Telescopic display device

Abstract

The present invention discloses a telescopic image display device, belonging to the field of telescopic image display, comprising a housing, an optical component, a first image generating unit, a second image generating unit, and a reflective element. The housing has a housing formed therein, and an opening communicating with the housing is formed therein, and the optical component is mounted in the opening. The first image generating unit and the reflective element are both disposed within the housing, and the first image generating unit and the second image generating unit are disposed on opposite sides of the optical component. This invention has the advantage of being able to produce a 3D image effect.

Description

Technical Field

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

[0002] A telescopic device is a special optical device that uses free-form surface technology to extend nearby objects into the distance, creating a sensation of telescopic vision and a magnified virtual image. However, the images currently displayed are two-dimensional and cannot produce three-dimensional effects.

[0003] Therefore, it is necessary to provide a new telescopic image display device to solve the above technical problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a telescopic image display device, aiming to solve the problem in the prior art that three-dimensional image effects cannot be displayed.

[0005] To achieve the above objectives, the present invention provides a telescopic image display device, comprising a housing, an optical component, a first image generating unit, a second image generating unit, and a reflective element. The housing has an accommodating cavity formed therein, the housing has an opening communicating with the accommodating cavity, and the optical component is mounted in the opening. The first image generating unit and the reflective element are both disposed in the accommodating cavity, and the first image generating unit and the second image generating unit are disposed on opposite sides of the optical component.

[0006] The first image generating unit is used to emit a first polarized light in a first polarization direction and the first polarized light is reflected by the optical component and then incident on the reflector; the second image generating unit is used to emit a second polarized light in a second polarization direction into the optical component and then reflected by the optical component and then incident on the reflector, and the first polarized light and the second polarized light are reflected by the reflector and then emitted through the optical component.

[0007] In some embodiments, the optical component includes a substrate and a semi-transmissive and semi-reflective layer, wherein the semi-transmissive and semi-reflective layer is disposed on a side of the substrate facing the first image generating unit; a grating reflective unit is disposed within the substrate, and a reflective surface is formed on a side of the grating reflective unit facing the second image generating unit;

[0008] The first polarized light emitted by the first image generating unit is reflected by the semi-transmissive and semi-reflective layer and then incident on the reflective element. The second polarized light emitted by the second image generating unit enters the substrate and is reflected by the reflective surface and then incident on the reflective element. The first polarized light and the second polarized light are reflected by the reflective element and then emitted through the optical component.

[0009] In some embodiments, the gate reflector unit further includes an absorption surface facing the first image generating unit.

[0010] In some embodiments, the plurality of the reflector units on the cross section of each optical component form a reflector column, and the plurality of the reflector units in each reflector column are spaced apart.

[0011] In some embodiments, the gratings on each cross section of the optical component are arranged in reverse rows and staggered.

[0012] In some embodiments, an anti-reflection film is provided on a side of the substrate facing the second image generating unit.

[0013] In some embodiments, the first image generating unit includes a first display screen and a first polarizer, the second image generating unit includes a second display screen and a second polarizer, the polarization directions of the first polarizer and the second polarizer are perpendicular, and the first polarization direction and the second polarization direction are perpendicular to each other.

[0014] In some embodiments, an adjustment lens and an adjustment component are further provided in the accommodating cavity. The first polarized light and the second polarized light are reflected by the optical component and then pass through the adjustment lens to be incident on the reflector. After being reflected by the reflector, they pass through the adjustment lens and are emitted from the optical component. The adjustment component is connected to the adjustment lens to adjust the position of the virtual image by adjusting the position of the adjustment lens.

[0015] In some embodiments, the reflector includes a supporting area and a reflecting area, the supporting area is formed with a mounting hole, the reflecting area is arranged in the mounting hole, and a control circuit layer is provided on a side of the supporting area away from the optical component.

[0016] In some embodiments, the first image generating unit and / or the second image generating unit includes a display screen, a slot is provided on the housing, a sliding frame is slidably provided on the slot, the display screen is detachably mounted on the sliding frame, and the sliding frame is provided with a charging interface electrically connected to the display screen.

[0017] In the technical solution of the present invention, the first image generation unit and the second image generation unit are respectively arranged on opposite sides of the optical component. The first image generation unit is in the accommodating cavity. The first image generation unit emits a first polarized light in a first polarization direction. The first polarized light is incident on the first surface of the optical component and is reflected by the optical component. The reflected first polarized light is incident on the reflector. The second polarized light emitted by the second image generation unit passes through the second surface of the optical component and is incident on the inside of the optical component. After being reflected by the optical component, it is emitted from the first surface and is incident on the reflector. At this time, the reflected first polarized light and the second polarized light are basically merged or converged into a beam of light and are incident on the reflector. It should be noted that the first surface here refers to the side of the optical component facing the accommodating cavity, that is, the side facing the first image generation unit, and the second surface refers to the side of the optical component away from the accommodating cavity, that is, the side facing the second image generation unit. The fusion or convergence here means that the propagation paths of the two polarized light rays are the same, not that they are combined into one light ray. The basic fusion or convergence into one beam of light means that the propagation paths of the two light rays are the same or there is a small deviation. The first polarized light ray and the second polarized light ray incident on the reflector are reflected by the reflector and pass through the first surface and the second surface of the optical component in sequence, and are emitted in a direction away from the accommodation cavity to be received by the human eye. In addition, the polarization direction of the first polarized light ray is different from the polarization direction of the second polarized light ray. In a specific practical application, refer to Figure 1 If a person's eyes are positioned at point A and polarizers with different polarization directions are worn on each eye, for example, polarizers with orthogonal polarization directions, such as a polarizer with P polarization on the left eye and a polarizer with S polarization on the right eye, the two eyes will see two virtual images of the first polarization light and the second polarization light, namely virtual image S and virtual image P, respectively, at a distant point B, creating a 3D image effect. Combined with the telescopic display function of a telescopic display device, this allows for a viewing experience of a 3D giant screen from afar. This invention has the advantage of being able to produce a 3D image effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a schematic structural diagram of a telescopic image display device according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of optical components of a telescopic image display device according to an embodiment of the present invention;

[0021] Figure 3A schematic structural diagram of a grid reflection unit of a telescopic display device according to an embodiment of the present invention;

[0022] Figure 4 A schematic structural diagram of a telescopic image display device according to another embodiment of the present invention;

[0023] Figure 5 A schematic structural diagram of a reflective component of a telescopic image display device according to another embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of a telescopic image display device according to another embodiment of the present invention;

[0025] Figure 7 This is a schematic structural diagram of an adjustment lens and an adjustment assembly of a telescopic image display device according to another embodiment of the present invention;

[0026] Figure 8 This is a structural schematic diagram of a telescopic image display device according to another embodiment of the present invention;

[0027] Figure 9 FIG. 1 is a partial structural diagram of a telescopic image display device according to another embodiment of the present invention.

[0028] Description of Figure Numbers:

[0029] 100. Telescopic display device; 1. Housing; 2. Accommodating cavity; 3. Optical component; 31. Substrate; 311. First surface; 312. Second surface; 32. Semi-transmissive and semi-reflective layer; 33. Grid reflection unit; 331. Reflection surface; 332. Absorption surface; 34. Anti-reflection and anti-reflection film; 4. First image generating unit; 41. First display screen; 42. First polarizer; 5. Second image generating unit; 51. Second display screen; 52. Second polarizer; 6. Window plate; 7. Reflector; 71. Support area; 72. Reflection area; 8. Adjustment component; 81. Drive component; 82. Drive screw; 83. Drive screw sleeve; 9. Limiting component; 91. Limiting slide rod; 92. Limiting slide sleeve; 10. Adjustment lens; 12. Control component; 13. Notch; 14. Sliding frame; 15. Charging port; 16. Button; 17. Control circuit layer.

[0030] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0031] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] 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 being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0034] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. 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.

[0036] In the related art, a telescopic image display device can display a magnified image at a distance, but the image is a flat image without a three-dimensional effect.

[0037] In view of this, the present application provides a telescopic image display device.

[0038] Reference Figure 1 and Figure 2 The present invention provides a telescopic image display device 100, comprising a housing 1, an optical component 3, a first image generating unit 4, a second image generating unit 5, and a reflective element 7. The housing 1 defines a receiving cavity 2. The housing 1 defines an opening communicating with the receiving cavity 2, and the optical component 3 is mounted in the opening. The first image generating unit 4 and the reflective element 7 are both disposed within the receiving cavity 2, and the first image generating unit 4 and the second image generating unit 5 are disposed on opposite sides of the optical component 3.

[0039] The first image generating unit 4 is used to emit a first polarized light in a first polarization direction, which is reflected by the optical component 3 and then incident on the reflector 7; the second image generating unit 5 is used to emit a second polarized light in a second polarization direction, which enters the optical component 3 and then reflects from the optical component 3 and then incident on the reflector 7. The first polarized light and the second polarized light are reflected by the reflector 7 and then pass through the optical component 3 and are emitted, and are received by the human eye at point A.

[0040] The housing 1 refers to the housing of the telescopic display device 100. The accommodating cavity 2 is a cavity formed in the housing 1. The opening is a through hole on the housing that is connected to the accommodating cavity 2. The optical component 3 is installed on the opening and can close the opening. The optical component 3 has a semi-transparent and semi-reflective property, which allows part of the light to pass through and reflects part of the light. The first image generating unit 4 and the second image generating unit 5 refer to light sources for emitting light, and the light includes image information. For example, the first image generating unit 4 and the second image generating unit 5 can be display screens. The second image generating unit 5 can also be installed on the housing 1. The first polarized light is as Figure 1 or Figure 2 As shown in L1, the second polarized light is as follows Figure 1 or Figure 2 As shown in L2, the horizontal direction is as Figure 1 As shown by the arrow H in the middle.

[0041] In the above embodiment, the first image generating unit 4 and the second image generating unit 5 are disposed on opposite sides of the optical component 3. Specifically, the first image generating unit 4 can be within the accommodating cavity 2, and the second image generating unit 5 can be disposed outside the accommodating cavity. The first image generating unit 4 emits a first polarized light beam in a first polarization direction. The first polarized light beam is incident on the first surface 311 of the optical component 3 and is reflected by the optical component 3. The reflected first polarized light beam is incident on the reflector 7. The second polarized light beam emitted by the second image generating unit 5 passes through the second surface 312 of the optical component 3 and is incident on the interior of the optical component 3. After being reflected by the optical component 3, it is emitted through the first surface 311 and is incident on the reflector 7. At this time, the reflected first polarized light beam and the second polarized light beam are essentially merged or converged into a beam of light and are incident on the reflector 7. It should be noted that the first surface 311 here refers to the side of the optical component 3 facing the accommodating cavity 2, that is, the side facing the first image generating unit 4, and the second surface 312 refers to the side of the optical component 3 facing away from the accommodating cavity 2, that is, the side facing the second image generating unit 5. The fusion or convergence here means that the propagation paths of the two polarized light rays are the same, not that they are combined into one light ray. The basic fusion or convergence into one light ray means that the propagation paths of the two light rays are the same or there is a small deviation. The first polarized light ray and the second polarized light ray incident on the reflector 7 are reflected by the reflector 7 and pass through the first surface 311 and the second surface 312 of the optical component 3 in sequence, and are emitted in a direction away from the accommodating cavity 2 to be received by the human eye. In addition, the polarization direction of the first polarized light ray is different from the polarization direction of the second polarized light ray. In a specific practical application, refer to Figure 1 If a person's eye is at point A and polarizers with different polarization directions are worn on each eye, for example, polarizers with orthogonal directions, such as a polarizer with P polarization on the left eye and a polarizer with S polarization on the right eye, with the first polarized light being S polarization and the second polarized light being P polarization, then the two eyes will see two virtual images of the first polarized light and the second polarized light, namely virtual image S and virtual image P, respectively, at a distant point B, creating a 3D image effect. Combined with the telescopic display function of the telescopic image display device 100, this provides a viewing experience of a 3D giant screen from afar. This embodiment has the advantage of being able to produce a 3D image effect.

[0042] Reference Figure 1 and Figure 2In some embodiments, the optical component 3 includes a substrate 31 and a semi-transparent and semi-reflective layer 32, and the semi-transparent and semi-reflective layer 32 is arranged on the side of the substrate 31 facing the first image generating unit 4; a grid reflective unit 33 is arranged in the substrate 31, and a reflective surface 331 is formed on the side of the grid reflective unit 33 facing the second image generating unit 5; the first polarized light emitted by the first image generating unit 4 is reflected by the semi-transparent and semi-reflective layer 32 and then incident on the reflective element 7, and the second polarized light emitted by the second image generating unit 5 enters the substrate 31 and is reflected by the reflective surface 331 and then incident on the reflective element 7. The first polarized light and the second polarized light are reflected by the reflective element 7 and then emitted through the optical component 3.

[0043] Specifically, the substrate 31 is a transparent plate. The side of the substrate 31 facing the first image generating unit 4, that is, the first surface 311, serves as the mounting surface or bonding surface of the semi-transparent and semi-reflective layer 32. The semi-transparent and semi-reflective layer 32 is used to reflect the first polarized light emitted from the first image generating unit 4 and incident on the reflective element 7. The light emitted from the second image generating unit 5 passes through the second surface 312 and is reflected by the reflective surface 331 of the grid reflective unit 33 disposed within the substrate 31. After being reflected, it passes through the second surface 312 of the substrate 31 and the semi-transparent and semi-reflective layer 32 and is incident on the reflective element 7. At this time, the first polarized light and the second polarized light that have passed through the optical component 3 merge into a single beam of light and are emitted toward the reflective element 7. After being reflected by the reflective element 7, the beam passes through the optical component 3 and is incident on the human eye. The human eye can see a distant virtual image along the reverse extension line of the light. This embodiment provides a transflective layer 32 on the optical member 3 and a grating reflector unit 33 within the optical member 3, so that polarized light incident from different sides of the optical member 3 can be merged and directed toward the reflector 7, achieving a telescopic display effect and a 3D stereoscopic display effect. Specifically, the transflective layer 32 can be a transflective plate.

[0044] Reference Figure 2 and Figure 3 In some embodiments, the gate reflector unit 33 further includes an absorption surface 332 facing the first image generating unit 4 .

[0045] Since the semi-transparent and semi-reflective layer 32 has the property of transmitting some light, it is possible that some or a small amount of light incident on the optical component 3 from the first image generating unit 4 may pass through the semi-transparent and semi-reflective layer 32. These light rays may be emitted through the substrate 31. If received by the human eye, it will affect the visual effect and cause image blur or ghosting. In this case, an absorption surface 332 facing the first image generating unit 4 is provided on the grid reflector unit 33 to absorb the light rays passing through the semi-transparent and semi-reflective layer 32, thereby absorbing unnecessary light rays. Figure 2 The ineffective light directed toward the absorption surface 332 as shown by W in the middle improves the clarity of the image and enhances the visual experience.

[0046] Reference Figure 2 In some embodiments, the plurality of reflective elements 33 on the cross section of each optical component 3 form a reflective column, and the plurality of reflective elements 33 in each reflective column are arranged at intervals. The cross section direction here is along Figure 2 The cross section here refers to the cross section shown in the figure. Figure 2 The figure shows a grid reflector column. This cross section has multiple grid reflector units 33 spaced apart. For ease of description, we refer to the grid reflector units 33 on a cross section as a grid reflector column. The multiple grid reflector units 33 in each grid reflector column are spaced apart to provide space for light to enter and exit. In another specific embodiment, the grid reflector units 33 in each grid reflector column are evenly spaced apart.

[0047] In some embodiments, the grid reflection columns on each cross section of the optical component 3 are staggered. As previously mentioned, each cross section has a grid reflection column, so each cross section will have multiple grid reflection columns. These grid reflection columns are not all aligned. In other words, the grid reflection units 33 in each grid reflection column are not all aligned in a straight line, but are staggered. This is mainly to avoid double-slit reflection and the generation of double-slit fringes.

[0048] In some embodiments, the inclination angle θ of the optical component 3 with the horizontal plane is 30° to 60°. This angle setting can reduce dust falling onto the light-emitting surface, reduce dust accumulation, and thereby reduce the wiping frequency, thereby avoiding damage to the telescopic display device 100. The first polarized light emitted by the first image generating unit 4 is emitted vertically upward, and the second light emitted by the second image generating unit 5 is emitted vertically downward. Setting the inclination angle θ of the optical component 3 with the horizontal plane to 30° to 60° is conducive to the fusion of the two polarized light beams into one beam of light that is emitted toward the reflector 7. After being reflected by the reflector 7, it passes through the optical component 3, achieving the fusion of different polarized images, so that the human eye can see the effect of a 3D stereoscopic image when wearing polarized glasses.

[0049] Reference Figure 2 In some embodiments, the setting direction of the grid reflection unit 33 is perpendicular to the first surface 311 and the second surface 312 of the substrate 31, and the grid reflection units 33 in each grid reflection column are arranged in parallel. In order to facilitate the adjustment of the two virtual images to overlap as much as possible, the thickness of the substrate 31 can be appropriately selected to be thinner. Specifically, the thickness of the substrate 31 is less than 0.5mm. Here, the vertical spacing between two adjacent grid reflection units 33 in the same grid reflection column is defined as the horizontal spacing h, and the horizontal spacing is set to be greater than the height of the pixel. For example, if the pixel height is 0.1mm, h can be set to ≥ 0.1mm. In this way, the image observed is clearer. The lower viewing angle is as follows Figure 2 As shown in α, it represents the viewing angle range of the image that the human eye can see from below the horizontal line at A.

[0050] In some embodiments, the accommodating cavity 2 is actually formed by the outer shell 1 and the optical component 3. In order to prevent excess light from entering the human eye during the reflection process and affecting the visual effect, a light-absorbing layer can be set on the inner wall surface of the outer shell 1 facing the accommodating cavity 2. The light-absorbing layer can be a black coating to absorb excess light in the accommodating cavity 2.

[0051] Reference Figure 2 In some embodiments, an anti-reflection film 34 is provided on the side of the substrate 31 facing the second image generating unit 5. The anti-reflection film 34 is used to enhance the transmittance of light and reduce the reflectivity of light. This allows more light emitted from the second image generating unit 5 to pass through the second surface 312, and allows more of the first polarized light and the second polarized light reflected from the reflector 7 to pass through the substrate 31, thereby improving light utilization.

[0052] Reference Figure 1 In some embodiments, the first image generating unit 4 includes a first display screen 41 and a first polarizer 42, and the second image generating unit 5 includes a second display screen 51 and a second polarizer 52. The polarization directions of the first polarizer 42 and the second polarizer 52 are perpendicular, and the first polarization direction and the second polarization direction are mutually perpendicular. The first image generating unit 4 and the second image generating unit 5 can be image generating units that can directly emit polarized light. The first polarization direction and the second polarization direction are mutually perpendicular, so that the first polarization direction of the first polarized light and the second polarization direction of the second polarized light passing through the first polarizer 42 and the second polarizer 52, respectively, are mutually perpendicular. In a specific embodiment, the first polarized light is S-polarized light and the second polarized light is P-polarized light. In this way, the observer at position A only needs to wear conventional P-polarizer and S-polarizer to observe a distant 3D virtual image.

[0053] Reference Figure 4 and Figure 5In some embodiments, the reflector 7 includes a supporting area 71 and a reflecting area 72. The supporting area 71 is formed with a mounting hole, and the reflecting area 72 is disposed within the mounting hole. The control circuit layer 17 is disposed on the side of the supporting area 71 facing away from the optical component 3. The reflector 7 can be a curved imaging mirror, including a reflecting area 72. Light emitted from the display screen is reflected onto the reflecting area 72 by the semi-transparent and semi-reflective layer 32. Specifically, the reflecting area 72 is a curved reflecting area 72. The reflecting area 72 is made of glass and is coated with a reflective coating for reflecting light. The control circuit layer 17 is disposed on the surface of the supporting area 71 away from the display screen. The control circuit layer 17 is layered and disposed on the side of the support region 71 facing away from the optical member 3, replacing the control assembly 12 in the related art. In other words, by disposing the control circuit layer 17 in the support region 71, the control assembly 12 can be eliminated. This not only reduces production costs and eliminates the need to assemble the control assembly 12, but also improves assembly efficiency. It also reduces the overall size of the telescopic display device 100, allowing it to be installed in small spaces, such as the headrest area of ​​a vehicle. The integrated design of the reflector 7 and the control circuit layer 17 reduces vibrations of the control circuit layer 17 during vehicle operation, resolving the issue of unstable installation caused by the separate installation of the control assembly 12 (PCB) in the related art. Furthermore, the control circuit layer 17 is positioned on the side of the support region 71 facing away from the optical member 3, that is, on the side of the support region 71 facing away from the image generating unit. The reflector 7 acts as a heat insulator, isolating the control circuit layer 17 from the environment surrounding the image generating unit, thereby preventing the heat generated by the image generating unit from affecting the stability of the control circuit layer 17. It is important to note that when positioning the control circuit layer 17 on the support region 71, it must be positioned away from the reflective region 72 to prevent damage to the thinner portion of the curved reflective region 72 during drive circuit fabrication.

[0054] In a specific embodiment, the fabrication process of the control circuit layer 17 is similar to that of a thin film transistor (TFT). For example, a conductive film can be deposited on the surface of the reflective region 72, a photoresist layer can be coated on the conductive film, and then a suitable mask is selected for exposure based on the desired pattern or shape of the control circuit layer 17. After exposure, etching can be performed, either dry etching or wet etching. Finally, the remaining photoresist is removed by heat curing, thereby obtaining the desired control circuit layer 17. In a more specific embodiment, a protective film can be deposited on the reflective region 72, either by physical vapor deposition or chemical vapor deposition.

[0055] Reference Figure 6In some embodiments, the housing 1 is further provided with a button 16 for controlling the opening and closing of the optical member 3. The control circuit layer 17 or the control assembly 12 is respectively connected to the button 16, the first image generating unit 4, and the second image generating unit 5 via cables.

[0056] Reference Figure 6 and Figure 7 In some embodiments, an adjustment lens 10 and an adjustment assembly 8 are further disposed within the accommodating cavity 2. The first and second polarized light rays, after being reflected by the optical component 3, pass through the adjustment lens 10 and are incident on the reflector 7. After being reflected by the reflector 7, they pass through the adjustment lens 10 and are emitted from the optical component 3. The adjustment assembly 8 is connected to the adjustment lens 10 so that the position of the virtual image can be adjusted by adjusting the position of the adjustment lens 10. An adjustment lens 10 is also disposed within the accommodating cavity 22. The first and second polarized light rays, after being reflected by the optical component 33, pass through the adjustment lens 10 and are incident on the reflector 7. After being reflected by the reflector 7, they pass through the adjustment lens 10 and are emitted from the optical component 33. By disposing the adjustment lens 10 between the optical component 33 and the reflector 7, this embodiment can improve the refractive power, thereby reducing the thickness of the optical system and thus reducing the volume of the telescopic image display device 100. Furthermore, an adjustment assembly 8 can be provided, connected to the adjustment lens 10, to adjust the position of the adjustment lens 10. In this embodiment, the adjustment assembly 8 is provided to adjust the position of the adjustment lens 10. Adjustment of the lens position can adjust the position of the virtual image. Specifically, the virtual image position can be adjusted within a range of 0.8m to 10m from the human eye. That is, the position of the virtual image P and the virtual image S can be adjusted to facilitate effective reading of information for people with different degrees of myopia. By slightly exceeding the limit of the image that can be clearly seen by myopic users, pseudomyopia can be corrected through microstimulation and true myopia can be controlled. Specifically, the position of the adjustment lens 10 can be adjusted along the central axis of the adjustment lens 10.

[0057] Reference Figure 7In some embodiments, the adjustment assembly 8 includes a driving member 81, a driving screw 82 connected to the driving member 81, and a driving screw sleeve 83 mounted on the driving screw 82. The telescopic display device 100 also includes a limiting assembly 9, which includes a limiting slide 91 mounted on the housing 1 and a limiting sleeve 92 slidably mounted on the limiting slide 91. The two ends of the adjustment lens 10 are respectively mounted on the limiting sleeve 92 and the driving screw sleeve 83. This embodiment describes the case where one adjustment lens 10 is connected to only one driving member 81. The driving member 81 drives the driving screw 82 to move, and then drives the driving screw sleeve 83 to move through the driving screw 82, so that the adjustment lens 10 connected to the driving screw sleeve 83 moves together. In order to ensure the smoothness of movement and ensure that the adjustment lens 10 moves parallel to the central axis of the adjustment lens 10 itself, a fixed limiting slide 91 can be set at the other end of the adjustment lens 10, and a slidable limiting sleeve 92 is set on the limiting slide 91. The two ends of the adjustment lens 10 are respectively installed on the limiting sleeve 92 and the driving screw sleeve 83. In this way, the limiting slide 91 and the limiting sleeve 92 themselves do not have power, but can guide and limit the movement of the adjustment lens 10.

[0058] In some embodiments, the number of the adjustment components 8 is two groups, and each group of the adjustment components 8 includes a driving member 81, a driving screw 82 connected to the driving member 81, and a driving screw sleeve 83 sleeved on the driving screw 82. The two driving screws 82 are arranged in parallel, and the two ends of the adjustment lens 10 are respectively mounted on the two driving screw sleeves 83. This embodiment describes a situation in which a driving member 81 is respectively provided at both ends of an adjustment lens 10. The driving member 81 moves through the driving screw 82, and then drives the driving screw sleeve 83 to move through the driving screw 82, so that the adjustment lens 10 connected to the driving screw sleeve 83 moves together. By arranging the driving members 81 at both ends of the adjustment lens 10, the movement of the adjustment lens 10 is made smoother and the adjustment is also more convenient.

[0059] In some embodiments, the central axis of the drive screw 82 is arranged parallel to the central axis of the adjustment lens 10, and the adjustment assembly 8 is used to adjust the position of the adjustment lens 10 along the central axis of the adjustment lens 10. The central axis of the drive screw 82, the central axis of the adjustment lens 10, and the central axis of the limiting slide 91 are all parallel to each other. This ensures that the direction and distance of movement of the two ends of the adjustment lens 10 are consistent, and the position of the central axis of the adjustment lens 10 remains unchanged. The adjustment lens 10 always moves in parallel, facilitating the adjustment of the virtual image distance.

[0060] In some embodiments, the drive member 81 includes a servo motor, the drive screw 82 is a lead screw, and the drive screw sleeve 83 is provided with an internal thread, and the drive screw sleeve 83 is threadedly connected to the drive screw 82 via the internal thread. The servo motor can accurately control the number of transmission turns of the lead screw. The lead screw rotates but does not move along its own central axis. During the rotation of the lead screw, it drives the drive screw sleeve 83 connected to it to move along the central axis of the lead screw, thereby driving the adjustment lens 10 to move, thereby adjusting the position of the virtual image. By providing a servo motor and a lead screw, this embodiment makes the adjustment more precise and improves the adjustment accuracy.

[0061] Reference Figure 8 In some embodiments, a portion of the housing extends outward from the optical component 3, and the second image generating unit 5 is installed on the extended portion. In this case, the light-emitting surface of the second image generating unit 5 and the optical component 3 is exposed to the air and easily accumulates dust. In this case, the following two technical solutions can be designed. In a specific embodiment, referring to Figure 8 A transparent window panel 6 can be installed on the housing 1 to isolate the second display screen 51 and the optical component 3 from the outside air, providing protection. Furthermore, the window panel 6 is transparent, allowing light from the optical component 3 to pass through it and enter the human eye. In another embodiment, the entire telescopic display device 100 can be flipped upside down to prevent dust accumulation on the optical component 3.

[0062] Reference Figure 9 In some embodiments, the first image generating unit 4 and / or the second image generating unit 5 includes a display screen. The display screen here can be the first display screen 41 of the first image generating unit 4 or the second display screen 51 of the second image generating unit 5. The housing 1 is provided with a notch 13, and a sliding frame 14 is slidably provided on the notch 13. The display screen is detachably mounted on the sliding frame 14. The sliding frame 14 is provided with a charging port 15 electrically connected to the display screen. The display screen here is one of LCD, OLED, and MLED. It can be pulled out from the housing 1 and used as a separate display panel, which also facilitates the maintenance and replacement of the display screen. Specifically, the housing 1 is provided with a notch 13, and a sliding frame 14 is slidably provided on the notch 13. The display screen is mounted on the sliding frame 14. The sliding frame 14 is formed with a slot that at least partially accommodates the display screen, and the sliding frame 14 can slide on the notch 13 and then pull out the display screen located on the sliding frame 14 together, making it easy to remove the display screen. Furthermore, a charging port 15 may be provided on the sliding frame 14 or on the housing 1. When the display screen is placed back on the sliding frame 14, the display screen may be electrically connected to the charging port 15 for charging. The charging port 15 may be electrically connected to the display screen via a power cord or directly connected via a gold finger.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A telescopic image display device, characterized in that: The optical component comprises a housing, an optical member, a first image generating unit, a second image generating unit, and a reflective member. The housing has an accommodating cavity formed therein, the housing has an opening communicating with the accommodating cavity, and the optical member is mounted in the opening. The first image generating unit and the reflective member are both disposed in the accommodating cavity, and the first image generating unit and the second image generating unit are disposed on opposite sides of the optical member. The optical component includes a substrate and a semi-transparent and semi-reflective layer, wherein the semi-transparent and semi-reflective layer is arranged on the side of the substrate facing the first image generating unit; a grid reflector unit is arranged in the substrate, and a reflective surface is formed on the side of the grid reflector unit facing the second image generating unit, and the grid reflector unit also includes an absorption surface facing the first image generating unit; the substrate is a transparent plate, and the semi-transparent and semi-reflective layer is a semi-transparent and semi-reflective plate; a plurality of the grid reflector units on the cross section of each optical component form a grid reflector column, and the plurality of the grid reflector units in each grid reflector column are arranged at intervals; the vertical distance between two adjacent grid reflector units in the same grid reflector column is a horizontal spacing, and the horizontal spacing is greater than the height of the pixel; The first polarized light emitted by the first image generating unit is reflected by the semi-transmissive and semi-reflective layer and then incident on the reflective element. The second polarized light emitted by the second image generating unit enters the substrate and is reflected by the reflective surface and then incident on the reflective element. The first polarized light and the second polarized light are reflected by the reflective element and then emitted through the optical component.

2. The telescopic image display device according to claim 1, wherein: The gratings on each cross section of the optical component are arranged in reverse rows and staggered.

3. The telescopic image display device according to any one of claims 1 or 2, characterized in that: An anti-reflection film is provided on a side of the substrate facing the second image generating unit.

4. The telescopic image display device according to any one of claims 1 or 2, characterized in that The first image generating unit includes a first display screen and a first polarizer, and the second image generating unit includes a second display screen and a second polarizer. The polarization directions of the first polarizer and the second polarizer are perpendicular, that is, the first polarization direction of the first polarized light and the second polarization direction of the second polarized light are perpendicular to each other.

5. The telescopic image display device according to any one of claims 1 or 2, characterized in that: An adjustment lens and an adjustment assembly are also provided in the accommodating cavity. The first polarized light and the second polarized light are reflected by the optical component, pass through the adjustment lens and are incident on the reflector, and are reflected by the reflector and pass through the adjustment lens and are emitted from the optical component. The adjustment assembly is connected to the adjustment lens to adjust the position of the virtual image by adjusting the position of the adjustment lens.

6. The telescopic image display device according to any one of claims 1 or 2, characterized in that: The reflector includes a supporting area and a reflecting area. The supporting area is formed with a mounting hole. The reflecting area is arranged in the mounting hole. A control circuit layer is arranged on a side of the supporting area away from the optical component.

7. The telescopic image display device according to any one of claims 1 or 2, characterized in that: The first image generating unit and / or the second image generating unit includes a display screen, a slot is provided on the shell, a sliding frame is slidably provided on the slot, the display screen is detachably mounted on the sliding frame, and a charging interface electrically connected to the display screen is provided on the sliding frame.

Images