Display device and wearable display equipment

Abstract

The present disclosure provides a display device and a wearable display device, comprising: a lens unit, configured to receive external light for optical imaging to form a first light; a sensor unit, arranged on the light-emitting side of the lens unit, configured to receive the first light and form a first image and a second image, wherein the first image partially overlaps with the second image. The present disclosure obtains external light through a single lens unit, and after imaging through the sensor unit, generates two partially overlapping images, and uses these two images to simulate the real image obtained by the field of view of the left and right eyes of the human body, so that the images of different viewing angles are respectively transmitted to the left and right eye display screens of the external near-eye display device, solving the problem that a single camera cannot form dual viewing angles and stereoscopic vision, and only obtains external light through a single lens, which saves costs compared to dual cameras or multiple cameras.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display device and a wearable display equipment. Background Art

[0002] Near-eye display is a current research hotspot. When using near-eye display devices such as MR (Mix Reality) and VR (Virtual Reality) to view real-world scenes, they generally use cameras installed on the display device or cameras on other devices to capture the scene and then transmit it to the display end for display.

[0003] However, current cameras either capture identical left and right eye images for display, which has no sense of depth and cannot form stereoscopic vision; or use multiple cameras for image capture, which can form stereoscopic vision but significantly increases manufacturing costs. Summary of the invention

[0004] In view of this, the purpose of the present disclosure is to provide a display device and a wearable display equipment.

[0005] Based on the above objectives, the present disclosure provides a display device, including:

[0006] A lens unit, configured to receive external light for optical imaging to form a first light;

[0007] The sensor unit is disposed on the light-emitting side of the lens unit and is configured to receive the first light and form a first image and a second image, wherein the first image partially overlaps with the second image.

[0008] Based on the same concept, the present disclosure also provides a wearable display device, including the display device as described above.

[0009] From the above, it can be seen that the present disclosure provides a display device and a wearable display device, including: a lens unit, configured to receive external light for optical imaging to form a first light; a sensor unit, arranged on the light-emitting side of the lens unit, configured to receive the first light and form a first image and a second image, wherein the first image partially overlaps with the second image. The present disclosure obtains external light through a single lens unit, and after imaging through the sensor unit, generates two partially overlapping images, and uses these two images to simulate the real image obtained by the field of view of the left and right eyes of the human body, so that the images of different viewing angles are respectively transmitted to the left and right eye display screens of the external near-eye display device, solving the problem that a single camera cannot form dual viewing angles and stereoscopic vision, and only obtains external light through a single lens, which saves costs compared to dual cameras or multiple cameras. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present disclosure;

[0012] Figure 2 A schematic diagram of the structure of another display device provided by an embodiment of the present disclosure;

[0013] Figure 3 A schematic diagram of a field of view angle of a display device provided in an embodiment of the present disclosure;

[0014] Figure 4 A schematic diagram of the structure of a wearable display device provided in an embodiment of the present disclosure;

[0015] Figure 5 A schematic diagram of the structure of another wearable display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of this specification more clear, this specification is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0017] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements, objects or method steps appearing before the word cover the elements, objects or method steps listed after the word and their equivalents, without excluding other elements, objects or method steps. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] As described in the background technology section, the current usage of cameras in near-eye display devices such as MR and VR is generally divided into two categories. One is to use only a camera with a large field of view to capture images in a fixed field of view. The user's left and right eyes see exactly the same content, with no sense of depth and unable to form stereoscopic vision. The other is to use two or more cameras to simulate the image range seen by the left and right eyes respectively. Although the user can form stereoscopic vision, the manufacturing cost is significantly increased.

[0019] In view of the above-mentioned actual situation, an embodiment of the present disclosure proposes a display device, which obtains external light through a single lens unit, and after imaging through a sensor unit, generates two partially overlapping images, and simulates the real image obtained by the field of view of the left and right eyes of the human body through these two images, so as to transmit the pictures of different viewing angles to the left and right eye display screens of an external near-eye display device respectively, thereby solving the problem that a single camera cannot form dual viewing angles and stereoscopic vision, and obtaining external light only through a single lens, which saves costs compared with dual cameras or multiple cameras.

[0020] like Figure 1 FIG. 1 is a schematic diagram of a structure of a display device provided by the present disclosure, comprising:

[0021] The lens unit 110 is configured to receive the external light 100 for optical imaging to form a first light 101;

[0022] The sensor unit 120 is disposed on the light-emitting side of the lens unit 110 , and is configured to receive the first light 101 and form a first image and a second image, wherein the first image partially overlaps with the second image.

[0023] The lens unit 110 mainly focuses the external environment light to form an image, such as the lens of a camera or a video camera, so that the light of the external environment can be completely focused and formed in the device. It can generally be a single lens (such as a double-sided convex lens, etc.) or a lens group composed of multiple lenses (such as Figure 1 The lens unit 110 generally uses the principle of pinhole imaging, and the optical image generated by the lens unit 110 is generally opposite to the normal scene outside, and the scene is flipped 180° during imaging.

[0024] Afterwards, the sensor unit 120 generally mainly includes an image sensor, which utilizes the photoelectric conversion function of a photoelectric device to convert the light image on the photosensitive surface into an electrical signal that is proportional to the light image. Compared with photosensitive elements such as "point" light sources such as photodiodes and phototransistors, image sensors are functional devices that divide the light image on their light-receiving surface into many small units and convert them into usable electrical signals. After receiving the first light, the sensor unit 120 can directly allow it to irradiate the sensor, or it can first perform splitting or beam splitting on the first light, and then allow the split or beam-split light to irradiate one or more sensors, wherein splitting or beam splitting means that when a beam of light is projected onto a beam splitter such as a semi-transparent and semi-reflective mirror or coated glass, the light beam is divided into two or more beams through reflection and refraction. Afterwards, a first image and a second image are generated, wherein the first image and the second image are integrated to obtain a complete image of the optical imaging of the first light, but the first image and the second image are only partial images of the complete image, wherein one image is similar to the image that can be obtained within the field of view of the left eye of the human eye, and the other image is similar to the image that can be obtained within the field of view of the right eye of the human eye, and one of the two images lacks a left part of the overall image, and the other lacks a right part of the overall image. The process of generating the image can be that the sensor performs cutting after generating the complete image, such as the aforementioned embodiment of allowing the first light to directly illuminate the sensor, such as Figure 2 As shown; or the light received by the sensor itself lacks some light, and the sensor only converts the acquired image into a corresponding image. For example, in the above-mentioned embodiment where the first light is split and then irradiated onto the sensor, the range of the light after the splitting is larger than the sensing range of the sensor, such as Figure 1 This simulates that the left and right eyes of a human eye receive different external images. The image received by the left eye will be missing the right part of the overall image, and the image received by the right eye will be missing the left part of the overall image.

[0025] As can be seen from the above, a display device provided by the present disclosure includes: a lens unit, configured to receive external light for optical imaging to form a first light; a sensor unit, arranged on the light-emitting side of the lens unit, configured to receive the first light and form a first image and a second image, wherein the first image partially overlaps with the second image. The present disclosure obtains external light through a single lens unit, and after imaging through the sensor unit, generates two partially overlapping images, and uses these two images to simulate the real image obtained by the field of view of the left and right eyes of the human body, so that the images of different viewing angles are respectively transmitted to the left and right eye display screens of the external near-eye display device, solving the problem that a single camera cannot form dual viewing angles and stereoscopic vision, and only obtains external light through a single lens, which saves costs compared to dual cameras or multiple cameras.

[0026] In specific application scenarios, in order to simplify the workload of the sensor, the image it receives can be used directly to save the time of image segmentation. Figure 1 As shown, the sensor unit 120 includes: a semi-transparent and semi-reflective mirror 121, which is configured to split the first light 101 to form a second light 102 and a third light 103 in two directions respectively; a first image sensor 122, which is configured to receive the second light 102 with the portion corresponding to the first set range on the first side of the first light 101 removed to generate the first image; a second image sensor 123, which is configured to receive the third light 103 with the portion corresponding to the second set range on the second side of the first light 101 removed to generate the second image; wherein the first side and the second side are opposite sides of the first light 101 projected on a plane.

[0027] At the same time, in order to adapt to the field of view of the human eye, the image displayed by the display device can simulate the image viewed by the left and right eyes of the human eye as much as possible. The first image sensor and the second image sensor are configured to determine the first side or the second side according to the field of view of the left eye or the right eye of the user. According to the structure of the human body, the field of view of the left and right eyes has a certain deviation range. For this reason, the first setting range is the range of the first light corresponding to any degree between 10 degrees and 30 degrees from the edge of the light emitting field angle of the lens unit close to the first side; the second setting range is the range of the first light corresponding to any degree between 10 degrees and 30 degrees from the edge of the light emitting field angle of the lens unit close to the second side. Figure 3 As shown, angle 001 is the light output field angle of the lens unit, and angle 002 is an angle of any degree between 10 degrees and 30 degrees from the edge of the light output field angle of the lens unit close to the first side.

[0028] In specific application scenarios, such as Figure 1 As shown, the semi-transparent and semi-reflective mirror 121 is placed behind the lens unit 110, tilted at 45 degrees, and its center is aligned with the optical axis of the lens unit 110; the external light 100 passes through the semi-transparent and semi-reflective mirror 121, part of the light is transmitted, and part of the light is reflected.

[0029] Most of the transmitted light is received by the first image sensor 122. The image of the first image sensor 122 will be transmitted to the left eye display screen of the near-eye display device. Therefore, the size of the first image sensor 122 is slightly smaller than the size of the sensor that can receive all the transmitted light, and its center is biased upward relative to the optical axis of the lens unit 110, so that the first image sensor 122 does not receive the light of the field of view close to the lower edge of the picture. The field of view that is not received is about 10° to 30° from the lower edge to the center. Because the camera lens will flip the scene 180° when imaging, the first image sensor 122 actually does not receive the right edge of the real scene, which is consistent with the viewing range of the human eye.

[0030] Most of the reflected light is received by the second image sensor 123, and the image of the second image sensor 123 will be transmitted to the right eye display screen of the near-eye display device. The model of the second image sensor 123 is the same as that of the first image sensor 122, and its center is left relative to the optical axis (after reflection) of the lens unit 110, so that the second image sensor 123 does not receive the light of the field of view close to the right edge of the image, and the field of view that is not received ranges from about 10° to 30° from the right edge to the center. Because the camera lens will flip the scene 180° when imaging, the second image sensor 123 actually does not receive the left edge of the real scene, which is consistent with the viewing range of the human eye.

[0031] The images received by the first image sensor 122 and the second image sensor 123 are respectively transmitted to the left and right display screens of the near-eye display device for display, so that the user can see a stereoscopic image with parallax.

[0032] In a specific application scenario, in order to ensure that the brightness and clarity of the first image and the second image are consistent, the transmissive and reflective ratio of the semi-transparent and semi-reflective mirror is 1:1.

[0033] In specific application scenarios, in order to save space for the overall device, it can be adapted to a structure with a smaller installation space. Figure 2 As shown, the sensor unit 120 includes: a full image sensor 124, which is configured to receive the first light 101 to form an optical image, remove the image within a first set range on a first side of the optical image to generate the first image, and remove the image within a second set range on a second side of the optical image opposite to the first side to generate the second image.

[0034] At the same time, in order to adapt to the field of view of the human eye, the image displayed by the display device can simulate the image viewed by the left and right eyes of the human eye as much as possible. The full image sensor is configured to determine the first side or the second side according to the field of view of the left eye or the right eye of the user. According to the structure of the human body, the field of view of the left and right eyes has a certain deviation range. For this reason, the first setting range is the range of the optical image corresponding to any degree from 10 degrees to 30 degrees from the edge of the light emitting field of view of the lens unit close to the first side; the second setting range is the range of the optical image corresponding to any degree from 10 degrees to 30 degrees from the edge of the light emitting field of view of the lens unit close to the second side. Among them, the angles involved in this specific application scenario are similar to the angles involved in the previous specific application scenario.

[0035] In specific application scenarios, such as Figure 2 As shown, external light 100 is focused and imaged by a camera lens unit 110 , and the lens unit 110 is a single lens or a lens group composed of multiple lenses.

[0036] The full image sensor 124 receives the first light 101 passing through the lens unit 110, and is controlled by a software program, wherein an image excluding the upper portion of the image on the sensor is transmitted to the right eye display screen of the near-eye display device, and the range of the image excluding the upper portion is a field of view range of approximately 10° to 30° from the upper edge to the center; and an image excluding the lower portion of the image on the sensor is transmitted to the left eye display screen of the near-eye display device, and the range of the image excluding the lower portion is a field of view range of approximately 10° to 30° from the lower edge to the center.

[0037] Because the camera lens flips the scene 180° when imaging, the image transmitted to the right eye display screen does not actually include the left edge of the real scene, and the image transmitted to the left eye display screen does not actually include the right edge of the real scene, which is consistent with the viewing range of the human eye. When the user actually watches, he can see a three-dimensional picture with parallax.

[0038] It should be noted that the embodiments of the present disclosure may be further described in the following manner:

[0039] In some embodiments, the sensor unit comprises:

[0040] a semi-transparent and semi-reflective mirror, configured to split the first light to form a second light and a third light in two directions respectively;

[0041] A first image sensor is configured to receive a second light beam from which a portion corresponding to a light beam in a first set range on a first side of the first light beam is removed, so as to generate the first image;

[0042] a second image sensor configured to receive a third light beam from which a portion corresponding to a light beam in a second set range on a second side of the first light beam is removed, so as to generate the second image;

[0043] The first side and the second side are opposite sides of the first light projected on the plane.

[0044] In some embodiments, the first image sensor and the second image sensor are configured to determine the first side or the second side according to a field of view of a left eye or a right eye of a user.

[0045] In some embodiments, wherein,

[0046] The first setting range is a range of the first light corresponding to any degree between 10 degrees and 30 degrees from the edge of the lens unit's light output field angle close to the first side;

[0047] The second setting range is a range of the first light corresponding to any degree between 10 degrees and 30 degrees from the edge of the lens unit's light output field angle close to the second side.

[0048] In some embodiments, the transmission-reflection ratio of the semi-transparent and semi-reflective mirror is 1:1.

[0049] In some embodiments, the sensor unit comprises:

[0050] The full image sensor is configured to receive the first light to form an optical image, remove an image within a first set range on a first side of the optical image to generate the first image, and remove an image within a second set range on a second side of the optical image opposite to the first side to generate the second image.

[0051] In some embodiments, the full image sensor is configured to determine the first side or the second side according to a field of view of a left eye or a right eye of a user.

[0052] In some embodiments, wherein,

[0053] The first setting range is a range of the optical image corresponding to any degree between 10 degrees and 30 degrees from the edge of the light output field angle of the lens unit close to the first side;

[0054] The second setting range is a range of the optical image corresponding to any degree between 10 degrees and 30 degrees from the edge of the light output field angle of the lens unit close to the second side.

[0055] In some embodiments, the single lens unit is a single lens or a lens group composed of multiple lenses.

[0056] Based on the same concept, the present disclosure also provides a wearable display device, including the display device as described in any of the above embodiments. Figure 4 or Figure 5 As shown, it is a possible specific structural schematic diagram of a wearable display device.

[0057] The wearable display device of the above-mentioned embodiment is used to apply the corresponding display device in the above-mentioned embodiment, and has the beneficial effects of the embodiment of the corresponding display device, which will not be repeated here.

[0058] A person skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the concept of the present disclosure, the technical features in the above embodiments or different embodiments may also be combined, and there are many other variations of different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A display device, comprising: a lens unit configured to receive external light for optical imaging to form a first light; a sensor unit disposed on the light-emitting side of the lens unit and configured to receive the first light and form a first image and a second image, wherein the first image and the second image partially overlap; The sensor unit includes: a semi-transmissive semi-reflective mirror configured to split the first light to form a second light and a third light in two directions respectively; a first image sensor configured to receive the second light with the corresponding part of the light in a first set range on the first side of the first light removed to generate the first image; a second image sensor configured to receive the third light with the corresponding part of the light in a second set range on the second side of the first light removed to generate the second image; wherein the first side and the second side are opposite sides of the first light projected on a plane; The lens unit is a single lens or a lens group composed of multiple lenses.

2. The device according to claim 1, wherein the first image sensor and the second image sensor are configured to determine the first side or the second side according to the visual field range of the user's left eye or right eye.

3. The device according to claim 1, wherein the first set range is the range of the first light corresponding to any degree from 10 degrees to 30 degrees starting from the edge of the light-emitting field angle of the lens unit close to the first side; the second set range is the range of the first light corresponding to any degree from 10 degrees to 30 degrees starting from the edge of the light-emitting field angle of the lens unit close to the second side.

4. The device according to claim 1, wherein the transmittance-to-reflectance ratio of the semi-transmissive semi-reflective mirror is 1:

1.

5. A wearable display device comprising the display device according to any one of claims 1-4.

Images