Far image screen and electronic product

Abstract

The invention discloses a far-image screen and an electronic product with the far-image screen, the far-image screen comprises a display screen, a semi-transparent and semi-reflecting layer and a concave reflecting layer, the concave reflecting layer is provided with a light supplementing device used for supplementing light to the semi-transparent and semi-reflecting layer, the light supplementing device comprises a light supplementing light source and a focal length adjusting device, and the focal length adjusting device is used for adjusting the focal length of the light supplementing light source. And the focal length adjusting device is used for controlling the focal length of the light supplementing light source to be consistent with the focal length of the concave reflecting layer. According to the scheme, the light supplementing device is arranged in the far image screen, light supplementing can be conducted on the semi-transparent and semi-reflecting layer, a completely black area does not exist any more, and the situation of myopia caused by the similar shape deprivation phenomenon in the using process of the far image screen is avoided. Meanwhile, the light supplementing device further comprises a focal length adjusting device which can adjust light rays emitted by the light supplementing light source, the focal length of the light rays is made to be the same as the focal length of the picture directly reflected through the concave reflection layer, and therefore the comfort degree of human eyes when the human eyes watch the far image screen is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a telescopic screen and an electronic product having the telescopic screen. Background Art

[0002] At present, myopia is one of the most common eye diseases. Studies have shown that the increase in the incidence of myopia is closely related to long-term close viewing of electronic products. The telescopic screen is proposed to solve the problem of close viewing. The telescopic screen uses the principle of concave reflection imaging to form an upright and enlarged virtual image, and the image distance can be adjusted by designing the curvature and structural position of the concave screen. When using the telescopic screen, the picture displayed on the screen is magnified and distanced; therefore, although the telescopic screen is relatively close to the human eye, the image seen by the human eye is relatively far away, generally a few meters away, so the purpose of improving close-range viewing can be achieved.

[0003] There is a problem with the traditional telescopic screen structure. When viewing, the viewing image changes with the viewing distance. For example, when the distance between the human eye and the telescopic screen increases, the viewed image only occupies a small part of the visual field, and the rest of the visual field is black, forming a phenomenon similar to form deprivation, which is easy to cause myopia. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a telescopic screen that can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] On the one hand, a telescopic screen is provided, comprising a display screen, a semi-transparent and semi-reflective layer and a concave reflective layer, wherein a fill light device for filling light for the semi-transparent and semi-reflective layer is provided on the concave reflective layer, wherein the fill light device comprises a fill light source and a focal length adjustment device, and the focal length adjustment device is used to control the focal length of the fill light source to make it consistent with the focal length of the concave reflective layer.

[0007] Optionally, the concave reflective layer is a spherical mirror, a cylindrical mirror or a free-form mirror.

[0008] Optionally, the focal length adjustment device is a plano-convex lens, and the curvature radius of the concave reflective layer is the same as the curvature radius of the plano-convex lens.

[0009] Optionally, the focal length adjustment device is a biconvex lens, and the focal length of the concave reflective layer is the same as the focal length of the biconvex lens.

[0010] Optionally, the focal length adjustment device is a liquid crystal lens or a liquid lens.

[0011] Optionally, the display screen is an electronic product with an LCD, OLED or MicroLED screen.

[0012] Optionally, the fill light source is an incandescent lamp, an LED lamp or a fluorescent lamp.

[0013] Optionally, the concave reflective layer has a reflective area for reflecting the light reflected by the semi-transmissive and semi-reflective layer and an extension area located around the reflective area, and the fill light device is arranged in the extension area.

[0014] Optionally, the fill light source is arranged on a side of the extension area away from the reflection area, and the focus adjustment device is arranged on a side of the extension area close to the reflection area.

[0015] Optionally, a reflective prism is further included, and the reflective prism is configured to reflect the light emitted by the fill light source to the semi-transmissive and semi-reflective layer.

[0016] Optionally, the reflective prism is arranged on a side of the focus adjustment device away from the fill light source.

[0017] Optionally, the fill light device is centrally symmetrically arranged on the concave reflective layer.

[0018] Optionally, the fill light device is arranged in a ring shape around the concave reflective layer.

[0019] Optionally, the fill light source is a plurality of discretely arranged point light sources or a continuously arranged line light source.

[0020] In another aspect, an electronic product is provided, comprising the telescopic screen as described above.

[0021] The beneficial effect of the present application is as follows: in the present solution, by providing a fill light device in the telephoto screen, it is possible to fill light to the semi-transparent and semi-reflective layer so that there is no completely black area, thereby avoiding the occurrence of myopia caused by a phenomenon similar to form deprivation during the use of the telephoto screen.

[0022] At the same time, the fill light device in the present application also includes a focal length adjustment device, which can adjust the light emitted by the fill light source so that its focal length is the same as the focal length of the picture directly reflected by the concave reflective layer, so that the position where the human eye obtains the fill light and the position where the display screen displays the picture are on the same imaging plane, thereby ensuring the comfort of the human eye when viewing the telephoto screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described in detail below based on the drawings and embodiments.

[0024] Figure 1 It is a structural schematic diagram of an existing telescopic screen;

[0025] Figure 2 This is a schematic diagram of the structure of the telephoto screen described in the embodiment of the present application;

[0026] Figure 3 This is a structural schematic diagram of a light-filling device provided on a concave reflective layer according to an embodiment of the present application;

[0027] Figure 4 This is a structural schematic diagram of a light-filling device provided on a concave reflective layer according to another embodiment of the present application;

[0028] Figure 5 Schematic diagram of the optical path structure of the fill light device described in the embodiment of the present application.

[0029] In the figure:

[0030] 1. Display screen; 2. Semi-transparent and semi-reflective layer; 3. Concave reflective layer;

[0031] 100, display screen; 200, semi-transmissive and semi-reflective layer; 300, concave reflective layer; 400, fill light device; 410, fill light source; 420, focus adjustment device; 430, reflective prism. DETAILED DESCRIPTION

[0032] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0033] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0037] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0038] Long-term use of traditional electronic devices can easily cause myopia, especially for teenagers. The incidence of myopia among teenagers in my country can reach about 70%, which has seriously affected the physical fitness of teenagers. Therefore, the prior art provides a telescopic screen, which can replace traditional electronic products to solve the myopia problem caused by watching electronic products at close range to a certain extent.

[0039] The telephoto screen uses the principle of concave reflection imaging to form an upright and enlarged virtual image, and the image distance can be adjusted by designing the curvature and structural position of the concave screen. Figure 1 As shown, the basic structure of the telephoto screen includes a display screen 1, a semi-transparent and semi-reflective layer 2 and a concave reflective layer 3. The light emitted by the display screen 1 is reflected by the semi-transparent and semi-reflective layer 2 and then incident on the concave reflective layer 3, forming an upright and enlarged virtual image on the side of the concave reflective layer 3 away from the semi-transparent and semi-reflective layer 2. However, when the angles and distances between the various components of the telephoto screen remain unchanged, the image size of the telephoto screen also remains unchanged. When watching, the size of the viewing picture changes with the change of the viewing distance. For example, when the distance between the human eye and the telephoto screen increases, the viewed picture only occupies a small part of the visual field. At this time, other positions in the visual field are all black, forming a phenomenon similar to form deprivation, which is also likely to cause myopia.

[0040] Based on this, refer to Figure 2-5As shown, an embodiment of the present application provides a telescopic screen, including a display screen 100, a semi-transparent and semi-reflective layer 200 and a concave reflective layer 300, and a fill light device 400 for filling light for the semi-transparent and semi-reflective layer 200 is provided on the concave reflective layer 300, and the fill light device 400 includes a fill light source 410 and a focal length adjustment device 420, and the focal length adjustment device is used to control the focal length of the fill light source 410 to make it consistent with the focal length of the concave reflective layer 300.

[0041] In this solution, a fill light device 400 is provided in the telephoto screen, which can fill light for the semi-transmissive and semi-reflective layer 200 so that there is no completely black area, thereby avoiding the occurrence of form deprivation-like phenomena and myopia during the use of the telephoto screen.

[0042] The semi-transmissive and semi-reflective layer 200 described in the present application includes a display area for displaying the screen 100 and a non-display area other than the display area. When the position of the human eye and the telephoto screen changes, the display area of ​​the semi-transmissive and semi-reflective layer 200 changes. For example, when the user is close to the telephoto screen, the display area increases and the non-display area decreases. When the user is away from the telephoto screen, the display area decreases and the non-display area increases. The display area usually has a higher brightness, while the non-display area is usually black. If the brightness difference between the two is too large, it will cause the user to have a visual phenomenon similar to form deprivation and cause eye fatigue (similar to watching TV in a dark room, the light will be more dazzling). The fill light device 400 can fill light to the non-display area so that it is no longer black and no longer forms a large brightness difference with the display area, thereby reducing stimulation to the eyes.

[0043] At the same time, the fill light device 400 in the present application also includes a focal length adjustment device 420, which can adjust the light emitted by the fill light source 410 so that its focal length is the same as the focal length of the picture directly reflected by the concave reflective layer 300, so that the position where the human eye obtains the fill light and the position where the picture displayed on the display screen 100 is on the same imaging plane, thereby ensuring the comfort of the human eye when viewing the telephoto screen.

[0044] In the present application, the concave reflective layer 300 may be a spherical mirror, a cylindrical mirror or a free-form mirror.

[0045] Specifically, this application provides a specific solution for adjusting the focal length, referring to Figure 3 , 4 As shown, in this embodiment, the concave reflective layer 300 is a cylindrical mirror, the focal length adjustment device 420 is a plano-convex lens, and the curvature radius of the concave reflective layer 300 is the same as the curvature radius of the plano-convex lens.

[0046] It is understandable that the above scheme is not intended to limit the present application, and other schemes may be used to adjust the focal length in other embodiments. For example, in another optional embodiment of the present application, the focal length adjustment device 420 is a biconvex lens, and the focal length of the concave reflective layer 300 is the same as the focal length of the biconvex lens.

[0047] It should be pointed out that the focal length adjustment in the above scheme is a fixed adjustment based on the structure of the concave reflective layer 300, that is, after the structure of the concave reflective layer 300 is determined, a focal length adjustment device with a fixed focal length is provided to adjust the focal length of the fill light source 410. However, in other embodiments of the present application, a scheme in which the focal length of the focal length adjustment device 420 is variable can also be adopted. For example, the focal length adjustment device 420 can adopt a liquid crystal lens.

[0048] Liquid lens is an optical element that uses liquid to adjust the shape and focal length of the lens. Liquid lens is usually surrounded by a transparent container or membrane, filled with liquid. By adjusting the shape of the liquid, the curvature and focal length of the lens can be changed, thereby achieving focal length adjustment.

[0049] The key features of liquid lenses include: Fast response: Liquid lenses can typically adjust focus quickly, making them suitable for applications that require fast zoom, such as real-time photography and machine vision. No mechanical movement: Compared to traditional mechanical zoom lenses, liquid lenses do not require moving lens parts, so focus adjustment can be achieved without mechanical movement. Compact design: Because liquid lenses do not require complex mechanical parts, they can be designed to be more compact and suitable for small devices and applications. Variable focal length: By changing the shape of the liquid inside the liquid lens, focal length changes between wide angle and telephoto can be achieved.

[0050] The display screen 100 described in the present application is an electronic product with an LCD, OLED or MicroLED screen.

[0051] LCD (Liquid Crystal Display): LCDs are composed of liquid crystal molecules that are located between two layers of glass. The arrangement of liquid crystal molecules adjusts the degree of light transmission through an electric field to form an image.

[0052] OLED (Organic Light Emitting Diode): OLEDs consist of thin film layers of organic compounds that emit light. OLEDs can be flexible, so they are also suitable for curved screens.

[0053] MicroLED (Micro Light Emitting Diode): MicroLED consists of very small LEDs, and each LED pixel is self-luminous, similar to OLED.

[0054] Optionally, the fill light source 410 is an incandescent lamp, an LED lamp or a fluorescent lamp. In this embodiment, LED or the like is used as the fill light source 410. An LED (light emitting diode) lamp is a lighting device that uses semiconductor materials to emit light. Compared with traditional incandescent lamps and fluorescent lamps, LED lamps have higher energy efficiency, longer life and more design flexibility.

[0055] Here are some features and benefits of LED lights:

[0056] High energy efficiency: LED lights have higher energy efficiency and can convert electrical energy into light energy more efficiently, so LED lights with the same brightness consume less electricity.

[0057] Long lifespan: LED lights typically have a longer lifespan than traditional lamps, ranging from tens to hundreds of thousands of hours, thus reducing the cost and hassle of more frequent replacements.

[0058] Fast response: LED lights have a fast turn-on and turn-off response speed and do not require warm-up time.

[0059] Energy saving and environmental protection: Due to their high energy efficiency and low energy consumption, LED lights can reduce energy consumption, reduce greenhouse gas emissions, and are more environmentally friendly.

[0060] Shock and impact resistance: LED lights are made of semiconductor materials and have strong shock and impact resistance, making them suitable for a variety of environments.

[0061] Design flexibility: LED lamps have compact size and a variety of colors to choose from, and can be designed to meet various lighting needs.

[0062] No UV radiation: LED lights do not produce ultraviolet radiation, which is more beneficial to the lighting objects and human health.

[0063] Cold light source: LED lights generate relatively less heat and do not generate noticeable heat like incandescent lamps, making them suitable for temperature-sensitive applications.

[0064] Dimming performance: Many LED lights can be dimmed, and users can adjust the brightness as needed.

[0065] Furthermore, in this embodiment, the concave reflective layer 300 has a reflective area for reflecting the light reflected by the semi-transmissive and semi-reflective layer 200 and an extension area located around the reflective area, and the fill light device 400 is arranged in the extension area.

[0066] The concave reflective layer 300 is configured to include a reflective area and an extended area. The reflective area is used to reflect the light reflected by the semi-transparent and semi-reflective layer 200. Therefore, the fill light device 400 is arranged in the extended area without blocking the image displayed by the display screen 100. At the same time, in the process of using the traditional telescopic screen, the position where the black is displayed is located at the periphery of the image. In the present application, the extended area is correspondingly arranged, which can make the propagation distance of the fill light shorter and the product structure more compact. At the same time, there is no need to interfere with the light of the display image itself, so that the display image will not be distorted or have color difference.

[0067] In the embodiment of the present application, the specific configuration of the fill light device 400 is described by way of example. Figure 3 As shown, the fill light source 410 is arranged on a side of the extension area away from the reflection area, and the focus adjustment device is arranged on a side of the extension area close to the reflection area. In order to achieve the propagation of light, the present embodiment further includes a reflective prism 430, and the reflective prism 430 is arranged to be able to reflect the light emitted by the fill light source 410 to the semi-transparent and semi-reflective layer 200. The reflective prism 430 is arranged on a side of the focus adjustment device away from the fill light source 410. That is, the fill light source 410, the focus adjustment device and the reflective prism 430 are arranged in sequence from the outside to the inside, and the light emitted by the fill light source 410 is reflected by the reflective prism 430 to the semi-transparent and semi-reflective layer 200 after the focus is adjusted by the focus adjustment device.

[0068] It is understandable that the arrangement of the fill light source 410, the focus adjustment device 420 and the reflective prism 430 from the outside to the inside is not a limitation to the present application. Figure 4 As shown, in other embodiments of the present application, a solution in which the fill light source 410, the focus adjustment device 420 and the reflective prism 430 are arranged sequentially from the inside to the outside may also be adopted.

[0069] In the present application, in order to ensure that the fill light is emitted uniformly and balanced from the semi-transmissive and semi-reflective layer 200, the fill light device 400 is centrally symmetrically arranged on the concave reflective layer 300. Preferably, the fill light device 400 is arranged in a ring shape around the concave reflective layer 300.

[0070] The fill light source 410 described in the present application is a plurality of discretely arranged point light sources or a continuously arranged line light source.

[0071] Reference Figure 3 , 4 As shown, in this embodiment, a plurality of discretely arranged LEDs are used as the fill light source 410 .

[0072] The telephoto screen described in the present application also includes an ambient light intensity detection device, which is used to detect the ambient light in the place where the telephoto screen is used. The fill light intensity of the fill light device 400 can be adjusted according to the light intensity of the ambient light so that the displayed image and the ambient light do not form a strong contrast and affect vision.

[0073] Meanwhile, this embodiment also provides an electronic product, including the telescopic screen as described above.

[0074] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A telescopic screen, characterized in that: The invention comprises a display screen (100), a semi-transmissive and semi-reflective layer (200) and a concave reflective layer (300); a fill light device (400) for filling light for the semi-transmissive and semi-reflective layer (200) is arranged on the concave reflective layer (300); the fill light device (400) comprises a fill light source (410) and a focal length adjustment device (420); the focal length adjustment device (420) is used to control the focal length of the fill light source (410) to make it consistent with the focal length of the concave reflective layer (300).

2. The telescopic screen according to claim 1, characterized in that: The concave reflective layer (300) is a spherical mirror, a cylindrical mirror or a free-form mirror.

3. The telescopic screen according to claim 2, characterized in that: The focal length adjustment device (420) is a plano-convex lens, and the curvature radius of the concave reflective layer (300) is the same as the curvature radius of the plano-convex lens.

4. The telescopic screen according to claim 2, characterized in that: The focal length adjustment device (420) is a biconvex lens, and the focal length of the concave reflective layer (300) is the same as the focal length of the biconvex lens.

5. The telescopic screen according to claim 2, characterized in that: The focal length adjustment device (420) is a liquid crystal lens or a liquid lens.

6. The telescopic screen according to claim 5, characterized in that: The display screen (100) is an electronic product with an LCD, OLED or MicroLED screen.

7. The telescopic screen according to any one of claims 1 to 6, characterized in that: The supplementary light source (410) is an incandescent lamp, an LED lamp or a fluorescent lamp.

8. The telescopic screen according to claim 7, characterized in that: The concave reflective layer (300) comprises a reflective area for reflecting the light reflected by the semi-transmissive and semi-reflective layer (200) and an extension area located around the reflective area, and the light-filling device (400) is arranged in the extension area.

9. The telescopic screen according to claim 8, characterized in that: The fill light source (410) is arranged on a side of the extension area away from the reflection area, and the focus adjustment device (420) is arranged on a side of the extension area close to the reflection area.

10. The telescopic screen according to claim 1, characterized in that: It also includes a reflective prism (430), wherein the reflective prism (430) is configured to reflect light emitted by the supplementary light source (410) toward the semi-transmissive and semi-reflective layer (200).

11. The telescopic screen according to claim 10, characterized in that: The reflective prism (430) is arranged on a side of the focus adjustment device (420) away from the supplementary light source (410).

12. The telescopic screen according to claim 11, characterized in that: The light-filling device (400) is centrally symmetrically arranged on the concave reflective layer (300).

13. The telescopic screen according to claim 12, characterized in that: The supplementary light device (400) is arranged in a ring shape around the concave reflective layer (300).

14. The telescopic screen according to claim 12, characterized in that: The supplementary light source (410) is a plurality of discretely arranged point light sources or a continuously arranged line light source.

15. An electronic product, characterized in that: The invention comprises the telescopic screen according to any one of claims 1 to 14.

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