Three-dimensional suspension imaging display system based on double retroreflection films

Abstract

The utility model discloses a three-dimensional suspension imaging display system based on double retro-reflection films, which comprises a bearing shell, a display device, an upper retro-reflection film, a rear retro-reflection film and a VRC film, and is characterized in that the display device is positioned at the lower position in the bearing shell and faces the upper position in the bearing shell; the upper side retroreflection film is arranged at the upper position in the bearing shell and is opposite to the display device, an opening is formed in the front position of the bearing shell and forms an observation area, and the rear side retroreflection film is arranged at the rear position in the bearing shell and is opposite to the opening of the bearing shell; and the VRC membrane is positioned in the center of the bearing shell and is obliquely arranged. According to the utility model, the VRC film is adopted, so that the overall weight of the system can be greatly reduced, the portability and the impact resistance are enhanced, and the use is safer. And the upper side retroreflection film and the rear side retroreflection film have high retroreflectivity, so that the imaging brightness and the imaging definition can be remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of optical display technology, and in particular to a three-dimensional levitation imaging display system based on a double retroreflective film. Background Technology

[0002] With the continuous development of optical imaging and display technologies, traditional flat-panel display devices can no longer meet the new display demands for 3D stereoscopic imaging, interactive displays, and levitating virtual images. Current naked-eye 3D display solutions mainly include lens array methods, grating methods, holographic display methods, and retroreflective structure methods. Among them, the "optical levitation imaging system" based on retroreflective structures combined with semi-reflective optical elements has attracted attention due to its simple structure and ability to enable naked-eye observation of 3D images.

[0003] However, traditional retroreflective levitation imaging systems mainly use semi-reflective glass, which is heavy and fragile, affecting the portability and safety of the equipment. Furthermore, existing retroreflective components have low reflectivity, resulting in low image brightness and poor clarity. Therefore, further improvements are needed. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies, such as insufficient brightness and poor safety, by providing a new three-dimensional levitation imaging display system based on a dual retroreflective film.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A three-dimensional levitation imaging display system based on dual retroreflective films includes a carrier housing, a display device, and an upper retroreflective film, a rear retroreflective film, and a VRC film. The carrier housing is divided into a front position, an upper position, a rear position, and a lower position with its center. The display device is located in the lower position inside the carrier housing and faces the upper position inside the carrier housing. The upper retroreflective film is disposed in the upper position inside the carrier housing and is opposite to the display device. An opening is provided in the front position of the carrier housing to form an observation area. The rear retroreflective film is disposed in the rear position inside the carrier housing and is opposite to the opening of the carrier housing. The VRC film is located in the center of the carrier housing and is obliquely disposed.

[0007] The housing is used to support the various components. The relative positions of the upper retroreflective film, the rear retroreflective film, the VRC film, and the display device ensure that the light emitted by the display device is ultimately directed towards the front of the housing, i.e., the opening of the housing, thus facilitating the user's observation of the formed three-dimensional floating image in the observation area.

[0008] The VRC film is a thin, lightweight, semi-transparent, semi-reflective optical film with high optical flatness and excellent reflectivity / transmittance. Compared to existing semi-reflective glass, its weight is reduced by nearly 30 times, significantly reducing the overall weight of the imaging display system and making it more portable. Furthermore, compared to fragile and less secure semi-reflective glass, the VRC film in this solution offers higher safety, greater reliability, and better meets current usage requirements. The upper and rear retroreflective films have high retroreflectivity, significantly improving image brightness and clarity.

[0009] Preferably, the three-dimensional levitation imaging display system based on dual retroreflective films described above further includes a quarter-wave plate, which is disposed on the rear retroreflective film and located between the VRC film and the rear retroreflective film.

[0010] Preferably, the aforementioned three-dimensional levitation imaging display system based on dual retroreflective films further includes an inner support base located within the support housing. The inner support base has a receiving opening on its lower side, which is positioned above the display device via the receiving cover. The rear retroreflective film is disposed on the rear side wall of the inner support base. The front of the inner support base is provided with an inclined support platform aligned with the direction of the VRC film. The VRC film is disposed on the inclined support platform, and the inclined support platform also has a light-passing opening corresponding to the VRC film.

[0011] Preferably, in the aforementioned three-dimensional levitation imaging display system based on a dual retroreflective film, a sunken platform is provided around the light-passing opening on the periphery of the inclined support platform, and the periphery of the VRC film is located within the sunken platform.

[0012] Preferably, in the aforementioned three-dimensional levitation imaging display system based on a dual retroreflective film, reinforcing ribs are arrayed at the connection between the front sidewall of the inner support and the inclined support platform.

[0013] Preferably, the aforementioned three-dimensional levitation imaging display system based on a dual retroreflective film further includes a support base, a support seat, and a rotating shaft. The number of support seats is two and they are arranged on the left and right sides of the support base. The number of rotating shafts is the same as the number of support seats. The inner end of each rotating shaft is connected to one side of the support housing, and the outer end of each rotating shaft is tightly fitted to the corresponding support seat. Each rotating shaft also has an adjustment knob protruding outward from its outer end.

[0014] Preferably, in the above-described three-dimensional levitation imaging display system based on dual retroreflective films, both the upper retroreflective film and the rear retroreflective film are microprism-type retroreflective films.

[0015] Preferably, the above-described three-dimensional levitation imaging display system based on a dual retroreflective film includes, from bottom to top, a circuit board, a display screen, and a pressure plate connected in sequence. The display screen faces upwards within the supporting housing, and the pressure plate has a recess in the middle for light from the display screen to pass through. The size of the recess is greater than or equal to the size of the display screen.

[0016] Preferably, in the above-described three-dimensional levitation imaging display system based on dual retroreflective films, the display screen is a TFT display screen with a brightness ≥1000cd / m².

[0017] Preferably, in the above-described three-dimensional levitation imaging display system based on dual retroreflective films, a suspended platform is further provided at the lower position inside the supporting housing, and a heat dissipation space is formed between the suspended platform and the bottom of the supporting housing. The bottom of the supporting housing is provided with heat dissipation holes that communicate with the heat dissipation space, and the display device is disposed on the suspended platform and communicates with the heat dissipation space.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model uses VRC film to replace the semi-reflective glass in the prior art, which can greatly reduce the overall weight of the system and enhance portability and impact resistance, making it safer to use.

[0020] 2. The upper and rear retroreflective films adopt microprism-type retroreflective films, which have higher reflection efficiency, significantly improve light energy utilization, and enhance imaging clarity.

[0021] 3. It adopts a TFT display screen with a brightness of ≥1000cd / m², which can improve the brightness and contrast of the three-dimensional floating image, making it more suitable for outdoor or strong light environments and expanding the application scenarios.

[0022] 4. A quarter-wave plate was added to the rear retroreflective film, which can adjust the polarization state of the light path, significantly suppress stray light interference, and improve the clarity of the levitation imaging.

[0023] 5. The inner support can effectively support the VRC membrane internally and enhance the overall structural strength of the support shell.

[0024] 6. The structure of the support base, support seat, rotating shaft, and adjustment knob allows the support shell to rotate as needed by the user, thereby adjusting the position of the observation area and meeting the usage needs of people of different heights in different scenarios.

[0025] 7. The structure of the heat dissipation space and heat dissipation holes can better dissipate the heat generated during use and reduce the impact of heat on the imaging display system.

[0026] This utility model has a robust overall structure, high security, and is more portable. It also provides a clear optical path during use, making it suitable for integration into various commercial displays or interactive terminals. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0029] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0030] Figure 4 This is an exploded view of the inner support and display device in this utility model;

[0031] Figure 5 This is an exploded view of the bearing base, support seat, and rotating shaft in this utility model;

[0032] Figure 6 This is a schematic diagram of the microprism array structure in a microprism-type retroreflective film.

[0033] Figure 7 This is a retroreflection light path diagram of a single microprism in a microprism-type retroreflective film.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100. Support housing; 110. Upper retroreflective film; 120. Rear retroreflective film; 130. VRC film; 140. Opening; 150. Quarter-wave plate; 160. Suspended platform; 170. Heat dissipation space; 180. Heat dissipation hole; 200. Display device; 210. Circuit board; 220. Display screen; 230. Pressure plate; 231. Clearance opening; 300. Observation area; 400. Inner support base; 410. Reception opening; 420. Angled support platform; 421. Light transmission opening; 422. Recessed platform; 430. Reinforcing rib; 500. Support base; 510. Support base; 520. Rotating shaft; 521. Adjustment knob. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the present invention:

[0037] like Figure 1 , Figure 2As shown, a three-dimensional levitation imaging display system based on dual retroreflective films includes a carrier housing 100, a display device 200, and also includes an upper retroreflective film 110, a rear retroreflective film 120, and a VRC film 130. The carrier housing 100 is divided into a front position, an upper position, a rear position, and a lower position with its center. The display device 200 is located in the lower position inside the carrier housing 100 and faces the upper position inside the carrier housing 100. The upper retroreflective film 110 is disposed in the upper position inside the carrier housing 100 and is opposite to the display device 200. An opening 140 is provided in the front position of the carrier housing 100 to form an observation area 300. The rear retroreflective film 120 is disposed in the rear position inside the carrier housing 100 and is opposite to the opening 140 of the carrier housing 100. The VRC film 130 is located in the center of the carrier housing 100 and is obliquely disposed.

[0038] like Figure 2 As shown, during use, the display device 200 emits light towards the upper position inside the carrier housing 100. When the light passes through the VRC film 130, part of it is reflected onto the rear retroreflective film 120, and part of it is transmitted onto the upper retroreflective film 110. Then, through the retroreflective effect of the upper retroreflective film 110 and the rear retroreflective film 120, the light is reflected back to the VRC film 130. Furthermore, through the reflection and transmission effect of the VRC film 130, the light is directed towards the front position of the carrier housing 100, that is, the opening 140 of the carrier housing 100, so that the user can easily observe the formed three-dimensional floating image in the observation area 300.

[0039] The angle between the upper retroreflective film 110 and the VRC film 130 and the angle between the rear retroreflective film 120 and the VRC film 130 can be set to 45°, while the angles between adjacent upper retroreflective film 110, rear retroreflective film 120, display device 200 and opening 140 are all 90°.

[0040] like Figure 2 , Figure 3 As shown, preferably, a quarter-wave plate 150 is also included, which is disposed on the rear retroreflective film 120 and located between the VRC film 130 and the rear retroreflective film 120.

[0041] like Figure 2 , Figure 4As shown, preferably, it also includes an inner support 400, which is located inside the support housing 100. The inner support 400 has a receiving opening 410 on its lower side and covers the display device 200 through the receiving opening 410. The rear retroreflective film 120 is disposed on the rear side wall of the inner support 400. The front part of the inner support 400 is provided with an inclined support platform 420 that is aligned with the direction of the VRC film 130. The VRC film 130 is disposed on the inclined support platform 420. The inclined support platform 420 is also provided with a light passing through opening 421 corresponding to the VRC film 130.

[0042] Preferably, a sunken platform 422 is provided around the light penetration port 421 around the inclined support platform 420, and the periphery of the VRC membrane 130 is located within the sunken platform 422.

[0043] Preferably, reinforcing ribs 430 are arranged in an array at the connection between the front side wall of the inner bearing seat 400 and the inclined bearing platform 420.

[0044] like Figure 1 , Figure 2 , Figure 5 As shown, preferably, it also includes a support base 500, a support seat 510, and a rotating shaft 520. There are two support seats 510, which are arranged on the left and right sides of the support base 500. The number of rotating shafts 520 is the same as the number of support seats 510. The inner end of each rotating shaft 520 is connected to one side of the support housing 100, and the outer end of each rotating shaft 520 is tightly fitted to the corresponding support seat 510. The outer end of each rotating shaft 520 is also provided with an adjustment knob 521 protruding outward.

[0045] Because different users have different heights, or require different orientations for the opening 140 of the housing 100 in different usage scenarios, users have different requirements for the angle of the observation area 300. The above structure allows users to adjust the angle of the observation area 300 simply by rotating the housing 100 or by adjusting the knob 521. After adjustment, releasing the housing 100 or the knob 521 causes the housing 100 to automatically stop due to the friction between the rotating shaft 520 and the support base 510, making it convenient for users.

[0046] Preferably, both the upper retroreflective film 110 and the rear retroreflective film 120 are microprism-type retroreflective films.

[0047] like Figure 6 As shown, the microprism-type retroreflective film has an array of microprism structures, such as... Figure 7As shown, a single microprism structure is generally a solid angle structure composed of four equilateral triangular faces. The incident light enters from the right face and is transmitted to the bottom face, then reflected by the bottom face to the left face, and finally transmitted back to the direction of the incident light by the left face. This can increase the reflectivity of light to more than 95%. Therefore, the microprism type retroreflective film has a better retroreflective effect.

[0048] like Figure 2 , Figure 4 As shown, preferably, the display device 200 includes a circuit board 210, a display screen 220, and a pressure plate 230 connected in sequence from bottom to top. The display screen 220 faces the upper part of the support housing 100. The pressure plate 230 is provided with a relief opening 231 in the middle for the light from the display screen 220 to pass through. The size of the relief opening 231 is greater than or equal to the size of the display screen 220.

[0049] Preferably, the display screen 220 is a TFT display screen with a brightness ≥1000cd / m².

[0050] like Figure 2 As shown, preferably, a suspended platform 160 is also provided at the lower position inside the supporting housing 100. A heat dissipation space 170 is formed between the suspended platform 160 and the bottom of the supporting housing 100. A heat dissipation hole 180 communicating with the heat dissipation space 170 is provided at the bottom of the supporting housing 100. The display device 200 is disposed on the suspended platform 160 and communicates with the heat dissipation space 170.

[0051] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A three-dimensional levitation imaging display system based on dual retroreflective films, comprising a support housing (100) and a display device (200), characterized in that: It also includes an upper retroreflective film (110), a rear retroreflective film (120), and a VRC film (130). The carrier housing (100) is divided into a front position, an upper position, a rear position, and a lower position with its center. The display device (200) is located in the lower position inside the carrier housing (100) and faces the upper position inside the carrier housing (100). The upper retroreflective film (110) is located in the upper position inside the carrier housing (100) and is opposite to the display device (200). An opening (140) is provided in the front position of the carrier housing (100) to form an observation area (300). The rear retroreflective film (120) is located in the rear position inside the carrier housing (100) and is opposite to the opening (140) of the carrier housing (100). The VRC film (130) is located in the center of the carrier housing (100) and is obliquely arranged.

2. The three-dimensional levitation imaging display system based on dual retroreflective films according to claim 1, characterized in that: It also includes a quarter-wave plate (150) disposed on the rear retroreflective film (120) and located between the VRC film (130) and the rear retroreflective film (120).

3. The three-dimensional levitation imaging display system based on dual retroreflective films according to claim 1, characterized in that: It also includes an inner support (400), which is located inside the support housing (100). The inner support (400) has a receiving opening (410) on its lower side and covers the display device (200) through the receiving opening (410). The rear retroreflective film (120) is disposed on the rear side wall of the inner support (400). The front part of the inner support (400) is provided with an inclined support platform (420) that is aligned with the direction of the VRC film (130). The VRC film (130) is disposed on the inclined support platform (420). The inclined support platform (420) is also provided with a light passage opening (421) corresponding to the VRC film (130).

4. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 3, characterized in that: A sunken platform (422) is provided around the light transmission port (421) of the inclined support platform (420), and the periphery of the VRC membrane (130) is located within the sunken platform (422).

5. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 3, characterized in that: The front side wall of the inner bearing seat (400) and the inclined bearing platform (420) are provided with a series of reinforcing ribs (430).

6. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 1, characterized in that: It also includes a support base (500), a support seat (510), and a rotating shaft (520). There are two support seats (510) arranged on the left and right sides of the support base (500). The number of rotating shafts (520) is the same as the number of support seats (510). The inner end of each rotating shaft (520) is connected to one side of the support housing (100), and the outer end of each rotating shaft (520) is tightly fitted to the corresponding support seat (510). The outer end of each rotating shaft (520) is also provided with an adjustment knob (521) protruding outward.

7. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 1, characterized in that: Both the upper retroreflective film (110) and the rear retroreflective film (120) are microprism-type retroreflective films.

8. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 1, characterized in that: The display device (200) includes, from bottom to top, a circuit board (210), a display screen (220), and a pressure plate (230) connected in sequence. The display screen (220) faces the upper part of the support housing (100). The pressure plate (230) has a relief opening (231) in the middle for the light from the display screen (220) to pass through. The size of the relief opening (231) is greater than or equal to the size of the display screen (220).

9. A three-dimensional levitation imaging display system based on a dual retroreflective film according to claim 8, characterized in that: The display screen (220) is a TFT display screen, and the brightness of the display screen (220) is ≥1000cd / m².

10. A three-dimensional levitation imaging display system based on dual retroreflective films according to claim 1, characterized in that: A suspended platform (160) is also provided at the lower position inside the supporting housing (100). A heat dissipation space (170) is formed between the suspended platform (160) and the bottom of the supporting housing (100). A heat dissipation hole (180) communicating with the heat dissipation space (170) is provided at the bottom of the supporting housing (100). The display device (200) is disposed on the suspended platform (160) and communicates with the heat dissipation space (170).

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