An AR glasses with adjustable diopter

Abstract

The application provides a diopter-adjustable AR glasses, comprising: a glasses frame; optical modules, two optical modules arranged on the glasses frame; the optical module comprises: a display module, the display module is slidingly connected on the glasses frame; a lens group, the lens group is arranged on the glasses frame; an adjusting unit, the adjusting unit is arranged between the glasses frame and the optical module, and the adjusting unit is used for adjusting the distance between the display module and the lens group. By setting the clamping structure on the operating end of the adjusting unit, the user can only actively operate the clamping structure into the clamping state when needed, and then drive the display module to move through the knob; in the daily wearing or storage process, the clamping structure is in the separated state, even if the knob is accidentally touched, the internal transmission mechanism will not be driven, thereby effectively avoiding the diopter change caused by accidental touch, and improving the use stability and user experience.

Description

Technical Field

[0001] This invention relates to the technical field of AR glasses, and particularly to an AR glasses with adjustable diopter. Background Technology

[0002] With the continuous development of augmented reality (AR) technology, AR glasses, as a portable smart display device, are gradually being applied in various fields such as entertainment, office work, and education. To accommodate different users' visual conditions, some AR glasses with adjustable diopter have emerged in the current technology. These glasses typically use an adjustment knob located on the outside of the frame to drive an internal transmission mechanism, thereby changing the distance between the display module and the lens assembly, and thus achieving diopter adjustment.

[0003] However, existing refractive adjustment mechanisms have significant drawbacks. Specifically, the adjustment knob, as the operating point, is typically exposed and protrudes from the outer surface of the frame. During actual wear and use, users can easily accidentally touch the knob while adjusting their hair, adjusting the frame, or making other unintentional movements, causing it to rotate. This accidental rotation directly drives the transmission mechanism, altering the preset distance between the display module and the lens assembly, resulting in an unintended change in refractive power. This not only forces users to frequently readjust to restore clear vision, impacting the user experience, but also increases the risk of misadjustment of the refractive power during storage or transport due to external pressure or friction. Summary of the Invention

[0004] Therefore, the purpose of this invention is to provide an AR glasses with adjustable diopter.

[0005] This invention provides the following technical solution: an AR glasses with adjustable diopter, comprising: Picture frames; Optical modules, including two optical modules disposed on the lens frame; The optical module includes: The display module is slidably connected to the frame. Lens assembly, the lens assembly disposed on the lens frame; An adjustment unit is provided between the lens frame and the optical module, and the adjustment unit is used to adjust the distance between the display module and the lens group; The locking structure has an operating end of the adjustment unit exposed on the outside of the frame, and the locking structure is located at the operating end of the adjustment unit; when the locking structure is in the locked state, operating the locking structure causes the adjustment unit to move the display module.

[0006] The beneficial effects of this invention are: by setting a locking structure at the operating end of the adjustment unit, the user can actively operate the locking structure to enter the locking state only when adjustment is needed, and then drive the display module to move through the knob; during daily wear or storage, the locking structure is in the disengaged state, and even if the knob is accidentally touched, it will not drive the internal transmission mechanism, thereby effectively avoiding changes in refractive power caused by accidental touch, improving the stability of use and user experience.

[0007] Furthermore, the adjustment unit includes: A screw, which is rotatably connected to the mirror frame, and the display module is threadedly connected to the screw; A drive shaft is rotatably connected to the mirror frame, and one end of the drive shaft is exposed on the outside of the mirror frame and is provided with the locking structure. A bevel gear set, through which the screw and the drive shaft are driven.

[0008] Furthermore, the engaging structure includes: A knob, which is slidably connected to the drive shaft; The clutch unit is disposed between the knob and the drive shaft. When the clutch unit is engaged, rotating the knob will drive the drive shaft to rotate.

[0009] Furthermore, the engagement structure also includes: The disc body is formed by one end of the drive shaft protruding outward. A sliding cavity is provided inside the knob, and the disc body is located inside the sliding cavity; The knob has a through hole, which is used to connect the sliding cavity to the outside.

[0010] Furthermore, the clutch unit includes: A locking disc, wherein the locking disc is disposed on the knob; The groove is provided with a plurality of grooves along the circumference of the locking disc; The drive shaft has several protrusions at its end that mate with the groove. The protrusions are inserted into the groove, and the clutch unit is in an engaged state.

[0011] Furthermore, the clutch unit also includes: The second spring is disposed between the drive shaft and the knob.

[0012] Furthermore, the clutch unit includes: Telescopic components, a plurality of such telescopic components are arranged along the circumference of the transmission shaft; The knob is provided with several slots corresponding to the telescopic component. The telescopic component is inserted into the slots, and the clutch unit is in the engaged state.

[0013] Furthermore, the telescopic member includes: A locking block, which is slidably connected to the drive shaft; The first spring is disposed between the locking block and the drive shaft.

[0014] Furthermore, the telescopic component also includes: The sliding cavity is provided on the drive shaft, the locking block slides within the sliding cavity, and the first spring is located within the sliding cavity.

[0015] Furthermore, the clutch unit also includes: A connecting cavity, which is provided on the drive shaft, is used to connect the sliding cavity with the sliding cavity. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the adjustment unit of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the snap-fit ​​structure according to Embodiment 1 of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the snap-fit ​​structure in Embodiment 2 of the present invention.

[0021] Figure 6 This is a three-dimensional cross-sectional view of the snap-fit ​​structure in Embodiment 2 of the present invention.

[0022] The labels in the attached diagram are as follows: 1-frame, 2-temple, 3-optical module, 31-first lens, 32-second lens, 33-display module, 34-adjustment unit, 341-guide rod, 342-screw, 343-bevel gear set, 344-drive shaft, 345-knob, 346-sliding cavity, 347-through hole, 348-locking disc, 349-groove, 3410-disc body, 3411-protrusion, 3412-pressing surface, 3413-locking block, 3414-first spring, 3415-sliding cavity, 3416-connecting cavity, 3417-slot, 3418-second spring, 35-third lens. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example 1: Please see Figures 1 to 4 The present invention provides an AR glasses with adjustable diopter, including a frame 1, two temples 2 and two optical modules 3. The temples 2 are hinged to both ends of the frame 1, and the two optical modules 3 are symmetrically mounted on the frame 1, corresponding to the wearer's left eye and right eye respectively.

[0027] The optical module 3 includes a display module 31, a lens assembly, an adjustment unit 34, and a locking structure. The display module 31 is slidably mounted on the lens frame 1. The lens assembly is fixed inside the lens frame 1 and located on the light-emitting side of the display module 31. The adjustment unit 34 is located between the lens frame 1 and the display module 31, and is used to adjust the distance between the display module 31 and the lens assembly, thereby adjusting the diopter. The operating end of the adjustment unit 34 protrudes from the outside of the lens frame 1, and a locking structure is provided at this operating end. When the locking structure is engaged, the user can drive the display module 31 to move by operating the adjustment unit 34; when the locking structure is disengaged, the operating end of the adjustment unit 34 rotates freely and cannot drive the display module 31.

[0028] Specifically, the display module 31 includes a fixed bracket and a display fixed thereon, with the display facing the lens assembly. Four guide rods 341 are fixedly installed inside the lens frame 1. These four guide rods 341 pass through the four corners of the fixed bracket and slide in cooperation with the fixed bracket to ensure that the display module 31 remains stable during movement.

[0029] The lens assembly includes a first lens 31, a second lens 32, and a third lens 35, which together constitute an optical imaging system. The third lens 35 is a lens located below the display; the second lens 32 is a semi-reflective, semi-transparent lens, mounted at an angle below the third lens 35; and the first lens 31 is a semi-reflective, semi-transparent spherical mirror located in front of the second lens 32. By moving the display module 31 along the optical axis, the imaging distance can be changed, thereby achieving adaptive adjustment for different refractive powers. The principle of this optical imaging system is well known to those skilled in the art and will not be elaborated here.

[0030] The adjustment unit 34 includes a screw 342, a drive shaft 344, and a bevel gear set 343. The screw 342 is arranged along the optical axis, rotatably connected to the lens frame 1, and threadedly engaged with the fixing bracket of the display module 31. The drive shaft 344 is perpendicular to the screw 342, rotatably connected to the lens frame 1, with one end extending through the lens frame 1 to the outside, and a locking structure at that end. The bevel gear set 343 consists of two meshing bevel gears, respectively fixed to the screw 342 and the drive shaft 344, for transmitting the rotational motion of the drive shaft 344 to the screw 342.

[0031] The engagement structure includes a knob 345, a clutch unit, a disc body 3410, a sliding cavity 346, and a through hole 347. The knob 345 is located on the outside of the frame 1 and is slidably connected to the disc body 3410 at the end of the drive shaft 344 via the sliding cavity 346 on its inner side, and can move a certain distance axially. The through hole 347 is formed on the knob 345 to connect the sliding cavity 346 with the outside atmosphere, so as to avoid changes in air pressure affecting the sliding of the knob 345.

[0032] The clutch unit includes a locking disc 348, a groove 349, a protrusion 3411, and a second spring 3418. The locking disc 348 is fixed to the inner wall of the knob 345, and has multiple grooves 349 circumferentially formed therein. The disc 3410 of the drive shaft 344 has multiple protrusions 3411 corresponding to the grooves 349. The protrusions 3411 are elliptical or semi-circular in shape to facilitate engagement or disengagement with the grooves 349. The second spring 3418 is located between the disc 3410 and the knob 345, and always applies an outward pushing force to the knob 345.

[0033] Working principle: When diopter adjustment is needed, the user presses knob 345, causing protrusion 3411 to insert into slot 349, engaging the clutch unit. Rotating knob 345 then drives drive shaft 344, which in turn drives screw 342 via bevel gear set 343, moving display module 31 along the optical axis and changing its distance from the lens assembly, thus adjusting diopter. After adjustment, releasing knob 345 resets the knob, disengaging protrusion 3411 from slot 349, disengaging the clutch unit, and allowing knob 345 to idle. Subsequently, even if knob 345 is accidentally touched, drive shaft 344 will not rotate, effectively preventing accidental diopter adjustment.

[0034] Example 2: Please see Figure 5 and Figure 6 The structure of this embodiment is basically the same as that of Embodiment 1, the difference lies in the specific implementation of the clutch unit.

[0035] In this embodiment, the clutch unit includes telescopic components and slots 3417. Several telescopic components are arranged circumferentially along the drive shaft 344, and several slots 3417 are correspondingly provided on the inner wall of the knob 345. When the telescopic components are engaged in the slots 3417, the clutch unit is in an engaged state; when the telescopic components are disengaged from the slots 3417, the clutch unit is in a disengaged state.

[0036] Specifically, the telescopic component includes a locking block 3413, a first spring 3414, and a sliding cavity 3415. The sliding cavity 3415 is a radial hole formed on the drive shaft 344. The locking block 3413 is slidably disposed within the sliding cavity 3415, and its front end is arc-shaped or conical to facilitate engagement with the locking slot 3417. The first spring 3414 is located within the sliding cavity 3415, at the bottom of the locking block 3413, and consistently applies an outward extending force to the locking block 3413. The locking slots 3417 are distributed circumferentially along the inner wall of the knob 345, corresponding one-to-one with the locking blocks 3413.

[0037] To facilitate the movement of the locking block 3413, a connecting cavity 3416 is provided on the drive shaft 344. This connecting cavity 3416 passes through the disc body 3410 and communicates with the sliding cavity 3415, ensuring that the air pressure in the sliding cavity 3415 is consistent with that in the sliding cavity 346, thus preventing air pressure changes from hindering the movement of the locking block 3413. In addition, the knob 345 has an arc-shaped pressing surface 3412 on the side near the locking block 3413, which is used to push the locking block 3413 out of the slot 3417 when the knob 345 is pulled.

[0038] Working principle: In its natural state, the first spring 3414 pushes the locking block 3413 into the slot 3417, and the clutch unit is engaged. Rotating the knob 345 at this time drives the drive shaft 344 to rotate, thus adjusting the diopter. To prevent accidental operation, the user can pull the knob 345 outwards, causing the locking block 3413 to overcome the spring force of the first spring 3414 and exit the slot 3417 under the pressure of the pressing surface 3412. The clutch unit then disengages, and the knob 345 rotates freely. For further adjustment, press and rotate the knob 345 to align the slot 3417 with the locking block 3413. The locking block 3413 then re-engages into the slot 3417 under the action of the first spring 3414, restoring the engaged state.

[0039] In summary, by setting a locking structure at the operating end of the adjustment unit, the user can only actively operate the locking structure to enter the locking state when adjustment is needed, and then drive the display module to move via the knob. During daily wear or storage, the locking structure is in the disengaged state, and even if the knob is accidentally touched, it will not drive the internal transmission mechanism, thereby effectively avoiding changes in refractive power caused by accidental touch, improving the stability of use and the user experience.

[0040] Users can easily switch between the locking and unlocking states by simply pressing or pulling the knob, making the adjustment process intuitive and convenient. Meanwhile, the display module moves smoothly and with high adjustment precision through the cooperation of the guide rod and screw, meeting the visual needs of different users.

[0041] By providing multiple implementation methods for the clutch unit (such as the engagement of the protrusion and the groove, and the engagement of the telescopic component and the slot), the invention can be flexibly selected according to product design and cost requirements, thereby enhancing its versatility and feasibility.

[0042] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An AR glasses with adjustable diopter, characterized in that, include: Picture frames; Optical modules, including two optical modules disposed on the lens frame; The optical module includes: The display module is slidably connected to the frame. Lens assembly, the lens assembly disposed on the lens frame; An adjustment unit is provided between the lens frame and the optical module, and the adjustment unit is used to adjust the distance between the display module and the lens group; The locking structure has an operating end of the adjustment unit exposed on the outside of the frame, and the locking structure is located at the operating end of the adjustment unit; when the locking structure is in the locked state, operating the locking structure causes the adjustment unit to move the display module.

2. The AR glasses according to claim 1, characterized in that, The adjustment unit includes: A screw, which is rotatably connected to the mirror frame, and the display module is threadedly connected to the screw; A drive shaft is rotatably connected to the mirror frame, and one end of the drive shaft is exposed on the outside of the mirror frame and is provided with the locking structure. A bevel gear set, through which the screw and the drive shaft are driven.

3. The AR glasses according to claim 2, characterized in that, The engagement structure includes: A knob, which is slidably connected to the drive shaft; The clutch unit is disposed between the knob and the drive shaft. When the clutch unit is engaged, rotating the knob will drive the drive shaft to rotate.

4. The AR glasses according to claim 3, characterized in that, The engagement structure further includes: The disc body is formed by one end of the drive shaft protruding outward. A sliding cavity is provided inside the knob, and the disc body is located inside the sliding cavity; The knob has a through hole, which is used to connect the sliding cavity to the outside.

5. The AR glasses according to claim 3 or 4, characterized in that, The clutch unit includes: A locking disc, wherein the locking disc is disposed on the knob; The groove is provided with a plurality of grooves along the circumference of the locking disc; The drive shaft has several protrusions at its end that mate with the groove. The protrusions are inserted into the groove, and the clutch unit is in an engaged state.

6. The AR glasses according to claim 5, characterized in that, The clutch unit further includes: The second spring is disposed between the drive shaft and the knob.

7. The AR glasses according to claim 4, characterized in that, The clutch unit includes: Telescopic components, a plurality of such telescopic components are arranged along the circumference of the transmission shaft; The knob is provided with several slots corresponding to the telescopic component. The telescopic component is inserted into the slots, and the clutch unit is in the engaged state.

8. The AR glasses according to claim 7, characterized in that, The telescopic component includes: A locking block, which is slidably connected to the drive shaft; The first spring is disposed between the locking block and the drive shaft.

9. The AR glasses according to claim 8, characterized in that, The telescopic component also includes: The sliding cavity is provided on the drive shaft, the locking block slides within the sliding cavity, and the first spring is located within the sliding cavity.

10. The AR glasses according to claim 9, characterized in that, The clutch unit further includes: A connecting cavity, which is provided on the drive shaft, is used to connect the sliding cavity with the sliding cavity.

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