresponding target image at the corresponding position of the optical waveguide 30.

[0071] It should be understood that the different projection areas corresponding to the signal lights corresponding to different sub-images are all located within the coupling-in area of ​​the optical waveguide 30 , so that the signal lights corresponding to all sub-images can be directionally transmitted to the user's eyes through the optical waveguide 30 .

[0072] In a specific implementation, the number of sub-images is positively correlated with the number of angles at which the lens refracts the signal light. For example, if four sub-images are to be generated based on the image to be displayed, the lens 20 needs to refract the signal light corresponding to the four sub-images into four regions on the optical waveguide 30, respectively. In this process, the lens 20 provides four refraction angles so that the sub-images can be reassembled into a single image. If the image to be displayed can generate nine sub-images, the lens 20 can refract the signal light corresponding to the nine sub-images into the corresponding nine regions on the optical waveguide 30, respectively, to achieve image splicing. It should be understood that the greater the number of sub-images determined based on the image to be displayed, the higher the resolution of the target image ultimately displayed.

[0073] See also Figure 7 , Figure 7 A schematic diagram of a target display image provided in an embodiment of the present application.

[0074] like Figure 7As shown, the pixel values ​​corresponding to the image to be displayed are all represented by 0, and the image is used as the first sub-image. The pixel interpolation processing is performed on the image to be displayed to obtain the second sub-image, the third sub-image and the fourth sub-image, wherein the pixel values ​​of the second sub-image are all represented by 1, the pixel values ​​of the third sub-image are represented by 2, and the pixel values ​​of the fourth sub-image are represented by 3; in the specific implementation process, when the optical machine emits the first sub-image, the control lens 20 deflects the signal light corresponding to the first sub-image toward the upper left corner, so that the signal light of the first sub-image is incident on the corresponding area, when the optical machine emits the second sub-image, the control lens 20 deflects the signal light corresponding to the second sub-image toward the upper right corner, and when the optical machine emits the third sub-image and the fourth sub-image, the control lens 20 deflects the signal light corresponding to the third sub-image toward the lower right corner, and the control lens 20 deflects the signal light corresponding to the fourth sub-image toward the lower left corner, so that each sub-image is projected into the area corresponding to the optical waveguide in turn, to complete the display splicing of the sub-images, and then the target image can be displayed. It can be understood that the number of pixels of the target image finally displayed is greater than the number of pixels of the image to be displayed, thereby improving the resolution of the displayed image.

[0075] It should be noted that the above Figure 7 The sub-image generation process is taken as an example. In the specific implementation process, more sub-images can be determined according to the image to be displayed, and the determined sub-images can be displayed in corresponding areas respectively to achieve image splicing display. This application does not limit the number of sub-images.

[0076] In some embodiments, the adjustment component includes multiple adjustment parts, and each corner point of the second transparent plate is connected to the first transparent plate through a corresponding adjustment part; the method also includes: determining the voltage applied to each of the adjustment parts and / or the duration of the voltage application to control the working state of the adjustment component.

[0077] Exemplarily, the adjusting member can generate corresponding mechanical deformation according to the applied voltage, specifically, generate mechanical deformation of extension or shortening according to the magnitude of the applied voltage, so as to adjust the distance between the second transparent plate and the first transparent plate, thereby controlling the refraction angle of the lens for the signal light corresponding to each sub-image.

[0078] For example, the second transparent plate is a rectangle, and each corner point in the rectangle is connected to the first transparent plate through a corresponding adjustment member. By determining the magnitude and duration of the voltage applied to each adjustment member, the deflection angle of the second transparent plate relative to the first transparent plate is controlled, thereby achieving control of the refraction angle of the signal light passing through the lens.

[0079] In some embodiments, determining the magnitude of the voltage applied to each of the adjusting components and / or the duration of the voltage application includes: when the adjusting component is in different working states, the magnitude of the voltage applied to at least one of the adjusting components is different.

[0080] For example, when the adjustment component is in different working states, the lens can refract the signal light passing through it at different angles, so that the signal light penetrating the lens is projected into different areas of the optical waveguide; in the specific implementation process, by applying voltages of different magnitudes to the adjustment member, the degree of extension or shortening of the adjustment member is controlled, thereby adjusting the refraction angle of the signal light.

[0081] Specifically, the refraction phenomenon achieved by the lens is described by taking an example in which the second transparent plate in the lens is square and the signal light is incident from the first transparent plate and emitted from the second transparent plate.

[0082] In the incident direction of the signal light, the upper right corner, the lower right corner, the lower left corner and the upper left corner of the second transparent plate are all connected to the first transparent plate through the adjusting member.

[0083] If a positive voltage is applied to the adjusting members at the upper right and lower right corners, and a reverse voltage or no voltage is applied to the adjusting members at the upper left and lower left corners, the distance between the right side of the second transparent plate and the first transparent plate will be larger than the distance between the left side of the second transparent plate and the first transparent plate, causing the signal light passing through to be deflected to the right.

[0084] By applying voltage in the opposite manner, the distance between the right side of the second transparent plate and the first transparent plate is smaller than the distance between the left side of the second transparent plate and the first transparent plate, so that the signal light passing through the lens is deflected to the left.

[0085] In the above two working states, the lens can realize the splicing display of the left and right sub-images.

[0086] Furthermore, by applying a reverse voltage to the adjusting member at the lower right corner and a forward voltage to the adjusting member at the upper left corner, the signal light passing through the lens can be deflected toward the upper left corner, so that the signal light can be projected to the Figure 3 In the first area shown.

[0087] Applying a reverse voltage to the adjustment member at the lower left corner and a forward voltage to the adjustment member at the upper right corner can deflect the signal light passing through the lens toward the upper right corner. Specifically, the signal light can be projected to Figure 3 In the second area shown.

[0088] Applying a reverse voltage to the adjustment member at the upper left corner and a forward voltage to the adjustment member at the lower right corner can deflect the signal light passing through the lens toward the lower right corner, so that the signal light can be projected to Figure 3 In the third area shown.

[0089] Applying a reverse voltage to the adjusting element at the upper right corner and a forward voltage to the adjusting element at the lower left corner can deflect the signal light passing through the lens toward the lower left corner, so that the signal light can be projected to Figure 3 In the fourth area shown.

[0090] By controlling the lens to refract the signal light passing through in sequence in the manner provided above, it should be understood that when the lens refracts the signal light at different angles, the output signal light is also different, so that the signal light corresponding to different sub-images can be displayed and spliced ​​in the optical waveguide, thereby displaying the target image.

[0091] The display method provided by the above embodiment controls the signal light emitted by the optical machine and the refraction angle of the lens on the signal light passing through, so that the signal light of different sub-images emitted by the optical machine can be projected into different areas of the optical waveguide through the lens to realize image display splicing. Moreover, since the sub-images are obtained by pixel interpolation processing of the image to be displayed, the resolution of the target image obtained by splicing and displaying is higher than the resolution of the image to be displayed, thereby achieving an improvement in the image display resolution and reducing the difficulty and cost of improving the image display resolution.

[0092] It should be understood that the terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0093] It should also be understood that the term "and / or" used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations. It should be noted that, in this article, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "including a..." does not exclude the presence of other identical elements in the process, method, article or system that includes the element.

[0094] The serial numbers of the embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments. The above description is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A near-eye display device, characterized in that: The near-eye display device comprises: an optical engine, configured to emit signal light corresponding to a plurality of sub-images determined according to an image to be displayed, at least one of the sub-images being an image obtained by pixel interpolation processing of the image to be displayed; The lens comprises a transparent member and a first transparent plate and a second transparent plate disposed opposite to each other, wherein the transparent member is located between the first transparent plate and the second transparent plate, and the first transparent plate and the second transparent plate are connected by an adjustment component, and the adjustment component is used to adjust the distance between the second transparent plate and the first transparent plate; an optical waveguide for transmitting incident signal light to an eye of a user wearing the near-eye display device; a controller electrically connected to the optical engine and the adjustment component of the lens; Among them, the controller is capable of controlling the adjustment component to be in different working states, and controlling the optical machine to emit signal light corresponding to the sub-image in sequence when the adjustment component is in different working states. The signal light corresponding to each sub-image is refracted by the lens and is incident on the preset area corresponding to the optical waveguide, so as to complete the display splicing of the sub-images in the optical waveguide and display the target image corresponding to the image to be displayed.

2. The near-eye display device according to claim 1, wherein The adjustment assembly includes a plurality of adjustment members, and an edge area of ​​the surface of the second transparent plate facing the first transparent plate is connected to the first transparent plate through the adjustment members. The edge area is an area close to the boundary of the second transparent plate.

3. The near-eye display device according to claim 2, wherein: The number of the adjusting members is greater than or equal to the number of corner points in the second transparent plate, and each corner point in the second transparent plate is connected to the first transparent plate through the adjusting member.

4. The near-eye display device according to any one of claims 1 to 3, wherein: The adjustment component includes a piezoelectric material; The adjusting component generates corresponding mechanical deformation according to the applied voltage to adjust the distance between the second transparent plate and the first transparent plate.

5. The near-eye display device according to any one of claims 1 to 3, wherein: The transparent member includes a deformable elastic body or liquid.

6. The near-eye display device according to any one of claims 1 to 3, wherein: The lens is provided on the light emitting component of the optical machine; or The lens is provided on the surface of the optical waveguide facing the optical engine; or The near-eye display device is a pair of glasses, and the optical engine and the lens are arranged on the temples of the glasses.

7. The near-eye display device according to any one of claims 1 to 3, wherein: The first transparent plate of the lens is fixedly arranged on the near-eye display device, and the second transparent plate is a movable transparent plate.

8. The near-eye display device according to any one of claims 1 to 3, wherein: The first transparent plate includes glass or resin, and the second transparent plate includes glass or resin.

9. A display method, characterized in that: Applied to the near-eye display device according to any one of claims 1 to 8, the display method comprises: Get the image to be displayed; Performing pixel interpolation processing on the image to be displayed to obtain a plurality of sub-images of the target image corresponding to the image to be displayed; According to the working state of the adjustment component in the lens, the sub-images emitted to the lens are controlled so that the signal light corresponding to each sub-image is refracted by the lens and then incident on the preset area corresponding to the optical waveguide in the near-eye display device, so as to complete the display splicing of multiple sub-images and display the target image corresponding to the image to be displayed.

10. The display method according to claim 9, wherein: The adjustment assembly includes a plurality of adjustment members, and each corner point of the second transparent plate is connected to the first transparent plate through a corresponding adjustment member; the method further includes: The magnitude of the voltage applied to each of the regulating components and / or the duration of the voltage application are determined to control the working state of the regulating component.

11. The display method according to claim 10, wherein: The method further comprises: When the regulating assembly is in different working states, the voltage applied to at least one regulating member has different magnitudes.

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