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 that uses the principle of optical imaging to provide a large-screen visual experience in a small space, 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 imaging light emitted from a light source unit to the outside of the optical display.

[0003] In a commonly used optical display, 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 that requires more assembly processes. Summary of the Invention

[0004] The embodiments of the present application provide an optical display, a sheet, and a 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 has 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 connecting portion protruding from the mirror body. The mirror body is configured to reflect the imaging light to the outside of the housing, and the connecting portion is fixedly connected to the first positioning surface.

[0006] The method for fixing a curved mirror in a 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 that requires more assembly steps and occupies more space. This is not conducive to the development of a high screen-to-body ratio. There are assembly tolerances between elements. As the number of elements in an optical display increases, the assembly precision may decrease. 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, which reduces the number of elements of the optical display, simplifies the structure of the optical display, reduces the space occupied by the optical display, and reduces 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 each other, pressed against each other, or in contact with each other. The connecting portion and the first positioning surface may be secured by adhesive, fasteners, etc.

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

[0011] In the assembly process of the curved mirror and the housing, the positioning post can position the connecting portion, which facilitates the assembly of the curved mirror and the housing, and improves the assembly precision and efficiency of the optical display.

[0012] According to a first aspect, in a possible implementation, there is a gap secured 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 components of the optical display. Therefore, when the ambient temperature changes significantly, the curved mirror is easily deformed due to pressure from other mating components. For example, when a curved mirror is used in a vehicle, if the internal temperature of the vehicle (i.e., the ambient temperature where the optical display is located) is higher than a predetermined temperature (e.g., 70 degrees Celsius), the curved mirror and its housing may deform due to thermal expansion, and the housing may press against the curved mirror. When the curved mirror deforms, the optical path of the imaging light reflected by the deformed portion is distorted, thereby affecting the output quality of the imaging light from the optical display.

[0014] In this application, due to the thermal expansion rate of the material caused by the change in ambient temperature, there is a gap 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 housed within the positioning portion.

[0016] Since the connecting portion is housed within the positioning portion, when the positioning portion positions the connecting portion, rotation of the curved mirror relative to the housing can be limited, thereby improving the positional stability of the curved mirror relative 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, and a gap is provided 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 in ambient temperature, there is a gap between the side surface and the connection portion 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 portions, 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 opposite to each other in a first direction, the third end and the fourth end being arranged opposite to each other in a second direction, the first direction being different from the second direction, the first end, the second end, and the third end being provided with a connecting portion, and a groove provided for the connecting portion penetrates 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.

[0020] By arranging the connecting portions at the three ends of the mirror body, the curved mirror is positioned in three directions and rotation of the curved mirror around 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, thereby further improving the assembly accuracy between the curved mirror and the housing.

[0022] According to the first aspect, in a possible implementation, the optical display further includes a connecting component. The connecting component includes a pressing sheet and a first fixing member. The curved mirror is positioned 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 against the housing.

[0023] The curved mirror is pressed onto 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, thereby 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 and second fixing members 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 will be 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 one 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, and 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. The placement of the cover serves to seal the assembly opening and reduce dust entering the housing.

[0030] According to the first aspect, in a possible implementation, the housing includes a mounting opening communicating with an internal cavity of the housing. The optical display further includes a transmission-reflection optical element. The transmission-reflection optical element is fixed to the housing and covers the mounting opening. The transmission-reflection optical element is configured to reflect the imaging light emitted by the light source unit to the curved mirror. The transmission-reflection optical element changes the transmission path of the imaging light emitted by the light source unit, thereby facilitating flexible arrangement of the optical path within the housing according to requirements and improving the degree of freedom in 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 a 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 their 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 behind a seat, in the passenger seat, etc. A user may use the optical display to view videos, etc., thereby improving the entertainment function of the vehicle.

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

[0036] [Figure 1] FIG. 1 is a diagram of an application scenario of a means of transportation 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. [Figure 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 an optical display housing according to one embodiment of the present application. [Figure 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 local enlarged view of region A in FIG. 2a. [Figure 7] FIG. 7 is a local 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 the 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 invention 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 invention. [Figure 13] FIG. 13 is a diagram of a housing and curved mirror assembled together according to one implementation of the present application. [Figure 14] FIG. 14 is a locally 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, viewed 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 application. [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 implementation of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0037] Referring to FIG. 1 , one embodiment of the present application provides a vehicle 1000. The vehicle 1000 in 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-powered 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. This 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 located in the cockpit 200. The second seat 500 is a rear seat located 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, the passengers viewing the optical display 10 on the second seat 500 are referred to as viewers. 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, the 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 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 is 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 conventional optical displays, optical elements such as light sources and curved mirrors are first fastened to their respective fastening frames and then assembled into a housing. In this case, the number of elements in the optical display increases. Due to the assembly tolerances between elements, the increase in the number of elements can make it difficult to assemble the system / device, and the assembly accuracy can decrease.

[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), which reduces the number of elements of the optical display 10, reduces the difficulty of assembling the optical display 10, improves the assembly precision of the optical display 10, and simplifies the structure of the optical display 10. This helps to improve the precision of the optical path system of the optical display 10 and improves the output quality of the imaging light from 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, allowing the eye 80 to view a magnified virtual image. This virtual image can be viewed 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 is reflected by the transflective optical element 5 and the curved mirror 7 and then enters the eye 80. In this case, the brain traces the light backward based on the experience of "linear propagation of light," and considers 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 referred to as the 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 the upper portion of the housing 1) and a second portion 1103 (which may be considered the lower portion of the housing 1) that are connected together. The cavity enclosed 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 is connected to the internal cavity of the main housing 11, and the assembly opening 105 is connected to 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 housed in the first portion 1101. The transflective optical element 5 and the curved mirror 7 are located on the second portion 1103.

[0051] The light source unit 3 is installed and housed in the first section 1101, and the transmission / reflection type optical element 5 and the curved mirror 7 are located on the second section 1103. Therefore, when a user is looking at the optical display 10, the use of the transmission / reflection type optical element 5 makes it difficult for the user to see the light source unit 3 located in the first section 1101. In other words, the light source unit 3 is hidden within the first section 1101. Stray light from the light source unit 3 does not directly reach the human eye via the transmission / reflection type optical element 5, improving the user experience and also improving the imaging quality of the optical display 10.

[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 faces the internal cavity of the main housing 11 and is configured to be connected to (install) the light source unit 3.

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

[0055] The fourth side wall 114 and the fifth side wall 115 are disposed opposite 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. 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 arranged outside the main housing 11, so the mounting portion 13 does not affect the internal optical path of the optical display 10. In other words, the mounting portion 13 does not affect the transmission of the imaging light inside the main housing 11, so the generation of reflected stray light in the optical display 10 is reduced and the output quality of the imaging light from the optical display 10 is improved.

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

[0058] The transmission-reflection-type optical element 5 is fixedly connected to a 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. Therefore, using the housing 1 improves the positioning accuracy of the transmission-reflection-type optical element 5, and improves the output quality of the imaging light in the optical display 10.

[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 located 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 arranged 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 arranged 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 segment or region units. In other words, 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 edge 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 edge of the transmission reflection type optical element 5, the possibility of a user being scraped or cut by the edge of the transmission reflection type optical element 5 is reduced, improving the safety and reliability of the optical display 10.

[0064] In other 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, thereby improving the positioning accuracy of the light source unit 3 by using the housing 1 and improving the output quality of the imaging light of the optical display 10. 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 multiple positioning portions 16, and the multiple positioning portions 16 are arranged on the inner walls 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 have a generally groove-like structure. For example, as shown in FIG. 8b, the positioning portion 16 on the first side wall 111 is a groove-like structure arranged in 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 arranged facing the assembly opening 105 and is configured to be attached to the curved mirror 7 to improve 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 surfaces 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 or may not be parallel to each other. In other implementations of the present application, the normal direction of the first positioning surfaces 162 may be different from the normal direction of the assembly opening 105.

[0072] The housing 1 further includes a positioning post 18 that protrudes from the first positioning surface 162 and is 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 other implementations of the present application, the housing 1 may not be an integrally formed housing.

[0075] In another embodiment of the present application, there is no limitation on the structure of the housing 1. 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 housed 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 liquid crystal display (LCD) imaging technology. LCD imaging utilizes 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 placed 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 polarization also changes, reducing the intensity of the light passing through the second polarizer. Each pixel of an LCD has three primary colors. A color image is displayed by controlling the intensity of the three primary colors. The present application does not limit the type of light source of the light source unit 3. For example, the light source unit 3 can also 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 fixing holes 31. The number of fixing holes 31 corresponds to the number of fixing posts 14. There are four fixing holes 31, which 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, each having a threaded hole into which a screw fits. The screw passes through the fixing hole 31 and then passes through the threaded hole of the fixing post 14 to fix the light source unit 3 to the fixing post 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 irregularly shaped, and the light source unit 3 may emit imaging light. In another embodiment of the present application, the fixing post 14 may be fixed by passing through the fixing hole 31.

[0081] The non-light emitting area 302 is provided with a positioning hole 33 through which the light source positioning post 15 is inserted 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 passes through the first positioning hole 332, and the second light source positioning post 154 passes through 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 strip-shaped hole whose length in the first direction is longer than the diameter of the second positioning hole 334.

[0083] In an ideal situation, the shape of the positioning holes 33 matches 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, due to inevitable manufacturing errors, there is an error between the actual interval between the two light source positioning posts 15 and the preset interval. 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, so that an assembly margin is ensured when assembling the light source unit 3 to the housing 1 via the first positioning hole 332. That is, even if there is an error between the actual distance between the first light source positioning post 152 and the second light source positioning post 154 and the preset distance, the light source unit 3 can also be assembled to the housing 1. For example, even if the actual distance between the first light source positioning post 152 and the second light source positioning post 154 is greater than the preset distance, 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 requirements and manufacturing costs of the housing 1 and the optical display 10 can be reduced.

[0085] In another embodiment 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 method of fixing the light source unit 3 to the housing 1 is not limited to this 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 may be attached to the first side wall 111 using an adhesive, so that 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 the 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 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 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 optical element 5, and no other optical element is required. The imaging light emitted from the light-emitting surface can directly enter the transmission / reflection optical element 5, which simplifies the internal optical path of the optical display 10 and the structure of the optical display 10.

[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 the end of the second side wall 112 away from the assembly opening 105. The second mounting end 1033 is located at the end 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 region 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 via 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 via the transmission-reflection-type optical element 5), thereby improving the display effect of the optical display 10 and the user experience.

[0090] 3, it can be seen that the first mounting end 1031 included in the mounting opening 103 can be referred to as the upper end of the mounting opening 103, and the second mounting end 1033 can be referred to as the lower end of the mounting opening 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 portion of incident light entering the transmission-reflection type optical element 5 and reflect a portion of the incident light. For example, a transmission-reflection type optical element can transmit 50% of the incident light, and a transmission-reflection type optical element can reflect 50% of the incident light. Alternatively, a transmission-reflection type optical element can transmit 30% of the incident light, and a transmission-reflection type optical element can reflect 70% of the incident light. The proportion 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 free-form surface required for optical imaging.

[0093] The surfaces of optical elements used in traditional optical designs are standard spherical surfaces. Usually, multiple spherical mirrors are required to work together to correct aberrations. Therefore, the optical structure of the optical element is complex and occupies a large space.

[0094] With the development of the optical industry, the design and manufacturing technology of complex aspherical surfaces has improved significantly. Aspherical surfaces are generally non-rotating surfaces such as quadratic surfaces with a rotation axis, such as paraboloids, ellipsoids, involute surfaces, and hyperbolic surfaces, as well as higher-order surfaces and non-axial aspherical surfaces. In different application scenarios, one aspherical surface is usually substituted for two or more spherical surfaces to correct aberrations, simplify the optical structure, and achieve a smaller and lighter optical path.

[0095] Compared to aspherical surfaces, free-form surfaces have a more complex optical structure. The radius of curvature at 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 aspherical surfaces to correct aberrations, but also maximize optical quality and simplify optical structures. Optical free-form surfaces have a complex structure and a high degree of freedom, so there is no clear definition of their meaning. Generally, optical surfaces that do not have global rotational symmetry, do not have a unified optical axis, and have multiple radii of curvature across the entire surface are considered optical free-form surfaces.

[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 the side where the mirror body 72 is adjacent to the fourth sidewall 114. The second end 724 is disposed on the side where the mirror body 72 is adjacent to the fifth sidewall 115. The third end 726 is disposed on the side where the mirror body 72 is adjacent to the first sidewall 111. The fourth end 728 is disposed on the side where the mirror body 72 is adjacent to the third sidewall 113. In some implementations of the present application, in the second 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 positioning portions 16 and is fixedly connected to the first positioning surface 162 in the positioning 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 located approximately 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 on the main housing 11 .

[0102] Each connecting portion 74 further includes a groove 742 that penetrates the connecting portion 74 in the third direction, and the groove is configured to be disposed so as to penetrate the positioning post 18. Referring 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] Each connecting portion 74 has a second positioning surface 740 disposed on the side opposite the first positioning surface 162, the second positioning surface 740 being pressed against or attached to the first positioning surface 162 (as shown in FIG. 12 ). The curved mirror 7 has a reflective layer (e.g., a reflective coating) disposed thereon to form a reflective surface that reflects 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 have 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 rotation of the curved mirror 7 about the first and second directions. In some implementations of the present application, the second positioning surfaces 740 of the multiple connecting portions 74 are located on the same plane. In other implementations of the present application, the first positioning surface 162 and the second positioning surface 740 may be arranged non-parallel, and the second positioning surfaces 740 of the multiple connecting portions 74 may be arranged parallel or non-parallel.

[0104] By cooperation of the connecting portions 74 arranged at the end of the mirror body 72 with the corresponding positioning portions 16, the curved mirror 7 is positioned in three directions and 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 components (e.g., the housing) of the optical display. Therefore, when the ambient temperature changes significantly, the curved mirror is easily deformed due to pressure from other mating components. The curved mirror and the housing are used as an example. When the ambient temperature of the optical display is higher than a predetermined temperature (e.g., 70 degrees Celsius), the curved mirror and the housing may deform due to thermal expansion, and the housing may press against the curved mirror. When the curved mirror deforms, the optical path of the imaging light reflected by the deformed portion is distorted, thereby affecting the output quality of the imaging light from the optical display.

[0106] In some implementations of the present application, the curved mirror 7 has a different thermal expansion coefficient than the housing 1. Due to the thermal expansion coefficients of the housing 1 and the curved mirror 7, a reserved gap 700 exists 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) (as shown in FIG. 14 ) to allow space for thermal expansion of the curved mirror 7 and the housing 1. This reduces the possibility of deformation of the curved mirror 7 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 the end of the connecting portion 74 to secure a thermal expansion space for the connecting portion 74 and the housing 1.

[0108] A second gap 702 is provided between the inner wall of the groove 742 of each connecting portion 74 and the corresponding positioning post 18 to ensure 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 rate of the curved mirror 7 in the first direction may be greater than the thermal expansion rate of the curved mirror 7 in the second direction. The positioning portion 16 and the corresponding connecting portion 74 on the fourth side wall 114 are used as an example. In the first direction, the second gap 702 exists between a portion of the inner wall of the groove 742 and the corresponding positioning post 18. In the second direction, by bringing a portion 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, conical, etc. The shape of the positioning protrusion 76 is not limited in the present application. In another embodiment 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 herein, and the number and positions of the positioning protrusions 76 on the ends of the mirror body 72 are also not limited herein. 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 at 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 at 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 Figure 15d, in a possible implementation, a positioning protrusion 76 is located 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 positioning post 18, the positioning portion 16 and the connecting post 19 may be omitted, and the connecting portion 74 is fixed directly to the housing 1 by using adhesive or another method.

[0112] The present application does not limit the shape of the mirror body 72, the number of ends of the mirror body 72, or the number of connecting portions 74. 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 may protrude 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, but 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 housed in the internal cavity of the main housing 11, the curved mirror 7 may fixedly cover the assembly opening 105, the positioning portion 16 may be located 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 multiple connection components 8. Each connection component 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 portion 74 and the pressing sheet 84, and the connection portion 74, the flexible buffer 82, and the pressing sheet 84 are stacked in this order. The first fixing member 86 penetrates the pressing sheet 84 and a groove 742 in the connection portion 74 (as shown in FIG. 14) and is fixedly connected to one of the positioning posts 18. The second fixing member 88 penetrates the pressing sheet 84 and is fixedly connected to one of the connection posts 19. Both the first fixing member 86 and the second fixing member 88 apply force to the pressing sheet 84, and the pressing sheet 84 presses the connection portion 74 against the first positioning surface 162, thereby achieving a fixed connection between the housing 1 and the curved mirror 7. Alternatively, the flexible buffer 82 may 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 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 of the connection portion 74 being 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, foam, silicone rubber, or other elastomeric material. In some implementations of the present application, the pressing sheet 84 has a greater hardness than the flexible buffer 82. The pressing sheet 84 can be selected from, but is not limited to, one of a sheet metal part, a die-cast part, or a plastic part.

[0117] The curved mirror 7 is pressed against the housing 1 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 have threaded holes. The first fixing member 86 is threadedly connected to the positioning post 18, and the second fixing member 88 is threadedly connected to the connecting post 19. The connecting post 19 may be one of, but is 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 pass through the pressing sheet 84 and are fixed to the housing 1, thereby pressing and fixing the curved mirror 7 to the housing 1. This improves the connection strength and stability between the curved mirror 7 and the housing 1.

[0119] In some implementations of the present application, the connecting 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 connecting piece 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 component 8, and the flexible buffer 82 and the curved mirror 7 are directly fixed to the housing 1 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. This is not specifically limited in the present application.

[0122] 18a, in a possible implementation, the optical display 10 in the present application is integrated into an in-vehicle display. The in-vehicle display can be installed on the back of a 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 field of view to prevent the driver from looking down to view information, which may affect driving safety. The vehicle further includes a reflector 201 configured to project imaging light emitted by the HUD to the outside of the vehicle. The reflector 201 may 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 HUDs include, but are not limited to, windshield (W)-HUDs, augmented reality head-up displays (AR-HUDs), etc. In FIG. 18a, the optical display 10 partially protrudes from the rear of the seat. Alternatively, the optical display may be completely 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 its lighting function can project complex images such as text or traffic signs, and can also implement an Adaptive Driving Beam (ADB) that can project images such as video for added driver 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 an 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.

[0127] The sensor system 21 may include several detection devices. The detection devices can sense measured information and convert the sensed information into an electrical signal or other information of a required format based on a specific 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 in 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 autonomous 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 autonomous driving and map navigation.

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

[0130] The peripheral devices 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 the vehicle. The type and material of the power source are not limited herein.

[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. This is not a limitation of the present application.

[0133] The processor 2501 includes a graphics processing unit (GPU). The processor 2501 may include one or more general-purpose processors, such as 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). Alternatively, the memory 2502 may 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 code 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 code or instructions, memory 2502 may further store information such as road maps, driving routes, sensor data, etc. 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, computer system 25 may control the driving direction, driving speed, etc. of the vehicle based on data input from sensor system 21, but this is not a limitation of the present 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 may play videos transmitted by the computer system 25 and peripheral devices 23. For specific configurations of the display system 26, please refer to the previous embodiments of the display device; 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 several elements within the vehicle based on different functions to obtain subsystems with corresponding different functions. In practical applications, the vehicle may include more or fewer systems or elements, which is not limited in this application.

[0138] The vehicle in the embodiments 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-powered 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.

[0139] The optical display 10 is not limited to being used in the vehicle 1000 of 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. Referring to FIG. 20 , 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 projection screen.

[0141] The above-mentioned application scenarios are only examples, and the optical display provided herein may further be applied to other possible scenarios, such as medical devices, which are not limited herein.

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

[0143] Additionally, in this specification, sequence numbers such as "first" and "second" of components are merely intended to distinguish between described objects and have no sequential or technical significance. Unless otherwise specified, "connection" 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 locating 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 configured to reflect the imaging light out of the housing, the connecting portion fixedly connected to the first positioning surface; Including, the connecting portion includes a groove, and the housing further includes a positioning post protruding from the first positioning surface, the positioning post passing through the groove; An optical display in which a gap is maintained between the inner wall of the groove and the positioning post.

2. The optical display of claim 1 , 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.

3. The optical display according to claim 2 , 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 the end of the connecting portion.

4. 2. The optical display of claim 1, wherein there are a plurality of connecting portions, 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 opposite each other in a first direction, the third end and the fourth end being arranged opposite each other in a second direction, the first direction being different from the second direction, the connecting portion being provided at each of the first end, the second end, and the third end, and 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.

5. The optical display of claim 1, wherein the optical display further includes 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 passing through the pressing sheet and the positioning post, and the pressing sheet pressing the curved mirror against the housing.

6. The optical display of claim 5 , 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.

7. The optical display according to claim 5 , wherein the connecting component further includes a flexible buffer, the flexible buffer being located between the pressing sheet and the connecting portion.

8. The optical display of claim 1 , wherein the housing has 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 housed within the positioning slot.

9. 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 fixedly connected to the housing and covering the curved mirror.

10. 10. A sheet comprising an optical display according to any one of claims 1 to 9, wherein the optical display is disposed on the sheet.

11. 10. A vehicle comprising an optical display according to any one of claims 1 to 9, said optical display being mounted on said vehicle.

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