Display apparatus

Abstract

A display apparatus (10), comprising two optical machines (100). Each optical machine comprises a display screen (110) and an optical element (120), wherein the display screen (110) is provided with a first side face (111) and a second side face (112), the optical element (120) is provided with a first contour (121) and a second contour (122), and a minimum value of the distance between the first contour (121) and an optical axis of the optical element (120) is less than a minimum value of the distance between the second contour (122) and the optical axis of the optical element (120). According to such display apparatus, by means of arranging an inner side of the optical element to be of a special-shaped structure, the size of the optical element can be reduced.

Description

Display device Technical Field

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

[0002] As consumer electronics display requirements continue to rise, virtual and augmented reality display technologies are gaining increasing attention. Virtual reality (VR), with its highly immersive experience, is increasingly popular among consumers. This demonstrates that the core essence of VR lies in immersion, and the key to achieving this immersion is panoramic vision. The field of view (FOV), representing the overall perspective, is a defining parameter of core optical technology. For currently available VR products, the field of view is limited by the optical lens. To achieve a better field of view (larger FOV), the distance between the observation point (eye) and the lens is typically shortened or the lens size is increased. However, there is a limit to how much distance can be shortened. Excessive reduction can affect wearing comfort, while excessively large lenses can increase product weight and compromise the user's visual experience. SUMMARY OF THE INVENTION

[0003] The embodiments of the present application provide a display device that can solve the problem that existing display devices cannot achieve a larger field of view angle while reducing the weight of the display device.

[0004] An embodiment of the present application provides a display device, including two optical engines arranged in parallel along a first direction, each optical engine including:

[0005] A display screen having a first side surface and a second side surface arranged opposite to each other along the first direction, wherein the first side surface is close to the other optical engine;

[0006] an optical element located on a display side of the display screen, the optical element being used to process a display image of the display screen and transmit the image to a corresponding observation point; the optical element having a first profile and a second profile arranged opposite to each other along the first direction, the first profile being close to the other optical engine;

[0007] The principal optical axis of the optical element passes through the display screen and is located on a side of the geometric center of the display screen close to the other optical engine; the minimum value of the distance between the first contour and the principal optical axis of the optical element is smaller than the minimum value of the distance between the second contour and the principal optical axis of the optical element.

[0008] Optionally, in some embodiments of the present application, the minimum value of the distance between the first side surface and the principal optical axis of the optical element is smaller than the minimum value of the distance between the second side surface and the principal optical axis of the optical element.

[0009] Optionally, in some embodiments of the present application, the display screen has a third side surface and a fourth side surface relative to each other along the second direction, the third side surface is connected between the first side surface and the second side surface, the fourth side surface is connected between the first side surface and the second side surface, and the second direction forms an angle with the first direction; a first notch is formed at the connection between the third side surface and the first side surface.

[0010] Optionally, in some embodiments of the present application, the optical element has a third profile and a fourth profile arranged relative to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; the minimum value of the distance between the third profile and the main optical axis of the optical element is less than the minimum value of the distance between the second profile and the main optical axis of the optical element.

[0011] Optionally, in some embodiments of the present application, the optical element has a third profile and a fourth profile arranged relative to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; the minimum value of the distance between the fourth profile and the main optical axis of the optical element is less than the minimum value of the distance between the second profile and the main optical axis of the optical element.

[0012] Optionally, in some embodiments of the present application, a second notch is formed at the connection between the fourth side surface and the first side surface.

[0013] Optionally, in some embodiments of the present application, a third notch is formed at the connection between the fourth side surface and the second side surface.

[0014] Optionally, in some embodiments of the present application, a fourth notch is formed at the connection between the third side surface and the second side surface.

[0015] Optionally, in some embodiments of the present application, the connecting surface formed by the first notch is at an angle of 145° to the first side surface.

[0016] Optionally, in some embodiments of the present application, the connecting surface formed by the first notch is at an angle of 145° to the third side surface.

[0017] Optionally, in some embodiments of the present application, the cross-section of the display screen is a regular octagon.

[0018] Optionally, in some embodiments of the present application, the first contour, the second contour, the third contour and the fourth contour are arc-shaped, and the curvatures of the first contour, the second contour, the third contour and the fourth contour are different.

[0019] Optionally, in some embodiments of the present application, the first contour, the third contour and the fourth contour are straight lines, the second contour is arc-shaped, and the center of curvature of the second contour is located on the main optical axis of the optical element; the first contour and the third contour are connected by a circular arc, and the first contour and the fourth contour are connected by a circular arc.

[0020] Optionally, in some embodiments of the present application, in the direction along the principal optical axis of the optical element, the orthographic projection of the display screen on the optical element is located within the optical element.

[0021] Optionally, in some embodiments of the present application, a minimum value of the distance between the fourth contour and the principal optical axis of the optical element is smaller than a minimum value of the distance between the third contour and the principal optical axis of the optical element.

[0022] Optionally, in some embodiments of the present application, the optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element passes through the second line.

[0023] Optionally, in some embodiments of the present application, the optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element is at an angle to the second line and does not intersect.

[0024] Optionally, in some embodiments of the present application, in the observation direction along the first direction, the sum of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 120°.

[0025] Optionally, in some embodiments of the present application, in the observation direction along the first direction, the combined angle of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 80°.

[0026] Optionally, in some embodiments of the present application, in the observation direction along the second direction, the field of view angles of the observation points corresponding to the two optical machines are greater than or equal to 90°. Beneficial effects

[0027] In an embodiment of the present application, a display device includes two optical engines arranged in parallel along a first direction, each optical engine including a display screen and an optical element. The display screen has a first side surface and a second side surface arranged relative to each other along the first direction, the first side surface being adjacent to the other optical engine. The optical element is located on the display side of the display screen, and the optical element is used to process the display image of the display screen and transmit it to a corresponding observation point. The optical element has a first profile and a second profile arranged relative to each other along the first direction, the first profile being adjacent to the other optical engine. The principal optical axis of the optical element passes through the display screen and is located on a side of the geometric center of the display screen adjacent to the other optical engine. The minimum value of the distance between the first profile and the principal optical axis of the optical element is smaller than the minimum value of the distance between the second profile and the principal optical axis of the optical element. By setting the minimum value of the distance between the first profile and the principal optical axis of the optical element to be smaller than the minimum value of the distance between the second profile and the principal optical axis, the inner side of the optical element is formed into a special-shaped structure. That is, when the observation point is at the same distance from the optical element and the horizontal field of view is the same, the size of the optical element can be reduced, thereby reducing the weight of the display device and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] FIG1 is a schematic structural diagram of an existing display device;

[0030] FIG2 is a schematic diagram of a top view of a conventional optical machine;

[0031] FIG3 is a schematic structural diagram of a display device provided in an embodiment of the present application;

[0032] FIG4 is a schematic diagram of a top view of an optical engine provided in an embodiment of the present application;

[0033] FIG5 is a schematic diagram of a top view of another optical machine provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] 10. Display device;

[0036] 100, optical engine; 110, 110a, display screen; 111, first side surface; 112, second side surface; 113, third side surface; 114, fourth side surface; 115, first notch; 116, second notch; 117, third notch; 118, fourth notch; 120, 120a, optical element; 121, first outline; 122, second outline; 123, third outline; 124, fourth outline; 125, arc; 130, magnified image;

[0037] X, first direction; Y, second direction; O, O1, principal optical axis; P, P1, geometric center; Q, Q1, optical center; S, observation point; L, first connecting line; N, second connecting line. Modes for Carrying Out the Invention

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0039] The present application provides a display device, which is described in detail below. It should be noted that the order in which the following embodiments are described does not limit the preferred order of the embodiments.

[0040] As shown in FIG3 , the display device 10 includes two optical machines 100 arranged in parallel along a first direction X. When the display device 10 is put into use, the human eyes correspond to the two optical machines 100 respectively, and the position of the human eyes corresponds to the observation point S of the optical machine 100. The first direction X is the distribution direction of the human eyes, that is, the horizontal direction. The direction indicated by the arrow in the first direction X is the distribution direction of the left eye and the right eye.

[0041] Each optical engine 100 includes a display screen 110 and an optical element 120, which can be composed of one or more lenses. The optical element 120 is located on the display side of the display screen 110. The display screen 110 is used to display images, and the optical element 120 is used to process the images displayed on the display screen 110 and transmit them to the corresponding observation point S. In other words, when the display device 10 is in use, the image displayed on the display screen 110 is refracted or reflected by the optical element 120 to produce a magnified image 130 at a distance. This image is then perceived by the human eye, which views the magnified image 130, achieving immersive vision.

[0042] As shown in Figures 4 and 5 (the optical-mechanical structure corresponding to the left eye), the display screen 110 has a first side surface 111 and a second side surface 112 arranged opposite each other along a first direction X. The first side surface 111 is adjacent to the other optical engine 100. Specifically, the first side surface 111 is located on the inner side of the nose when viewed by the human eye, while the second side surface 112 is located on the outer side when viewed by the human eye. Correspondingly, the optical element 120 has a first profile 121 and a second profile 122 arranged opposite each other along the first direction X, with the first profile 121 being located on the outer side of the other optical engine 100. For the human eye, the position between the first side surface 111 and the first profile 121 corresponds to the inner edge of the magnified image 130 observed by the human eye, while the position between the second side surface 112 and the second profile 122 corresponds to the outer edge of the magnified image 130 observed by the human eye. This affects the horizontal field of view of the human eye at the corresponding observation point S, thereby affecting the immersive experience.

[0043] It should be noted that the contour referred to in the embodiment of the present application is the outer contour of the positive projection of the optical element 120 on the plane where the display screen 110 is located, and the first contour 121 corresponds to the first side surface 111 of the display screen 110, and the second contour 122 corresponds to the second side surface 112 of the display screen 110, that is, the first contour 121 is the inner side close to the nose side when observed by the human eye, and the second contour 122 is the outer side when observed by the human eye.

[0044] The principal optical axis O of the optical element 120 passes through the display screen 110 and is located on the side of the geometric center P of the display screen 110 that is closer to the other optical engine 100. It should be noted that the principal optical axis O or optical center Q of the optical element 120 is fixed after the optical element 120 is formed, regardless of whether the optical element 120 is subsequently cut into other shapes. However, the geometric center P of the display screen 110 changes as the shape of the display screen 110 changes.

[0045] As shown in Figures 1 and 2 , when both display screen 110a and optical element 120a are regular shapes and assembled along the principal optical axis O1 of optical element 120a, the geometric center P1 of display screen 110a lies on the principal optical axis O1 of optical element 120a. That is, the principal optical axis O1 of optical element 120a passes through the optical center Q1 of optical element 120a and the geometric center P1 of display screen 110a. The dashed circle b represents the theoretical viewing angle range of a single optical engine 100 before profile cutting. As shown in Figures 4 and 5 , under the same horizontal field of view, if the principal optical axis O of optical element 120 lies on the side of the geometric center P of display screen 110 closer to another display screen 110, that is, the geometric center P of display screen 110 is offset toward the second side surface 112, this indicates that display screen 110 is misaligned relative to optical element 120 in the first direction X, or that the first side surface 111 of display screen 110 has been cut. The dashed circle a represents the outer contour of optical element 120 before profile cutting.

[0046] Correspondingly, the minimum value of the distance between the first contour 121 and the main optical axis O of the optical element 120 is smaller than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120, that is, the inner side of the optical element 120 is cut into a special shape to form the first contour 121 (as shown in Figures 4 and 5, the first contour 121 after special cutting is located in the dotted circle a), so that the size of the optical element 120 can be reduced while the horizontal field of view angle remains unchanged, thereby reducing the overall weight of the display device 10 and improving the user experience.

[0047] It should be noted that for a single eye, the horizontal field of view angle (α / 2) refers to the angle between the two horizontal edges of the magnified image 130 formed after the display screen of a single display screen 110 is magnified by the optical element 120 and the line connecting the human eye. For both eyes, the overall horizontal field of view angle refers to the sum of the angles between the outer edges of the magnified image 130 formed after the display screens of two display screens 110 are magnified by the corresponding optical elements 120 and the line connecting the human eye, relative to the principal optical axis O of the optical element 120.

[0048] Furthermore, due to the visual characteristics of the human eye, the area corresponding to the nose between the two eyes will partially obstruct the actual viewing angle. This obstructed area corresponds to the inner area of ​​the magnified image 130. Therefore, when the inner side of the optical element 120 is profiled, although the viewing angle of the inner side of each eye is reduced, the overall horizontal viewing angle of both eyes remains unchanged, which does not significantly affect the overall immersive visual experience and also reduces the overall weight of the display device 10. In other words, when the inner side of the optical element 120 is profiled, the cut size can be adjusted based on the degree of obstruction of the viewing angle by the area corresponding to the nose, thereby avoiding significantly affecting the user's immersive experience while reducing the size of the optical element 120.

[0049] In the embodiment of the present application, the display device 10 includes two optical machines 100 arranged in parallel along a first direction X, each optical machine 100 includes a display screen 110 and an optical element 120, the display screen 110 has a first side surface 111 and a second side surface 112 arranged opposite to each other along the first direction X, the first side surface 111 is close to the other optical machine 100, the optical element 120 is located on the display side of the display screen 110, and the optical element 120 is used to process the display image of the display screen 110 and transmit it to the corresponding observation point S; the optical element 120 has a first contour 121 and a second contour 122 arranged opposite to each other along the first direction X; wherein the main optical axis O of the optical element 120 passes through the display screen 110 and is located on the side of the geometric center P of the display screen 110 close to the other optical machine 100; the minimum value of the distance between the first contour 121 and the main optical axis O of the optical element 120 is less than the minimum value of the distance between the second contour 122 and the main optical axis O of the optical element 120. In the present application, the minimum value of the distance between the first contour 121 of the optical element 120 and the main optical axis O is set to be smaller than the minimum value of the distance between the second contour 122 and the main optical axis O, so that the inner side of the optical element 120 is cut into a special-shaped structure. That is, when the observation point S is at the same distance from the optical element 120 and the horizontal field of view is the same, the size of the optical element 120 can be reduced, thereby reducing the weight of the display device 10 and improving the user experience; conversely, when the aperture corresponding to the same optical element 120 is the same, a larger horizontal field of view can be achieved to improve the user's immersive visual experience.

[0050] Optionally, as shown in Figures 4 and 5 , the minimum distance between the first side surface 111 of the display screen 110 and the principal optical axis O of the optical element 120 is less than the minimum distance between the second side surface 112 and the principal optical axis O of the optical element 120. In other words, the inner side of the display screen 110 can also be profiled (e.g., at least a portion of the profiled first side surface 111 in Figures 4 and 5 is located within the dotted circle b). This allows the display screen 110 to be reduced in size while maintaining the overall horizontal field of view, thereby reducing the weight of the display device 10, improving the user experience, and increasing the effective utilization of the display screen 110.

[0051] It should be noted that, since the overall horizontal field of view angle is related to the outer edge of the magnified image 130 formed after the display screens of the two display screens 110 are magnified by the corresponding optical elements 120, in order to ensure that the outer edges of the magnified image 130 formed by the display screen 110 and the optical element 120 after special-shaped cutting remain unchanged (such as the second side surface 112 in Figures 4 and 5 is always located outside the dotted circle b), the embodiment of the present application mainly performs special-shaped processing on the inner sides of the display screen 110 and the optical element 120 to achieve a reduction in the size of the optical element 120 and the display screen 110 while keeping the overall horizontal field of view angle unchanged.

[0052] Optionally, as shown in FIG4 , the display screen 110 has a third side surface 113 and a fourth side surface 114 that are opposite to each other along a second direction Y. The third side surface 113 is connected between the first side surface 111 and the second side surface 112, and the fourth side surface 114 is connected between the first side surface 111 and the second side surface 112. The second direction Y forms an angle with the first direction X. It should be noted that the third side surface 113 is the lower side when viewed by the human eye, and the fourth side surface 114 is the upper side when viewed by the human eye. The second direction Y is the vertical direction viewed by the human eye. For the human eye, when viewing, the position of the third side surface 113 is related to the lower edge of the magnified image 130 observed by the human eye, and the position of the fourth side surface 114 is related to the upper edge of the magnified image 130 observed by the human eye, thereby affecting the vertical field of view of the human eye at the corresponding observation point S.

[0053] A first notch 115 is formed at the junction of the third side surface 113 and the first side surface 111, specifically, at the lower right corner corresponding to the viewing area of ​​the human eye (left eye). Accordingly, the optical element 120 can also be further shaped at the location corresponding to the first notch 115. It should be noted that the obstructed area corresponding to the nose between the eyes is also located at the lower right corner corresponding to the viewing area of ​​the human eye (left eye). Forming the first notch 115 at this location effectively eliminates the ineffective display area, further reducing the size of the display screen 110, lowering the overall weight of the display device 10, and improving the effective utilization of the display screen 110, while also avoiding a significant impact on the user's immersive experience.

[0054] In some embodiments, the first notch 115 can be formed by cutting the connection between the third side surface 113 and the first side surface 111 at a 45-degree angle. That is, the connection surface formed by the first notch 115 forms a 145-degree angle with both the first side surface 111 and the third side surface 113. The cutting angle of the first notch 115 can be designed and adjusted based on the actual occlusion angle of the occlusion area corresponding to the nose between the human eyes to ensure a better immersive experience for the user.

[0055] Optionally, the optical element 120 has a third profile 123 and a fourth profile 124 arranged opposite each other along the second direction Y. The third profile 123 is connected between the first profile 121 and the second profile 122, and the fourth profile 124 is connected between the first profile 121 and the second profile 122. That is, the third profile 123 corresponds to the third side surface 113 of the display screen 110, and the fourth profile 124 corresponds to the fourth side surface 114 of the display screen 110. For the human eye, when observing, the position between the third side surface 113 and the third profile 123 corresponds to the lower edge of the magnified image 130 observed by the human eye, and the position between the fourth side surface 114 and the fourth profile 124 corresponds to the upper edge of the magnified image 130 observed by the human eye. This affects the vertical field of view (β / 2) of the human eye at the corresponding observation point S, thereby affecting the immersive experience.

[0056] It should be noted that, according to the visual characteristics of the human eye, during actual observation, the overall vertical field of view angle of the human eye is smaller than the horizontal field of view angle, that is, the entire observation field range of the human eye is elliptical, that is, the upper and lower sides of the optical element 120 and / or the display screen 110 can be cut into special shapes to maximize the utilization of the optical element 120 and / or the display screen 110.

[0057] In some embodiments, the minimum distance between the third contour 123 and the principal optical axis O of the optical element 120 is less than the minimum distance between the second contour 122 and the principal optical axis O of the optical element 120. That is, the lower side of the optical element 120 is profiled to form the third contour 123 (as shown in FIG4 and FIG5 , where the profiled third contour 123 is located within the dotted circle a). This allows the optical engine 100 to further reduce the size of the optical element 120 while maintaining a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.

[0058] Correspondingly, the third side surface 113 of the display screen 110, that is, the lower side of the display screen 110, can also be cut (as shown in Figures 4 and 5, the third side surface 113 after special-shaped cutting is at least partially located within the dotted circle b) to reduce the width of the upper and lower sides of the display screen 110, so that when the optical machine 100 has a sufficient vertical field of view, the size of the display screen 110 can be further reduced, thereby improving the effective utilization rate of the display screen 110, reducing the overall weight of the display device 10, and improving the user experience.

[0059] In other embodiments, the minimum distance between the fourth contour 124 and the principal optical axis O of the optical element 120 is less than the minimum distance between the second contour 122 and the principal optical axis O of the optical element 120. That is, the upper side of the optical element 120 is profiled to form the fourth contour 124 (as shown in FIG. 4 and FIG. 5 , where the profiled fourth contour 124 is located within the dotted circle a). This allows the optical engine 100 to further reduce the size of the optical element 120 while maintaining a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.

[0060] Correspondingly, the fourth side surface 114 of the display screen 110, that is, the upper side of the display screen 110, can also be cut (as shown in Figures 4 and 5, the fourth side surface 114 after special-shaped cutting is at least partially located within the dotted circle b) to reduce the width of the upper and lower sides of the display screen 110, so that when the optical machine 100 has a sufficient vertical field of view, the size of the display screen 110 can be further reduced, thereby improving the effective utilization rate of the display screen 110, reducing the overall weight of the display device 10, and improving the user experience.

[0061] In some further embodiments, the minimum distance between the third contour 123 and the principal optical axis O of the optical element 120 is smaller than the minimum distance between the second contour 122 and the principal optical axis O of the optical element 120. Simultaneously, the minimum distance between the fourth contour 124 and the principal optical axis O of the optical element 120 is smaller than the minimum distance between the second contour 122 and the principal optical axis O of the optical element 120. In other words, the upper and lower sides of the optical element 120 are both profiled, allowing the optical engine 100 to further reduce its size while maintaining a sufficient vertical field of view, thereby reducing the overall weight of the display device 10 and improving the user experience.

[0062] In addition, the optical machine 100 has a lens barrel, and the display screen 110 and the optical element 120 are both installed in the lens barrel. When at least one of the third contour 123 and the fourth contour 124 of the optical element 120, and the first contour 121 are cut into a special shape, and at the same time, at least one of the third side surface 113 and the fourth side surface 114 of the display screen 110, and the first side surface 111 are cut into a special shape, the size of the lens barrel used to install the display screen 110 and the optical element 120 can also be reduced, thereby reducing the size of the entire optical machine 100, so that a smaller size of the optical machine 100 can be used under the same horizontal field of view angle, that is, a larger horizontal field of view angle can be obtained under the same size of the optical machine 100, thereby improving the user's immersive experience.

[0063] It should be noted that the size relationship between the distance between the third contour 123 and the main optical axis O of the optical element 120 and the distance between the fourth contour 124 and the main optical axis O of the optical element 120, that is, the specific shapes of the third contour 123 and the fourth contour 124 can be designed and adjusted according to the actual requirements of the vertical field of view angle of the optical machine 100, as long as it ensures that the user has a good immersive experience, and no special restrictions are made here.

[0064] Optionally, as shown in FIG5 , a second notch 116 is formed at the junction of the fourth side surface 114 and the first side surface 111, that is, a second notch 116 is formed in the upper right corner corresponding to the human eye (left eye) observation area, and this area corresponds to the human eye (left eye) observation area and is located on the inner side of the area near the nose. Correspondingly, the position of the optical element 120 corresponding to the second notch 116 can also be further shaped. By forming the second notch 116 in the upper right corner of the display screen 110 and the optical element 120, it will not affect the overall horizontal and vertical field of view angles of the optical machine 100, and can further reduce the size of the display screen 110 and the optical element 120, thereby improving the effective utilization rate of the display screen 110 and reducing the overall weight of the display device 10.

[0065] In some embodiments, as shown in FIG3 , a third notch 117 is formed at the junction of the fourth side surface 114 and the second side surface 112. Specifically, third notch 117 is formed at the lower left corner corresponding to the viewing area of ​​the human eye (left eye). Since this area corresponds to the outside of the viewing area of ​​the human eye (left eye), to avoid affecting the overall horizontal viewing angle, the third notch 117 remains outside the dashed circle b after the contour cutting. Accordingly, the position of the optical element 120 corresponding to the third notch 117 can also be further contour cut to further reduce the size of the display screen 110 and the optical element 120, thereby increasing the effective utilization of the display screen 110 and reducing the overall weight of the display device 10.

[0066] In other embodiments, as shown in FIG3 , a fourth notch 118 is formed at the junction of the third side surface 113 and the second side surface 112. Specifically, fourth notch 118 is formed at the upper left corner corresponding to the viewing area of ​​the human eye (left eye). Since this area corresponds to the outside of the viewing area of ​​the human eye (left eye), to avoid affecting the overall horizontal viewing angle, the fourth notch 118 remains outside the dashed circle b after the special-shaped cutting. Accordingly, the position of the optical element 120 corresponding to the fourth notch 118 can also be further special-shaped cut to further reduce the size of the display screen 110 and the optical element 120, thereby improving the effective utilization of the display screen 110 and reducing the overall weight of the display device 10.

[0067] In some further embodiments, notches are formed at two or three of the junctions between the fourth side surface 114 and the first side surface 111, the junction between the fourth side surface 114 and the second side surface 112, and the junction between the third side surface 113 and the second side surface 112. That is, notches are formed at two or three of the upper right corner, lower left corner, and upper left corner of the display screen 110. When notches are formed at the lower right corner, upper right corner, lower left corner, and upper left corner of the display screen 110, the cross-section of the display side of the display screen 110 can be a regular octagon as a whole.

[0068] It should be noted that the position and specific shape of the notch on the display screen 110 can be designed and adjusted accordingly according to the overall field of view requirements of the optical machine 100. It is only necessary to ensure the user's immersive experience while reducing the size of the display screen 110 and the corresponding optical element 120. There is no special restriction here.

[0069] Optionally, as shown in FIG2 , the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 can be arc-shaped, and the curvatures of the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 can be different. Specifically, the first contour 121, the third contour 123, and the fourth contour 124 can be profiled using the orthographic projections of the corresponding first side surface 111, the third side surface 113, and the fourth side surface 114 on the optical element 120 as chords, thereby reducing the size of the optical element 120 while ensuring the effective utilization of the display screen 110. Furthermore, the arc-shaped first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 can also reduce stress concentration generated during the profile cutting process, thereby ensuring the optical and structural stability of the optical element 120.

[0070] It should be noted that the curvatures of the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 can be designed according to the design requirements of the horizontal viewing angle and the vertical viewing angle and the shape of the display screen 110 after the special-shaped cutting. It is only necessary to ensure that the arc design of the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 can meet the viewing angle requirements.

[0071] In some embodiments, as shown in FIG3 , the first contour 121, the third contour 123, and the fourth contour 124 are straight lines, the second contour 122 is arc-shaped, and the center of curvature of the second contour 122 is located on the principal optical axis O of the optical element 120. That is, the center of the arc-shaped projection of the second contour 122 in the direction of the principal optical axis O is located on the principal optical axis O, and the projections of the first contour 121, the third contour 123, and the fourth contour 124 in the direction of the principal optical axis O are straight lines corresponding to the first side surface 111, the third side surface 113, and the fourth side surface 114. This special-shaped cutting method can further reduce the size of the optical element 120, thereby reducing the overall weight of the display device 10.

[0072] Among them, the first contour 121 and the third contour 123 are connected by an arc 125, and the first contour 121 and the fourth contour 124 are connected by an arc 125, that is, the first contour 121 and the third contour 123 are smoothly transitioned by the arc 125, and the first contour 121 and the fourth contour 124 are smoothly transitioned by the arc 125, so as to avoid stress concentration at the connection between the first contour 121 and the third contour 123, and at the connection between the first contour 121 and the fourth contour 124 during the special-shaped cutting process, thereby ensuring the optical stability and structural stability of the optical element 120.

[0073] It should be noted that the specific shapes of the first contour 121, the second contour 122, the third contour 123 and the fourth contour 124 can be designed and adjusted according to the shape of the display screen 110 and the field of view angle requirements of the optical machine 100, and there is no special limitation here.

[0074] Optionally, along the direction of the principal optical axis O of the optical element 120, the orthographic projection of the display screen 110 on the optical element 120 is located within the optical element 120. That is, the area enclosed by the first contour 121, the second contour 122, the third contour 123, and the fourth contour 124 of the optical element 120 surrounds the projection of the display screen 110 on the optical element 120. This structural design helps maximize the utilization of the display screen 110 under the same field of view angle.

[0075] In some embodiments, the minimum distance between the fourth contour 124 and the principal optical axis O of the optical element 120 is smaller than the minimum distance between the third contour 123 and the principal optical axis O of the optical element 120. According to the visual characteristics of the human eye, during actual observation, the visual angle of the upper side (corresponding to the fourth contour 124) of the human eye is smaller than the visual angle of the lower side (corresponding to the third contour 123). By setting the minimum distance between the fourth contour 124 and the principal optical axis O of the optical element 120 to be smaller than the minimum distance between the third contour 123 and the principal optical axis O of the optical element 120, the size of the optical element 120 can be further reduced while ensuring a sufficient vertical field of view, thereby reducing the overall weight of the display device 10.

[0076] Optionally, the optical element 120 has an optical center Q, the main optical axis O of the optical element 120 passes through the optical center Q, the optical centers Q of the optical elements 120 of the two optical machines 100 form a first line L, and the geometric centers P of the display screens 110 of the two optical machines 100 form a second line N. The first line L is parallel to the second line N, that is, the special-shaped cutting method of the two optical machines 100 is the same and they are symmetrically arranged.

[0077] Among them, the main optical axis O of the optical element 120 passes through the second connecting line N, that is, the main optical axes O of the two optical elements 120 and the second connecting line N are located in the same plane, and the upper and lower sides of the display screen 110 are not cut into special shapes or are cut into symmetrical special shapes, that is, the third contour 123 and the fourth contour 124 are symmetrically arranged. This arrangement can simplify the special-shaped cutting method of the display screen 110 and also help improve the aesthetics of the display screen 110.

[0078] Alternatively, the principal optical axis O of the optical element 120 forms an angle with the second connecting line N and does not intersect, that is, the second connecting line N is parallel to the plane where the principal optical axes O of the two optical elements 120 are located, and only one side of the upper and lower sides of the display screen 110 is cut with a special shape or both sides are cut with asymmetric special shapes, that is, the third contour 123 and the fourth contour 124 are set asymmetrically. This setting method allows the third contour 123 and the fourth contour 124 to be optimized according to the visual characteristics of the human body, so as to maximize the utilization of the display screen 110 and the optical element 120 while meeting the viewing angle design requirements.

[0079] In some embodiments, the sum of the field of view angles of the observation points S corresponding to the two optical engines 100 along the first direction X is greater than or equal to 120°. That is, after the display image of a single display screen 110 is magnified by the corresponding optical element 120, the angle between the outer edge of the enlarged image 130 formed and the observation point S, relative to the principal optical axis O of the optical element 120, is greater than or equal to 60°. Similarly, after the display images of two display screens 110 are magnified by the corresponding optical element 120, the sum of the angles between the outer edge of the enlarged image 130 formed and the observation point S, relative to the principal optical axis O of the optical element 120, is greater than or equal to 120°, thereby providing a better immersive user experience.

[0080] Specifically, in the actual production process, the sum of the field of view angles of the observation points S corresponding to the two optical machines 100 in the observation direction along the first direction X can be set to α=120°, 125° or 130°, etc. The specific size of the sum of the field of view angles can be adjusted accordingly according to actual usage requirements, as long as it meets the user's immersive experience needs, and no special restrictions are made here.

[0081] In other embodiments, along the observation direction X, the combined angle of the field of view angles of the two optical engines 100 corresponding to the observation point S is greater than or equal to 80°. That is, after the display image of a single display screen 110 is magnified by the corresponding optical element 120, the angle between the inner edge of the enlarged image 130 formed and the line connecting the observation point S and the principal optical axis O of the optical element 120 is greater than or equal to 40°; and after the display images of the two display screens 110 are magnified by the corresponding optical element 120, the sum of the angles between the inner edge of the enlarged image 130 formed and the line connecting the observation point S and the principal optical axis O of the optical element 120 is greater than or equal to 80°. The size of the combined angle represents the size of the stereoscopic visual area. By setting the combined angle to be greater than or equal to 80°, the user can have a better immersive experience.

[0082] Specifically, in the actual production process, the combined image angle of the field of view corresponding to the observation points S of the two optical machines 100 in the observation direction along the first direction X can be set to β=80°, 90° or 100°, etc. The specific size of the combined image angle can be adjusted accordingly according to actual usage requirements, as long as it meets the user's immersive experience requirements, and no special restrictions are made here.

[0083] In yet other embodiments, the field of view angles of the observation points S corresponding to the two optical engines 100 are greater than or equal to 90° in the observation direction along the second direction Y. That is, after the display image of a single display screen 110 is magnified by the corresponding optical element 120, the angle between the upper or lower edge of the enlarged image 130 formed and the observation point S, relative to the principal optical axis O of the optical element 120, is greater than or equal to 45°; and after the display images of the two display screens 110 are magnified by the corresponding optical element 120, the sum of the angles between the upper or lower edge of the enlarged image 130 formed and the observation point S, relative to the principal optical axis O of the optical element 120, is greater than or equal to 90°, thereby providing users with a better immersive experience.

[0084] Specifically, in the actual production process, the sum of the field of view angles of the observation points S corresponding to the two optical machines 100 in the observation direction along the second direction Y can be set to 90°, 95° or 100°, etc. The specific size of the sum of the field of view angles can be adjusted accordingly according to actual usage requirements, as long as it meets the user's immersive experience needs, and no special restrictions are made here.

[0085] The above is a detailed introduction to a display device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A display device, wherein: The invention comprises two optical machines arranged in parallel along a first direction, each of the optical machines comprising: A display screen having a first side surface and a second side surface arranged opposite to each other along the first direction, wherein the first side surface is close to the other optical machine; an optical element, located at a display side of the display screen, and used for processing a display image of the display screen and transmitting the image to a corresponding observation point; the optical element has a first contour and a second contour arranged opposite to each other along the first direction, and the first contour is close to the other optical machine; The principal optical axis of the optical element passes through the display screen and is located at a side of the geometric center of the display screen close to the other optical machine; the minimum value of the distance between the first contour and the principal optical axis of the optical element is smaller than the minimum value of the distance between the second contour and the principal optical axis of the optical element.

2. The display device according to claim 1, wherein: A minimum value of a distance between the first side surface and the main optical axis of the optical element is smaller than a minimum value of a distance between the second side surface and the main optical axis of the optical element.

3. The display device according to claim 1, wherein: The display screen has a third side surface and a fourth side surface opposite to each other along a second direction, the third side surface is connected between the first side surface and the second side surface, the fourth side surface is connected between the first side surface and the second side surface, and the second direction forms an angle with the first direction; a first notch is formed at the connection between the third side surface and the first side surface.

4. The display device according to claim 3, wherein: The optical element has a third profile and a fourth profile that are arranged opposite to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; the minimum value of the distance between the third profile and the main optical axis of the optical element is smaller than the minimum value of the distance between the second profile and the main optical axis of the optical element.

5. The display device according to claim 3, wherein: The optical element has a third profile and a fourth profile that are arranged opposite to each other along the second direction; the third profile is connected between the first profile and the second profile, and the fourth profile is connected between the first profile and the second profile; and the minimum value of the distance between the fourth profile and the main optical axis of the optical element is smaller than the minimum value of the distance between the second profile and the main optical axis of the optical element.

6. The display device according to claim 3, wherein: A second notch is formed at a connection between the fourth side surface and the first side surface.

7. The display device according to claim 3, wherein: A third notch is formed at a connection between the fourth side surface and the second side surface.

8. The display device according to claim 3, wherein: A fourth notch is formed at a connection between the third side surface and the second side surface.

9. The display device according to claim 3, wherein: The connecting surface formed by the first notch is at an angle of 145 degrees to the first side surface.

10. The display device according to claim 3, wherein: The connecting surface formed by the first notch is at an angle of 145° to the third side surface.

11. The display device according to claim 3, wherein: The cross section of the display screen is a regular octagon.

12. The display device according to claim 4, wherein: The first contour, the second contour, the third contour and the fourth contour are arc-shaped, and the curvatures of the first contour, the second contour, the third contour and the fourth contour are different.

13. The display device according to claim 4, wherein: The first contour, the third contour and the fourth contour are straight lines, the second contour is an arc, and the center of curvature of the second contour is located on the main optical axis of the optical element; the first contour and the third contour are connected by an arc, and the first contour and the fourth contour are connected by an arc.

14. The display device according to claim 1, wherein: In the direction along the principal optical axis of the optical element, an orthographic projection of the display screen on the optical element is located within the optical element.

15. The display device according to claim 4, wherein: A minimum value of a distance between the fourth contour and the main optical axis of the optical element is smaller than a minimum value of a distance between the third contour and the main optical axis of the optical element.

16. The display device according to claim 1, wherein: The optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element passes through the second line.

17. The display device according to claim 1, wherein: The optical element has an optical center, and the main optical axis of the optical element passes through the optical center; the optical centers of the optical elements of the two optical machines form a first line, and the geometric centers of the display screens of the two optical machines form a second line, and the first line is parallel to the second line; the main optical axis of the optical element forms an angle with the second line and does not intersect.

18. The display device according to claim 1, wherein: In the observation direction along the first direction, the sum of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 120°.

19. The display device according to claim 1, wherein: In the observation direction along the first direction, the combined angle of the field of view angles of the observation points corresponding to the two optical machines is greater than or equal to 80°.

20. The display device according to claim 1, wherein: In the observation direction along the second direction, the field of view angles of the observation points corresponding to the two optical machines are greater than or equal to 90°.

Images