Optical displays, seats and vehicles

Abstract

An optical display (10), a seat, and a means for transportation are provided. The optical display (10) includes a housing (1), a light source unit (3), and a curved mirror (7). The light source unit (3) is fixed to the housing (1) and configured to emit imaging light. The curved mirror (7) includes a mirror body (72) and a connecting portion (74) protruding from the mirror body (72). The mirror body (72) is configured to reflect the imaging light to the outside of the housing (1), and the connecting portion (74) is pressed against and fixedly connected to the first positioning surface (162). The curved mirror (7) is directly fixed to the first positioning surface (162) of the housing (1) by using the connecting portion (74) without using an adapter such as a frame. This reduces the number of elements of the optical display (10), improves the assembly precision of the optical display (10), and simplifies the structure of the optical display (10), which helps to improve the precision of the optical path system of the optical display (10) and improve the output quality of the imaging light of the optical display (10).

Description

[Technical field]

[0001] This application relates to the field of optical display technology, and more particularly to optical displays, seating and vehicles. [Background technology]

[0002] An optical display is a device for obtaining a large-screen visual experience in a small space by using the principle of optical imaging, and can be widely used in projectors, head-up displays (HUDs), in-vehicle displays, vehicle lights, etc. The curved mirror of the optical display is configured to project the imaging light emitted from the light source unit to the outside of the optical display.

[0003] In commonly used optical displays, the curved mirror is first attached to a frame body, and then fixed to a housing by using the frame body, in which case the optical display has a complicated structure which requires more assembly processes. Summary of the Invention

[0004] The embodiments of the present application provide an optical display, sheet and conveying means that can be simplified in structure.

[0005] According to a first aspect, the present application provides an optical display including a housing, a light source unit, and a curved mirror. The housing includes a first positioning surface. The light source unit is fixed to the housing and configured to emit imaging light. The curved mirror includes a mirror body and a connection portion protruding from the mirror body. The mirror body is configured to reflect the imaging light to the outside of the housing, and the connection portion is fixedly connected to the first positioning surface.

[0006] The fixing method of the curved mirror of the conventional optical display is as follows: the curved mirror is first fixed to a frame, and then the frame is fixed to a housing by using a fixing member. In this case, the optical display has a complicated structure, which requires more assembly steps and occupies more space. This is not conducive to the development towards a high screen-to-body ratio. There is an assembly tolerance between elements. The larger the number of elements in the optical display, the lower the assembly precision. The assembly precision affects the precision of the optical path system of the optical display.

[0007] In the present application, the curved mirror is directly fixed to the first positioning surface of the housing by using a connecting part without using an adapter such as a frame, thereby reducing the number of elements of the optical display, simplifying the structure of the optical display, reducing the space occupied by the optical display, and reducing the assembly steps of the optical display, thereby improving the assembly precision of the optical display, improving the precision of the optical path system of the optical display, and improving the output quality of the imaging light of the optical display.

[0008] The first alignment surface may position the curved mirror normal to the first alignment surface to facilitate assembly of the housing and the curved mirror.

[0009] The connecting portion may also be referred to as a "mounting ear." The connecting portion and the first positioning surface may be attached to one another, pressed against one another, or in contact with one another. The connecting portion and the first positioning surface may be secured by adhesive, fasteners, or the like.

[0010] According to the first aspect, in a possible implementation, the connection portion comprises a groove. The housing further includes a locating post protruding from the first locating surface, the locating post passing through the groove.

[0011] In the assembly process of the curved mirror and the housing, the positioning post can position the connection portion, thereby facilitating the assembly of the curved mirror and the housing, and improving the assembly accuracy and assembly efficiency of the optical display.

[0012] According to the first aspect, in a possible implementation, there is a guaranteed gap between the inner wall of the groove and the positioning post.

[0013] Due to differences in manufacturing materials, the thermal expansion coefficient of the curved mirror is usually different from that of other mating parts of the optical display. Therefore, when the ambient temperature changes significantly, the curved mirror is easily deformed due to the pressure of other mating parts. For example, the curved mirror is used in a vehicle. When the internal temperature of the vehicle (i.e., the ambient temperature where the optical display is located) is higher than a preset temperature (e.g., 70 degrees Celsius), the curved mirror and the housing may deform due to thermal expansion, and the housing may press the curved mirror. When the curved mirror is deformed, the optical path of the imaging light reflected by the deformed part is distorted, and as a result, the output quality of the imaging light of the optical display is affected.

[0014] In this application, due to the thermal expansion rate of the material caused by the change of the ambient temperature, there is a gap reserved between the inner wall of the groove and the positioning post to provide space for the thermal expansion of the curved mirror and the housing, which reduces the possibility of the curved mirror being deformed by compression and improves the optical path stability of the optical display.

[0015] According to the first aspect, in a possible implementation, the housing further includes a positioning portion disposed on the housing, the first positioning surface being disposed on an inner wall of the positioning portion, and the connection portion being accommodated within the positioning portion.

[0016] Since the connecting portion is accommodated in the positioning portion, when the positioning portion positions the connecting portion, the rotation of the curved mirror with respect to the housing can be limited, thereby improving the positional stability of the curved mirror with respect to the housing and further improving the display quality of the optical display.

[0017] According to the first aspect, in a possible implementation, the inner wall of the positioning portion further includes a side surface connected to the first positioning surface, with a secured gap being present between the side surface and the end of the connection portion.

[0018] In this application, due to the thermal expansion rate of the material caused by the change of the ambient temperature, there is a gap between the side surface and the connection portion reserved to provide space for the thermal expansion of the curved mirror and the housing, which reduces the possibility of the curved mirror being deformed by compression and improves the optical path stability of the optical display.

[0019] According to the first aspect, in a possible implementation, there are a plurality of connecting parts, and the mirror body includes a first end, a second end, a third end and a fourth end, the first end and the second end being arranged oppositely in a first direction, and the third end and the fourth end being arranged oppositely in a second direction, the first direction being different from the second direction, and each of the first end, the second end and the third end is provided with a connecting part, and a groove provided for the connecting part penetrates the connecting part in a third direction, the third direction being different from the first direction, and the third direction being different from the second direction.

[0020] By disposing the connection parts at the three ends of the mirror body, the curved mirror is positioned in three directions and the rotation of the curved mirror about the three directions is limited, thereby further improving the positional stability of the curved mirror relative to the housing.

[0021] According to the first aspect, in a possible implementation, the housing includes a positioning slot, and the curved mirror includes a mirror body and a positioning protrusion protruding from an end of the mirror body, the positioning protrusion being accommodated in the positioning slot. The positioning slot positions the positioning protrusion, so that the assembly accuracy between the curved mirror and the housing is further improved.

[0022] According to the first aspect, in a possible implementation, the optical display further includes a connection part. The connection part includes a pressing sheet and a first fixing member. The curved mirror is located between the pressing sheet and the housing. The first fixing member passes through the pressing sheet and the positioning post, and the pressing sheet presses the curved mirror to the housing.

[0023] The curved mirror is pressed against the housing by using a pressing sheet, i.e., the position of the curved mirror is limited between the housing and the pressing sheet, which improves the positional stability of the curved mirror on the housing, reduces the possibility of the curved mirror being damaged by a large local force, and extends the life of the curved mirror, thus helping to improve the usage reliability of the optical display.

[0024] According to the first aspect, in a possible implementation, the housing further includes a connection post protruding from the first positioning surface, and the connection piece further includes a second fixing member, the second fixing member fixedly connected to the connection post.

[0025] Both the first fixing member and the second fixing member pass through the pressing sheet and are fixedly connected to the housing to press and fix the curved mirror to the housing, thereby improving the connection strength and connection stability between the curved mirror and the housing.

[0026] According to the first aspect, in a possible implementation, the connection part further comprises a flexible buffer, which is located between the pressing sheet and the connection part.

[0027] Since the flexible buffer is located between the pressing sheet and the connection part, the flexible buffer can reduce the possibility that the connection part is damaged by the pressing of the pressing sheet. In addition, the flexible buffer can absorb vibrations, thereby improving the quality of the imaging light output by the optical display.

[0028] According to the first aspect, in a possible implementation, the housing includes an assembly opening communicating with an interior cavity of the housing. The curved mirror is disposed within the assembly opening. The optical display further includes a cover fixedly connected to the housing and covering the assembly opening.

[0029] The assembly opening is provided to facilitate mounting or removing the curved mirror from the housing, i.e., to facilitate assembly and disassembly of the curved mirror and the housing. Placing a cover seals the assembly opening and helps reduce dust entering the housing.

[0030] According to the first aspect, in a possible implementation, the housing comprises a mounting opening communicating with an internal cavity of the housing. The optical display further includes a transmission reflection type optical element. The transmission reflection type optical element is fixed to the housing and covers the mounting opening. The transmission reflection type optical element is configured to reflect the imaging light emitted by the light source unit to the curved mirror. The transmission reflection type optical element changes the transmission path of the imaging light emitted by the light source unit, which promotes flexible arrangement of the optical path in the housing according to requirements, and improves the degree of freedom of layout of the optical display.

[0031] According to a second aspect, there is provided a sheet including an optical display as described above, the optical display being mounted on the sheet.

[0032] According to a third aspect, there is provided a seat for a vehicle including an optical display as described above, the optical display being mounted on the vehicle.

[0033] According to the third aspect, in a possible application scenario, the optical display may be integrated into a head-up display, which may project navigation information, instrument information, etc., into the driver's forward field of vision. In this way, the driver does not need to switch his / her gaze between the image and the road surface when looking down to see the information. This reduces crisis response time and improves driving safety.

[0034] In a possible application scenario, the optical display may be integrated into an in-vehicle display, which may be installed at the back of the seat, in the passenger seat, etc. A user may use the optical display to watch videos, etc., thus improving the entertainment function of the vehicle.

[0035] In a possible application scenario, the optical display may be integrated into a vehicle light. [Brief description of the drawings]

[0036] [Figure 1] FIG. 1 is a diagram of an application scenario of a vehicle according to one implementation of the present application. [Figure 2a] FIG. 2a is a cross-sectional view of an optical display according to one embodiment of the present application. [Figure 2b] FIG. 2b is a three-dimensional exploded view of the optical display shown in FIG. 2a. [Diagram 3] FIG. 3 is a diagram of the virtual image formation principle of an optical display according to one implementation of the present application. [Figure 4] FIG. 4 is a three-dimensional view of a housing for an optical display according to one embodiment of the present application. [Diagram 5] FIG. 5 is a cross-sectional view of a housing of an optical display according to one embodiment of the present application. [Figure 6] FIG. 6 is a localized enlarged view of region A in FIG. 2a. [Figure 7] FIG. 7 is a localized enlarged view of region B in FIG. 2a. [Figure 8a] FIG. 8a is a diagram of an optical display housing according to one implementation of the present application. [Figure 8b] FIG. 8b is a three-dimensional view of the housing of an optical display according to one embodiment of the present application from another angle. [Figure 9] FIG. 9 is a top view of a housing and light source unit assembled together according to one implementation of the present application. [Figure 10a] FIG. 10a is a diagram of the distribution of fastening posts and locating posts on a mounting surface according to one implementation of the present application. [Figure 10b]FIG. 10b is a three-dimensional view of a housing according to an embodiment of the present application from another angle. [Figure 11] FIG. 11 is a three-dimensional exploded view of a housing and curved mirror according to one embodiment of the present application. [Figure 12] FIG. 12 is a plan view of a curved mirror according to one embodiment of the present application. [Figure 13] FIG. 13 is a diagram of a housing and a curved mirror assembled together according to one implementation of the present application. [Figure 14] FIG. 14 is a local enlarged view of region C in FIG. [Figure 15a] FIG. 15a is a plan view of a possible structure of a curved mirror according to one implementation of the present application. [Figure 15b] FIG. 15b is a plan view of a possible configuration of a curved mirror according to one implementation of the present application. [Figure 15c] FIG. 15c is a plan view of a possible structure of a curved mirror according to one implementation of the present application. [Figure 15d] FIG. 15d is a plan view of a possible structure of a curved mirror according to one implementation of the present application. [Figure 16] FIG. 16 is a diagram of a three-dimensional assembly of a housing and a curved mirror according to one embodiment of the present application from another angle. [Figure 17] FIG. 17 is another cross-sectional view of an optical display according to one embodiment of the present application. [Figure 18a] FIG. 18a is a diagram of a partial structure of a vehicle according to an embodiment of the present invention. [Figure 18b] FIG. 18b is a diagram of a possible implementation of integrating an optical display into a head-up display. [Figure 19] FIG. 19 is a functional diagram of a vehicle according to one implementation of the present application. [Figure 20] FIG. 20 is a diagram of a possible application scenario of an optical display according to one implementation of the present application. [Figure 21] FIG. 21 is a diagram of another possible application scenario of an optical display according to one embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] Referring to FIG. 1, one embodiment of the present application provides a vehicle 1000. The vehicle 1000 in the embodiment of the present application can be a known vehicle, such as a car, an airplane, a boat, or a rocket, or a vehicle that will emerge in the future. The vehicle can be an electric vehicle, a fuel vehicle, or a hybrid powered vehicle, such as a pure electric vehicle, a long-distance electric vehicle, a hybrid electric vehicle, a fuel cell vehicle, or a new energy vehicle, which is not specifically limited in the present application.

[0038] The vehicle 1000 includes a cockpit 200 and seats installed in the cockpit 200. The seats include a first seat 300 and a second seat 500, and are used for passengers to sit in. In this embodiment, the first seat 300 is a front seat disposed in the cockpit 200. The second seat 500 is a rear seat disposed behind the first seat 300, and is used for passengers to sit in. In another embodiment of the present application, the first seat 300 does not have to be a front seat.

[0039] The first seat 300 includes a seat body 301 and an optical display 10 installed on the seat body 301. In this application, a passenger who views the optical display 10 on the second seat 500 is referred to as a viewer. It should be understood that the optical display 10 may alternatively be installed in the passenger seat of the vehicle 1000 (as shown in FIG. 1 ), i.e., in an Instrument Panel (IP) console of the vehicle.

[0040] Referring to FIG. 2a, implementations of the present application provide an optical display 10 configured to output imaging light carrying image information.

[0041] 2a and 2b, an optical display 10 includes a housing 1, a light source unit 3, a transflective optical element 5, a curved mirror 7, a connecting part 8 and a cover 9. As shown in FIG.

[0042] The light source unit 3 is fixed to the housing 1 and configured to emit imaging light. The transmission / reflection type optical element 5 is fixed to the housing 1 and configured to transmit and reflect the imaging light. The curved mirror 7 is fixed to the housing 1 using a connecting part 8 and configured to reflect the imaging light. The cover 9 is fixed to the housing 1 and configured to cover the curved mirror 7, protect the curved mirror 7, and reduce the intrusion of dust into the housing 1.

[0043] The imaging light emitted by the light source unit 3 is reflected by the curved mirror 7 via the transmission reflection type optical element 5, and the imaging light reflected by the curved mirror 7 is transmitted to the outside of the housing 1 via the transmission reflection type optical element 5. The light source unit 3 may be referred to as an image source. The transmission reflection type optical element 5 may reflect the imaging light emitted by the light source unit 3 to the curved mirror 7 and transmit the imaging light reflected by the curved mirror 7.

[0044] In a conventional optical display, optical elements such as a light source and a curved mirror are first fastened to respective fastening frames and then assembled into a housing. In this case, the number of elements in the optical display is large. Due to the assembly tolerance between elements, the larger the number of elements, the more difficult it is to assemble the system / apparatus, and the lower the assembly accuracy.

[0045] However, in the present application, the light source unit 3, the transmission / reflection type optical element 5, and the curved mirror 7 are each directly fastened to the same housing 1 without using a separate adapter (for example, each fastening frame), thereby reducing the number of elements of the optical display 10, reducing the difficulty of assembling the optical display 10, improving the assembly accuracy of the optical display 10, and simplifying the structure of the optical display 10. This helps to improve the accuracy of the optical path system of the optical display 10 and the output quality of the imaging light of the optical display 10.

[0046] Referring to FIG. 3, in some implementations of the present application, the curved mirror 7 transmits the imaging light to the outside of the housing 1 via the transflective optical element 5, and the imaging light enters the eye 80, so that the eye 80 can see a magnified virtual image. This virtual image can be seen by the eye without being received by a light screen. As shown in FIG. 3, the light source unit 3 emits imaging light L having a specific divergence angle. The imaging light L enters the eye 80 after being reflected by the transflective optical element 5 and the curved mirror 7. In this case, the brain traces the light backward based on the experience of "linear propagation of light", and regards the point where the imaging light L extending backward intersects as an object point, i.e., a virtual image point. The position of the eye 80 may be called an eyebox position.

[0047] In another implementation of the present application, the curved mirror 7 may project the imaging light onto a light screen (not shown) located outside the housing 1 after the imaging light passes through the transflective optical element 5. The light screen may be a wall, a projection screen, a wooden board, etc. The particular form of the light screen is not limited by the present application.

[0048] In some embodiments of the present application, the housing 1 is an integrally formed housing. In other embodiments of the present application, the housing 1 may be formed by assembling two or more parts.

[0049] 4 and 5, the housing 1 includes a main housing 11 and a mounting portion 13.

[0050] The main housing 11 includes a first portion 1101 (which may be considered as the upper portion of the housing 1) and a second portion 1103 (which may be considered as the lower portion of the housing 1) that are connected together. The cavity surrounded by the first portion 1101 and the second portion 1103 includes a mounting opening 103 and an assembly opening 105 (both of which may be referred to as two openings, front and rear, as shown in FIG. 5 ). The mounting opening 103 communicates with the internal cavity of the main housing 11, and the assembly opening 105 communicates with the internal cavity of the main housing 11. The mounting opening 103 is configured to pass imaging light. The assembly opening 105 is configured to assemble the curved mirror 7. The light source unit 3 is fixedly accommodated in the first portion 1101. The transflective optical element 5 and the curved mirror 7 are located on the second portion 1103.

[0051] Since the light source unit 3 is installed and housed in the first portion 1101, and the transmission reflection type optical element 5 and the curved mirror 7 are located on the second portion 1103, when a user is looking at the optical display 10, it is difficult to visually recognize the light source unit 3 located in the first portion 1101 by using the transmission reflection type optical element 5. That is, the light source unit 3 is hidden in the first portion 1101. Since stray light of the light source unit 3 does not directly reach the human eye through the transmission reflection type optical element 5, the user experience is improved and the imaging quality of the optical display 10 is also improved.

[0052] In some implementations of the present application, the first portion 1101 includes a first side wall 111 and a second side wall 112 that are bent and connected together. The first side wall 111 has an installation surface 1113 that is arranged facing the internal cavity of the main housing 11 and is configured to be connected to the light source unit 3 (to install the light source unit 3 thereon).

[0053] In some implementations of the present application, the second portion 1103 includes a third sidewall 113, a fourth sidewall 114, and a fifth sidewall 115. The third sidewall 113 is fixedly connected between the fourth sidewall 114 and the fifth sidewall 115.

[0054] A positioning groove 106 is formed on the inner wall of the third side wall 113 facing the internal cavity of the main housing 11 and configured to position the curved mirror 7 .

[0055] The fourth side wall 114 and the fifth side wall 115 are disposed opposite to each other. The first side wall 111 is located between the fourth side wall 114 and the fifth side wall 115. The second side wall 112 is located between the fourth side wall 114 and the fifth side wall 115. The third side wall 113 is located between the fourth side wall 114 and the fifth side wall 115. The first side wall 111, the second side wall 112, the third side wall 113, the fourth side wall 114 and the fifth side wall 115 together form an internal cavity of the main housing 11. The second side wall 112, the third side wall 113, the fourth side wall 114 and the fifth side wall 115 together form the mounting opening 103. The first sidewall 111 , the third sidewall 113 , the fourth sidewall 114 and the fifth sidewall 115 together form the assembly opening 105 .

[0056] 6, the mounting portion 13 protrudes from the outer surface of the main housing 11 and is configured to fix the transmission reflection type optical element 5. Since the internal optical path of the optical display 10 is located inside the main housing 11 and the mounting portion 13 for fixing the transmission reflection type optical element 5 is disposed outside the main housing 11, the mounting portion 13 does not affect the internal optical path of the optical display 10. In other words, since the mounting portion 13 does not affect the transmission of the imaging light inside the main housing 11, the generation of reflected stray light of the optical display 10 is reduced and the output quality of the imaging light of the optical display 10 is improved.

[0057] The mounting portion 13 includes a mounting bottom wall 132 and a protective flange 134. The mounting bottom wall 132 protrudes from the outside of the main housing 11, and the mounting bottom wall 132 is provided with a mounting surface 1320 and configured to be fixedly connected to the transmission-reflection type optical element 5. In this embodiment, the mounting bottom wall 132 protrudes from the second side wall 112, the third side wall 113, the fourth side wall 114 and the fifth side wall 115, and the mounting bottom wall 132 is disposed along the peripheral contour of the mounting opening 103. The mounting surface 1320 is disposed obliquely with respect to the mounting surface 1113 (as shown in FIG. 5 ).

[0058] The transmission reflection type optical element 5 is fixedly connected to the mounting surface 1320 of the mounting bottom wall 132. The transmission reflection type optical element 5 is arranged parallel to the mounting surface 1320. The mounting surface 1320 is arranged parallel to the transmission reflection type optical element 5, and the position of the mounting surface 1320 corresponds to the position of the transmission reflection type optical element 5 in the optical path of the optical display 10. In the process of assembling the transmission reflection type optical element 5 and the housing 1, the mounting surface 1320 can position the transmission reflection type optical element 5 in the normal direction of the mounting surface 1320, so that the positioning accuracy of the transmission reflection type optical element 5 by using the housing 1 is improved, and the output quality of the imaging light in the optical display 10 is improved.

[0059] In some implementations of the present application, the transflective optical element 5 is adhered to the bottom mounting wall 132 by using an adhesive. The adhesive can be a double-sided adhesive or any adhesive method can be adopted.

[0060] In another implementation of the present application, the transflective optical element 5 and the mounting surface 1320 may alternatively be arranged non-parallel.

[0061] In another implementation of the present application, the mounting surface 1320 may be disposed on an inner wall of the housing 1 and the transflective optical element 5 may alternatively be located inside the housing 1 .

[0062] The protective flange 134 protrudes from the mounting bottom wall 132 and is disposed along the periphery of the mounting bottom wall 132 to protect the end of the transmission reflection type optical element 5. In another embodiment of the present application, the protective flange 134 is disposed around the transmission reflection type optical element 5 so as to surround the transmission reflection type optical element 5. In another embodiment of the present application, the protective flange 134 protrudes from a portion of the periphery of the mounting bottom wall 132 and protects the end of the transmission reflection type optical element 5 in segments or regions. That is, the protective flange 134 protects at least a portion of the end of the transmission reflection type optical element 5.

[0063] The protective flange 134 surrounds at least a portion of the end of the transmission reflection type optical element 5 to protect the transmission reflection type optical element 5, reducing the possibility of scratches or damage to the transmission reflection type optical element 5, and further extending the life of the transmission reflection type optical element 5. In addition, because the protective flange 134 surrounds at least a portion of the end of the transmission reflection type optical element 5, the possibility of a user being scraped or cut by the end of the transmission reflection type optical element 5 is reduced, improving the safety and reliability of the optical display 10.

[0064] In alternative implementations of the present application, the mounting portion 13 may be omitted and the transmission-reflection type optical element 5 may be fixed directly to the main housing 11 or the transmission-reflection type optical element 5 may alternatively be housed within the main housing 11 .

[0065] 7, the housing 1 further includes a fixing post 14 and a light source positioning post 15 protruding from the installation surface 1113. The fixing post 14 is fixedly connected to the light source unit 3.

[0066] The light source unit 3 may be arranged parallel to the installation surface 1113. The position of the installation surface 1113 corresponds to the position of the light source unit 3 in the optical path of the optical display 10. In the process of assembling the light source unit 3 and the housing 1, the installation surface 1113 may position the light source unit 3 in the normal direction of the installation surface 1113, so that the positioning accuracy of the light source unit 3 by using the housing 1 is improved, and the output quality of the imaging light of the optical display 10 is improved. In another implementation of the present application, the light source unit 3 and the installation surface 1113 may alternatively be arranged non-parallel.

[0067] The light source positioning post 15 is configured to position the light source unit 3 .

[0068] 8a and 8b, the housing 1 further includes a positioning portion 16 disposed on an inner wall of the main housing 11 for positioning the curved mirror 7. As shown in FIG.

[0069] In some implementations of the present application, there are a plurality of positioning portions 16, and the plurality of positioning portions 16 are disposed on the inner wall of the main housing 11. Each of the first side wall 111, the fourth side wall 114, and the fifth side wall 115 includes a positioning portion 16 facing the inner wall of the internal cavity of the main housing 11. The positioning portions 16 are generally groove-like structures. For example, as shown in FIG. 8b, the positioning portion 16 on the first side wall 111 is a groove-like structure disposed on the first side wall 111 and positioned within the main housing 11, and the positioning portion 16 on the fifth side wall 115 is a groove-like structure recessed within the fifth side wall 115 and positioned within the main housing 11. Each positioning portion 16 includes a first positioning surface 162 and a side surface 164. The first positioning surface 162 is disposed facing the assembly opening 105 and configured to be attached to the curved mirror 7 to improve the assembly accuracy between the curved mirror 7 and the housing 1.

[0070] The structure of the positioning portion 16 is not limited in the present application as long as the positioning portion 16 can position the curved mirror 7. For example, several protruding posts may protrude from the inner wall of the main housing 11. Several protruding posts surround one positioning portion 16, and the positioning portion 16 can limit the position of the curved mirror 7 on the housing 11.

[0071] In some implementations of the present application, the normal direction of the first positioning surface 162 is the same as the normal direction of the assembly opening 105, and the first positioning surfaces 162 of the multiple positioning portions 16 may be located on the same plane. In other implementations of the present application, the first positioning surfaces 162 of the multiple positioning portions 16 may be parallel to each other or may not be parallel to each other. In other implementations of the present application, the normal direction of the first positioning surface 162 may be different from the normal direction of the assembly opening 105.

[0072] The housing 1 further includes an alignment post 18 protruding from the first alignment surface 162 and configured to position the curved mirror 7 .

[0073] The housing 1 further includes a connection post 19 that protrudes from the first positioning surface 162 and is fixedly connected to the curved mirror 7 .

[0074] In alternative implementations of the present application, the housing 1 need not be an integrally formed housing.

[0075] In another embodiment of the present application, the structure of the housing 1 is not limited. For example, the mounting opening 103 and the assembly opening 105 are located on the second part 1103, and the housing 1 can fix the light source unit 3, the transflective optical element 5, and the curved mirror 7, so that the optical display 10 can output imaging light.

[0076] In another implementation of the present application, assembly opening 105 may be omitted and curved mirror 7 is fixedly contained within housing 1 .

[0077] According to the optical display 10 provided in the present application, the light source unit 3, the transmission reflection type optical element 5, and the curved mirror 7 are integrated into the housing 1 as a whole, and the relative positions of the light source unit 3, the transmission reflection type optical element 5, and the curved mirror 7 are determined based on optical principles, thereby ensuring the display effect of the optical display 10.

[0078] In some implementations of the present application, the light source unit 3 uses a liquid crystal display (LCD) imaging technology. LCD imaging uses the principle of the photoelectric effect of liquid crystals. The alignment state of liquid crystal molecules changes under the influence of an external electric field. Liquid crystal molecules in different alignment states can control the transmittance of light. For example, liquid crystal molecules are between two polarizers whose polarization directions are perpendicular to each other. When no electric field is applied, the liquid crystal molecules can rotate the polarization direction of linearly polarized light passing through the first polarizer by 90°. In this case, the light passes through the second polarizer with maximum transmittance. When an electric field is applied, the alignment state of the liquid crystal molecules changes, and the rotation angle of the polarized light also changes, and the intensity of the light passing through the second polarizer decreases. Each pixel of the LCD has three primary colors. A color image is displayed by controlling the intensity of the three primary colors. In the present application, the type of light source of the light source unit 3 is not limited. For example, the light source unit 3 can further use digital light processing (DLP) technology, laser scanning projection, etc.

[0079] 9 , in some implementations of the present application, the light source unit 3 includes a light emitting region 301 and a non-light emitting region 302. The light emitting region 301 is configured to emit imaging light. The non-light emitting region 302 may be a frame of the light source unit 3. In some implementations of the present application, the non-light emitting region 302 is fixedly connected to a fixed post 14.

[0080] The non-light-emitting region 302 is disposed around the light-emitting region 301 and includes a fixing hole 31. The number of the fixing holes 31 corresponds to the number of the fixing posts 14. There are four fixing holes 31, and the four fixing holes 31 are distributed at the four corners of the light source unit 3. Referring to FIG. 10a, there are four fixing posts 14. The fixing posts 14 are studs, and are provided with screw holes into which the screws fit. The screws penetrate the fixing holes 31, and then penetrate the screw holes of the fixing posts 14 to be fixed, so that the light source unit 3 is fixed to the fixing posts 14. In the present application, the shape of the light source unit 3 is not limited. For example, the light source unit 3 may be circular or irregular in shape, and the light source unit 3 may emit imaging light. In another implementation of the present application, the fixing posts 14 may be fixed through the fixing holes 31.

[0081] The non-light emitting area 302 is provided with a positioning hole 33 through which the light source positioning post 15 is disposed to position the light source unit 3 on the housing 1 .

[0082] In some implementations of the present application, the positioning hole 33 includes a first positioning hole 332 and a second positioning hole 334. The light source positioning post 15 includes a first light source positioning post 152 and a second light source positioning post 154. The first light source positioning post 152 penetrates the first positioning hole 332, and the second light source positioning post 154 penetrates the second positioning hole 334. In the arrangement direction of the first positioning hole 332 and the second positioning hole 334, the length of the first positioning hole 332 is greater than the length of the second positioning hole 334. For example, the second positioning hole 334 is a circular hole, and the first positioning hole 332 is a band-shaped hole whose length in the first direction is longer than the diameter of the second positioning hole 334.

[0083] In an ideal state, the shape of the positioning holes 33 is adapted to the shape of the light source positioning posts 15, and the preset interval (designed interval) between the two positioning holes 33 is the same as the preset interval between the two light source positioning posts 15. For example, the positioning holes 33 are circular, and the light source positioning posts 15 are cylindrical. However, in reality, there is inevitably a manufacturing error, so there is an error between the actual interval and the preset interval between the two light source positioning posts 15. In this case, the light source positioning posts 15 of the light source unit 3 may not be attached to the corresponding positioning holes 33.

[0084] In the present application, in the arrangement direction of the first positioning hole 332 and the second positioning hole 334, the length of the first positioning hole 332 is greater than the length of the second positioning hole 334, and an assembly margin is ensured when the light source unit 3 is assembled to the housing 1 through the first positioning hole 332. That is, when there is an error between the actual interval between the first light source positioning post 152 and the second light source positioning post 154 and the preset interval, the light source unit 3 can also be assembled to the housing 1. For example, even if the actual interval between the first light source positioning post 152 and the second light source positioning post 154 is greater than the preset interval, the first light source positioning post 152 can be assembled to the first positioning hole 332, and the second light source positioning post 154 can be assembled to the second positioning hole 334. In this way, the manufacturing accuracy requirement and manufacturing cost of the housing 1 and the optical display 10 can be reduced.

[0085] In other implementations of the present application, the fixing post 14, the first light source positioning post 152, and the second light source positioning post 154 may all be omitted. The light source unit 3 may be directly fixed to the installation surface 1113 of the first side wall 111. The fixing method between the light source unit 3 and the housing 1 is not limited in the present application. For example, the light source unit 3 may omit the non-light-emitting region 302, and the light-emitting region 301 of the light source unit 3 is attached to the first side wall 111 by using an adhesive, and the light source unit 3 covers the first side wall 111.

[0086] In another embodiment of the present application, the light source unit 3 may alternatively be fixed to the outside of the housing 1. That is, the installation surface 1113 may be disposed on the outer surface of the housing 1. For example, a light-transmitting region may be disposed on a side wall of the housing 1, and the imaging light emitted by the light source unit 3 passes through the light-transmitting region and enters the internal cavity of the housing 1. The light-transmitting region may be a through hole or a transparent region.

[0087] 9 and 3, the light-emitting region 301 includes a first light-emitting region end 3011 and a second light-emitting region end 3013 disposed opposite to each other. In some implementations of the present application, the first light-emitting region end 3011 is disposed at an end of the light-emitting region 301 closer to the mounting opening 103. The second light-emitting region end 3013 is disposed at an end of the light-emitting region 301 farther from the mounting opening 103. The imaging light L includes imaging light L1 and imaging light L2. The two channels of imaging light limit the divergence angle of the light emitted by the light source unit 3. The imaging light L1 is emitted from the first light-emitting region end 3011, and the imaging light L2 is emitted from the second light-emitting region end 3013.

[0088] The light-emitting region 301 of the light source unit 3 has a light-emitting surface, and the transmission reflection type optical element 5 has a reflection surface. The light-emitting surface of the light source unit 3 is disposed obliquely with respect to the reflection surface of the transmission reflection type optical element 5, and no other optical elements are required. Since the imaging light emitted from the light-emitting surface can directly enter the transmission reflection type optical element 5, the internal optical path of the optical display 10 and the structure of the optical display 10 are simplified.

[0089] 3 and 10b, the mounting opening 103 has a first mounting end 1031 and a second mounting end 1033 arranged opposite to each other. The first mounting end 1031 is located at an end edge of the second side wall 112 away from the assembly opening 105. The second mounting end 1033 is located at an end edge of the third side wall 113 away from the assembly opening 105. A first point on the first mounting end 1031 and a second point on the second light-emitting area end 3013 are located on the connecting line M. The first light-emitting area end 3011 is located on a first side of the connecting line M, and the second mounting end 1033 is located on a second side of the connecting line M. When a user uses the optical display 10, the eye 80 is located on the first side where the first mounting end 1031 is located, and the eye 80 is located on the connecting line M, so that the eye 80 does not directly see the light-emitting area 301 (i.e., the bright point) of the light source unit 3 during normal viewing. This prevents stray light from the light source unit 3 from being transmitted directly to the human eye through the transmission reflection type optical element 5 (in normal cases, the stray light is first reflected by the transmission reflection type optical element 5 to the curved mirror 7, then reflected by the curved mirror 7, and then incident on the human eye through the transmission reflection type optical element 5), improving the display effect of the optical display 10 and improving the user experience.

[0090] 3, it can be seen that the first mounting end 1031 of the mounting aperture 103 can be referred to as the upper end of the mounting aperture 103, and the second mounting end 1033 can be referred to as the lower end of the mounting aperture 103. Correspondingly, the first light-emitting area end 3011 of the light-emitting area 301 can be referred to as the upper end of the light-emitting area 301, and the second light-emitting area end 3013 can be referred to as the lower end of the light-emitting area 301.

[0091] The transmission reflection type optical element 5 is an optical element that can transmit a part of the incident light incident on the transmission reflection type optical element 5 and reflect a part of the incident light. For example, the transmission reflection type optical element can transmit 50% of the incident light, and the transmission reflection type optical element can reflect 50% of the incident light. Alternatively, the transmission reflection type optical element can transmit 30% of the incident light, and the transmission reflection type optical element can reflect 70% of the incident light. The ratio of the incident light transmitted by the transmission reflection type optical element 5 to the total incident light can be selected according to requirements. The transmission reflection type optical element 5 can be made of glass, etc.

[0092] In this embodiment, the curved mirror 7 is a reflecting mirror that corresponds to the freeform surface required for optical imaging.

[0093] The surface of the optical element used in traditional optical design is a standard spherical surface. Usually, multiple spherical mirrors need to work together to correct the aberration. Therefore, the optical structure of the optical element is complicated and occupies a large space.

[0094] With the development of the optical industry, the design and manufacturing technology of complex aspheric surfaces has been greatly improved. Aspheric surfaces are generally non-rotating surfaces such as paraboloids, ellipsoids, involute surfaces, and hyperbolic surfaces with a rotation axis, as well as higher-order surfaces and non-axis aspheric surfaces. In different usage scenarios, one aspheric surface is usually used to replace two or more spherical surfaces to correct aberrations, simplify the optical structure, and realize the miniaturization and weight reduction of the optical path.

[0095] Compared with aspheric surfaces, free-form surfaces are more complex optical structures. The radius of curvature of each point on the surface is different, and the degree of freedom of the surface is very high. Free-form surfaces can not only replace multiple aspheric surfaces to correct aberrations, but also maximize the improvement of optical quality and simplify the optical structure. Optical free-form surfaces have complex structures and high degrees of freedom, and do not have a clear representation definition. In general, an optical surface that does not have global rotational symmetry, does not have a unified optical axis, and has multiple radii of curvature throughout the surface is considered an optical free-form surface.

[0096] In another implementation of the present application, the curved mirror 7 may alternatively be a spherical reflector or an aspherical reflector, which is not a limitation of the present application.

[0097] 11 and 12, the curved mirror 7 includes a mirror body 72, a connecting portion 74, and a positioning protrusion 76. The connecting portion 74 protrudes from the mirror body 72, and is accommodated in the positioning portion 16, and is configured to be combined with and fixedly connected to the positioning portion 16. The positioning protrusion 76 protrudes from the mirror body 72, and is accommodated in the positioning groove 106.

[0098] The mirror body 72 includes a first end 722, a second end 724, a third end 726, and a fourth end 728. The first end 722 and the second end 724 are disposed opposite each other in a first direction (e.g., the X direction shown in FIGS. 11 and 12). The third end 726 and the fourth end 728 are disposed opposite each other in a second direction (e.g., the Y direction shown in FIGS. 11 and 12), where the first direction is different from the second direction. The normal direction of the first positioning surface 162 is a third direction (the Z direction shown in FIGS. 11 and 12), where the third direction is different from the first direction, and the third direction is different from the second direction. In this implementation, the first direction is perpendicular to the second direction, the first direction is perpendicular to the third direction, and the second direction is perpendicular to the third direction. The first end 722 is disposed on a side where the mirror body 72 is adjacent to the fourth side wall 114. The second end 724 is disposed on a side where the mirror body 72 is adjacent to the fifth side wall 115. The third end 726 is disposed on a side where the mirror body 72 is adjacent to the first side wall 111. The fourth end 728 is disposed on a side where the mirror body 72 is adjacent to the third side wall 113. In some implementations of the present application, in the second direction, in a direction from the fourth end 728 to the third end 726 of the curved mirror 7, the position of the light emitting region 301 of the light source unit 3 is higher than the positions of the curved mirror 7 and the transmission reflection type optical element 5 (as shown in FIGS. 1 and 3 ).

[0099] In some implementations of the present application, there are multiple connection portions 74. Each connection portion 74 is received in a corresponding one of the locating portions 16 and is fixedly connected to the first locating surface 162 in the locating portion 16.

[0100] The connecting portions 74 protrude from the first end 722, the second end 724, and the third end 726. Each connecting portion 74 is accommodated in a corresponding one of the positioning portions 16. Each connecting portion 74 is fixedly connected to the first positioning surface 162 of the positioning portion 16 by using the connecting parts 8. In this embodiment, one connecting portion 74 protrudes from each of the first end 722 and the second end 724, and two connecting portions 74 protrude from the third end 726. The four connecting portions 74 are approximately located at the four corners of the mirror body 72.

[0101] The connecting portion 74 at the first end 722 , the connecting portion 74 at the second end 724 , and the connecting portion 74 at the third end 726 cooperate with corresponding positioning portions 16 so that the curved mirror 7 can be positioned in the main housing 11 .

[0102] Each connecting portion 74 further includes a groove 742 penetrating the connecting portion 74 in the third direction, and the groove is configured to be disposed through the positioning post 18. With reference to Figures 13 and 14, each positioning post 18 of the housing 1 is configured to penetrate the groove 742 of one connecting portion 74 and position the connecting portion 74. This facilitates assembly of the curved mirror 7 and the housing 1, and improves the assembly accuracy and efficiency of the optical display 10.

[0103] On the side of each connection 74 facing the first positioning surface 162, a second positioning surface 740 is disposed, which is pressed or attached to the first positioning surface 162 (as shown in FIG. 12). A reflective layer (e.g., a reflective coating) is disposed on the curved mirror 7 to form a reflective surface that reflects the imaging light. The reflective surface may be located on the side of the curved mirror 7 facing the assembly opening 105, or the reflective surface may be located on the side of the curved mirror 7 away from the assembly opening 105, i.e., facing the mounting opening 103. The second positioning surface 740 may or may not include a reflective layer. The first positioning surface 162 and the second positioning surface 740 are parallel to each other and press against each other to position the curved mirror 7 in a third direction and limit the curved mirror 7 from rotating about the first direction and the second direction. In some implementations of the present application, the second positioning surfaces 740 of the multiple connections 74 are located on the same plane. In other implementations of the present application, the first alignment surface 162 and the second alignment surface 740 may be arranged non-parallel, and the second alignment surfaces 740 of the multiple connections 74 may be arranged parallel or non-parallel.

[0104] Through cooperation between the connecting portions 74 disposed at the ends of the mirror body 72 and the corresponding positioning portions 16, the curved mirror 7 is positioned in three directions and the rotation of the curved mirror 7 around the three directions is also limited. This helps to further improve the positional stability of the curved mirror 7 relative to the housing 1, and further improves the display quality of the optical display 10.

[0105] Due to differences in manufacturing materials, the thermal expansion coefficient of the curved mirror is different from that of other mating parts (e.g., the housing) of the optical display. Therefore, when the ambient temperature changes significantly, the curved mirror is easily deformed due to the pressure of other mating parts. The curved mirror and the housing are used as an example. When the ambient temperature of the optical display is higher than a preset temperature (e.g., 70 degrees Celsius), the curved mirror and the housing may deform due to thermal expansion, and the housing may press the curved mirror. When the curved mirror is deformed, the optical path of the imaging light reflected by the deformed part is distorted, and as a result, the output quality of the imaging light of the optical display is affected.

[0106] In some implementations of the present application, the curved mirror 7 has a thermal expansion coefficient different from that of the housing 1. Due to the thermal expansion coefficients of the housing 1 and the curved mirror 7, there is a reserved gap 700 between the ends of the curved mirror 7 (including the first end 722, the second end 724, the third end 726, the fourth end 728 and the end of the connecting portion 74) to reserve space for thermal expansion of the curved mirror 7 and the housing 1 (as shown in FIG. 14 ). This reduces the possibility that the curved mirror 7 will deform due to compression, improving the optical path stability of the optical display 10.

[0107] The secured gap 700 includes a first secured gap 701 and a second secured gap 702. The first secured gap 701 is provided between the side surface 164 and an end of the connecting portion 74 to secure a thermal expansion space for the connecting portion 74 and the housing 1.

[0108] The second secured gap 702 is provided between the inner wall of the groove 742 of each connecting portion 74 and the corresponding positioning post 18 to secure a thermal expansion space between the positioning post 18 and the connecting portion 74. In some implementations of the present application, the length of the mirror body 72 in the first direction may be greater than the length of the mirror body 72 in the second direction, and the thermal expansion degree of the curved mirror 7 in the first direction may be greater than the thermal expansion degree of the curved mirror 7 in the second direction. The positioning portion 16 on the fourth side wall 114 and the corresponding connecting portion 74 are used as an example. In the first direction, the second secured gap 702 exists between a part of the inner wall of the groove 742 and the corresponding positioning post 18. In the second direction, by bringing a part of the inner wall of the groove 742 into close contact with the corresponding positioning post 18, the possibility of deformation of the curved mirror 7 due to thermal expansion is reduced, and the positioning accuracy of the connecting portion 74 on the positioning portion 16 is improved. In another implementation of the present application, the length of the mirror body 72 in the first direction is greater than or equal to the length of the mirror body 72 in the second direction.

[0109] 12 , the positioning protrusion 76 protrudes from the fourth end 728 of the mirror body 72, and the positioning protrusion 76 is received in the positioning groove 106 and fixed to the inner wall of the positioning groove 106 to position the curved mirror 7 in the first direction. This can improve the assembly efficiency and assembly accuracy when assembling the curved mirror 7 to the housing 1. The shape of the positioning protrusion 76 can be square, cone, etc. The shape of the positioning protrusion 76 is not limited in the present application. In other implementations of the present application, the positioning protrusion 76 can be received in the positioning groove 106.

[0110] The number and positions of the connecting portions 74 on the curved mirror 7 are not limited in the present application, and the number and positions of the positioning protrusions 76 on the ends of the mirror body 72 are also not limited in the present application. For example, as shown in FIG. 15a, in a possible implementation, the connecting portion 74 on the third end 726 may be omitted, the connecting portion 74 on the first end 722 may be disposed near the third end 726, the connecting portion 74 on the second end 724 may be disposed near the third end 726, and the two connecting portions 74 may protrude from the fourth end 728. As shown in FIG. 15b, in a possible implementation, the positioning protrusion 76 on the fourth end 728 may be omitted, and no connecting portion 74 is disposed on the fourth end 728. As shown in FIG. 15c, in a possible implementation, the connecting portion 74 on the first end 722 may be omitted, and the connecting portion 74 on the second end 724 may be omitted. The positioning protrusions 76 are disposed on each of the third end 726 and the fourth end 728. The curved mirror 7 is fixed to the housing by fixing the positioning protrusions 76 in the positioning grooves 106. As shown in Fig. 15d, in a possible implementation, a positioning protrusion 76 is disposed at each of the first end 722, the second end 724, the third end 726 and the fourth end 728.

[0111] In another implementation of the present application, the locating post 18, the locating portion 16 and the connecting post 19 may be omitted and the connecting portion 74 is fixed directly to the housing 1 by using an adhesive or another method.

[0112] The shape of the mirror body 72 is not limited in the present application, the number of ends of the mirror body 72 is not limited, and the number of connecting portions 74 is not limited. For example, in another embodiment of the present application, the mirror body 72 may be circular, the mirror body 72 may have one end, the connecting portion 74 may be one, and the connecting portion 74 protrudes from the mirror body 72.

[0113] In the present application, the positioning protrusion 76 is not limited to being disposed at the fourth end 728, and the positioning protrusion 76 is disposed at an end of the mirror body 72. In another implementation of the present application, the positioning groove 106 and the positioning protrusion 76 may be omitted.

[0114] In another implementation of the present application, the curved mirror 7 may not be accommodated in the internal cavity of the main housing 11, the curved mirror 7 may be fixedly covering the assembly opening 105, the positioning portion 16 may be disposed outside the housing 1, the first positioning surface 162 may be located outside the housing 1, and the positioning groove 106 may also be provided outside the housing 1.

[0115] 2b, 11, 16 and 17, there are a plurality of connection parts 8. Each connection part 8 includes a flexible buffer 82, a pressing sheet 84, a first fixing member 86 and a second fixing member 88. The flexible buffer 82 is fixed between the connection part 74 and the pressing sheet 84, and the connection part 74, the flexible buffer 82 and the pressing sheet 84 are stacked in sequence. The first fixing member 86 penetrates the pressing sheet 84 and the groove 742 of the connection part 74 (as shown in FIG. 14), and is fixedly connected to one positioning post 18. The second fixing member 88 penetrates the pressing sheet 84 and is fixedly connected to one connection post 19. Both the first fixing member 86 and the second fixing member 88 apply a force to the pressing sheet 84, and the pressing sheet 84 presses the connection part 74 against the first positioning surface 162 to implement a fixed connection between the housing 1 and the curved mirror 7. The flexible buffer 82 may alternatively be located between the first fixing member 86 and the second fixing member 88. In another implementation of the present application, the first fixing member 86 and the second fixing member 88 may pass through the flexible buffer 82, and the length of the flexible buffer 82 and the length of the pressing sheet 84 may be equal to or less than the length of the pressing sheet 84.

[0116] The flexible buffer 82 has elastic deformation ability. The flexible buffer 82 can reduce the possibility that the connection 74 is damaged due to the pressing sheet 84 being pressed too hard. In addition, the flexible buffer 82 can absorb vibrations, improve the seismic performance of the optical display 10, and further improve the quality of the imaging light output by the optical display 10. The flexible buffer 82 can be made of a rubber strip, a foam, a silicone rubber, or other elastomeric material. In some implementations of the present application, the hardness of the pressing sheet 84 is greater than the hardness of the flexible buffer 82. The pressing sheet 84 can be selected from one of, but not limited to, a sheet metal part, a die-casting part, or a plastic part.

[0117] The curved mirror 7 is pressed against the housing 1 by using a pressing sheet 84, and the position of the curved mirror 7 is limited between the housing 1 and the pressing sheet 84. This improves the positional stability of the curved mirror 7 on the housing 1, reduces the possibility that the curved mirror 7 will be damaged by a large local force, and extends the life of the curved mirror 7, thereby helping to improve the usage reliability of the optical display 10.

[0118] In some implementations of the present application, the first fixing member 86 and the second fixing member 88 are screws. Both the positioning post 18 and the connecting post 19 are provided with screw holes. The first fixing member 86 is screw-connected to the positioning post 18, and the second fixing member 88 is screw-connected to the connecting post 19. The connecting post 19 can be one of, but not limited to, a self-tapping stud, a hot melt nut, or an in-mold decoration nut. Both the first fixing member 86 and the second fixing member 88 penetrate the pressing sheet 84 and are fixed to the housing 1 to press and fix the curved mirror 7 to the housing 1. This improves the connection strength and connection stability between the curved mirror 7 and the housing 1.

[0119] In some implementations of the present application, the connection portion 74 and the positioning protrusion 76 may be omitted, and the curved mirror 7 is fixed directly to the housing 1 by using the connection parts 8 .

[0120] In some implementations of the present application, the positioning portion 16, the first positioning surface 162, the positioning post 18, and the connecting post 19 may be omitted from the housing 1. The second fixing member 88 and the pressing sheet 84 may be omitted from the connecting part 8, and the flexible buffer 82 and the curved mirror 7 are directly fixed to the housing 1 by using the first fixing member 86. For example, the first fixing member 86 may be fixedly connected to the housing 1 via the flexible buffer 82.

[0121] In some other implementations of the present application, the vehicle may be a truck, motorcycle, bus, boat, helicopter, lawn mower, recreational vehicle, playground vehicle, construction equipment, streetcar, golf cart, train, trolley, etc., although this is not specifically limited in the present application.

[0122] In a possible implementation, the optical display 10 in the present application is integrated into an in-vehicle display, as shown in Fig. 18a. The in-vehicle display can be installed on the back of the seat of the vehicle 1000, or the in-vehicle display can be installed in another position, such as the passenger seat. The installation position of the in-vehicle display is not particularly limited in the present application.

[0123] As shown in FIG. 18b, the optical display 10 is integrated into a head-up display (HUD) in FIG. 18b. The HUD can project navigation information, instrument information, etc., into the driver's forward viewing angle to prevent the driver from looking down to view information, which affects driving safety. The vehicle further includes a reflector 201 configured to project the imaging light emitted by the HUD to the outside of the vehicle. The reflector 201 can be a windshield. After the imaging light emitted by the HUD is reflected by the reflector 201, a virtual image is formed outside the vehicle. Types of HUD include, but are not limited to, a windshield (W)-HUD, an augmented reality head-up display (AR-HUD), etc. In FIG. 18a, the optical display 10 partially protrudes from the rear of the seat. Alternatively, the optical display can be fully embedded in the rear of the seat. That is, the optical display does not protrude from the rear of the seat.

[0124] In yet another possible implementation, the optical display 10 of the present application may alternatively be integrated into a vehicle light, which in addition to the lighting function may project complex images such as text or traffic signs, and may also implement an Adaptive Driving Beam (ADB) function that may project images such as videos to add driving assistance or entertainment functions.

[0125] FIG. 19 is a functional diagram of a vehicle according to an embodiment of the present application.

[0126] The vehicle may include various subsystems such as a sensor system 21, a control system 22, one or more peripheral devices 23 (one peripheral device is used as an example in the figure), a power supply 24, a computer system 25, and a display system 26. The aforementioned subsystems may communicate with each other. The display system 26 may include a display device provided in the embodiment of the present application. The vehicle may further include other functional systems, such as an engine system that powers the vehicle or a cockpit, which is not limited here in the present application.

[0127] The sensor system 21 may include some detection devices. The detection devices can sense the measured information and convert the sensed information into a required form of electrical signal or other information based on a certain rule for output. As shown in Fig. 19, the detection devices may include a global positioning system (GPS), a vehicle speed sensor, an inertial measurement unit (IMU), a radar unit, a laser range finder, a camera device, a wheel speed sensor, a steering sensor, a gear sensor, or other elements used for automatic detection, etc. This is not limited to the present application.

[0128] The control system 22 may include several elements such as a steering unit, a brake unit, a lighting system, an automatic driving system, a map navigation system, a network time system, and an obstacle avoidance system, as shown in the figure. The control system 22 may receive information (such as vehicle speed and following distance) transmitted by the sensor system 21 and perform functions such as automatic driving and map navigation.

[0129] Optionally, the control system 22 may further include elements such as a throttle controller and an engine controller configured to control the driving speed of the vehicle, which are not limited herein.

[0130] The peripheral device 23 may include several elements such as a communication system, a touch screen, a user interface, a microphone and a speaker. The communication system is configured to implement network communication between the vehicle and other devices other than the vehicle. In practical applications, the communication system may use wireless communication technology or wired communication technology to implement network communication between the vehicle and other devices. Wired communication technology means that the vehicle communicates with other devices via network cables, optical fibers, etc.

[0131] The power source 24 represents a system for supplying power or energy to a vehicle, and may include, but is not limited to, rechargeable lithium batteries and lead acid batteries. In practical applications, one or more battery modules in the power source are configured to provide electrical energy or energy for starting a vehicle. The type and material of the power source are not limited in this application.

[0132] Some functions of the vehicle may be controlled and performed by a computer system 25. The computer system 25 may include one or more processors 2501 (one processor is shown in the figure as an example) and a memory 2502 (also called a storage device). In practical applications, the memory 2502 may be internal to the computer system 25 or external to the computer system 25, and may be used, for example, as a cache in the vehicle, which is not a limitation of the present application.

[0133] The processor 2501 includes a graphics processing unit. The processor 2501 may include one or more general-purpose processors, such as a graphics processing unit (GPU), a graphics processing unit (GPU), etc. The processor 2501 may be configured to execute associated programs or instructions corresponding to programs stored in the memory 2502 to perform corresponding functions of the vehicle.

[0134] The memory 2502 is a volatile memory. The memory may alternatively include non-volatile memory, such as RAM. The memory 2502 may include a memory such as a ROM, a flash memory, a HDD or a solid state drive SSD. The memory 2502 may alternatively include a combination of the above types of memory. The memory 2502 is configured to store a program code or a set of instructions corresponding to the program code, so that the processor 2501 calls the program code or instructions stored in the memory 2502 to implement the corresponding function of the vehicle. In the present application, the memory 2502 may store a set of program codes for controlling the vehicle. The processor 2501 may control the safe operation of the vehicle by calling the program code. How to implement the safe operation of the vehicle will be described in detail below in the present application.

[0135] Optionally, in addition to storing program codes or instructions, the memory 2502 may further store information such as road maps, driving routes, sensor data, etc. The computer system 25 may perform vehicle-related functions in combination with other elements in the vehicle's functional framework diagram, such as sensors in the sensor system and GPS. For example, the computer system 25 may control the driving direction, driving speed, etc. of the vehicle based on the data input of the sensor system 21, but this is not limited in this application.

[0136] The display system 26 may interact with other systems of the vehicle. For example, the display system 26 may display navigation information transmitted by the control system 22 or play videos transmitted by the computer system 25 and the peripheral devices 23. For the specific configuration of the display system 26, please refer to the above-mentioned embodiment of the display device. The details will not be described again here.

[0137] The four subsystems shown in this embodiment, namely, the sensor system 21, the control system 22, the computer system 25 and the display system 26, are merely examples and are not limiting. In practical applications, the vehicle may combine some elements in the vehicle based on different functions to obtain subsystems with corresponding different functions. In practical applications, the vehicle may include more or less systems or elements, which is not limited in this application.

[0138] The vehicle in the embodiment of the present application may be a known vehicle, such as a car, an airplane, a boat or a rocket, or may be a vehicle that will emerge in the future. The vehicle may be an electric vehicle, a fuel vehicle or a hybrid power vehicle, such as a pure electric vehicle, a long-distance electric vehicle, a hybrid electric vehicle, a fuel cell vehicle or a new energy vehicle, which is not specifically limited in the present application.

[0139] The optical display 10 is not limited to be used in the vehicle 1000 in this application, and the optical display 10 may be used in other devices. In a possible application scenario, the optical display of this application is integrated into a Near Eye Display (NED) device, and the NED device may be, for example, an AR device or a VR device. The AR device may include, but is not limited to, AR glasses or an AR helmet, and the VR device may include, but is not limited to, VR glasses or a VR helmet. With reference to FIG. 20, the AR glasses are used as an example. A user may wear the AR glasses device to play games, watch videos, participate in virtual meetings, do video shopping, etc.

[0140] In another possible application scenario, the optical display 10 of the present application is integrated into a projector. Referring to Figure 21, the projector may project an image onto a wall or a projection screen.

[0141] The above application scenarios are just examples. The optical display provided in this application can be further applied in other possible scenarios, such as medical devices, which are not limited in this application.

[0142] The directional terms described in this application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and "sidewall", are merely directions based on the accompanying drawings. Thus, the directional terms are used to better and more clearly describe and understand this application, rather than indicating or implying that a particular device or element has a particular orientation and needs to be constructed and operated in a particular orientation. Thus, this should not be understood as a limitation of this application.

[0143] In addition, in this specification, sequence numbers such as "first" and "second" of components are merely intended to distinguish the objects described and have no sequential or technical meaning. Unless otherwise specified, "connected" in this application includes direct connection and indirect connection.

[0144] The above description is merely a specific implementation of the present application, and is not intended to limit the scope of protection of the present application. Any modifications or replacements that are easily understood by those skilled in the art within the technical scope disclosed in the present application shall be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. a housing having a first alignment surface; a light source unit fixed to the housing and configured to emit imaging light; a curved mirror including a mirror body and a connecting portion protruding from the mirror body, the mirror body being configured to reflect the imaging light out of the housing, the connecting portion being fixedly connected to the first positioning surface; An optical display including:

2. The optical display of claim 1 , wherein the connection portion comprises a groove, and the housing further includes a positioning post protruding from the first positioning surface, the positioning post passing through the groove.

3. The optical display of claim 2 , wherein a secured gap exists between an inner wall of the groove and the positioning post.

4. The optical display of claim 2 , wherein the housing further includes a positioning portion disposed on the housing, the first positioning surface being disposed on an inner wall of the positioning portion, and the connection portion being housed within the positioning portion.

5. The optical display according to claim 4 , wherein the inner wall of the positioning portion further includes a side surface connected to the first positioning surface, and a gap is provided between the side surface and an end of the connection portion.

6. 3. The optical display of claim 2, wherein there are a plurality of connecting portions, the mirror body includes a first end, a second end, a third end and a fourth end, the first end and the second end being arranged oppositely in a first direction, the third end and the fourth end being arranged oppositely in a second direction, the first direction being different from the second direction, the first end, the second end and the third end each being provided with the connecting portion, the groove provided for the connecting portion penetrating the connecting portion in a third direction, the third direction being different from the first direction, and the third direction being different from the second direction.

7. The optical display of claim 2, further comprising a connecting component, the connecting component including a pressing sheet and a first fixing member, the curved mirror being positioned between the pressing sheet and the housing, the first fixing member penetrating the pressing sheet and the positioning post, and the pressing sheet pressing the curved mirror against the housing.

8. The optical display of claim 7 , wherein the housing further includes a connection post protruding from the first positioning surface, and the connection component further includes a second fixing member, the second fixing member fixedly connected to the connection post.

9. The optical display according to claim 7 , wherein the connection part further includes a flexible buffer, the flexible buffer being located between the pressing sheet and the connection part.

10. The optical display of claim 1 , wherein the housing includes a positioning slot, and the curved mirror includes a mirror body and a positioning protrusion protruding from an end of the mirror body, the positioning protrusion being received within the positioning slot.

11. the housing includes an assembly opening communicating with an interior cavity of the housing, the curved mirror being disposed within the assembly opening; The optical display of claim 1 , further comprising a cover, the cover fixedly connected to the housing and covering the curved mirror.

12. A sheet comprising an optical display according to any one of claims 1 to 11, said optical display being disposed on said sheet.

13. A vehicle comprising an optical display according to any one of claims 1 to 11, said optical display being mounted on said vehicle.

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