Automatic refractive power adjustment device and method

Abstract

The present invention relates to the field of smart wear VR technology, and provides an apparatus and method for automatically adjusting refractive power used in VR glasses. [Solution] The automatic refractive power adjustment device includes a lens barrel bracket, a display screen module, a refractive power adjustment lens assembly, at least two guide holes and an adjustment ring, and further includes a processor, a pupil image collection device and a transmission assembly, the pupil image collection device collects a pupil image displayed on the display screen module and transmits it to the processor, the processor receives the pupil image, calculates whether refractive power adjustment is necessary and generates adjustment driving information, and drives the operation of the transmission assembly according to the adjustment driving information, the transmission assembly drives the rotation of the adjustment ring and rotates the refractive power adjustment lens assembly to adjust the distance with the display screen module to adjust the refractive power. Compared with the prior art, the automatic refractive power adjustment device of the present invention has a higher VR automatic refractive power adjustment effect and a better experience effect.

Description

[Technical Field]

[0001] The present invention relates to the field of smart wear VR technology, and more particularly to an apparatus and method for automatically adjusting refractive power. [Background technology]

[0002] With the development of network technology and electronic information technology, more and more games and various virtual reality and augmented reality devices are being developed, and users' demands for sensations when using external devices are also increasing. VR glasses, also known as VR head displays or virtual reality head-mounted display devices, use head-mounted display devices to block out the visual and auditory senses of the outside world and guide users to create sensations in a virtual environment.

[0003] The interpupillary distances of various VR glasses in the prior art are fixed, and the lens area of ​​the VR glasses is always designed to be large so that users with different interpupillary distances can use the VR glasses normally.

[0004] However, in the prior art, a user cannot check the clarity of the screen unless the glasses are worn in a predetermined position. If the user finds that the screen is unclear after wearing the glasses, the user must remove the VR headset and readjust the refractive power or operate a button to adjust the refractive power. This makes it difficult for the user to quickly adjust the refractive power to a reasonable level, which negatively impacts the user experience.

[0005] Therefore, there is a need to provide a new automatic power adjustment device and method to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0006] The technical problem to be solved by the present invention is to provide an apparatus and method for automatically adjusting VR refractive power, which has a good effect of automatic adjustment of VR refractive power, high image clarity, wide applicability, and a high user experience effect. [Means for solving the problem]

[0007] In a first aspect, to solve the above technical problem, the present invention provides an automatic refractive power adjusting device applicable to VR glasses, the automatic refractive power adjusting device including a lens barrel bracket, a display screen module attached to the image side of the lens barrel bracket, a refractive power adjusting lens assembly slidably installed within the lens barrel bracket, at least two guide holes penetrating the lens barrel bracket and extending spirally along the circumferential direction of the lens barrel bracket, and an adjustment ring fitted to the outside of the lens barrel bracket, the outer periphery of the refractive power adjusting lens assembly being supported within the guide holes and engaging with the adjustment ring to extend until it reaches a position limiting position; the automatic refractive power adjusting device further includes a processor, a pupil image collecting device fixed to the lens barrel bracket, and a transmission assembly fixed to the outside of the lens barrel bracket, the processor being electrically connected to the transmission assembly and the pupil image collecting device, respectively; the pupil image collecting device collects pupil images displayed on the display screen module and transmits them to the processor; The processor receives the pupil image and calculates whether a power adjustment is required to generate adjustment drive information, and drives the operation of the transmission assembly based on the adjustment drive information; The transmission assembly is transmission-connected to the adjustment ring to drive the rotation of the adjustment ring, and drives the rotation of the refractive power-adjusting lens assembly to adjust the gap between the refractive power-adjusting lens assembly and the display screen module, thereby performing refractive power adjustment.

[0008] Preferably, the refractive power adjusting lens assembly includes a lens bracket installed in the lens barrel bracket, an optical lens fixed to the inner periphery of the lens bracket, and a torsion post fixed to the outer periphery of the lens bracket, the lens barrel bracket including a lens barrel bracket main body and a boss extending from one side of the lens barrel bracket main body, the torsion post passing through the guide hole and limiting its position together with the adjustment ring. Preferably, the adjustment ring includes an adjustment ring main body fitted into the lens barrel bracket, a position limiting groove recessed from the inside of the adjustment ring main body along the optical axis direction, and a first gear structure protruding and extending from the outside of the adjustment ring main body, the transmission assembly including a drive unit fixed to one side of the lens barrel bracket, an output shaft passing through the lens barrel bracket and fixed to the drive unit, and a second gear structure fixed to the output shaft, the first gear structure meshing with the second gear structure.

[0009] Preferably, the diameter of said first gear structure is greater than the diameter of said second gear structure.

[0010] Preferably, there are three position limiting grooves, which are uniformly distributed inside the adjustment ring body, three torsion posts, which are uniformly distributed on the outer periphery of the lens bracket, three guide holes, which are uniformly distributed on the outer periphery of the lens barrel bracket body, and the three torsion posts pass through the three guide holes and abut into the three position limiting grooves, respectively.

[0011] Preferably, the lens barrel bracket body is recessed toward the side away from the adjustment ring to form a first mounting groove and a second mounting groove, a first seal ring and a second seal ring are respectively installed in the first mounting groove and the second mounting groove, and the adjustment ring is installed in abutment against the first seal ring and the second seal ring.

[0012] Preferably, a protective cover is fixed to the lens barrel bracket on the side facing away from the display screen module.

[0013] Preferably, the display screen module includes a fixture assembly and a display screen secured to a side of the fixture assembly adjacent to a barrel bracket, the barrel bracket being secured to the fixture assembly.

[0014] Preferably, the fixing assembly includes an end cover, a support plate fixed to the side of the end cover closest to the lens barrel bracket, a circuit board fixed to the support plate, and a light-shielding sheet attached to the display screen, the circuit board extending to the end cover.

[0015] In a second aspect, an embodiment of the present invention provides a method for automatically adjusting refractive power, the method being used in the above-mentioned automatic refractive power adjustment device and including steps S1 to S5, In step S1, the pupil image collecting device collects a pupil image displayed on the display screen module and transmits it to the processor; In step S2, the processor receives the pupil image, calculates whether refractive power adjustment is necessary, and converts the pupil image into the adjustment drive information; In step S3, the processor transmits the adjustment drive information to the transmission assembly; In step S4, the transmission assembly is controlled to rotate the adjusting ring according to the adjustment driving information, and the transmission assembly is controlled to rotate the power adjusting lens assembly to adjust the gap between the power adjusting lens assembly and the display screen module; In step S5, when the image output from the pupil image collecting device reaches a preset clarity, the processor controls the transmission assembly to stop. [Effects of the Invention]

[0016]

[0009] Compared with the prior art, in the apparatus and method for automatic refractive power adjustment of the present invention, a display screen module, a refractive power adjusting lens assembly, a guide hole, and an adjustment ring are mounted in a lens barrel bracket chamber, so that the outer periphery of the refractive power adjusting lens assembly is supported in the guide hole and engaged with the adjustment ring to limit its position; the pupil image collecting device is used to collect pupil images displayed by the display screen module and transmit them to the processor; the processor receives the pupil images and calculates whether refractive power adjustment is necessary, thereby generating adjustment driving information and driving the transmission assembly according to the adjustment driving information; the transmission assembly is transmission-connected to the adjustment ring to drive the adjustment ring relative to its rotation, and rotates the refractive power adjusting lens assembly to adjust the distance between the display screen module and the refractive power adjusting lens assembly, thereby performing the refractive power adjustment. In the field of smart wear VR, the automatic refractive power adjustment device can be adapted to all user groups, and there is no need to increase the pupil distance or mask width to accommodate myopia. The effect of automatic refractive power adjustment is achieved by driving the rotation of the adjustment ring through the transmission assembly. The overall structure is compact and small, saving wearing space and making the device lighter and thinner. At the same time, it can ensure the clarity of the screen for all users across different customer groups, improving the user experience.

[0017] In order to more clearly explain the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required in the description of the embodiments. It is obvious that the drawings described below are only some embodiments of the present invention, and those skilled in the art can further obtain other drawings based on these drawings without any creative work. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a schematic diagram showing the configuration of an automatic refractive power adjustment device of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of FIG. 1. [Figure 3]FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 5] 3 is a flowchart of the method for automatically adjusting refractive power according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments, and all other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without any creative work are all included in the protection scope of the present invention.

[0020] Example 1 As shown in FIGS. 1 to 4, an automatic refractive power adjusting device 100 is provided, which is applied to VR glasses. The automatic refractive power adjusting device 100 includes a lens-barrel bracket 2, a display screen module 1 attached to the image side of the lens-barrel bracket 2, a refractive power adjusting lens assembly 5 slidably installed within the lens-barrel bracket 2, at least two guide holes 23 penetrating the lens-barrel bracket 2 and extending spirally along the circumferential direction of the lens-barrel bracket 2, and an adjustment ring 3 fitted to the outside of the lens-barrel bracket 2. The outer periphery of the refractive power adjusting lens assembly 5 is supported within the guide holes 23 and engaged with the adjustment ring 3, extending until it reaches a position limiting position.

[0021] Preferably, the two guide holes 23 are arranged symmetrically, so that the refractive power adjusting lens assembly 5 is supported and installed in the two guide holes 23, with uniform supporting force and high stability.

[0022] The automatic refractive power adjusting device 100 further includes a processor (not shown), a pupil image collecting device 6 fixed to the lens barrel bracket 2, and a transmission assembly 4 fixed to the outside of the lens barrel bracket 2, the processor being electrically connected to the transmission assembly 4 and the pupil image collecting device 2, The pupil image collecting device 2 is used to collect pupil images displayed on the display screen module 1 and transmit them to the processor.

[0023] The processor receives the pupil image and calculates whether refractive power adjustment is required, thereby generating adjustment driving information, and based on the adjustment driving information, drives the operation of the transmission assembly 4. When a user wears the eyeglasses, the pupil image collected by the pupil image collecting device 6 is transmitted to the processor, and the processor calculates whether refractive power adjustment is required based on the image collected by the pupil image collecting device 6 and transmits the pupil image to the processor, which converts the pupil image into driving information.

[0024] The transmission assembly 4 is transmission-connected to the adjusting ring 3 to drive the rotation of the adjusting ring 3 and to drive the rotation of the refractive power-adjusting lens assembly 5 to adjust the distance between the refractive power-adjusting lens assembly 5 and the display screen module 1, thereby adjusting the refractive power. When it is confirmed that the wearing sensor is in a predetermined position, the pupil image collecting device 6 transmits a pupil image to the processor, which then activates the transmission assembly 4 to drive the adjusting ring 3 to rotate, one side of the refractive power-adjusting lens assembly 5 passing through the lens barrel bracket 2 and positioning together with the adjusting ring 3, and during the rotation of the adjusting ring 3, the refractive power-adjusting lens assembly 5 is driven to move up and down within the lens barrel bracket 2, adjusting the distance between the refractive power-adjusting lens assembly 5 and the display screen module 1, thereby achieving the effect of automatic refractive power adjustment. Therefore, in the field of smart wear VR, the automatic refractive power adjustment device can be adapted to all user segments, and there is no need to increase the pupil distance and mask width to accommodate myopia. The effect of automatic refractive power adjustment is achieved by driving the rotation of the adjustment ring with the transmission assembly 4, and the overall structure is compact and small, saving wearing space and thereby realizing a lightweight and slim device. At the same time, it can ensure the clarity of the screen for all users across different customer segments, improving the user experience.

[0025] In this embodiment, the refractive power adjusting lens assembly 5 includes a lens bracket 51 installed in the lens barrel bracket 2, an optical lens 52 fixed to the inner periphery of the lens bracket 51, and a torsion post fixed to the outer periphery of the lens bracket 51. The lens barrel bracket 2 includes a lens barrel bracket main body 21 and a boss 22 extending from one side of the lens barrel bracket main body 21. The torsion post passes through the guide hole 23 and defines a position together with the adjustment ring 3. The bottom end of the guide hole 23 is located adjacent to the display screen module and extends in a ring shape from the bottom end to the top end of the guide hole 23, allowing the torsion post 52 to move within the guide hole 23 and easily achieve the rotation and elevation functions.

[0026] In S3, the transmission assembly 4 drives the adjusting ring 3 to rotate, and the adjusting ring 3 drives the torsion rod 53 to move within the guide hole 23 to adjust the distance between the optical lens 52 and the display screen module 1. By installing the lens bracket 51 in the lens barrel bracket 2, the transmission assembly 4 drives the adjustment ring 3 to rotate, which drives the torsion rod 53 to move within the guide hole 23 in the lens barrel bracket body 21, thereby changing the distance between the refractive power adjusting lens assembly 5 and the display screen module 1 and completing the automatic refractive power adjustment.

[0027] In this embodiment, the adjustment ring 3 includes an adjustment ring main body 31 fitted into the telescope tube bracket 2, a position limiting groove 32 recessed from the inside of the adjustment ring main body 31 along the optical axis direction, and a first gear structure 33 formed by protruding and extending from the outside of the adjustment ring main body 31, and the transmission assembly 4 includes a drive unit (not shown) fixed to one side of the telescope tube bracket 2, an output shaft 41 passing through the telescope tube bracket 2 and fixed to the drive unit, and a second gear structure 42 fixed to the output shaft 41, and the first gear structure 33 meshes with the second gear structure 42. The transmission assembly 4 receives the driving information sent by the processor and activates the driving unit of the transmission assembly 4 according to the driving information, driving the driving unit output shaft 41 to rotate, thereby driving the second gear structure 42 to rotate, and the first gear structure 33 meshes with the second gear structure 42. During the driving process of the driving unit, the adjusting ring 3 rotates, and the rotation of the adjusting ring 3 drives the torsion post 53 to move within the guide hole 23 in the lens barrel bracket body 21, thereby raising and lowering the lens bracket 51, thereby changing the distance between the optical power adjusting lens assembly 5 and the display screen module 1 and completing the automatic optical power adjustment. For example, when the driving unit rotates forward, the adjusting ring 3 rotates counterclockwise, and the torsion post 53 moves counterclockwise along the inner position limiting groove 32 of the adjusting ring 3. The torsion post 53 slides from the bottom end of the guide hole 23 to the top end of the guide hole 23, thereby increasing the distance between the optical lens 52 and the display screen module 1. When the driving unit is reversed, the adjusting ring 3 rotates clockwise, and the torsion post 53 moves counterclockwise along with the inner position limiting groove 32 of the adjusting ring 3, so that the torsion post 53 slides from the top end of the guide hole 23 to the bottom end of the guide hole 23 and lowers, thereby reducing the distance between the optical lens 52 and the display screen module 1. By rotating the driving unit forward and backward, the distance between the refractive power adjusting lens assembly 5 and the display screen module 1 can be automatically adjusted, thereby achieving the effect of automatic refractive power adjustment.

[0028] Preferably, the transmission assembly 4 may be an electric motor or a motor, and a processor provides a driving signal to the motor, which starts rotation to drive the second gear structure 42 to rotate, the second gear structure 42 drives the first gear structure 33 to move, thereby driving the adjusting ring 3 to rotate, and the position limiting groove 32 of the adjusting ring 3 drives the torsion post 53 to move, thereby realizing the lifting and lowering movement of the lens bracket 51, adjusting the distance between the lens and the display screen module 1, and completing the automatic refractive power adjustment.

[0029] In this embodiment, the diameter of the first gear structure 33 is larger than the diameter of the second gear structure 42. The first gear structure 33 and the second gear structure 42 are both spur gears, which are easy to install and have a high transmission effect.

[0030] In this embodiment, there are three position limiting grooves 32, which are uniformly distributed inside the adjusting ring body 31, three torsion posts, which are uniformly distributed on the outer periphery of the lens bracket 51, and three guide holes 23, which are uniformly distributed on the outer periphery of the lens barrel bracket body 21, and the three torsion posts pass through the three guide holes 23 and abut into the three position limiting grooves 32, respectively, providing high stability during movement.

[0031] In this embodiment, the lens barrel bracket body 21 is recessed toward the side away from the adjustment ring 3 to form a first mounting groove 24 and a second mounting groove 25. A first seal ring 8 and a second seal ring 9 are respectively installed in the first mounting groove 24 and the second mounting groove 25, and the adjustment ring 3 is installed in contact with the first seal ring 8 and the second seal ring 9. This ensures good sealing between the adjustment ring 3 and the lens barrel bracket 2. Preferably, the first seal ring 8 and the second seal ring 9 are both O-shaped seal rings, which have excellent sealing performance.

[0032] In this embodiment, a protective cover is fixed to the side of the lens barrel bracket 2 that faces away from the display screen module 1 .

[0033] In this embodiment, the display screen module 1 includes a fixing assembly 11 and a display screen 12 fixed to the side of the fixing assembly 11 that is close to the lens barrel bracket, and the lens barrel bracket 2 is fixed to the lens barrel bracket 11. This ensures good fixation between the fixing assembly 11 and the lens barrel bracket 2, making the display screen 12 stable during the rotation of the adjustment ring 3, and ensuring clear images collected by the pupil image collecting device 6.

[0034] In this embodiment, the fixing assembly 11 includes an end cover 111, a support plate 112 fixed to one side of the end cover 111 adjacent to the lens barrel bracket 2, a circuit board 113 fixed to the support plate 112, and a light-shielding sheet 114 attached to the display screen 12, with the circuit board 113 extending to the end cover 111. The circuit board 113, the display screen 12, and the light-shielding sheet 114 are attached and fixed by the support plate 112, and the attached components are assembled together within the end cover 111, thereby providing a protective effect. The light-shielding sheet 114 is used for light blocking, thereby further improving the display effect of the display screen 12.

[0035] In this embodiment, the display screen 12 is a liquid crystal display (LCD) screen, which has a high display effect.

[0036] Example 2 As shown in FIGS. 1 to 5, an embodiment of the present invention provides a method for automatically adjusting refractive power, which is applied to the automatic refractive power adjusting device 100 of the first embodiment, and includes steps S1 to S5.

[0037] At S1, the pupil image collecting device 6 collects the pupil image displayed on the display screen module 1 and transmits it to the processor.

[0038] In S2, the processor receives the pupil image, calculates whether refractive power adjustment is necessary, and converts the pupil image into the adjustment driving information. When the user wears the eyeglasses, the pupil image collected by the pupil image collecting device 6 is transmitted to the processor, and the processor calculates whether refractive power adjustment is necessary based on the image collected by the pupil image collecting device 6 and transmits the pupil image to the processor, and the processor converts the pupil image into driving information.

[0039] In S3, the processor transmits the adjustment drive information to the transmission assembly 4.

[0040] In S4, based on the adjustment driving information, the transmission assembly 4 is controlled to drive the rotation of the adjusting ring, and the transmission assembly is controlled to drive the rotation of the refractive power adjusting lens assembly 5 to adjust the distance between the refractive power adjusting lens assembly and the display screen module 1. When it is confirmed that the wearing sensation is in a predetermined position, the pupil image collecting device 6 transmits the pupil image to the processor, and the processor starts the transmission assembly 4 to drive the adjusting ring 3 to rotate, one side of the refractive power adjusting lens assembly 5 passes through the lens barrel bracket 2 and is positioned together with the adjusting ring 3, and during the rotation of the adjusting ring 3, the refractive power adjusting lens assembly 5 is driven to move up and down within the lens barrel bracket 2, which is used to adjust the distance between the refractive power adjusting lens assembly 5 and the display screen module 1, thereby achieving the effect of automatic refractive power adjustment.

[0041] In step S5, when the image output from the pupil image collecting device 6 reaches a preset level of clarity, the processor controls the transmission assembly to stop. In the field of smartwear VR, the automatic refractive power adjusting device can accommodate all user demographics, eliminating the need to increase the exit pupil distance and mask width to accommodate myopia, thereby enabling devices to be made lighter and thinner. At the same time, it can ensure clarity that allows all users to view the screen for different customer segments, improving the user experience.

[0042]

[0009] Compared with the prior art, in the apparatus and method for automatic refractive power adjustment of the present invention, a display screen module, a refractive power adjusting lens assembly, a guide hole, and an adjustment ring are mounted in a lens barrel bracket chamber, so that the outer periphery of the refractive power adjusting lens assembly is supported in the guide hole and engaged with the adjustment ring to limit its position. The pupil image collecting device is used to collect pupil images displayed by the display screen module and transmit them to the processor. The processor receives the pupil images and calculates whether refractive power adjustment is necessary, thereby generating adjustment driving information and driving the transmission assembly according to the adjustment driving information. The transmission assembly is transmission-connected to the adjustment ring and drives the adjustment ring relative to its rotation, and rotates the refractive power adjusting lens assembly to adjust the distance between the display screen module and the optical power adjustment. In the field of smart wear VR, the automatic refractive power adjustment device can be adapted to all user groups, and there is no need to increase the pupil distance and mask width to accommodate myopia. The effect of automatic refractive power adjustment is achieved by driving the rotation of the adjustment ring through the transmission assembly. The overall structure is compact and small, saving wearing space and making the device lighter and thinner. At the same time, it can ensure the clarity of the screen for all users across different customer groups, improving the user experience.

[0043] The above is only an embodiment of the present invention, and those skilled in the art may make various modifications without departing from the creative concept of the present invention, which should be pointed out here as all of them fall within the scope of protection of the present invention.

[0044] (Addendum) (Appendix 1) An automatic refractive power adjustment device applied to VR glasses, the automatic refractive power adjusting device includes a lens barrel bracket, a display screen module attached to the image side of the lens barrel bracket, a refractive power adjusting lens assembly slidably installed within the lens barrel bracket, at least two guide holes penetrating the lens barrel bracket and extending spirally along the circumferential direction of the lens barrel bracket, and an adjustment ring fitted to the outside of the lens barrel bracket, the outer peripheral side of the refractive power adjusting lens assembly being supported within the guide holes and being engaged with the adjustment ring to extend until it reaches a position limiting position; the automatic refractive power adjusting device further includes a processor, a pupil image collecting device fixed to the lens barrel bracket, and a transmission assembly fixed to the outside of the lens barrel bracket, the processor being electrically connected to the transmission assembly and the pupil image collecting device, respectively; the pupil image collecting device collects pupil images displayed on the display screen module and transmits them to the processor; The processor receives the pupil image and calculates whether a power adjustment is required to generate adjustment drive information, and drives the operation of the transmission assembly based on the adjustment drive information; the transmission assembly is operatively connected to the adjustment ring to drive the rotation of the adjustment ring, and drives the rotation of the power-adjusting lens assembly to adjust the distance between the power-adjusting lens assembly and the display screen module, thereby adjusting the power.

[0045] (Appendix 2) The optical power adjusting lens assembly includes a lens bracket installed in the lens barrel bracket, an optical lens fixed to the inner periphery of the lens bracket, and a torsion pillar fixed to the outer periphery of the lens bracket, the lens barrel bracket including a lens barrel bracket main body and a boss extending from one side of the lens barrel bracket main body, and the torsion pillar passes through the guide hole and limits its position together with the adjustment ring.

[0046] (Appendix 3) the adjustment ring includes an adjustment ring body fitted to the lens-barrel bracket, a position limiting groove recessed from the inside of the adjustment ring body along the optical axis direction, and a first gear structure protruding and extending from the outside of the adjustment ring body; the transmission assembly includes a drive unit fixed to one side of the lens-barrel bracket, an output shaft passing through the lens-barrel bracket and fixed to the drive unit, and a second gear structure fixed to the output shaft, and the first gear structure meshes with the second gear structure.

[0047] (Appendix 4) 4. The automatic refractive power adjusting device according to claim 3, wherein the diameter of the first gear structure is larger than the diameter of the second gear structure.

[0048] (Appendix 5) The automatic refractive power adjusting device described in Appendix 3, characterized in that there are three position limiting grooves that are uniformly distributed inside the adjustment ring body, there are three torsion posts that are uniformly distributed on the outer periphery of the lens bracket, there are three guide holes that are uniformly distributed on the outer periphery of the lens barrel bracket body, and the three torsion posts pass through the three guide holes and abut into the three position limiting grooves, respectively.

[0049] (Appendix 6) The automatic refractive power adjusting device described in Appendix 3, characterized in that the lens barrel bracket body is recessed toward the side away from the adjustment ring to form a first mounting groove and a second mounting groove, a first seal ring and a second seal ring are installed in the first mounting groove and the second mounting groove, respectively, and the adjustment ring is installed in contact with the first seal ring and the second seal ring.

[0050] (Appendix 7) 2. The automatic refractive power adjusting device according to claim 1, wherein a protective cover is fixed to the side of the lens barrel bracket away from the display screen module.

[0051] (Appendix 8) The automatic optical power adjusting device described in Appendix 1, characterized in that the display screen module includes a fixing assembly and a display screen fixed to a side of the fixing assembly adjacent to a lens barrel bracket, and the lens barrel bracket is fixed to the fixing assembly.

[0052] (Appendix 9) The automatic refractive power adjusting device described in Appendix 8, characterized in that the fixing assembly includes an end cover, a support plate fixed to the side of the end cover closest to the lens barrel bracket, a circuit board fixed to the support plate, and a light-shielding sheet attached to the display screen, and the circuit board extends to the end cover.

[0053] (Appendix 10) A method for automatically adjusting refractive power, comprising: The method for automatically adjusting refractive power is applied to the device for automatically adjusting refractive power described in any one of Supplementary Notes 1 to 9, and includes steps S1 to S5, In step S1, the pupil image collecting device collects a pupil image displayed on the display screen module and transmits it to the processor; In step S2, the processor receives the pupil image, calculates whether refractive power adjustment is necessary, and converts the pupil image into the adjustment drive information; In step S3, the processor transmits the adjustment drive information to the transmission assembly; In step S4, the transmission assembly is controlled to rotate the adjusting ring according to the adjustment driving information, and the transmission assembly is controlled to rotate the power adjusting lens assembly to adjust the gap between the power adjusting lens assembly and the display screen module; In step S5, when the image output from the pupil image collecting device reaches a preset clarity, the processor controls the transmission assembly to stop. [Explanation of symbols]

[0054] 100 Automatic refractive power adjustment device 1 Display Screen Module 11 Fixing Assembly 111 End cover 112 Support plate 113 Circuit board 114 Blackout Sheet 12 display screens 2 Telescope tube bracket 21. Telescope bracket body 22 Boss 23 Guide hole 24 First mounting groove 25 Second mounting groove 3 Adjustment ring 31 Adjustment ring body 32 Position limiting groove 33 First gear structure 4 Transmission Assembly 41 Output shaft 42 Second gear structure 5 Power Correcting Lens Assembly 51 Lens bracket 52 Optical Lenses 53 Twisted column 6. Pupil image collection device 7 Protective cover 8 First seal ring 9 Second seal ring

Claims

1. An automatic refractive power adjustment device applied to VR glasses, the automatic refractive power adjusting device includes a lens barrel bracket, a display screen module attached to the image side of the lens barrel bracket, a refractive power adjusting lens assembly slidably installed within the lens barrel bracket, at least two guide holes penetrating the lens barrel bracket and extending spirally along the circumferential direction of the lens barrel bracket, and an adjustment ring fitted to the outside of the lens barrel bracket, the outer peripheral side of the refractive power adjusting lens assembly being supported within the guide holes and being engaged with the adjustment ring to extend until it reaches a position limiting position; the automatic refractive power adjusting device further includes a processor, a pupil image collecting device fixed to the lens barrel bracket, and a transmission assembly fixed to the outside of the lens barrel bracket, the processor being electrically connected to the transmission assembly and the pupil image collecting device, respectively; the pupil image collecting device collects pupil images displayed on the display screen module and transmits them to the processor; The processor receives the pupil image and calculates whether a power adjustment is required to generate adjustment drive information, and drives the operation of the transmission assembly based on the adjustment drive information; the transmission assembly is operatively connected to the adjustment ring to drive the rotation of the adjustment ring, and drives the rotation of the power-adjusting lens assembly to adjust the distance between the power-adjusting lens assembly and the display screen module, thereby adjusting the power.

2. 2. The automatic refractive power adjusting device according to claim 1, wherein the refractive power adjusting lens assembly includes a lens bracket installed in the lens barrel bracket, an optical lens fixed to the inner peripheral side of the lens bracket, and a torsion post fixed to the outer peripheral side of the lens bracket, the lens barrel bracket including a lens barrel bracket main body and a boss extending from one side of the lens barrel bracket main body, and the torsion post passes through the guide hole and limits its position together with the adjustment ring.

3. 3. The automatic optical power adjusting device of claim 2, wherein the adjustment ring includes an adjustment ring body fitted to the lens-barrel bracket, a position limiting groove recessed from the inside of the adjustment ring body along the optical axis direction, and a first gear structure protruding and extending from the outside of the adjustment ring body, and the transmission assembly includes a drive unit fixed to one side of the lens-barrel bracket, an output shaft passing through the lens-barrel bracket and fixed to the drive unit, and a second gear structure fixed to the output shaft, and the first gear structure meshes with the second gear structure.

4. 4. The optical power automatic adjusting device according to claim 3, wherein the diameter of the first gear structure is larger than the diameter of the second gear structure.

5. 4. The automatic refractive power adjusting device according to claim 3, wherein the number of the position limiting grooves is three and they are uniformly distributed on the inside of the adjusting ring body, the number of the torsion posts is three and they are uniformly distributed on the outer periphery of the lens bracket, the number of the guide holes is three and they are uniformly distributed on the outer periphery of the lens barrel bracket body, and the three torsion posts pass through the three guide holes and abut into the three position limiting grooves, respectively.

6. 4. The automatic refractive power adjusting device according to claim 3, wherein the lens barrel bracket body is recessed toward the side away from the adjustment ring to form a first mounting groove and a second mounting groove, a first seal ring and a second seal ring are respectively installed in the first mounting groove and the second mounting groove, and the adjustment ring is installed in contact with the first seal ring and the second seal ring.

7. 2. The automatic refractive power adjusting device according to claim 1, wherein a protective cover is fixed to the lens barrel bracket on the side away from the display screen module.

8. 2. The automatic optical power adjusting device of claim 1, wherein the display screen module includes a fixture assembly and a display screen secured to a side of the fixture assembly adjacent to a lens barrel bracket, the lens barrel bracket being secured to the fixture assembly.

9. 9. The automatic refractive power adjusting device according to claim 8, wherein the fixing assembly includes an end cover, a support plate fixed to the side of the end cover closest to the lens barrel bracket, a circuit board fixed to the support plate, and a light-shielding sheet attached to the display screen, the circuit board extending to the end cover.

10. A method for automatically adjusting refractive power, comprising: The method for automatically adjusting refractive power is applied to the device for automatically adjusting refractive power according to any one of claims 1 to 9, and includes steps S1 to S5, In step S1, the pupil image collecting device collects pupil images displayed on the display screen module and transmits them to the processor; In step S2, the processor receives the pupil image, calculates whether refractive power adjustment is necessary, and converts the pupil image into the adjustment drive information; In step S3, the processor transmits the adjustment drive information to the transmission assembly; In step S4, the transmission assembly is controlled to drive the rotation of the adjustment ring according to the adjustment driving information, and the transmission assembly is controlled to drive the rotation of the optical power adjusting lens assembly to adjust the gap between the optical power adjusting lens assembly and the display screen module; In step S5, when the image output from the pupil image collecting device reaches a preset clarity, the processor controls the transmission assembly to stop.

Images