Telescopic display

Abstract

The present invention discloses a telescopic image display, which includes a shell, a display panel, an image display unit and a reflecting device. A accommodating cavity is formed inside the shell, and an opening communicating with the accommodating cavity is opened in the shell; the display panel is arranged at the opening; the reflecting device is arranged in the accommodating cavity, and the reflecting device includes a first reflector and a driving component connected in a transmission manner, the driving component is used to drive the first reflector to rotate, and the area through which the first reflector rotates is defined as a reflecting area, and the light emitted by the image display unit can be reflected to the reflecting area through the display panel, and the first reflector can reflect the light reflected by the display panel to the display panel; using the reflecting device to replace the existing large-area concave reflecting mirror can also realize telescopic image display, and the cost is lower than that of the large-area reflecting mirror. Moreover, due to the high-speed rotation of the first reflector, the problem of four-quadrant unevenness that may occur when using a large-area reflecting mirror is avoided.

Description

Technical Field

[0001] The present invention relates to the field of image display technology, and in particular to a telescopic image display. Background Art

[0002] Existing telescopic displays play images through a display. The light emitted by the display is reflected by a beam splitter and then reflected toward a concave reflector. The concave reflector then reflects the light toward the beam splitter and passes through the beam splitter toward the human eye, allowing the human eye to see a magnified and distant virtual image. Currently, the size of existing telescopic displays is generally small. The reason is that the concave reflector used in telescopic displays has high requirements for surface continuity. Concave reflectors with large areas are difficult to manufacture and are expensive.

[0003] In view of this, it is necessary to provide a new telescopic display to solve or at least alleviate the above technical defects. Summary of the Invention

[0004] The main purpose of the present invention is to provide a telescopic display, aiming to solve the technical problem of how to realize a large-size telescopic display at low cost.

[0005] In order to achieve the above object, the present invention provides a telescopic image display, comprising:

[0006] a housing, wherein a receiving cavity is formed inside the housing and an opening is opened in the housing to communicate with the receiving cavity;

[0007] a display panel, the display panel being disposed at the opening;

[0008] an image display unit, the image display unit being disposed in the accommodating cavity;

[0009] A reflecting device is arranged in the accommodating cavity, and the reflecting device includes a first reflector and a driving component that are transmission-connected. The driving component is used to drive the first reflector to rotate, and the area through which the first reflector rotates is defined as the reflecting area. The light emitted by the image display unit can pass through the display panel and be reflected to the reflecting area, and the first reflector can reflect the light reflected by the display panel to the display panel.

[0010] In one embodiment, the first reflector is provided with a reflective surface, and the reflective surfaces at different rotation angles are defined to collectively form a reflective concave surface, and the reflective concave surface is arranged toward the display panel.

[0011] In one embodiment, the refractive index of the edge region of the first reflector is different from the refractive index of the middle region of the first reflector.

[0012] In one embodiment, the first reflector includes a first strip-shaped reflective member, which includes a connecting portion and end portions relatively arranged at both ends of the connecting portion along a first direction. The driving assembly is transmission-connected to the connecting portion so that the rotation center of the strip-shaped reflective member is located at the connecting portion.

[0013] In one embodiment, the rotation center is located at the center of the connecting portion.

[0014] In one embodiment, two side surfaces of the first strip-shaped reflective member that are opposite to each other along the second direction are recessed inwardly, and the first direction and the second direction are perpendicular to each other.

[0015] In one embodiment, the first reflector further includes a second strip-shaped reflective member, and the second strip-shaped reflective member is connected to the connecting portion.

[0016] In one embodiment, there are multiple second strip-shaped reflective members, and the multiple second strip-shaped reflective members are arranged in sequence along the rotation direction of the first strip-shaped reflective member.

[0017] In one embodiment, the reflecting device further includes a second reflector, and the second reflector is stacked with the first reflector, and the driving assembly is capable of driving the first reflector and the second reflector to rotate.

[0018] In one embodiment, the driving assembly includes a motor and a support disk, the rotating shaft of the motor is connected to the support disk, and a light absorbing surface is provided on a side of the support disk facing away from the motor, and the light absorbing surface is connected to the first reflector.

[0019] In one embodiment, the telescopic display further comprises a correcting lens, and the correcting lens is arranged on the light exit side of the image display unit.

[0020] In the above technical solution of the present invention, the first reflector is driven to rotate by the driving component, so that the area through which the first reflector passes forms a reflective area. The first reflector is capable of reflecting the light reflected by the display panel to the display panel. Therefore, using this reflective device to replace the existing large-area concave reflector can also achieve telescopic display, which is lower in cost than a large-area reflector. Moreover, due to the high-speed rotation of the first reflector, the problem of four-quadrant unevenness that may occur when using a large-area reflector is also avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of a telescopic display applied to a shopping mall building according to an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a telescopic display according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of a first strip-shaped reflective member and a supporting plate of a telescopic display according to an embodiment of the present invention;

[0025] Figure 4 for Figure 3 A schematic diagram of the structure of a telescopic display from another perspective;

[0026] Figure 5 Schematic diagram of the structure of the first strip-shaped reflective member and the second strip-shaped reflective member of the telescopic display according to one embodiment of the present invention;

[0027] Figure 6 This is a schematic structural diagram of a first strip-shaped reflective member and a plurality of second strip-shaped reflective members of a telescopic display according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic structural diagram of a telescopic display according to an embodiment of the present invention, in which the rotation center of the first strip-shaped reflective member is arranged at the end;

[0029] Figure 8 A schematic structural diagram of a telescopic display according to an embodiment of the present invention in which a first reflector and a second reflector are stacked;

[0030] Figure 9 This is a schematic structural diagram of a telescopic display according to an embodiment of the present invention, in which a second strip-shaped reflective member is disposed in a groove of a first strip-shaped reflective member;

[0031] Figure 10 This is a schematic structural diagram of a telescopic display according to an embodiment of the present invention, in which a second strip-shaped reflective member passes through a through hole of a first strip-shaped reflective member;

[0032] Figure 11 FIG1 is a partial cross-sectional schematic diagram of a telescopic display according to an embodiment of the present invention.

[0033] Description of Figure Numbers:

[0034]

[0035]

[0036] The realization of the objectives, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that all directional indications (such as up, down, left, and right) in the embodiments of the present invention are only used to explain the direction of the movement in a specific posture (such as the attached Figure 3 The relative position relationship and movement conditions of the components below are shown. If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one of these features.

[0040] Moreover, the technical solutions between the various embodiments of the present invention can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] Currently, the sizes of existing telescopic displays are generally small. The reason is that the concave reflectors used in telescopic displays have high requirements for surface continuity. Concave reflectors with larger areas are difficult and expensive to produce. As for concave reflectors with even larger areas, they are difficult or impossible to produce due to existing processes. This is undoubtedly a technical difficulty that urgently needs to be overcome for scenarios with such usage needs.

[0042] The present invention provides a telescopic display 1. In one embodiment, Figures 1 to 4As shown, the telescopic display 1 includes a shell 11, a display panel 12, an image display unit 13 and a reflection device 14. A accommodating cavity 111 is formed inside the shell 11, and the shell 11 is provided with an opening 112 connected to the accommodating cavity 111; the display panel 12 is arranged at the opening 112; the image display unit 13 is arranged in the accommodating cavity 111; the reflection device 14 is arranged in the accommodating cavity 111, and the reflection device 14 includes a first reflector 141 and a driving component 143 connected by a transmission connection. The driving component 143 is used to drive the first reflector 141 to rotate, and the area through which the first reflector 141 rotates is defined as the reflection area 14114. The light emitted by the image display unit 13 can be reflected to the reflection area 14114 through the display panel 12, and the first reflector 141 can reflect the light reflected by the display panel 12 to the display panel 12.

[0043] The light emitted by the display is reflected by the display panel 12 toward the reflective area 14114. The driving component 143 drives the first reflector 141 to rotate, so that the area through which the first reflector 141 passes forms the reflective area 14114. The first reflector 141 can reflect the light reflected by the display panel 12 to the display panel 12, and finally penetrate the display panel 12 to be received by the human eye A, so that the human eye A can observe a magnified and distant virtual image B. Therefore, using the reflective device 14 instead of the large-area concave reflector can also achieve long-range image display, and the length of the first reflector 141 is less than the length of the large-area concave reflector (the length direction is Figure 3The first reflector 141 can be rotated in a manner that is not suitable for the use case where a large-area concave reflector is required but cannot be produced. The present invention creatively adopts the form of a driving component 143 to drive the first reflector 141 to rotate, and the rotating first reflector 141 forms a reflection area 14114 to replace the large-area concave reflector for reflection, cleverly avoiding the technical solution that is difficult to achieve using a large-area concave reflector, making it possible to achieve the technology of large-area telescopic image display. Moreover, due to the high-speed rotation of the first reflector 141, the problem of four-quadrant unevenness that would occur when using a large-area concave reflector is also avoided. It should be noted that the area of ​​the reflection surface 14113 of the first reflector 141 is smaller than the area of ​​the reflection area 14114. Therefore, the high-speed rotating first reflector 141 is less expensive than a large-area concave reflector with similar reflection effect. It should also be noted that a portion of the light emitted by the image display unit 13 can pass through the display panel 12 to form stray light, and the other portion will be reflected by the display panel 12 toward the first reflector 141, and then the first reflector 141 will reflect the light. The reflected light passes through the display panel 12 and can be received by the human eye, so that the human eye A can see a magnified and distanced virtual image B through the display panel 12, where the display panel 12 can be a semi-transparent and semi-reflective plate or an optical structure that can produce the same effect.

[0044] According to one embodiment of the present invention, a telescopic display 1 can be installed on a wall of a shopping mall. Specifically, the telescopic display 1 further includes a mounting wall 23, which encloses a mounting cavity 24. At least a portion of the main body of the housing 11 is disposed within the mounting cavity 24. The housing 11 can be disposed near the top of the mounting cavity 24 and connected to the mounting wall 23. The mounting wall 23 defines a viewing port 25, and the display panel 12 is disposed at the viewing port 25. The light-emitting surface of the display panel 12 faces outward, that is, away from the mounting cavity 24, so that a person's eye A located outside the shopping mall can observe a magnified and distant virtual image B through the display panel 12. It should be noted that the mounting wall 23 can be the outer wall of the shopping mall or a wall within the shopping mall, and the person's eye A can observe a magnified and distant virtual image B through the display panel 12. For example, if the mounting wall 23 is the outer wall of a shopping mall, the virtual image can be seen from a great distance and the reflection area 14114 is large, allowing people outside the mall to see an oversized virtual image, giving them a visually stunning experience. This satisfies the need for a large-area concave reflector but where large-area concave reflectors are unavailable. If the mounting wall 23 is a wall inside the mall, the oversized virtual image can be seen from inside the mall. Furthermore, the mall can also use this method to transform the telescopic display 1 into a telescopic skylight advertising machine, projecting large-scale virtual image advertisements in front of customers.

[0045] Of course, the shell 11 of the telescopic display 1 can also be directly installed on the wall of a shopping mall building. In this case, a mounting cavity 23 is formed on the wall, and at least part of the main body of the shell 11 is arranged in the mounting cavity 24. The shell 11 can be arranged near the top of the mounting cavity 24. The shell 11 is connected to the mounting wall 23. A viewing port 25 is opened on the wall of the shopping mall building, and the display panel 12 is arranged at the viewing port 25. The light-emitting surface of the display panel 12 is arranged to face outward, that is, it is arranged away from the mounting cavity 24, so that the human eye A can observe a magnified and distant virtual image B through the display panel 12.

[0046] In addition, a mounting frame may be provided in the shopping mall building, the outer shell 11 is connected to the mounting frame, the mounting frame forms a mounting cavity 23, at least part of the main body of the outer shell 11 is provided in the mounting cavity 24, the outer shell 11 may be provided near the top of the mounting cavity 24, the bracket is provided with a viewing port 25, the display panel 12 is provided at the viewing port 25, the light emitting surface of the display panel 12 is provided facing outward, that is, away from the mounting cavity 24, so that the human eye A located in the shopping mall can observe an enlarged and distant virtual image B through the display panel 12, thereby realizing the function of being able to see a large-area display image in the shopping mall building.

[0047] According to another embodiment of the present invention, Figure 11As shown, the image display unit 13 is one of LCD, OLED, and MLED. The image display unit 13 is slidably matched with the shell 11. The shell 11 is provided with an outlet 21 for the image display unit 13 to enter and exit, so that the image display unit 13 can be pulled out from the shell 11 through the outlet and separated from the shell 11; the image display unit 13 can be used as a display tablet alone, which is also convenient for the maintenance and replacement of the image display unit 13. A charger 22 for powering the image display unit 13 is provided inside the shell 11. When the image display unit 13 is assembled, the charger 22 can power the image display unit 13, wherein the charging method of the charger 22 can be charging through a magnetic interface or wireless charging through electromagnetic induction.

[0048] In one embodiment, the first reflector 141 is provided with a reflective surface 14113, and the reflective surfaces 14113 at different rotation angles are defined to collectively form a reflective concave surface, which is disposed toward the display panel 12. The area of ​​the reflective surface 14113 is smaller than the area of ​​the reflective concave surface, and the reflective surface 14113 is only a portion of the reflective concave surface. The reflective concave surface can be approximately regarded as the reflective surface 14113 of a large-area reflector. Therefore, the size of the first reflector 141 is also smaller than the large-area reflector, so the reflective device 14 is less expensive than a large-area reflector. It should be noted that the reflective device 14 is simpler to manufacture than a large-area reflector because the first reflector 141 is smaller in size than a large-area reflector and does not require as high continuity as a large-area reflector. Therefore, it is simpler to manufacture than a large-area reflector.

[0049] In one embodiment, the diopter of the edge region of the first reflector 141 is different from the diopter of the central region of the first reflector 141 to reduce distortion of the image reflected by the first reflector 141. Whether the diopter of the edge region of the first reflector 141 is set to be larger or smaller than the diopter of the central region of the first reflector 141 is primarily determined by the distorted shape of the image reflected by the first reflector 141. By setting the diopter of the edge region of the first reflector 141 different from the diopter of the central region of the first reflector 141, the distortion of the reflected image is eliminated, providing a better viewing experience for the user. It should be noted that the difference in diopter of the edge region of the first reflector 141 from the diopter of the central region of the first reflector 141 can also be used to reduce distortion of the image displayed by the image display unit 13, which causes distortion of the image perceived by the human eye.

[0050] In one embodiment, the first reflector 141 includes a first strip-shaped reflector 1411, which includes a connecting portion 14111 and end portions 14112 disposed at opposite ends of the connecting portion 14111 along a first direction. The driving assembly 143 is in transmission connection with the connecting portion 14111 so that the rotation center of the strip-shaped reflector is located at the connecting portion 14111. The driving assembly 143 drives the connecting portion 14111 to rotate, thereby driving the entire first reflector 141 to rotate. Compared with setting the rotation center at the end portion 14112, the rotation stability is higher. It should be noted that the first direction is Figure 3 The up and down directions shown are Figure 3 Left and right directions shown.

[0051] In one embodiment, the rotation center is located at the center of the connecting portion 14111. By setting the rotation center at the center of the connecting portion 14111, the stability of the rotation of the first strip-shaped reflective member 1411 is further improved.

[0052] like Figure 7 As shown, according to one embodiment of the present invention, the rotation center can also be set at the end 14112 of the first strip-shaped reflective member 1411. Compared with setting the rotation center at the connection portion 14111, this design can replace a concave reflector with a larger area. That is, when the rotation center is set at the end 14112 of the first strip-shaped reflective member 1411, the reflection area 14114 through which the first strip-shaped reflective member 1411 rotates is larger than when the rotation center is set at the connection portion 14111. It should be noted that the driving assembly 143 includes a motor 1431 and a support disk 1432. The rotating shaft 17 of the motor 1431 is connected to the support disk 1432, and the support disk 1432 is connected to the first reflector 141. The stability of the rotation of the first strip-shaped reflective member 1411 can be increased by providing a counterweight 19 on the support disk 1432. The surface of the counterweight 19 can be provided with a light-absorbing layer to reduce the impact on the display effect of the telescopic display 1.

[0053] like Figure 2 and Figure 3 As shown, in one embodiment, the two side surfaces of the first strip-shaped reflector 1411 that are arranged opposite to each other along the second direction are recessed inwardly, and the first and second directions are perpendicular to each other. The purpose of configuring the two side surfaces of the first strip-shaped reflector 1411 to be biconcave is to make the brightness of the image more uniform. It should be noted that if the width of the first strip-shaped reflector 1411 along the first direction does not change, the image reflected by the first strip-shaped reflector 1411 when rotated will appear bright in the middle and dark at the edges, resulting in uneven brightness distribution of the image. By configuring the two side surfaces of the first strip-shaped reflector 1411 that are arranged opposite to each other along the second direction to be recessed inwardly, the amount of reflection in the middle area is reduced, thereby making the brightness distribution of the reflected image more uniform and achieving equal brightness projection.

[0054] like Figure 5 and Figure 6 As shown, in one embodiment, the first reflector 141 further includes a second strip-shaped reflective member 1412, which is connected to the connecting portion 14111. The provision of the second strip-shaped reflector increases the reflective surface area 14113, thereby helping to improve the display effect of the reflected image. It should be noted that the second strip-shaped reflective member 1412 can be detachably connected or fixedly connected to the first strip-shaped reflective member 1411.

[0055] like Figure 9 As shown, according to one embodiment of the present invention, a groove 20 for accommodating the second strip-shaped reflective member 1412 is provided on the side of the first strip-shaped reflective member 1411 facing the display panel 12 , and the first strip-shaped reflective member 1411 and the second strip-shaped reflective member 1412 are bonded together by an adhesive layer.

[0056] like Figure 10 As shown, according to another embodiment of the present invention, the first strip-shaped reflective member 1411 is provided with a through hole 18 for the second strip-shaped reflective member 1412 to pass through, and the first strip-shaped reflective member 1411 and the second strip-shaped reflective member 1412 are bonded together by an adhesive layer.

[0057] According to another embodiment of the present invention, the second strip-shaped reflective member 1412 is connected to any side wall of the first strip-shaped reflective member 1411 set along the second direction. The first strip-shaped reflective member 1411 and the second strip-shaped reflective member 1412 can be engaged through a boss and a slot, or can be bonded through an adhesive layer.

[0058] In one embodiment, there are multiple second strip-shaped reflective members 1412, and the multiple second strip-shaped reflective members 1412 are arranged sequentially along the rotation direction of the first strip-shaped reflective member 1411. The provision of multiple second strip-shaped reflective members further enhances the display effect of the reflected image. It should be noted that the structure of the second strip-shaped reflective members 1412 is the same as that of the first strip-shaped reflective member 1411.

[0059] In one embodiment, the reflective device 14 further includes a second reflector 142, which is stacked with the first reflector 141. The driving assembly 143 is capable of driving the first and second reflectors 141, 142 to rotate. The provision of the second strip-shaped reflector increases the reflective surface area 14113, thereby improving the display effect of the reflected image. It should be noted that both the first and second reflectors 141, 142 can be concave reflectors.

[0060] According to an embodiment of the present invention, the second reflector 142 is bonded above the first reflector 141 , and the second reflector 142 and the first reflector 141 are staggered along the rotation direction of the first reflector 141 .

[0061] like Figure 8 As shown, according to another embodiment of the present invention, the telescopic display 1 further includes a rotating shaft 17, which passes through the stacked first reflector 141 and the second reflector 142 and is connected to the driving assembly 143. The driving assembly 143 drives the first reflector 141 and the second reflector 142 to rotate through the rotating shaft 17.

[0062] In one embodiment, the drive assembly 143 includes a motor 1431 and a support plate 1432. The rotating shaft 17 of the motor 1431 is connected to the support plate 1432. A light-absorbing surface 14321 is provided on the side of the support plate 1432 facing away from the motor 1431. The light-absorbing surface 14321 is connected to the first reflector 141. The provision of the light-absorbing surface 14321 on the side of the support plate 1432 facing away from the motor 1431 is intended to prevent stray light from interfering with the image viewed by the user. It should be noted that the light-absorbing surface 14321 is formed by coating the support plate black.

[0063] In one embodiment, the telescopic display 1 further includes a correction lens 15, which is disposed on the light-emitting side of the image display unit 13. The addition of the correction lens 15 corrects the distortion of the image reflected by the reflective device 14, effectively improving the pixel utilization of the image display unit 13 compared to digital correction performed by the display.

[0064] According to an embodiment of the present invention, the telescopic display 1 further includes a logic component 16 , which is communicatively connected to the display via a flat cable. The logic component 16 is also communicatively connected to the motor 1431 via another flat cable.

[0065] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields within the concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A telescopic display, characterized in that: include: a housing, wherein a receiving cavity is formed inside the housing and an opening is opened in the housing to communicate with the receiving cavity; a display panel, the display panel being disposed at the opening; an image display unit, the image display unit being disposed in the accommodating cavity; a reflective device disposed in the accommodating cavity, the reflective device comprising a first reflector and a driving assembly in transmission connection, the driving assembly being configured to drive the first reflector to rotate, the area through which the first reflector rotates being defined as a reflective area, light emitted by the image display unit being capable of passing through the display panel and being reflected to the reflective area, and the first reflector being capable of reflecting light reflected by the display panel to the display panel; The first reflector is provided with a reflective surface, and the reflective surfaces at different rotation angles are defined to jointly form a reflective concave surface, and the reflective concave surface is arranged toward the display panel.

2. The telescopic display according to claim 1, wherein: The first reflector includes a first strip-shaped reflective member, which includes a connecting portion and end portions relatively arranged at both ends of the connecting portion along a first direction. The driving assembly is transmission-connected to the connecting portion so that the rotation center of the strip-shaped reflective member is located at the connecting portion.

3. The telescopic display according to claim 2, wherein: The rotation center is located at the center of the connecting portion.

4. The telescopic display according to claim 2, wherein: The two side surfaces of the first strip-shaped reflective member that are opposite to each other along the second direction are recessed inwardly, and the first direction and the second direction are perpendicular to each other.

5. The telescopic display according to claim 2, wherein: The first reflector further includes a second strip-shaped reflective member, and the second strip-shaped reflective member is connected to the connecting portion.

6. The telescopic display according to claim 5, characterized in that There are multiple second strip-shaped reflective members, and the multiple second strip-shaped reflective members are arranged in sequence along the rotation direction of the first strip-shaped reflective member.

7. The telescopic display according to claim 1, wherein: The reflecting device further includes a second reflector, and the second reflector is stacked with the first reflector. The driving assembly can drive the first reflector and the second reflector to rotate.

8. The telescopic display according to any one of claims 1 to 7, characterized in that: The refractive power of the edge area of ​​the first reflector is different from the refractive power of the middle area of ​​the first reflector.

9. The telescopic display according to any one of claims 1 to 7, characterized in that The driving assembly includes a motor and a support plate, the rotating shaft of the motor is connected to the support plate, and a light absorbing surface is provided on a side of the support plate facing away from the motor, and the light absorbing surface is connected to the first reflector; and / or The telescopic display further includes a correcting lens, which is arranged on the light-emitting side of the image display unit.

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