CN219831483U - Adjustable optical machine and AR glasses - Google Patents

Abstract

The utility model provides an adjustable optical machine and AR glasses, which can independently adjust the two-purpose diopters respectively through a separable driving assembly, and can also realize the positive and negative adjustment of the two-purpose diopters through back and forth rotation, and the operation is simple. The adjustable-focus optical engine may include: a display assembly; a focusing lens group which is overlapped on the display component; the guide assembly is arranged between the display assembly and the focusing lens group and used for guiding the focusing lens group to slide relative to the display assembly along the stacking direction; and the focusing assembly is arranged between the display assembly and the focusing lens group and is used for driving the focusing lens group to be far away from or close to the display assembly along the guide assembly.

Description

Adjustable optical machine and AR glasses

Technical Field

The utility model relates to the technical field of AR (augmented reality) glasses focusing, in particular to a focusing optical machine and AR glasses.

Background

The BB (BirdBath) scheme is an AR glasses scheme with convenience and display performance, is the AR glasses scheme with highest cost performance and maximum yield at present, is more suitable for being used in scenes including trips, automobiles and families, and can meet the use requirements in aspects of film watching, games, office work, training, text trips, exhibition and the like. The device has wider field angle, higher contrast and resolution, lighter module, lower cost and high mass production degree. However, the AR glasses of the BB scheme also face focusing problems due to the different vision of different people.

In order to solve the problem of difficult focusing of the AR glasses, the distance between a display screen and a lens is usually adjusted in the prior art, wherein the AR glasses provided by one scheme adopt the fixed lens position unchanged, and the display screen is driven to move up and down by a screw rod to realize diopter adjustment; the AR glasses provided by the other scheme are fixed by adopting a display screen, and the lenses are driven to move up and down by the screw rod, so that diopter adjustment is realized. The two schemes can only simultaneously adjust the diopter of the two purposes, can not independently adjust the diopter of the left eye or the right eye, and are not beneficial to people with different binocular vision. In order to solve the above problems, an AR glasses provided by another scheme combines the above schemes, fixes the position of the display screen, and drives the lenses at the left and right sides to move up and down respectively through the cooperation of the unidirectional rotating piece and the reciprocating screw rod to realize binocular independent diopter adjustment. The main problem of this scheme lies in, because reciprocating screw rod only can one-way rotation, once miss best focus, can't withdraw, can only continue to rotate, leads to adjusting the complex operation inconvenient.

Disclosure of Invention

An advantage of the present utility model is that an adjustable focus light engine and AR glasses are provided that enable individual adjustment of the respective dual purpose diopters through a detachable drive assembly.

Another advantage of the present utility model is to provide an adjustable focus light engine and AR glasses that achieve positive and negative adjustment of dual purpose diopters by rotating back and forth, with simple operation.

To achieve at least one of the above and other advantages and objects of the utility model, there is provided an adjustable optical bench comprising:

a display assembly;

the focusing lens group is overlapped on the display component;

the guide assembly is arranged between the display assembly and the focusing lens group; and

the focusing assembly is arranged between the display assembly and the focusing lens group and is used for driving the focusing lens group to be far away from or close to the display assembly along the guide assembly.

In one embodiment, the focusing assembly comprises an adjusting assembly, a transmission assembly and a driving assembly, the display assembly comprises a left optical machine assembly and a right optical machine assembly which are symmetrically arranged, and the focusing lens assembly comprises a left lens assembly overlapped on the left optical machine assembly and a right lens assembly overlapped on the right optical machine assembly; the adjusting assembly comprises a left adjusting rod and a right adjusting rod rotatably connected with the left adjusting rod, and the transmission assembly is respectively and drivably arranged between the left adjusting rod and the left lens assembly and between the right adjusting rod and the right lens assembly; the driving assembly comprises a thumb wheel which is slidably embedded in the left adjusting rod and/or the right adjusting rod.

In one embodiment, the left adjusting rod comprises a left rod body and a plurality of left protruding blocks protruding from the left rod body, the right adjusting rod comprises a right rod body and a plurality of right protruding blocks protruding from the right rod body, the thumb wheel comprises a thumb wheel main body, and a left groove and a right groove which are formed in the thumb wheel main body, wherein when the thumb wheel main body slides and the left groove is embedded into the left protruding blocks, the thumb wheel main body drives the left rod body to rotate; when the thumb wheel main body slides and the right groove is embedded into the right protruding block, the thumb wheel main body drives the right rod body to rotate.

In one embodiment, the left adjusting rod comprises a slot arranged on the left rod body, the right adjusting rod comprises an inserting rod protruding on the right rod body, and the inserting rod is rotatably inserted into the slot.

In one embodiment, the right side of the left bump has a left chamfer and the left side of the right bump has a right chamfer.

In one embodiment, the left adjusting lever further comprises a left worm part arranged on the left lever body, and the right adjusting lever further comprises a right worm part arranged on the right lever body; the transmission assembly comprises a left transmission member and a right transmission member, the left transmission member comprises a left worm wheel portion, the left worm portion is in transmission connection with the left worm wheel portion, the right transmission member comprises a right worm wheel portion, and the right worm portion is in transmission connection with the right worm wheel portion.

In one embodiment, the left transmission member further comprises a left screw part protruding from the left worm wheel part; the left optical machine assembly comprises a left optical machine bracket and a left display screen fixedly arranged on the left optical machine bracket, and the left lens assembly comprises a left lens bracket and a left lens fixedly arranged on the left lens bracket; the left optical machine support is provided with a left through hole, the left lens support is provided with a left threaded hole, the left screw rod part penetrates through the left through hole, and the left screw rod part is matched with the left threaded hole; the right transmission piece further comprises a right screw rod part convexly arranged on the right worm wheel part; the right optical engine assembly comprises a right optical engine bracket and a right display screen fixedly arranged on the right optical engine bracket, and the right lens assembly comprises a right lens bracket and a right lens fixedly arranged on the right lens bracket; the right optical engine support is provided with a right through hole, the right lens support is provided with a right threaded hole, the right screw rod part penetrates through the right through hole, and the right screw rod is matched with the right threaded hole.

In one embodiment, the guide assembly comprises a pair of left guide rods fixedly arranged on the left optical machine support and a pair of right guide rods fixedly arranged on the right optical machine support, the left lens support comprises a pair of left guide holes, and the left guide rods are inserted into the left guide holes; the right lens support comprises a pair of right guide holes, and the right guide rod is inserted into the right guide holes.

In one embodiment, the driving assembly further comprises a motor, and the motor is in transmission connection with the thumb wheel and is used for driving the thumb wheel to rotate.

According to another aspect of the present utility model, there is further provided AR glasses comprising:

BB eyeglass frame; and

the adjustable light engine of any one of the above, wherein the adjustable light engine is mounted on the BB eyeglass frame.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic perspective view of an adjustable-focus optical engine according to an embodiment of the present utility model;

FIG. 2 shows a schematic front view of an adjustable focus light engine according to the above embodiment of the present utility model;

FIG. 3 shows a schematic rear view of an adjustable focus light engine according to the above embodiment of the present utility model;

fig. 4 is a schematic perspective view of a left ray apparatus assembly of the adjustable ray apparatus according to the above embodiment of the present utility model;

FIG. 5 shows a perspective view of a right optical engine assembly of an adjustable focus optical engine according to the above-described embodiment of the present utility model;

FIG. 6 shows a schematic front view of a left lens assembly of an adjustable focus optical machine according to the above-described embodiment of the present utility model;

FIG. 7 shows a schematic front view of a right lens assembly of an adjustable focus optical machine according to the above-described embodiment of the present utility model;

fig. 8 is a schematic perspective view of a left adjusting lever of the adjustable optical bench according to the above embodiment of the utility model;

fig. 9 is a perspective view showing a right adjusting lever of the adjustable-focus optical engine according to the above embodiment of the present utility model;

FIG. 10 is a perspective view of a drive assembly of an adjustable focus optical machine according to the above-described embodiment of the present utility model;

fig. 11 shows a schematic perspective view of a thumb wheel of an adjustable focus light engine according to the above embodiment of the utility model.

Reference numerals: 1. a focus adjustable optical machine; 10. a display assembly; 11. a left ray machine component; 111. a left ray machine bracket; 1111. a left through hole; 112. a left display screen; 12. a right-side optical engine assembly; 121. a right optical engine bracket; 1211. a right through hole; 122. a right display screen; 20. focusing lens group; 21. a left lens assembly; 211. a left lens holder; 2111. a left threaded hole; 2112. a left guide hole; 212. a left lens; 22. a right lens assembly; 221. a right lens holder; 2211. a right threaded hole; 2212. a right guide hole; 222. a right lens; 30. a guide assembly; 31. a left guide bar; 32. a right guide bar; 40. a focusing assembly; 41. an adjustment assembly; 411. a left adjusting lever; 4111. a left rod body; 4112. a left bump; 4113. a slot; 4114. a left worm part; 412. a right adjusting lever; 4121. a right rod body; 4122. a right bump; 4123. a rod; 4124. a right worm part; 42. a transmission assembly; 421. a left transmission member; 4211. a left worm wheel part; 4212. a left screw portion; 422. a right transmission member; 4221. a right worm wheel part; 4222. a right screw section; 50. a drive assembly; 51. a thumb wheel; 511. a thumb wheel body; 512. a left groove; 513. right groove.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

In the present utility model, the terms "a" and "an" in the claims and specification should be understood as "one or more", i.e. in one embodiment the number of one element may be one, while in another embodiment the number of the element may be plural. The terms "a" and "an" are not to be construed as unique or singular, and the term "the" and "the" are not to be construed as limiting the amount of the element unless the amount of the element is specifically indicated as being only one in the disclosure of the present utility model.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through a medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In order to make it easier and convenient to adjust the binocular diopters of AR glasses, respectively, the present utility model provides AR glasses that may include a BB glasses frame and an adjustable focus optical bench 1. The adjustable optical machine 1 can realize the independent adjustment of the two-purpose diopters respectively through the detachable driving component 50, and can realize the positive and negative adjustment of the two-purpose diopters through the back and forth rotation, and the operation is simple.

Specifically, referring to fig. 1 to 3, the present utility model provides an adjustable optical engine 1, and the adjustable optical engine 1 may include a display assembly 10, a focusing lens assembly 20, a guiding assembly 30 and a focusing assembly 40. The focusing lens group 20 is stacked on the display assembly 10, and the guiding assembly 30 is disposed between the display assembly 10 and the focusing lens group 20, and is used for guiding the focusing lens group 20 to slide along the stacking direction relative to the display assembly 10. The focusing assembly 40 is disposed between the display assembly 10 and the focusing lens assembly 20, and is used for driving the focusing lens assembly 20 to move away from or close to the display assembly 10 along the guiding assembly 30. In this way, when the adjustable focusing optical machine 1 needs to be focused, the focusing assembly 40 can be adjusted to drive the focusing lens assembly 20 to move away from or close to the display assembly 10, so as to change the distance between the focusing lens assembly 20 and the display assembly 10, so that the display assembly 10 can clearly image.

More specifically, as shown in fig. 2 and 3, in one embodiment, the focusing assembly 40 includes an adjusting assembly 41, a transmission assembly 42 and a driving assembly 50, the display assembly 10 may include a left optical machine assembly 11 and a right optical machine assembly 12 symmetrically disposed, and the focusing lens assembly 20 may include a left lens assembly 21 and a right lens assembly 22, and the left lens assembly 21 and the right lens assembly 22 are respectively stacked on the left optical machine assembly 11 and the right optical machine assembly 12. The adjustment assembly 41 includes a left adjustment lever 411 and a right adjustment lever 412, the right adjustment lever 412 being rotatably coupled to the left adjustment lever 411. The driving assembly 50 includes a thumb wheel 51, and the thumb wheel 51 is slidably engaged with the left adjusting lever 411 or the right adjusting lever 412. In this way, the rotation of the left adjusting lever 411 does not affect the rotation of the right adjusting lever 412, and the dial 51 can be respectively engaged with the left adjusting lever 411 or the right adjusting lever 412 to drive the left adjusting lever 411 or the right adjusting lever 412 to rotate. The dial 51 may be configured as one dial 51 that slides between the left adjustment lever 411 and the right adjustment lever 412, or may be configured as two dials 51 that are provided to the left adjustment lever 411 and the right adjustment lever 412, respectively. The transmission assembly 42 is respectively and drivably disposed between the left adjustment bar 411 and the left lens assembly 21 and between the right adjustment bar 412 and the right lens assembly 22. When the left adjusting lever 411 rotates, the transmission assembly 42 can drive the left lens assembly 21 to move away from or close to the left optical engine assembly 11, so as to adjust the distance between the left lens assembly 21 and the left optical engine assembly 11, thereby achieving the focusing effect. Similarly, when the right adjustment lever 412 is rotated, the distance between the right lens assembly 22 and the right optical engine assembly 12 can be adjusted, thereby achieving a focusing effect. It will be appreciated that the left adjusting lever 411 and the right adjusting lever 412 can respectively drive the transmission assembly to rotate forward or backward, so as to respectively achieve the approaching or separating of the left lens assembly 21 and the right lens assembly 22 from the left optical machine assembly 11 and the right optical machine assembly 12. Thus, the dual-purpose diopter of the adjustable optical machine 1 can be positively and negatively adjusted.

As illustrated in fig. 8, 9 and 11, in one embodiment, the left adjusting lever 411 may include a left lever body 4111 and a plurality of left protrusions 4112 protruding from the left lever body 4111, and the right adjusting lever 412 includes a right lever body 4121 and a plurality of right protrusions 4122 protruding from the right lever body 4121. The thumbwheel 51 includes a thumbwheel body 511 and left and right grooves 512, 513 formed in the thumbwheel body 511. When the thumb wheel body 511 slides leftwards and the left groove 512 is engaged with the left protrusion 4112, the thumb wheel body 511 can drive the left rod 4111 to rotate. When the thumb wheel body 511 slides rightward and engages the right groove 513 with the right protrusion 4122, the thumb wheel body 511 can rotate the right lever 4121. In this way, the left lever 4111 or the right lever 4121 can be driven to rotate by the single thumb wheel 51, so as to achieve the effect of adjusting the diopters of the left and right lenses respectively.

Preferably, as shown in fig. 8 and 9, in one embodiment, the left adjusting lever 411 includes a slot 4113 formed in the left lever body 4111, the right lever body 4121 includes a rod 4123 protruding from the right lever body 4121, and the rod 4123 is rotatably inserted into the slot 4113. This arrangement ensures that the left lever 4111 rotates smoothly with respect to the right lever 4121, and prevents the thumb wheel body 511 from being disturbed when sliding on the left lever 4111 and the right lever 4121.

More preferably, as shown in fig. 8, 9 and 11, in one embodiment, the right side of the left bump 4112 has a left chamfer and the left side of the right bump 4122 has a right chamfer. The left chamfer is used to guide the left tab 4112 so that the left tab 4112 can slide into the left groove 512. The right tab 4122 is used to guide the right tab 4122 so that the right tab 4122 can slide into the right recess 513.

In particular, as shown in fig. 8, 9 and 10, in one embodiment, the left adjusting lever 411 further includes a left worm portion 4114 provided to the left lever body 4111, and the right adjusting lever 412 further includes a right worm portion 4124 provided to the right lever body 4121; the transmission assembly 42 includes a left transmission member 421 and a right transmission member 422, the left transmission member 421 includes a left worm wheel portion 4211, the left worm portion 4114 is drivingly connected to the left worm wheel portion 4211, such that the rotation of the left rod body 4111 is vertically transmitted to the left transmission member 421 through the cooperation of the left worm wheel portion 4211 and the left worm portion 4114, so as to change the layout of the left adjustment rod 411 and the left transmission member 421, and the left adjustment rod 411 is extended in the left-right direction. Likewise, the right transmission member 422 includes a right worm gear portion 4221, and the right worm portion 4124 is drivingly connected to the right worm gear portion 4221 such that the right adjustment lever 412 is disposed extending in the left-right direction. The thumb wheel 51 can drive the left adjusting lever 411 and the right adjusting lever 412 to rotate respectively only by sliding leftwards or rightwards, so as to drive the left driving member 421 and the right driving member 422 to rotate respectively.

Further, to convert the rotation of the transmission assembly 42 into a sliding motion of the lens assembly, as shown in fig. 4, 5, 6, 7, 8, 9 and 10, in one embodiment, the left transmission member 421 further includes a left screw portion 4212 protruding from the left worm gear portion 4211; the left optical engine assembly 11 comprises a left optical engine bracket 111 and a left display screen 112 fixedly arranged on the left optical engine bracket 111, and the left lens assembly 21 comprises a left lens bracket 211 and a left lens 212 fixedly arranged on the left lens bracket 211; the left optical machine bracket 111 has a left through hole 1111, the left lens bracket 211 has a left screw hole 2111, the left screw portion 4212 passes through the left through hole 1111, and the left screw portion 4212 is engaged with the left screw hole 2111. When the left worm gear 4211 drives the left screw 4212 to rotate, the left optical machine bracket 111 slides along the axis direction of the left screw 4212 under the guiding of the guiding assembly 30, so as to achieve the purpose of adjusting the distance between the left lens 212 and the left display screen 112. Likewise, the right transmission member 422 further includes a right screw portion 4222 protruding from the right worm gear portion 4221; the right optical engine assembly 12 comprises a right optical engine bracket 121 and a right display screen 122 fixedly arranged on the right optical engine bracket 121, and the right lens assembly 22 comprises a right lens bracket 221 and a right lens 222 fixedly arranged on the right lens bracket 221; the right optical engine bracket 121 has a right through hole 1211, the right lens bracket 221 has a right threaded hole 2211, the right screw portion 4222 passes through the right through hole 1211, and the right screw is engaged with the right threaded hole 2211.

Preferably, as shown in fig. 4, 5, 6, 7, 8 and 9, in one embodiment, the guide assembly 30 may include a pair of left guide rods 31 and a pair of right guide rods 32, where the left guide rods 31 are fixedly disposed on the left optical machine support 111, and the right guide rods 32 are fixedly disposed on the right optical machine support 121. The left lens holder 211 may include a pair of left guide holes 2112, and the left guide rod 31 is inserted into the left guide holes 2112. When the left screw portion 4212 rotates, the left guide rod 31 can guide the left lens holder 211 to slide along the axial direction of the left screw portion 4212 in cooperation with the left guide hole 2112 for the purpose of adjusting the distance between the left lens 212 and the left display screen 112. Similarly, the right lens holder 221 includes a pair of right guide holes 2212, the right guide rod 32 is inserted into the right guide holes 2212, and the right guide rod 32 can be engaged with the right guide holes 2212 to guide the right lens holder 221 to slide.

It will be appreciated that, in order for the thumbwheel 51 to slide on the left adjustment bar 411 and the slave adjustment bar, grooves needed when the thumb wheel 51 slides are reserved on the shell of the AR glasses, so that the thumb wheel 51 can be conveniently manually shifted.

It should be noted that in addition to manually driving the thumbwheel 51, the thumbwheel 51 can be driven in other ways, and in one embodiment, the drive assembly 50 further includes a motor drivingly coupled to the thumbwheel 51 for rotating the thumbwheel 51. At this time, the thumb wheel 51 may be disposed in the outer case of the AR glasses, and the outer case of the AR glasses does not need to be provided with a groove for poking the thumb wheel 51. In addition, the volume of the thumb wheel 51 can be reduced to save the installation space of the AR glasses. When the AR glasses are equipped with the eye tracker, the eyes of the user can be seen by the eye tracker, and the thumb wheel 51 is driven by the motor to drive the left adjusting lever 411 and the right adjusting lever 412 to respectively adjust the diopter, so as to automatically adjust the binocular diopter.

In summary, the present utility model provides an adjustable optical engine 1, wherein the adjustable optical engine 1 realizes that the left adjusting rod 411 or the right adjusting rod 412 rotates independently by the left adjusting rod 411 and the right adjusting rod 412 which can rotate mutually, so as to adjust diopters at the left side and the right side respectively. The adjustable optical engine 1 further includes a thumb wheel 51 slidably engaged with the left adjusting lever 411 and the right adjusting lever 412 to drive the left adjusting lever 411 or the right adjusting lever 412 to rotate, respectively.

According to another aspect of the present utility model, the present utility model further provides AR glasses, which may include a BB glasses frame and the adjustable light engine 1 as described in any one of the above, the adjustable light engine 1 being mounted to the BB glasses frame. The AR glasses can independently adjust the binocular diopters, and can be used by users with different binocular vision.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (9)

1. The adjustable optical bench, its characterized in that includes:

a display assembly;

the focusing lens group is overlapped on the display component;

the guide assembly is arranged between the display assembly and the focusing lens group; and

the focusing assembly is arranged between the display assembly and the focusing lens group and is used for driving the focusing lens group to be far away from or close to the display assembly along the guide assembly;

the focusing assembly comprises an adjusting assembly, a transmission assembly and a driving assembly, the display assembly comprises a left optical machine assembly and a right optical machine assembly which are symmetrically arranged, and the focusing lens assembly comprises a left lens assembly overlapped on the left optical machine assembly and a right lens assembly overlapped on the right optical machine assembly; the adjusting assembly comprises a left adjusting rod and a right adjusting rod rotatably connected with the left adjusting rod, and the transmission assembly is respectively and drivably arranged between the left adjusting rod and the left lens assembly and between the right adjusting rod and the right lens assembly; the driving assembly comprises a thumb wheel which is slidably embedded in the left adjusting rod and/or the right adjusting rod.

2. The adjustable focus optical bench according to claim 1, wherein the left adjusting lever comprises a left lever body and a plurality of left protrusions protruding from the left lever body, the right adjusting lever comprises a right lever body and a plurality of right protrusions protruding from the right lever body, the thumb wheel comprises a thumb wheel body and a left groove and a right groove provided on the thumb wheel body, wherein when the thumb wheel body slides and the left groove is embedded into the left protrusions, the thumb wheel body drives the left lever body to rotate; when the thumb wheel main body slides and the right groove is embedded into the right protruding block, the thumb wheel main body drives the right rod body to rotate.

3. The adjustable focus optical bench of claim 2, wherein the left adjusting lever comprises a slot provided on the left lever body, the right adjusting lever comprises a plunger protruding on the right lever body, and the plunger is rotatably inserted in the slot.

4. The adjustable focus optical bench of claim 2 wherein the right side of the left bump has a left chamfer and the left side of the right bump has a right chamfer.

5. The adjustable focus optical bench according to any of claims 2-4, wherein the left adjustment lever further comprises a left worm part provided to the left lever body, and the right adjustment lever further comprises a right worm part provided to the right lever body; the transmission assembly comprises a left transmission member and a right transmission member, the left transmission member comprises a left worm wheel portion, the left worm portion is in transmission connection with the left worm wheel portion, the right transmission member comprises a right worm wheel portion, and the right worm portion is in transmission connection with the right worm wheel portion.

6. The adjustable focus optical bench of claim 5 wherein the left transmission member further comprises a left screw portion protruding from the left worm gear portion; the left optical machine assembly comprises a left optical machine bracket and a left display screen fixedly arranged on the left optical machine bracket, and the left lens assembly comprises a left lens bracket and a left lens fixedly arranged on the left lens bracket; the left optical machine support is provided with a left through hole, the left lens support is provided with a left threaded hole, the left screw rod part penetrates through the left through hole, and the left screw rod part is matched with the left threaded hole; the right transmission piece further comprises a right screw rod part convexly arranged on the right worm wheel part; the right optical engine assembly comprises a right optical engine bracket and a right display screen fixedly arranged on the right optical engine bracket, and the right lens assembly comprises a right lens bracket and a right lens fixedly arranged on the right lens bracket; the right optical engine support is provided with a right through hole, the right lens support is provided with a right threaded hole, the right screw rod part penetrates through the right through hole, and the right screw rod is matched with the right threaded hole.

7. The adjustable focus optical engine of claim 6, wherein the guide assembly comprises a pair of left guide rods fixedly arranged on the left optical engine bracket and a pair of right guide rods fixedly arranged on the right optical engine bracket, the left lens bracket comprises a pair of left guide holes, and the left guide rods are inserted into the left guide holes; the right lens support comprises a pair of right guide holes, and the right guide rod is inserted into the right guide holes.

8. The adjustable focus optical engine of claim 1, wherein the drive assembly further comprises a motor drivingly connected to the thumb wheel for rotating the thumb wheel.

Ar glasses, characterized in that it comprises:

BB eyeglass frame; and

the adjustable focus light engine of any one of claims 1-8 mounted to the BB eyeglass frame.