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 comprises: an optical engine, a lens, an optical waveguide, and a controller. The optical engine is used for emitting signal light corresponding to a plurality of sub-images determined on the basis of an image to be displayed, wherein at least one of the sub-images is an image obtained after performing pixel interpolation processing on the image to be displayed. The lens comprises a transparent member, an adjustment assembly, a first transparent plate, and a second transparent plate, wherein the transparent member is located between the first transparent plate and the second transparent plate, and the adjustment assembly is used for adjusting the distance between the second transparent plate and the first transparent plate. The optical waveguide is used for propagating the signal light. The controller is electrically connected to the optical engine and the lens. The controller can control the working state of the adjustment assembly and the signal light of the sub-images emitted by the optical engine, so that the signal light corresponding to different sub-images is incident respectively onto different preset regions of the optical waveguide after being refracted by the lens, so as to achieve display of a target image. The present application reduces the difficulty and required costs for enhancing the image display resolution.

Description

Near-eye display device and display method

[0001] The present application claims priority to the Chinese patent application No. 2024112882181, filed on September 13, 2024, and entitled "Near-eye display device and display method", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of optical technology, and in particular, to a near-eye display device and a display method. BACKGROUND

[0003] Near-eye display devices are gradually entering people's daily life for users to learn or entertain. However, the light path design of the near-eye display device in the related art is relatively fixed, and the signal light emitted from the light machine is incident at only one position of the optical waveguide, thereby resulting in that in a scheme of greatly improving the resolution of the image projected by the light machine, the resolution is improved by improving the parameters of the light machine. It can be seen that in the related art, it is difficult to improve the resolution of the near-eye display device and the cost required for improving the resolution is high. SUMMARY

[0004] 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 for improving the image resolution.

[0005] In a first aspect, the present application provides a near-eye display device, comprising:

[0006] a light machine configured to emit signal light corresponding to a to-be-displayed image, the to-be-displayed image being capable of being divided into a plurality of sub-images, the sub-images being images obtained after pixel interpolation processing, and the pixels of the sub-images being greater than the pixels of the corresponding region images of the to-be-displayed image in the sub-images;

[0007] a lens comprising a first transparent plate and a second transparent plate arranged oppositely, the first transparent plate and the second transparent plate being connected by an adjusting assembly, the adjusting assembly being configured to adjust the distance between the second transparent plate and the first transparent plate;

[0008] an optical waveguide configured to propagate the incident signal light to the eyes of a user wearing the near-eye display device;

[0009] a controller electrically connected to the light machine and the adjusting assembly of the lens;

[0010] The controller can control the adjusting assembly to be in different working states, and control the light machine to sequentially emit the signal light corresponding to the sub-images when the adjusting assembly is in different working states, and the signal light corresponding to each of the sub-images is refracted by the lens and then incident to the preset region of the optical waveguide corresponding to the sub-image, so as to complete the display splicing of the sub-images in the optical waveguide and display the target image corresponding to the to-be-displayed image 。

[0011] In a second aspect, the present application also provides a display method, which comprises:

[0012] Obtaining a to-be-displayed image;

[0013] Segmenting the to-be-displayed image, and performing pixel interpolation processing on the segmented image to obtain a sub-image of the to-be-displayed image, wherein the pixel of the sub-image is greater than the pixel of the corresponding region image of the to-be-displayed image in the sub-image;

[0014] According to the working state of the adjusting assembly in the lens, the sub-image emitted to the lens is controlled, so that the signal light corresponding to each of the sub-images is refracted by the lens and then incident to the preset region of the optical waveguide corresponding to the sub-image in the near-eye display device, so as to complete the display splicing of a plurality of sub-images and display the target image corresponding to the to-be-displayed image.

[0015] The present application provides a near-eye display device and a display method. The light machine of the near-eye display device provided by the present application can emit the signal light of a plurality of sub-images obtained by performing pixel interpolation processing on a to-be-displayed image, 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 by the light machine can be incident to the corresponding preset region in the optical waveguide, so as to realize the splicing of a plurality of sub-images and display the target image corresponding to the to-be-displayed image, thereby achieving the purpose of improving the display resolution of the to-be-displayed image. The display resolution is improved by setting the lens and controlling the signal light emission mode of the light machine, which effectively reduces the difficulty and cost of improving the display resolution in the near-eye display device. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0017] FIG. 1 is a structural schematic diagram of a near-eye display device according to an embodiment of the present application;

[0018] FIG. 2a is a schematic diagram of a lens according to an embodiment of the present application;

[0019] FIG. 2b is a schematic diagram of a lens according to another embodiment of the present application;

[0020] FIG. 2c is a schematic diagram of a lens according to yet another embodiment of the present application;

[0021] FIG. 3 is a schematic diagram of a signal light incident region according to an embodiment of the present application;

[0022] FIG. 4 is a schematic diagram of a second transparent plate according to an embodiment of the present application;

[0023] FIG. 5 is a schematic diagram of a lens according to an embodiment of the present application;

[0024] FIG. 6 is a flowchart of a display method according to an embodiment of the present application;

[0025] FIG. 7 is a schematic diagram of a target display image according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0027] The flowcharts shown in the drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor do they have to be executed in the order described. For example, some operations / steps can be further divided, combined or partially combined, so the actual execution order can be changed according to the actual situation.

[0028] The near-eye display device and display method provided by the embodiments of the present application can provide the following technologies for a user: Augmented Reality (AR) technology, Virtual Reality (VR) technology and Mixed Reality (MR) technology. It should be understood that the near-eye display device described in the present application is a near-eye display device equipped with an optical waveguide, and a near-eye display device not equipped with an optical waveguide does not belong to the near-eye display device described in the present application.

[0029] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] Please refer to FIG. 1, which is a structural schematic diagram of a near-eye display device 100 provided by an embodiment of the present application.

[0031] As shown in FIG. 1, 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 configured to emit signal light corresponding to a plurality of sub-images determined according to a to-be-displayed image. Specifically, the near-eye display device 100 can determine the plurality of sub-images according to the to-be-displayed image. In detail, the near-eye display device 100 can perform pixel interpolation processing on the to-be-displayed image to obtain a plurality of sub-images corresponding to a target image. It should be understood that a sub-image is used to indicate a part 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 to-be-displayed image. Therefore, the target image has more pixels than the to-be-displayed image, and has a higher resolution than the to-be-displayed image. In addition, the target image is composed of a plurality of sub-images obtained by performing pixel interpolation processing on the to-be-displayed image, and the display content of the target image is similar to that of the to-be-displayed image.

[0032] The lens 20 includes a first transparent plate 21 and a second transparent plate 22 arranged oppositely, and the first transparent plate 21 and the second transparent plate 22 are connected by an adjusting assembly 23. The adjusting assembly 23 is configured to adjust the distance between the second transparent plate 22 and the first transparent plate 21. The lens 20 further includes a transparent piece 24 located between the first transparent plate 21 and the second transparent plate 22. The transparent piece 24 can support the first transparent plate 21 or the second transparent plate 22, so that the signal light passing through the lens 20 is refracted by the first transparent plate 21, the second transparent plate 22, and the transparent piece 24. It should be understood that the above description is based on the view angle shown in FIG. 1. After the adjusting assembly 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. As a result, the second transparent plate 22 and the first transparent plate 21 change from a parallel state to a state with an intersection angle. The transparent piece 24 can support the first transparent plate 21 or the second transparent plate 22 in this process, and refract the passing signal light, so as to refract the signal light passing through the lens 20 at different angles. The optical waveguide 30 is configured to direct the signal light emitted from the lens 20 to the eyes of a user wearing the near-eye display device 100, so that the user can see the corresponding image. The controller is electrically connected with the optical engine 10 and the adjusting assembly 23 of the lens 20, so as to control the signal light emitted by the optical engine 10 and the working state of the adjusting assembly 23.

[0033] Please refer to FIG. 2a, FIG. 2b and FIG. 2c, FIG. 2a is a schematic diagram of the lens 20 provided by an embodiment of the present application, FIG. 2b is a schematic diagram of the lens 20 provided by another embodiment of the present application, and FIG. 2c is a schematic diagram of the lens 20 provided by yet another embodiment of the present application. The lens 20 shown in FIG. 2a does not refract the signal light passing through it, the lens 20 shown in FIG. 2b is in a working state and refracts the signal light passing through it, and the lens 20 shown in FIG. 2c is in another working state to refract the signal light passing through it. It should be understood that the refractive angle of the lens 20 shown in FIG. 2b to the signal light is different from the refractive angle of the lens 20 shown in FIG. 2c to the signal light.

[0034] In the specific implementation process, the controller can control the adjusting assembly 23 to be in different working states to refract the signal light passing through it at different angles, and the controller can also control the light engine 10 to sequentially emit the signal light corresponding to the sub-image when the adjusting assembly 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 respectively incident on the optical waveguide 30. It should be understood that different sub-images are incident on different preset regions of the optical waveguide 30, and the sub-image and the preset region are one-to-one corresponding, so that different sub-images can be displayed in different preset regions, and the splicing of the sub-image display in the optical waveguide 30 is completed, so as to display the target image to the user. It should be noted that the image content of the target image is similar to that of the image to be displayed, but the resolution of the target image is higher than that of the image to be displayed because the target image has more pixel points, so as to improve the resolution of the image display in the near-eye display device 100.

[0035] In the specific implementation process, the transparent piece 24 can provide support for 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 piece 24 is tightly connected with the two transparent plates and deforms when the included angle between the two transparent plates changes, and as a whole forms a transparent triangular prism with a wedge angle, thereby deflecting the light.

[0036] In some embodiments, the transparent piece 24 includes a variable elastomer or a liquid.

[0037] In a specific implementation, the transparent member 24 includes a variable elastomer, such that when the distance between the first transparent plate 21 and the second transparent plate 22 changes (i.e., the included angle between the two transparent plates changes), the variable elastomer deforms accordingly to provide support for the second transparent plate 22 and form a prism with the two transparent plates to deflect light. In another implementation, 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 liquid that can transmit light to avoid the liquid absorbing light and causing the imaging quality of the near-eye display device 100 to decrease.

[0038] Referring to FIG. 3, FIG. 3 is a schematic diagram of a signal light incident region according to an embodiment of the present application.

[0039] Specifically, FIG. 3 is used to indicate all signal light corresponding incident regions, and the area of the coupling-in region of the optical waveguide 30 is greater than or equal to the area of all signal light corresponding incident regions.

[0040] In a specific implementation, four sub-images are determined according to the image to be displayed, wherein the pixel values of one sub-image are the same as the pixel values of the image to be displayed, and the remaining sub-images are obtained by performing pixel interpolation processing on the image to be displayed; it should be understood that the first region is a preset region corresponding to one sub-image, and the second region is a preset region corresponding to another sub-image, such that different sub-images are incident into different preset regions. Specifically, taking FIG. 3 as an example, the four sub-images are sub-image a, sub-image b, sub-image c, and sub-image d, the signal light corresponding to the sub-image a is incident into all first regions shown in FIG. 3, the signal light corresponding to the sub-image b is incident into all second regions shown in FIG. 3, the signal light corresponding to the sub-image c is incident into all third regions shown in FIG. 3, and the signal light corresponding to the sub-image d is incident into all fourth regions shown in FIG. 3, to realize splicing display of the image.

[0041] Specifically, the controller controls the light machine 10 to emit the signal light corresponding to each sub-image one by one. In this process, the controller controls the adjusting assembly 23 to refract the signal light corresponding to the sub-image, so that the signal light of the sub-image is incident into the corresponding region in the coupling-in area of the optical waveguide 30. For example, the controller controls the light machine 10 to emit the signal light corresponding to the sub-image a, and the controller controls the adjusting assembly 23 to deflect the signal light corresponding to the sub-image a and make it incident into the first region. It should be understood that after the refraction of the signal light of the sub-image a is completed, the controller controls the adjusting assembly 23 to adjust the distance between the first transparent plate 21 and the second transparent plate 22, so as to change the refraction direction of the signal light by the lens 20, and then refract the signal light of other sub-images one by one, so that the signal light of the corresponding sub-image b is incident into the second region, the signal light of the sub-image c is incident into the third region, and the signal light of the sub-image d is incident into the fourth region, so that the signal light of the corresponding sub-image is incident into the first region to the fourth region, and the display splicing of the image is realized. It should be understood that the lens 20 is quickly swept to make the signal light of the corresponding sub-image incident into the optical waveguide 30 in a short time, so as to realize the display splicing of the image, so that the user can see the complete target image composed of multiple sub-images.

[0042] In some embodiments, the lens 20 is arranged on the light-emitting assembly of the light machine 10.

[0043] For example, the light machine 10 at least includes a light source for generating signal light and a light-emitting assembly for emitting the signal light. The lens 20 can be arranged on the light-emitting assembly such as a lens of the light machine 10, so that the signal light is incident into the optical waveguide 30 after penetrating the lens 20. Specifically, the first transparent plate 21 of the lens 20 is connected with the light-emitting assembly, and the adjusting assembly 23 of the lens 20 adjusts the distance between the second transparent plate 22 and the first transparent plate 21 to refract the signal light.

[0044] In other embodiments, the lens 20 is arranged on the surface of the optical waveguide 30 facing the light machine 10.

[0045] For example, the lens 20 can also be arranged on the surface of the optical waveguide 30, so that the signal light emitted from the light machine 10 is incident into the optical waveguide 30 after penetrating the lens 20.

[0046] In other embodiments, the near-eye display device 100 is a pair of glasses, and the light machine 10 and the lens 20 are arranged on the temples of the glasses.

[0047] For example, when the near-eye display device 100 is a pair of glasses, for example, the near-eye display device 100 is a pair of AR glasses, the light machine 10 and the lens 20 are arranged on the temples of the AR glasses, so that the signal light emitted from the light machine 10 is incident into the optical waveguide 30 after penetrating the lens 20.

[0048] In some embodiments, the first transparent plate 21 of the lens 20 is fixedly arranged on the near-eye display device 100, and the second transparent plate 22 is a movable transparent plate.

[0049] In a specific implementation process, the refraction of light can be achieved by deflection of one transparent plate relative to another transparent plate, so that the first transparent plate 21 can be fixedly arranged on an out-light assembly of the light engine 10, or fixedly arranged on a surface of the light waveguide 30, or fixedly arranged on a temple of the AR glasses, and the second transparent plate 22 is deflected relative to the first transparent plate 21 under the control of the adjusting assembly 23, so as to achieve the refraction of the signal light.

[0050] In some embodiments, the first transparent plate 21 comprises glass or resin, and the second transparent plate 22 comprises glass or resin.

[0051] In a specific implementation process, the first transparent plate 21 and the second transparent plate 22 can be made of glass or resin, and 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 mechanical impact resistance of the near-eye display device 100 is better, and the weight of the lens 20 can be reduced, so that the near-eye display device 100 is more portable.

[0052] It should be noted that the person skilled in the art can select the material for preparing the lens 20 according to actual needs, including but not limited to that the first transparent plate 21 is resin and the second transparent plate 22 is glass; or the first transparent plate 21 and the second transparent plate 22 are made of the same material, etc., and the specific preparation material and combination mode of the lens 20 plate are not limited in the present application.

[0053] In some embodiments, the adjusting assembly 23 comprises a plurality of adjusting pieces, and the edge region 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 adjusting pieces, and the edge region is a region at the boundary of the second transparent plate 22.

[0054] Please refer to FIG. 4, which is a schematic diagram of the second transparent plate 22 provided by an embodiment of the present application.

[0055] As shown in FIG. 4, the region between the boundary and the dashed line is the edge region, and the adjusting pieces can be arranged at any position of the edge region to adjust the relative distance between the first transparent plate 21 and the second transparent plate 22, so as to achieve the refraction of the signal light.

[0056] In a specific implementation, the ratio of the area of one edge region to the area of the first transparent plate 21 is less than or equal to 0.25, and it should be understood that the person skilled in the art can set the size of the edge region according to actual needs, and the size of the edge region is not limited in the present application.

[0057] Referring to FIG. 5, FIG. 5 is a structural schematic diagram of the lens 20 provided by an embodiment of the present application.

[0058] In some embodiments, the number of the adjusting components is greater than or equal to the number of the corner points in the second transparent plate 22, and each of the corner points in the second transparent plate 22 is connected to the first transparent plate 21 by an adjusting component.

[0059] As shown in FIG. 5, in the case that the second transparent plate 22 is a rectangle, the corner points of the second transparent plate 22 are used to indicate the corresponding corners of the rectangle, for example, in the case that the second transparent plate 22 is a square, the corner points indicate the positions corresponding to the four right angles of the square, and each of the right angles is connected to the first transparent plate 21 by an adjusting component, so that the adjusting component can adjust the relative distance between the second transparent plate 22 and the first transparent plate 21. The adjusting components arranged at the corner points can not only meet the requirement of flexibly adjusting the relative distance between the second transparent plate 22 and the first transparent plate 21, but also reduce the manufacturing cost of the adjusting components, thereby reducing the cost of the near-eye display device.

[0060] In some embodiments, the adjusting assembly 23 comprises piezoelectric material, wherein the adjusting assembly 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.

[0061] For example, the adjusting assembly 23 is prepared by piezoelectric material, and it should be understood that the piezoelectric material can generate corresponding mechanical deformation when receiving the 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.

[0062] In the specific implementation process, the controller can apply working voltage to the adjusting assembly 23 to make the adjusting assembly 23 generate corresponding mechanical deformation to adjust the relative distance between the first transparent plate 21 and the second transparent plate 22. In the case that the adjusting assembly 23 comprises a plurality of adjusting components, each of the adjusting components is prepared by piezoelectric material, so that the controller can apply corresponding working voltage to each of the adjusting components to make the lens 20 refract the signal light of the sub-image in multiple angles.

[0063] The near-eye display device 100 provided by the above embodiments can determine a plurality of sub-images according to the to-be-displayed image, make the light machine emit the signal light corresponding to each of the sub-images one by one, and control the lens 20 to refract the signal light of the sub-image, so that the signal light of the plurality of sub-images emitted from the light machine 10 can be incident into the corresponding preset region in the optical waveguide 30, to achieve the purpose of image display splicing of the plurality of sub-images, so that the user can watch the target image corresponding to the to-be-displayed image, 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.

[0064] Referring to FIG. 6, FIG. 6 is a flowchart of a display method according to an embodiment of the present application.

[0065] As shown in FIG. 6, the display method is applied to the near-eye display device 100 according to the embodiments described above, and the display method includes S101-S103.

[0066] S101, obtaining an image to be displayed.

[0067] For example, the image to be displayed can be obtained according to actual display requirements of a user, and the image to be displayed includes, but is not limited to, a photo and a display interface.

[0068] S102, performing pixel interpolation processing on the image to be displayed to obtain a plurality of sub-images of a target image corresponding to the image to be displayed.

[0069] For example, after the image to be displayed is determined, pixel interpolation processing is performed on the image to be displayed to obtain a plurality of images, and it should be understood that the plurality of images obtained are sub-images of the target image to be displayed. Specifically, the pixel values of adjacent pixels are obtained, and the average value of the two pixels is taken as the pixel value of the inserted pixel, so that the image after pixel insertion is closer to the image to be displayed. However, since the target image to be displayed is composed of a plurality of sub-images obtained by pixel interpolation processing, the number of pixels of the target image to be displayed is more than that of the image to be displayed, thereby improving the resolution of the target image to be displayed.

[0070] S103, controlling the sub-images emitted to the lens 20 according to the working state of the adjusting assembly 23 in the lens 20, so that the signal light corresponding to each of the sub-images is refracted by the lens 20 and then respectively incident on a preset region of the optical waveguide 30 in the near-eye display device 100, to complete display splicing of the plurality of sub-images and display the target image corresponding to the image to be displayed.

[0071] For example, the near-eye display device controls the working state of the adjusting assembly 23 in the lens 20 to enable the lens 20 to refract the signal light passing through, and controls the sub-images emitted to the lens 20, so that the signal light corresponding to each of the sub-images is refracted by the lens 20 and then respectively incident on a corresponding region of the optical waveguide 30, so that the signal light corresponding to different sub-images is projected on different regions of the optical waveguide 30, thereby completing display splicing of the plurality of sub-images, so that a user wearing the near-eye display device 100 can see the corresponding target image at a position corresponding to the optical waveguide 30.

[0072] It should be understood that the different projection regions corresponding to the signal light corresponding to different sub-images are all located in the coupling-in region of the optical waveguide 30, so that the signal light corresponding to all sub-images can be transmitted directionally by the optical waveguide 30 to the eyes of the user.

[0073] In a specific implementation process, 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 generated according to the to-be-displayed image, the lens 20 needs to refract the signal light corresponding to the four sub-images to four regions on the optical waveguide 30, and in this process, the lens 20 provides four refraction angles to enable the sub-images to be reassembled into an image. If nine sub-images are generated according to the to-be-displayed image, the lens 20 can refract the signal light corresponding to the nine sub-images to the corresponding nine regions on the optical waveguide 30 to realize image assembly. It should be understood that the more the number of sub-images determined according to the to-be-displayed image, the higher the resolution of the target image finally displayed.

[0074] Please refer to FIG. 7, which is a schematic diagram of a target display image provided by an embodiment of the present application.

[0075] As shown in FIG. 7, the pixel values corresponding to the to-be-displayed image are all represented by 0, and the image is taken as a first sub-image. The second, third and fourth sub-images are obtained by performing pixel interpolation processing on the to-be-displayed image. 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 a specific implementation process, when the optical machine emits the first sub-image, the lens 20 is controlled to deflect the signal light corresponding to the first sub-image to the upper left corner, so that the signal light of the first sub-image is incident on the corresponding region. When the optical machine emits the second sub-image, the lens 20 is controlled to deflect the signal light corresponding to the second sub-image to the upper right corner. When the optical machine emits the third and fourth sub-images, the lens 20 is controlled to deflect the signal light corresponding to the third sub-image to the lower right corner, and the lens 20 is controlled to deflect the signal light corresponding to the fourth sub-image to the lower left corner, so that each sub-image is sequentially projected into the corresponding region of the optical waveguide to complete the display assembly of the sub-images, and the target image can be displayed. It can be understood that the number of pixels of the target image finally displayed is more than that of the to-be-displayed image, thereby improving the resolution of the display image.

[0076] It should be noted that the sub-image generation process of FIG. 7 is for illustrative purposes. In a specific implementation process, more sub-images can be determined according to the to-be-displayed image, and the determined sub-images are displayed in the corresponding regions to realize image assembly display. The number of sub-images is not limited in the present application.

[0077] In some embodiments, the adjusting assembly comprises a plurality of adjusting members, each corner point of the second transparent plate is connected to the first transparent plate through a corresponding adjusting member; the method further comprises: determining the voltage applied to each adjusting member and / or the duration of the applied voltage to control the working state of the adjusting assembly.

[0078] For example, the adjusting member can generate a corresponding mechanical deformation according to the applied voltage, specifically, generate an elongation or shortening mechanical deformation according to the size of the applied voltage, to adjust the distance between the second transparent plate and the first transparent plate, and further control the refraction angle of the signal light corresponding to each sub-image by the lens.

[0079] For example, taking a rectangular second transparent plate as an example, each corner point of the rectangular second transparent plate is connected to the first transparent plate through a corresponding adjusting member; by determining the voltage applied to each adjusting member and / or the duration of the applied voltage, the deflection angle of the second transparent plate relative to the first transparent plate is controlled, thereby controlling the refraction angle of the signal light passing through the lens.

[0080] In some embodiments, the determination of the voltage applied to each adjusting member and / or the duration of the applied voltage comprises: applying different voltages to at least one adjusting member when the adjusting assembly is in different working states.

[0081] For example, when the adjusting assembly is in different working states, the lens can refract the signal light passing through it at different angles, so that the signal light passing through the lens is projected into different regions of the optical waveguide; in a specific implementation process, by applying different voltages to the adjusting member, the elongation or shortening degree of the adjusting member is controlled, thereby adjusting the refraction angle of the signal light.

[0082] Specifically, taking a square second transparent plate in the lens and signal light incident from the first transparent plate and emitted from the second transparent plate as an example, the refraction phenomenon realized by the lens is described.

[0083] The right upper corner, the right lower corner, the left lower corner and the left upper corner in the second transparent plate are connected to the first transparent plate through adjusting members in the direction of the incident signal light.

[0084] If a positive voltage is applied to the adjusting members of the right upper corner and the right lower corner, and a reverse voltage or no voltage is applied to the adjusting members of the left upper corner and the left lower corner, the distance between the right side of the second transparent plate and the first transparent plate is larger than the distance between the left side of the second transparent plate and the first transparent plate, so that the signal light passing through is deflected to the right side.

[0085] By applying voltages in the opposite way, 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 side.

[0086] In the above two working states, the lens can realize the splicing display of the left and right two sub-images.

[0087] Further, the reverse voltage is applied to the adjusting member at the lower right corner, and the positive voltage is applied to the adjusting member at the upper left corner, so that the signal light passing through the lens is deflected to the upper left corner, so that the signal light can be projected into the first area shown in FIG. 3.

[0088] The reverse voltage is applied to the adjusting member at the lower left corner, and the positive voltage is applied to the adjusting member at the upper right corner, so that the signal light passing through the lens is deflected to the upper right corner, and specifically, so that the signal light can be projected into the second area shown in FIG. 3.

[0089] The reverse voltage is applied to the adjusting member at the upper left corner, and the positive voltage is applied to the adjusting member at the lower right corner, so that the signal light passing through the lens is deflected to the lower right corner, so that the signal light can be projected into the third area shown in FIG. 3.

[0090] The reverse voltage is applied to the adjusting member at the upper right corner, and the positive voltage is applied to the adjusting member at the lower left corner, so that the signal light passing through the lens is deflected to the lower left corner, so that the signal light can be projected into the fourth area shown in FIG. 3.

[0091] By controlling the lens to refract the signal light passing through in the above-mentioned manner in turn, it should be understood that the signal light emitted is different when the lens refracts the signal light at different angles, so that the signal light corresponding to different sub-images can realize display splicing in the optical waveguide, thereby displaying the target image.

[0092] The display method provided in the above-mentioned embodiment controls the signal light emitted by the light machine and the refractive angle of the signal light passing through the lens, so that the signal light of different sub-images emitted by the light machine can be projected into different areas of the optical waveguide through the lens, to realize the display splicing of the image, and since the sub-image is obtained by pixel interpolation processing of the to-be-displayed image, the resolution of the target image obtained and displayed by splicing is higher than that of the to-be-displayed image, thereby realizing the improvement of the image display resolution, and reducing the difficulty and cost required for improving the image display resolution.

[0093] It should be understood that the terms used in this application specification are only for the purpose of describing specific embodiments and are not intended to limit the application. As used in the specification and the appended claims of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0094] It should also be understood that, in the specification and the appended claims, the terms "and / or" is used to mean one or more of the associated listed items, as well as any combination of any of the associated listed items. It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

[0095] The above-mentioned embodiment serial numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments. The above is only a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A near-eye display device, comprising, 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 performing pixel interpolation on the image to be displayed; a lens comprising a transparent member and oppositely arranged first and second transparent plates, the transparent member being located between the first and second transparent plates, the first and second transparent plates being connected by an adjusting assembly configured to adjust the distance between the second and first transparent plates; an optical waveguide configured to propagate the incident signal light into the eyes of a user wearing the near-eye display device; a controller electrically connected to the optical engine and the adjusting assembly of the lens; wherein the controller is capable of controlling the adjusting assembly to be in different working states, and controlling the optical engine to emit the signal light corresponding to the sub-images in sequence when the adjusting assembly is in different working states, the signal light corresponding to each of the sub-images being incident into a corresponding preset region of the optical waveguide after being refracted by the lens, so as to complete display splicing of the sub-images in the optical waveguide and display a target image corresponding to the image to be displayed.

2. The near-eye display device of claim 1, wherein, The adjusting assembly comprises a plurality of adjusting members, the edge region of the surface of the second transparent plate facing the first transparent plate is connected to the first transparent plate by the adjusting members, and the edge region is a region close to the boundary of the second transparent plate.

3. The near-eye display device of 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 by the adjusting members.

4. The near-eye display device of claim 1, wherein, The adjusting assembly comprises piezoelectric material. The adjusting assembly generates corresponding mechanical deformation according to the applied voltage to adjust the distance between the second and first transparent plates.

5. The near-eye display device of claim 2, wherein, The adjusting assembly comprises piezoelectric material. The adjusting assembly generates corresponding mechanical deformation according to the applied voltage to adjust the distance between the second and first transparent plates.

6. The near-eye display device of claim 3, wherein, The adjusting assembly comprises piezoelectric material. The adjusting assembly generates corresponding mechanical deformation according to the applied voltage to adjust the distance between the second and first transparent plates.

7. The near-eye display device of claim 1, wherein, The transparent member comprises a deformable elastomer or a liquid.

8. The near-eye display device of claim 2, wherein, The transparent member comprises a deformable elastomer or a liquid.

9. The near-eye display device of claim 3, wherein, The transparent member comprises a deformable elastomer or a liquid.

10. The near-eye display device of claim 1, wherein, The lens is arranged on the light-emitting assembly of the optical engine; or The lens is arranged 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.

11. The near-eye display device of claim 2, wherein, The lens is arranged on the light-emitting assembly of the optical engine; or The lens is arranged 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.

12. The near-eye display device of claim 3, wherein, The lens is arranged on the light-emitting assembly of the optical engine; or The lens is arranged 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.

13. The near-eye display device of claim 1, 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.

14. The near-eye display device of claim 2, 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.

15. The near-eye display device of claim 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.

16. The near-eye display device of claim 1, wherein, The first transparent plate comprises glass or resin, and the second transparent plate comprises glass or resin.

17. The near-eye display device of claim 2, wherein, The first transparent plate comprises glass or resin, and the second transparent plate comprises glass or resin.

18. A display method, wherein, The display method is applied to the near-eye display device of claim 1, and the display method comprises: acquiring a to-be-displayed image; performing pixel interpolation processing on the to-be-displayed image to obtain a plurality of sub-images of a target image corresponding to the to-be-displayed image; controlling the sub-images emitted from the lens according to the working state of the adjusting assembly in the lens, so that the signal light corresponding to each of the sub-images is incident on a corresponding preset region of the optical waveguide in the near-eye display device through refraction of the lens, to complete display splicing of the plurality of sub-images and display the target image corresponding to the to-be-displayed image.

19. The display method of claim 18, wherein, The adjusting assembly comprises a plurality of adjusting members, and each corner point of the second transparent plate is connected to the first transparent plate through a corresponding adjusting member; the method further comprises: determining the voltage applied to each adjusting member and / or the duration of the applied voltage to control the working state of the adjusting assembly.

20. The display method of claim 19, wherein, The method further comprises: The voltage applied to at least one adjusting member is different when the adjusting assembly is in different working states.

Images