Black frame insertion device, optical glasses and display system

Abstract

The application provides a black insertion device, optical glasses and a display system. The black insertion device comprises a frame, an optical shielding assembly and a driving device. The frame has a visible area; the optical shielding assembly is installed in the frame; the optical shielding assembly comprises at least one movable light shielding component; and the driving device is in driving connection with the light shielding component and is configured to drive the light shielding component to periodically move in the visible area to periodically shield or expose the visible area, thereby being visually equivalent to a black insertion operation. By arranging the optical shielding assembly independently of the inside of the display and installing the optical shielding assembly in the frame, the black insertion function is no longer dependent on the backlight module or the liquid crystal panel structure of the display, thereby realizing general compatibility with various displays, getting rid of the high-cost dependence of traditional backlight black insertion on Mini-LED and reducing the overall system cost.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a black-insertion device, optical glasses, and display system. Background Technology

[0002] In displays such as LCD (Liquid Crystal Display) and OLED (Organic Light-Emitting Diode), the image becomes blurry due to visual persistence when objects move quickly, and the blurring is more severe at lower frame rates. Black screen insertion technology shortens the dwell time of a single frame and reduces the blurring effect by inserting a completely black image between adjacent frames.

[0003] Existing black pixel insertion technologies mainly include backlight black pixel insertion and LCD panel black pixel insertion: backlight black pixel insertion has the best effect and can follow the refresh rate in real time and compensate for the loss through peak brightness, but it is highly dependent on Mini-LED (Mini Light Emitting Diode) backlight, resulting in high cost and only suitable for the high-end market; LCD panel black pixel insertion has a lower cost, but it is divided into two solutions: inserting black images every other frame in the data stream (which requires sacrificing data volume, refresh rate or resolution) or adding a discharge module in the driving circuit (which leads to complex panel structure, crowded circuits and increased driving cost). Both are limited by inherent defects such as LCD response speed and the inability to effectively compensate for the brightness loss after black pixel insertion, which makes it difficult for their actual display effect to meet the needs of high-end applications.

[0004] Therefore, there is an urgent need for a new black dot insertion solution that balances low cost, high definition, and ease of adoption. Summary of the Invention

[0005] The main technical problem addressed by this application is to provide a black bar insertion device, optical glasses, and a display system, offering a novel black bar insertion solution that balances low cost, high definition, and ease of adoption.

[0006] To solve the above-mentioned technical problems, the first technical solution provided in this application is: to provide a blackboard insertion device, comprising: A frame with a visible area; An optical shading assembly is mounted within a frame; the optical shading assembly includes at least one movable shading component. The drive unit, which is connected to the light-shielding component, is configured to drive the light-shielding component to perform periodic movements within the visible area to periodically block or expose the visible area, thereby visually equivalent to a black screen insertion operation.

[0007] The drive unit has at least one gear position; The drive unit is configured to adjust its rotation speed based on the currently selected gear, such that the black insertion frequency generated by the optical blocking component is an integer multiple of the refresh rate of the external display used. The black insertion frequency is defined as the number of times the optical occlusion component completely blocks the visible area per unit time.

[0008] The optical shielding component includes a rotating shaft and at least one fan blade fixed on the rotating shaft. The fan blade has a planar structure and serves as a light-shielding component. The drive unit includes an electric motor, the output shaft of which is connected to a rotating shaft and configured to drive the rotating shaft to rotate the fan blades in a direction parallel to the plane of the fan blades, thereby achieving black insertion by the periodic passage of the fan blades through the visible area.

[0009] The number of fan blades is N, where N is an integer greater than or equal to 1; the insertion frequency is N times the rotational speed of the drive unit.

[0010] The frame has two spaced-apart visible areas, which constitute the left and right eye visible areas respectively; there are two optical blocking components, which are respectively set for the left and right eye visible areas; the fan blades in the two optical blocking components rotate in opposite directions.

[0011] The optical shielding assembly also includes a rotating shaft and a connecting rod support; The drive unit is connected to the rotating shaft to drive the rotating shaft to make circular motion; one end of the connecting rod bracket is connected to the rotating shaft, and the end of the connecting rod bracket away from the rotating shaft is connected to a light-shielding component. The light-shielding component is guided to make cyclical motion in a plane parallel to the visible area to block or expose the visible area.

[0012] The optical shielding assembly also includes an annular track and at least one wheel; At least one wheel is connected to a drive unit to drive the annular track in a cyclical motion; The light-shielding component is fixed to the ring track and moves with the ring track to periodically block or reveal the visible area.

[0013] The black insertion frequency of the optical blocking component is an even multiple of the refresh rate of the external display used.

[0014] To solve the above-mentioned technical problems, the second technical solution provided by this application is: to provide an optical eyeglass, which includes a wearing component and the above-mentioned black-insertion device; The wearing component is attached to the frame of the black-and-white device to secure the optical glasses to the target object.

[0015] To solve the above-mentioned technical problems, the third technical solution provided in this application is: to provide a display system, which includes the above-mentioned optical glasses and a display; The monitor is configured to output image signals at a preset refresh rate; The black insertion frequency of the black insertion device is configured to be an integer multiple of the display's refresh rate.

[0016] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a black-insertion device, optical glasses, and a display system. The black-insertion device includes a frame, an optical blocking assembly, and a driving device. The frame has a visible area; the optical blocking assembly is installed within the frame; the optical blocking assembly includes at least one movable light-blocking component; the driving device is connected to the light-blocking component and configured to drive the light-blocking component to perform periodic movement within the visible area to periodically block or expose the visible area, thus visually equivalent to a black-insertion operation. By setting an optical blocking assembly independent of the display's internal components and installing it within the frame, the black-insertion function no longer depends on the display's backlight module or LCD panel structure, thereby achieving universal compatibility with various displays, eliminating the high cost dependence of traditional backlight black-insertion on Mini-LEDs, and reducing the overall system cost. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of black dot insertion provided in this application; Figure 2 This is a schematic diagram of the structure of the first embodiment of the blackboard insertion device provided in this application; Figure 3 yes Figure 2 A schematic diagram of the working process of a single fan blade from its initial state through a shaded state to a fully exposed state; Figure 4 This is a schematic diagram of the structure of the second embodiment of the blackboard insertion device provided in this application; Figure 5 This is a schematic diagram of the structure of the third embodiment of the blackboard insertion device provided in this application; Figure 6 This is a schematic diagram of a module of an embodiment of the optical glasses provided in this application; Figure 7 This is a schematic diagram of a module of an embodiment of the display system provided in this application.

[0019] Explanation of icon numbers: 1. Insertion device; 10. Frame; 11. Visible area; 12. Non-visible area; 20. Optical shielding assembly; 21. Light-shielding component; 22. Rotating shaft; 23. Linkage bracket; 24. Rotating wheel; 25. Circular track; 2. Wearing assembly; 3. Optical glasses; 4. Display; 5. Display system. Detailed Implementation

[0020] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0021] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] Please see Figure 1 , Figure 1 This is a schematic diagram of black insertion provided in this application.

[0026] Currently, black LED insertion technology (primarily based on Mini-LEDs) is the most mature and effective mainstream solution. It controls the on / off state of the backlight LEDs through a driver circuit, not only synchronizing the black LED insertion frequency with refresh rate changes in real time, but also compensating for the brightness decay caused by black LED insertion by increasing the peak brightness during illumination. However, this technology is highly dependent on Mini-LED backlight modules, resulting in high manufacturing costs. Currently, it is mainly limited to the high-end market and difficult to popularize in the mid-to-low-end market. Its large-scale promotion still depends on further reductions in the cost of Mini-LEDs.

[0027] In contrast, while black frame insertion technology for LCD panels is lower in cost, it has significant technical limitations. This approach mainly falls into two categories: one involves inserting black frames into the data stream every other frame, but this halves the effective data volume, forcing manufacturers to compromise between increasing driver chip costs, sacrificing refresh rates, or reducing resolution; the other involves adding a discharge module to the panel driver circuit to achieve line-by-line discharge black frame insertion, but this increases the complexity of the panel structure and the congestion of the circuitry, as well as increasing driver costs. Furthermore, black frame insertion in LCD panels is limited by the response speed of the liquid crystal material itself and cannot recover overall brightness through peak brightness compensation like black frame insertion in backlighting, making it difficult to meet the actual display requirements of high-end applications.

[0028] Please see Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the first embodiment of the black string insertion device provided in this application. Figure 3 yes Figure 2 A schematic diagram of the working process of a single fan blade from its initial state through a shaded state to a fully exposed state.

[0029] To address the aforementioned technical problems, this application provides a black-insertion device 1, which includes a frame 10, an optical blocking assembly 20, and a driving device (not shown). The frame 10 has a visible area 11; the optical blocking assembly 20 is installed within the frame 10; the optical blocking assembly 20 includes at least one movable light-blocking member 21; the driving device is pulsatorically connected to the light-blocking member 21 and configured to drive the light-blocking member 21 to perform periodic movement within the visible area 11, so as to periodically block or expose the visible area 11, thereby visually equivalent to a black-insertion operation.

[0030] By setting independent of monitor 4 (see Figure 7The internal optical shielding component 20 is installed within the frame 10, so that the black insertion function no longer depends on the backlight module or LCD panel structure of the display 4, thereby achieving universal compatibility with various displays 4, getting rid of the high cost dependence of traditional backlight black insertion on Mini-LED, and reducing the overall system cost.

[0031] The frame 10 is the main body of the entire black-insertion device 1 structure, and it has a visible area 11 for the user to observe the display screen. The visible area 11 is the area through which the user's line of sight passes.

[0032] For example, the frame 10 has two spaced-apart visual areas 11, which constitute the left eye visual area and the right eye visual area, respectively. The left eye visual area corresponds to the wearer's left eye position, and the right eye visual area corresponds to the wearer's right eye position. The two are spatially separated to ensure the independence of the binocular visual channels.

[0033] The optical blocking assembly 20 is housed and installed inside the frame 10. The light-blocking component 21 is used to block light from passing through the visible area 11. The drive device is the power source, which can be a micro motor with gear set, pulley set or linkage mechanism, or other forms of linear or rotary drive source. It is connected to the light-blocking component 21 through mechanical transmission to transmit power to the light-blocking component 21.

[0034] After the drive unit is activated, it drives the light-blocking component 21 to perform a periodic reciprocating or rotating motion within the frame 10. When the light-blocking component 21 moves to the front of the visible area 11, it completely or mostly blocks the light, and the visible area 11 forms a black frame; when the light-blocking component 21 moves out of the visible area 11, the light passes through, and the visible area 11 displays a normal image. This periodic blocking and revealing simulates the black frame insertion effect of the display, thereby reducing visual persistence.

[0035] The drive unit is concealed in the non-visible area 12. In the initial state, the entire optical blocking assembly 20 is located in the non-visible area 12; when the black insertion function needs to be triggered, the light-blocking component 21 in the optical blocking assembly 20 is driven to move into the visible area 11 to block, and when it is not needed, it returns to the non-visible area 12.

[0036] The light-blocking component 21 is driven by a driving device to move periodically within the visible area 11. The black frame is inserted by means of mechanical blocking, which avoids the ghosting problem caused by the limited response speed of liquid crystal molecules. It achieves an instant and uniform black frame insertion effect. Since it is a pure mechanical blocking, the brightness loss depends only on the ratio of the blocking time to the period, and no additional compensation circuit is required, which further improves the light transmittance and viewing contrast.

[0037] In some embodiments, the drive device has at least one gear; the drive device is configured to adjust its rotation speed based on the currently selected gear, such that the black insertion frequency generated by the optical blocking component 20 is an integer multiple of the refresh rate of the external display 4 used; wherein, the black insertion frequency is defined as the number of times the optical blocking component 20 completely blocks the visible area 11 per unit time.

[0038] By setting the drive device to have at least one speed setting, users can select the appropriate speed setting according to the refresh rate of different monitors 4, thereby flexibly adapting to various specifications of monitors 4 on the market and improving the product's versatility and applicability.

[0039] For example, the black insertion frequency is defined as the number of times the optical occlusion component 20 completely occludes the visible area 11 within 1 second. The refresh rate refers to the number of times the display 4 can redraw the image per second, and is measured in Hz (Hertz).

[0040] Different speed settings correspond to different rotational speeds of the drive unit. A speed setting refers to several preset fixed operating states of the drive unit, each state corresponding to a specific speed range or constant speed. The drive unit is configured to adjust its output speed according to the speed setting selected by the user. By adjusting its speed based on the currently selected speed setting, the black frame insertion frequency generated by the optical blocking component 20 can precisely match an integer multiple of the refresh rate of the external display 4. This ensures strict synchronization between black frame insertion and screen refresh in time, avoiding screen tearing, misalignment, or flickering caused by frequency asynchrony, further improving the clarity and visual comfort of the displayed image.

[0041] To achieve optimal black frame insertion and prevent screen tearing, misalignment, or flickering, the black frame insertion frequency must be an integer multiple of the refresh rate of the external display 4. When the black frame insertion frequency is an integer multiple of the refresh rate, each frame ends with one or more complete black frames inserted, thus eliminating visual persistence. In some embodiments, the drive device includes a multi-speed micro DC motor, with different gear ratios selected by a toggle switch. For example, a high gear results in a high speed, suitable for high refresh rate displays 4, while a low gear results in a low speed, suitable for low refresh rate displays 4. In other embodiments, the drive device is a brushless motor with an electronic control unit. The user selects the gear ratio using buttons on the side of the black frame insertion device 1 or an external remote control. The control unit outputs a corresponding pulse width modulation (PWM) signal according to a preset mapping table to adjust the motor speed.

[0042] The black insertion frequency generated by the optical blocking component 20 is an integer multiple of the refresh rate of the external display 4. Specifically, the black insertion frequency divided by the refresh rate must result in a positive integer. For example, if the black insertion frequency is 120Hz and the refresh rate is 60Hz, the multiple is 2; if the black insertion frequency is 300Hz and the refresh rate is 100Hz, the multiple is 3. This integer multiple relationship ensures the phase consistency of the black insertion action within each display cycle.

[0043] In some embodiments, one setting corresponds to one refresh rate of the display 4. In other embodiments, one setting corresponds to multiple refresh rates of the display 4. For example, for refresh rates of 320Hz and 240Hz, a setting with a black insertion frequency of 960Hz (i.e., the least common multiple of the two) can be set to simultaneously support both refresh rates; while for 180Hz and 144Hz, another independent setting with a black insertion frequency of 720Hz (i.e., the least common multiple of the two) is required. In this way, a single setting can be compatible with multiple refresh rates with common multiples, thereby effectively covering the refresh rate requirements of most displays 4 on the market and ensuring the best viewing experience.

[0044] In some embodiments, such as Figure 2 As shown, the optical blocking assembly 20 adopts a fan-type structure. The optical blocking assembly 20 includes a rotating shaft 22 and at least one fan blade fixed on the rotating shaft 22. The fan blade has a planar structure and serves as a light-blocking component 21. The driving device includes an electric motor, the output shaft of which is connected to the rotating shaft 22 and configured to drive the rotating shaft 22 to rotate the fan blade in a direction parallel to the plane of the fan blade, thereby achieving black insertion by the periodic passage of the fan blade through the visible area 11.

[0045] The fan-type structure refers to designing the overall shape of the optical shielding component 20 as a rotating body similar to a fan, with the rotating shaft 22 serving as the central rotation axis and the fan blades serving as the light-shielding components 21. The fan blades have a planar structure. This planar structure design prevents the fan blades from generating aerodynamic lift or drag during rotation, unlike traditional fan blades. This reduces rotational resistance, decreases drive power consumption, and avoids visual interference or noise that may be caused by airflow disturbances, thereby improving wearing comfort.

[0046] The output shaft of the motor is directly connected to the rotating shaft 22, forming a rigid transmission connection to ensure that the rotational motion of the motor can be efficiently and smoothly transmitted to the rotating shaft 22. The output shaft of the motor and the rotating shaft 22 can be fixed by key connection, interference fit, or laser welding. The rotating shaft 22 drives the fan blades to rotate in a direction parallel to the fan blade plane, that is, the fan blades rotate around an axis perpendicular to their plane. When the fan blades rotate to a position covering the visible area 11, they block the line of sight, completing one black insertion action; when the fan blades rotate away from the visible area 11, the line of sight returns to clear. By connecting the output shaft of the motor to the rotating shaft 22 and driving the fan blades to rotate in a direction parallel to the fan blade plane, the fan blades can sweep across the visible area 11 with a constant posture, avoiding incomplete blocking or light leakage caused by fan blade tilt, thus achieving a uniform and thorough black insertion effect, further improving the clarity and contrast of the displayed image.

[0047] In some embodiments, the shaft 22 is made of lightweight, high-strength aluminum alloy or carbon fiber to reduce rotational inertia and improve response speed. The fan blades may be made of black, opaque polymer material, manufactured by injection molding, and the surface may be matte-finished to further reduce glare.

[0048] The fan blades can be rectangular, fan-shaped, elliptical, or irregularly shaped according to the shape of the visible area 11, as long as they can completely cover the visible area 11 during rotation. For example, the fan blades are fan-shaped.

[0049] By incorporating at least one fan blade, the structure becomes more compact and lightweight, facilitating integration into the frame 10 and reducing the overall size and weight of the product. The periodic passage of the fan blades through the visible area 11 ensures precise synchronization between the black insertion action and the refresh rate of the display 4, effectively eliminating visual ghosting. Furthermore, since mechanical black insertion is independent of the LCD panel's response speed, it achieves an instant, ghosting-free black insertion effect, resulting in a smooth visual experience at high refresh rates.

[0050] Furthermore, the number of fan blades is N, where N is an integer greater than or equal to 1; the insertion frequency is N times the rotational speed of the drive unit.

[0051] When N equals 1, the fan blades pass through the visible area 11 once for every rotation of the shaft 22, resulting in one insertion action. When N is greater than 1, for example, N equals 2, 3 or more, the fan blades are evenly or non-evenly distributed around the shaft 22. For every rotation of the shaft 22, the fan blades will pass through the visible area 11N times in sequence, thus generating N insertion actions.

[0052] The blackout frequency is the number of times the fan blades block the visible area 11 per unit time. Since each time the fan blades pass through the visible area 11 is considered as one blackout, and the rotation speed of the shaft 22 refers to the number of rotations of the shaft 22 per unit time, the blackout frequency is equal to the rotation speed of the shaft 22 multiplied by the number of fan blades N.

[0053] In some embodiments, the number of fan blades is three, with the three blades evenly distributed at 120 degrees on the shaft 22. When the drive rotates at 300 revolutions per minute, the black insertion frequency is 900 times per minute, or 15 Hz. Thus, during one revolution of the shaft 22, the fan blades pass through the visible area 11 three times, achieving three black insertions, thereby obtaining a high black insertion frequency at a lower rotation speed. In other embodiments, the number of fan blades is four, with the four blades evenly distributed at 90 degrees on the shaft 22. This multi-blade structure makes the black insertion action more frequent and the black insertion interval shorter, which is beneficial for further smoothing the visual experience. By increasing the number of fan blades, a higher black insertion frequency can be obtained while maintaining a lower rotation speed of the shaft 22. A lower rotation speed of the shaft 22 means a smaller moment of inertia, faster start and stop response, and reduced mechanical wear and noise.

[0054] By setting the number of fan blades to N and the insertion frequency to be N times the rotational speed of the drive unit, the rotational speed of the drive unit can be reduced while achieving the same insertion frequency. This reduces the centrifugal force and mechanical stress of the rotating parts, which helps to extend the service life of the mechanical structure and reduce operating noise.

[0055] Furthermore, in some embodiments, the frame 10 is provided with two spaced-apart visible areas 11, which respectively constitute the left eye visible area and the right eye visible area; two optical blocking components 20 are provided, and the two optical blocking components 20 are respectively provided for the left eye visible area and the right eye visible area; the rotation directions of the fan blades in the two optical blocking components 20 are opposite.

[0056] Reversed rotation means that when the fan blades in the left (corresponding to the left eye) optical blocking assembly 20 rotate clockwise, the fan blades in the right (corresponding to the right eye) optical blocking assembly 20 rotate counterclockwise; or vice versa, the left rotates counterclockwise and the right rotates clockwise. This reversed rotation configuration is to match the motion trajectory characteristics of the fan blades in a fan-type structure. Specifically, the output shaft of the left motor is connected to the left rotating shaft 22, driving the left fan blades to rotate clockwise; the output shaft of the right motor is connected to the right rotating shaft 22, driving the right fan blades to rotate counterclockwise. The two motors can receive control signals synchronously and operate at the same speed, achieving the opposite rotation direction only through adjustments to the gear ratio or installation angle.

[0057] By setting two optical blocking components 20 corresponding to the left and right eye visual areas 11 respectively, the left and right eyes can simultaneously and independently obtain the black-insertion effect, eliminating the stereoscopic vision disruption or binocular visual imbalance that may be caused by monocular black-insertion, ensuring the consistency of binocular visual experience, and helping to maintain a normal stereoscopic viewing experience. By setting the rotation direction of the fan blades in the two optical blocking components 20 to opposite directions, the sweeping trajectory of the fan blades of the left and right eyes relative to their respective visual areas 11 is visually symmetrical and coordinated, avoiding the opposite dynamic visual interference or psychological discomfort caused by the same rotation direction in the left and right eyes, thereby improving the wearer's comfort and naturalness during use, and further enhancing the acceptance of black-insertion technology in practical applications.

[0058] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of the second embodiment of the blackboard insertion device provided in this application.

[0059] In other embodiments, such as Figure 4 As shown, the optical blocking assembly 20 adopts a transmission structure. The optical blocking assembly 20 includes a rotating shaft 22, a connecting rod support 23, and a light-blocking component 21; the driving device is connected to the rotating shaft 22 to drive the rotating shaft 22 to perform circular motion; one end of the connecting rod support 23 is connected to the rotating shaft 22, and the end of the connecting rod support 23 away from the rotating shaft 22 is connected to the light-blocking component 21. The light-blocking component 21 is guided to perform cyclic motion in a plane parallel to the visible area 11 to block or expose the visible area 11.

[0060] The rotating shaft 22 is the power input end, directly connected to the drive unit, and performs continuous circumferential rotation with the drive unit. The connecting rod bracket 23 serves as the transmission medium, and its structural form can be a straight rod, a curved arm, or other rigid connecting parts.

[0061] One end of the connecting rod bracket 23 is fixedly connected to the rotating shaft 22. As the rotating shaft 22 rotates, the connecting rod bracket 23 moves in a circular motion. The other end of the connecting rod bracket 23, away from the rotating shaft 22, is connected to a light-shielding component 21. The light-shielding component 21 has sufficient width and length to cover one or both sides of the visible area 11. In some embodiments, there is one light-shielding component 21, which is a strip structure; there are two connecting rod brackets 23 and two rotating shafts 22; the ends of the two connecting rod brackets 23 away from the rotating shafts 22 are respectively connected to the two ends of the light-shielding component 21; and the two rotating shafts 22 rotate in the same direction. In other embodiments, there are two light-shielding components 21, two connecting rod brackets 23, and two rotating shafts 22; the light-shielding components 21 and connecting rod brackets 23 are arranged and connected in a one-to-one correspondence; and the two rotating shafts 22 rotate in opposite directions.

[0062] When the shaft 22 rotates, the linkage bracket 23 pushes or pulls the light-blocking component 21, causing it to periodically switch between a blocking position (completely covering the visible area 11) and an exposed position (completely leaving the visible area 11).

[0063] For example, the pivot 22 is installed in the non-visible area 12 of the black-insertion device 1, the connecting rod bracket 23 is L-shaped, straight, or cross-shaped, and the light-shielding component 21 is a thin sheet of black opaque material.

[0064] By employing a transmission structure including a rotating shaft 22, a connecting rod bracket 23, and a light-shielding component 21, the power transmission path is clear and the structure is compact. Compared to a direct rotation method for blocking, this effectively reduces the overall size and improves wearing comfort and aesthetics. The light-shielding component 21 is guided to circulate in a plane parallel to the visible area 11, ensuring a stable movement trajectory when blocking and revealing the visible area 11. This reduces light leakage or residual blocking caused by trajectory deviation, further improving the uniformity and integrity of the blackout effect, while also reducing mechanical wear and noise during operation.

[0065] Please see Figure 5 , Figure 5 This is a schematic diagram of the third embodiment of the blackboard insertion device provided in this application.

[0066] In some other embodiments, such as Figure 5 As shown, the optical blocking assembly 20 adopts a tracked structure. The optical blocking assembly 20 includes an annular track 25, a light-blocking component 21, and at least one rotating wheel 24; the at least one rotating wheel 24 is connected to a drive device to drive the annular track 25 to perform cyclical movement; the light-blocking component 21 is fixed on the annular track 25 and moves with the annular track 25 to periodically block or expose the visible area 11.

[0067] The annular track 25 is a closed flexible or semi-rigid belt structure connected end to end, forming a closed loop around at least one wheel 24.

[0068] The rotating wheel 24 is the power output end of the drive device. Its shaft is connected to the drive device. When the drive device is working, the rotating wheel 24 rotates and drives the annular track 25 that meshes with or rubs against it to perform cyclical motion.

[0069] The shape and size of the light-shielding component 21 must match the visible area 11. It is usually set as a long strip or irregular light-shielding block. The light-shielding component 21 is fixedly installed at a specific position on the annular track 25. When the annular track 25 moves cyclically under the drive of the rotating wheel 24, the light-shielding component 21 fixed on it also moves accordingly, periodically passing in front of the visible area 11 of the blackout device 1 along a preset trajectory, realizing the action of blocking and revealing.

[0070] When there are multiple rotating wheels 24, one rotating wheel 24 can be connected to the drive device, or multiple rotating wheels 24 can be connected to the drive device, and the multiple rotating wheels 24 connected to the drive device can move synchronously.

[0071] For example, there may be two rollers 24, located at the upper and lower ends of the track respectively, forming a structure similar to a conveyor belt, or a large-diameter roller 24 in conjunction with a tensioning roller. The light-shielding component 21 can be fixed to the inner or outer side of the track by means of snap-fit, adhesive, or integral molding.

[0072] In some specific embodiments, there are two rotating wheels 24, one of which is connected to a drive device. The drive device drives the rotating wheel 24 to move, and the rotating wheel 24 drives the annular track 25. There are two annular tracks 25, and the two ends of the light-shielding member 21 are respectively fixed to the two annular tracks 25, and the two annular tracks 25 move synchronously.

[0073] By adopting a tracked structure and utilizing the cooperation of the annular track 25 and the rotating wheel 24, the light-shielding component 21 achieves smooth and continuous cyclical movement within a limited space. This further reduces the size of the optical blocking component 20, making it easier to integrate into the frame 10 and improving the portability and wearing comfort of the device. The rotating wheel 24 connects to the drive unit and drives the annular track 25, resulting in a simple and efficient power transmission path, reducing intermediate transmission links, lowering mechanical losses and noise, and improving the reliability and service life of the system. With the light-shielding component 21 fixed to the annular track 25 and moving with it, the light-shielding component 21 can pass through the visible area 11 at a constant speed or a preset acceleration trajectory, ensuring the uniformity and consistency of the black insertion action. This avoids uneven black insertion time or screen flicker caused by speed fluctuations, thus guaranteeing the stability of the black insertion effect and the continuity of the visual experience.

[0074] Furthermore, when the optical blocking assembly 20 adopts a transmission structure or a tracked structure, the black insertion frequency of the optical blocking assembly 20 is an even multiple of the refresh rate of the external display 4 used.

[0075] The refresh rate of external display 4 refers to the number of times the display 4 updates the image per second, such as 60Hz, 120Hz, 144Hz, 240Hz, etc.

[0076] When the optical blocking component 20 adopts a transmission structure or a tracked structure, when the light-blocking component 21 moves from top to bottom to block the visible area 11, if the display 4 has just completed the display of one frame, an effective black-insertion sequence is formed; when the light-blocking component 21 moves from bottom to top to block the visible area 11 again, if the display 4 has just completed the display of another frame, a second effective black-insertion sequence is formed. Since the light-blocking component 21 passes through the visible area 11 twice in a complete movement cycle (once downward and once upward), if the black-insertion frequency is only an odd multiple of the refresh rate, the black-insertion direction of adjacent frames will be inconsistent (for example, the first frame is downward blocking and the second frame is upward blocking). This alternation of direction will visually produce image misalignment, jitter, or tearing, seriously affecting the viewing experience. By setting the black insertion frequency to an even multiple of the refresh rate, it can be ensured that the light-blocking component 21 passes through the visible area 11 in the same direction (e.g., always downward) when each frame is displayed, thus ensuring that the black insertion action and the screen refresh are highly synchronized and consistent in space and time. For example, when the external display 4 has a refresh rate of 144Hz, the black insertion frequency of the optical blocking component 20 can be set to 288Hz, that is, the light-blocking component 21 completes 144 downward blocking and 144 upward blocking per second, ensuring that each frame corresponds to one downward blocking. As another example, for a refresh rate of 240Hz, the black insertion frequency can be set to 480Hz, again maintaining an even multiple relationship, to adapt to the higher requirements of the high refresh rate display 4 for lower visual persistence.

[0077] By limiting the black insertion frequency of the optical blocking component 20 to an even multiple of the refresh rate of the external display 4, the display time of each frame corresponds to the blocking action of the light-blocking component 21 in the same direction during the movement of the light-blocking component 21. This eliminates visual misalignment and screen tearing caused by alternating black insertion directions, achieving strict synchronization between the black insertion action and the screen refresh in both timing and direction. By establishing a fixed even multiple relationship between the black insertion frequency and the refresh rate, the control logic is simplified. Matching can be achieved through preset levels or fixed ratios without complex real-time calculations, which helps reduce the complexity of the drive circuit, improves the system's stability and response speed, and ensures universality and compatibility on displays 4 with different refresh rates.

[0078] In some embodiments, the black-insertion device 1 further includes a housing (not shown), which includes a housing body (not shown) and a transparent window (not shown). The housing body encapsulates the optical blocking component 20 to isolate the optical blocking component 20 from the external environment; the transparent window is disposed inside the frame 10 and covers the visible area 11.

[0079] The enclosure is a component used to protect the internal mechanical structure and optimize optical performance.

[0080] The encapsulation body completely encloses the optical shielding component 20, serving to prevent dust, contact, and foreign objects from entering the mechanical transmission parts. By completely encapsulating the optical shielding component 20, it isolates the optical shielding component 20 from the external environment, effectively preventing dust, hair, and other foreign objects from entering the mechanical transmission mechanism. This reduces the failure rate caused by foreign object jamming, extends the service life of the equipment, and avoids safety hazards caused by users accidentally touching high-speed moving parts.

[0081] The transparent window is located on the side of the package body closest to the user's eyes, i.e., on the inner side of the frame 10, and its position precisely corresponds to the visible area 11 covered by the movement of the optical shielding component 20. The transparent window is made of a high-transmittance material, allowing light emitted from the display 4 to pass through with no or minimal attenuation. Simultaneously, it acts as a front barrier to the movement trajectory of the optical shielding component 20, preventing the user's fingers from accidentally touching the high-speed moving light-shielding component 21, thus ensuring safety. Exemplarily, the transparent window is an independent optical lens, installed in the inner opening of the package body by snap-fit ​​or adhesive.

[0082] Furthermore, the encapsulation body is located at the edge of the transparent window and extends to the portion of the cover frame 10 other than the visible area 11, i.e., the non-visible area 12. The encapsulation body is made of an opaque material, such as a black injection molded part, rubber pad, or coating. The encapsulation body is used to eliminate light leakage through the gap between the transparent window and the non-visible area 12, and to block ambient light from entering the user's field of vision from the side or top of the black insertion device 1, preventing ambient light from interfering with the black insertion effect, while also preventing stray light generated when the optical blocking assembly 20 is working from leaking to the outside.

[0083] When the user wears the black frame insertion device 1, the transparent window is close to or near the user's eyes, and the optical blocking component 20 moves periodically behind the transparent window (i.e., inside the encapsulation body). When the light-blocking component 21 moves to the visible area 11, the light is blocked, achieving black frame insertion; when the light-blocking component 21 moves away from the visible area 11, the light passes through the transparent window and enters the user's eyes. The encapsulation body ensures that only light passing through the transparent window enters the user's eyes, avoiding the phenomenon of black frames not being black or bright frames appearing gray due to side light leakage, thus guaranteeing the purity and contrast of the black frame insertion effect.

[0084] Please see Figures 2 to 6 , Figure 6 This is a schematic diagram of a module of an embodiment of the optical glasses provided in this application.

[0085] This application provides an optical glasses 3, wherein the optical glasses 3 includes a wearing component 2 and the aforementioned black-insertion device 1; the wearing component 2 is connected to the frame 10 of the black-insertion device 1 for fixing the optical glasses 3 to a target object.

[0086] The target object is the user's head or other suitable carrier. The wearing component 2 is used to stably fix the optical glasses 3 to the target object, preventing the optical glasses 3 from unexpected displacement, falling off or shaking during use.

[0087] The wearing component 2 and the frame 10 of the black insert device 1 can be fixedly connected. For example, the wearing component 2 and the frame 10 of the black insert device 1 can be formed in one piece from the same material through injection molding, 3D printing or other processes; or the wearing component 2 and the frame 10 of the black insert device 1 can be detachably connected. For example, the wearing component 2 can be installed on the frame 10 of the black insert device 1 by screws, buckles, magnetic structures or hinge mechanisms, so as to facilitate the replacement of wearing components 2 of different specifications or materials to adapt to different target objects.

[0088] In some embodiments, the wearing component 2 includes an elastic strap (not shown) and an adjustment member (not shown). The two ends of the elastic strap are respectively fixed to the ear positions on both sides of the frame 10 of the black-and-white device 1. The elastic strap tends to contract inwards in its natural state, and when fitted onto the rear contour of the target object, it generates a continuous radial restraint force, thereby pulling the optical glasses 3 forward and securing it. The adjustment member (such as a sliding buckle, magnetic point, or Velcro) is provided on the elastic strap to adjust the effective circumference of the elastic strap, thereby adapting to target objects of different sizes and ensuring a tight and comfortable fit. In other embodiments, the wearing component 2 includes a headband assembly (not shown) and an ear hook assembly (not shown). The headband assembly spans the top region of the target object, with its two ends bending downwards and connecting to the frame 10 of the black-and-white device 1. The headband assembly is configured to bear the main weight of the optical glasses 3, distributing the load to the top support surface of the target object. The ear hook assembly is connected to the side of the frame 10 of the black-and-white device 1 and extends to the rear of the side contour of the target object. The ear hook assembly primarily serves to position and prevent the optical glasses 3 from tilting forward or backward. In some embodiments, the wearing component 2 includes a connection interface (such as a magnetic contact, slot, or threaded hole) disposed on the frame 10 of the insert device 1. This connection interface (not shown) is configured for quick docking with external accessories (such as a dedicated headband, hat, helmet liner, etc.). Users can fix the optical glasses 3 to different external carriers via the connection interface according to their actual needs, achieving flexible switching of wearing methods. For example, a high-intensity sports headband can be connected in sports scenarios, while a regular decorative headband can be connected in static scenarios.

[0089] Please see Figures 2 to 7 , Figure 7 This is a schematic diagram of a module of an embodiment of the display system provided in this application.

[0090] This application provides a display system 5, which includes optical glasses 3 as described above and a display 4; the display 4 is configured to output image signals at a preset refresh rate; the black insertion frequency of the black insertion device in the optical glasses 3 is configured to maintain an integer multiple relationship with the refresh rate of the display 4.

[0091] Optical glasses 3 are external wearable devices used to block the visible area 11 to visually achieve an equivalent blackout operation. They periodically block light through mechanical movement to simulate a pulsed display effect, thereby reducing visual persistence.

[0092] Display 4 refers to display devices such as LCD or OLED, which continuously refresh images at a preset frame rate. Integer multiples mean that the black insertion frequency divided by the display 4's refresh rate is an integer.

[0093] By setting the black pixel insertion frequency to an integer multiple of the monitor 4's refresh rate, the mechanical occlusion action and image frame refresh are strictly synchronized in time, thereby eliminating visual persistence and avoiding image misalignment or periodic frame drops. Matching this integer multiple ensures that each frame experiences consistent occlusion patterns during display, further improving image clarity and viewing comfort. This configuration allows the optical glasses 3 to operate independently of the monitor 4's internal drive circuitry, achieving efficient black pixel insertion through simple frequency synchronization. This reduces system complexity and cost while maintaining versatility across monitors 4 with different refresh rates.

[0094] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0095] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A blackboard insertion device, characterized in that, include: A frame with a visible area; An optical shielding assembly is installed within the frame; The optical blocking assembly includes at least one movable light-blocking component; A driving device, which is connected to the light-shielding component, is configured to drive the light-shielding component to perform periodic movements within the visible area to periodically block or expose the visible area, thereby visually equivalent to a blackout operation.

2. The black insert device according to claim 1, characterized in that, The drive device has at least one gear position; The drive unit is configured to adjust its rotation speed based on the currently selected gear, such that the black insertion frequency generated by the optical blocking component is an integer multiple of the refresh rate of the external display used. The black-insertion frequency is defined as the number of times the optical blocking component completely blocks the visible area per unit time.

3. The blackboard insertion device according to claim 2, characterized in that, The optical shielding assembly includes a rotating shaft and at least one fan blade fixed on the rotating shaft. The fan blade has a planar structure and serves as the light-shielding component. The driving device includes an electric motor, the output shaft of which is connected to the rotating shaft and configured to drive the rotating shaft to rotate the fan blades in a direction parallel to the plane of the fan blades, thereby achieving black insertion by the periodic passage of the fan blades through the visible area.

4. The black-insertion device according to claim 3, characterized in that, The number of fan blades is N, where N is an integer greater than or equal to 1; the insertion frequency is N times the rotational speed of the drive device.

5. The black insert device according to claim 3, characterized in that, The frame has two spaced-apart visible areas, which respectively constitute the left-eye visible area and the right-eye visible area; there are two optical blocking components, and the two optical blocking components are respectively set corresponding to the left-eye visible area and the right-eye visible area; the fan blades in the two optical blocking components rotate in opposite directions.

6. The black insertion device according to claim 2, characterized in that, The optical shielding assembly also includes a rotating shaft and a connecting rod support; The driving device is connected to the rotating shaft to drive the rotating shaft to perform circular motion; one end of the connecting rod bracket is connected to the rotating shaft, and the end of the connecting rod bracket away from the rotating shaft is connected to the light-shielding component. The light-shielding component is guided to perform cyclic motion in a plane parallel to the visible area to block or expose the visible area.

7. The black insertion device according to claim 2, characterized in that, The optical shielding assembly also includes an annular track and at least one rotating wheel; At least one of the rotating wheels is connected to the drive device to drive the annular track to perform cyclical motion; The light-shielding component is fixed to the annular track and moves with the annular track to periodically block or expose the visible area.

8. The black-insertion device according to claim 6 or 7, characterized in that, The black insertion frequency of the optical blocking component is an even multiple of the refresh rate of the external display used.

9. An optical pair of glasses, characterized in that, Includes a wearing component and a black-insertion device as described in any one of claims 1 to 8; The wearing component is connected to the frame of the insert device and is used to fix the optical glasses to the target object.

10. A display system, characterized in that, Includes the optical glasses as described in claim 9, and a display; The display is configured to output image signals at a preset refresh rate; The black insertion frequency of the black insertion device of the optical glasses is configured to be an integer multiple of the refresh rate of the display.

Images