CN115327783A

CN115327783A - Diopter adjusting member capable of adjusting diopter, optical module and display equipment

Info

Publication number: CN115327783A
Application number: CN202211251095.5A
Authority: CN
Inventors: 石杰; 胡波; 张鸿翔; 杜晖; 王文刚
Original assignee: Hangzhou Companion Technology Co ltd
Current assignee: Hangzhou Companion Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2022-11-11
Anticipated expiration: 2042-10-13
Also published as: CN115327783B

Abstract

The embodiment of the disclosure discloses a diopter adjusting member capable of adjusting diopter, an optical module and a display device. The diopter adjusting member capable of adjusting diopter comprises an adjusting unit, an optical machine upper cover unit, a display screen unit and an imaging unit; the adjusting component drives the connecting rod to rotate; the first reciprocating member and the second reciprocating member are respectively connected to the display screen unit and/or the imaging unit from the upper part of the optical machine upper cover unit downwards; when the rotating direction of the connecting rod is a first rotating direction, the first reciprocating component drives the first display screen and/or the first imaging lens to reciprocate; when the rotating direction of the connecting rod is the second rotating direction, the second reciprocating component drives the second display screen and/or the second imaging lens to reciprocate. This optical module of adjustable diopter can accomplish the diopter debugging through an adjusting member, and the augmented reality equipment of using is worn to the convenience of customers, and has simplified the operation of adjusting diopter.

Description

Diopter adjusting member capable of adjusting diopter, optical module and display equipment

Technical Field

The embodiment of the present disclosure relates to the field of optical technologies, and in particular, to a diopter adjustment member, an optical module, and a display device capable of adjusting diopter.

Background

With the development of artificial intelligence, algorithm and other technologies, augmented reality equipment is widely applied. In order to meet the requirements of users with defective vision, the augmented reality device needs to have a diopter adjusting function. The diopter adjustment means of the existing augmented reality device is generally provided separately for two eyes with driving means for the user to adjust diopter.

However, the inventors have found that the diopter adjustment member described above often has the following technical problems: the weight and occupied space of the two driving components are large, so that the weight and the volume of the applied augmented reality equipment are large, the wearing of a user is inconvenient, the diopter debugging can be completed only by respectively adjusting the two driving components corresponding to the two eyes of the user, and the diopter adjusting operation is complicated.

The above information disclosed in this background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art in this country.

Disclosure of Invention

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

Some embodiments of the present disclosure propose a diopter adjustment member, an optical module, and a head-mounted display device capable of adjusting diopter to solve one or more of the technical problems mentioned in the above background section.

In a first aspect, some embodiments of the present disclosure provide a diopter adjustment member capable of adjusting a diopter, wherein the diopter adjustment member capable of adjusting a diopter includes an adjustment unit, an optical machine upper cover unit, a display screen unit, and an imaging unit, the adjustment unit includes an adjustment member, a connection rod, a first one-way transmission member, a first reciprocating member, a second one-way transmission member, and a second reciprocating member; the adjusting component can drive the connecting rod to rotate; the first reciprocating member is in transmission with the connecting rod through the first one-way transmission part, and the second reciprocating member is in transmission with the connecting rod through the second one-way transmission mechanism; the display screen unit comprises a first display screen and a second display screen, and the imaging unit comprises a first imaging lens and a second imaging lens; the first reciprocating component and the second reciprocating component are respectively connected to the display screen unit and/or the imaging unit from the upside of the optical machine upper cover unit to the downside; when the rotation direction of the connecting rod is a first rotation direction, the connecting rod can drive the first one-way transmission piece to rotate towards the load rotation direction, and at the moment, the first reciprocating component can drive the first display screen and/or the first imaging lens to reciprocate; when the rotation direction of the connecting rod is a second rotation direction, the connecting rod can drive the second one-way transmission member to rotate towards the load rotation direction, and at the moment, the second reciprocating member can drive the second display screen and/or the second imaging lens to reciprocate; the first rotational direction is opposite to the second rotational direction.

Optionally, the first display screen is fixedly connected to the first imaging lens, and the second display screen is fixedly connected to the second imaging lens; when the rotating direction of the connecting rod is the load rotating direction of the first one-way transmission part, the first reciprocating component can drive the first display screen and the first imaging lens to reciprocate together; when the rotating direction of the connecting rod is the load rotating direction of the second one-way transmission member, the second reciprocating member can drive the second display screen and the second imaging lens to reciprocate together.

Optionally, the diopter adjusting member further comprises a positioning guide pin unit; the optical machine upper cover unit is provided with fixing holes corresponding to the upper ends of the positioning guide pin units, and the upper ends of the positioning guide pin units are fixed in the fixing holes; the imaging unit is provided with positioning holes corresponding to the lower ends of the positioning guide pin units, and the lower ends of the positioning guide pin units can movably penetrate through the positioning holes.

Optionally, the imaging unit further comprises a first nut bracket and a second nut bracket; the first display screen is disposed above the first nut bracket, the second display screen is disposed above the second nut bracket, the first imaging lens is disposed below the first nut bracket, and the second imaging lens is disposed below the second nut bracket; the first reciprocating member and the second reciprocating member are respectively connected with the optical machine upper cover unit in a rotating way, the first nut bracket is provided with a spiral groove corresponding to the first reciprocating member, and the second nut bracket is provided with a spiral groove corresponding to the second reciprocating member; under the working state of the first reciprocating member, the first reciprocating member is meshed with the spiral groove on the first nut bracket for transmission, and can drive the first display screen and the first imaging lens to reciprocate together with the first nut bracket; under the working state of the second reciprocating member, the second reciprocating member is meshed with the spiral groove on the second nut support for transmission, and the second display screen and the second imaging lens can be driven to reciprocate together with the second nut support.

Optionally, the adjusting member includes an adjusting knob, and the adjusting knob is sleeved on the connecting rod.

Optionally, the adjusting member includes an electric gear transmission module, and the electric gear transmission module includes a stepping motor and a transmission gear; the connecting rod and the output shaft of the stepping motor are respectively provided with a transmission gear which are meshed with each other, and the stepping motor can drive the connecting rod to rotate through the transmission gear in a working state.

Optionally, the first reciprocating member includes a first bevel gear transmission set and a first reciprocating screw rod, and the first reciprocating screw rod is provided with two threads which are arranged in a crossed manner and have opposite rotation directions; the connecting rod is in transmission connection with the input end of the first bevel gear transmission set through the first one-way transmission piece, and the first reciprocating screw rod is connected with the output end of the first bevel gear transmission set; or the connecting rod is connected with the input end of the first bevel gear transmission set, and the output end of the first bevel gear transmission set is connected with the first reciprocating screw rod through the first one-way transmission piece; the second reciprocating component comprises a second bevel gear transmission set and a second reciprocating screw rod, and the second reciprocating screw rod is provided with two threads which are arranged in a crossed manner and have opposite rotation directions; the connecting rod is in transmission connection with the input end of the second bevel gear transmission set through the second one-way transmission piece, and the second reciprocating screw rod is connected with the output end of the second bevel gear transmission set; or the connecting rod is connected with the input end of the second bevel gear transmission set, and the output end of the second bevel gear transmission set is connected with the second reciprocating screw rod through a second one-way transmission piece.

Optionally, the thread arranged on the first reciprocating screw rod and corresponding to diopter adjustment from small to large is a forward thread, the thread arranged on the first reciprocating screw rod and corresponding to diopter adjustment from large to small is a reverse thread, and the thread pitch of the reverse thread is greater than the thread pitch of the forward thread; the thread arranged on the second reciprocating screw rod and corresponding to diopter adjustment from small to large is a forward thread, the thread arranged on the second reciprocating screw rod and corresponding to diopter adjustment from large to small is a reverse thread, and the thread pitch of the reverse thread on the second reciprocating screw rod is larger than that of the forward thread.

Optionally, the positioning guide pin unit includes a first positioning guide pin set and a second positioning guide pin set; the first nut bracket is provided with positioning holes corresponding to the lower ends of the first positioning guide pin group; the second nut bracket is provided with positioning holes corresponding to the lower ends of the second positioning guide pin groups.

Alternatively, the fixing holes may be provided on the carriage cover unit on a side close to the first reciprocating member and a side close to the second reciprocating member, and the positioning holes may be provided on the imaging unit on a side close to the first reciprocating member and a side close to the second reciprocating member.

Optionally, the positioning guide pin unit includes a first positioning guide pin group including at least two first positioning guide pins and a second positioning guide pin group including at least two second positioning guide pins.

Alternatively, the first display screen is fixed above the first nut bracket by means of a snap fit, the first imaging lens is fixed below the first nut bracket by means of a snap fit, the second display screen is fixed above the second nut bracket by means of a snap fit, and the second imaging lens is fixed below the second nut bracket by means of a snap fit.

In a second aspect, some embodiments of the present disclosure provide a diopter adjustable optical module, wherein the diopter adjustable optical module includes a diopter adjusting member, an optical engine body bracket, a planar lens unit, and a curved lens unit as described in any implementation manner of the first aspect, and the diopter adjusting member is disposed on the optical engine body bracket; the plane lens unit and the curved lens unit are respectively fixed on the optical machine body bracket; the absolute value of the focal power of the imaging lens is larger than that of the curved lens unit.

Optionally, the diopter adjusting unit is adhered above the optical machine body bracket.

In a third aspect, some embodiments of the present disclosure provide a head-mounted display device, wherein the head-mounted display device includes the diopter adjustable optical module as described in any implementation manner of the second aspect.

The above embodiments of the present disclosure have the following advantages: through the diopter adjusting member capable of adjusting diopter of some embodiments of the present disclosure, the separate and independent adjustment of binocular diopter can be realized through one adjusting member, which is convenient for a user to wear the applied augmented reality device, and simplifies the diopter adjusting operation.

Specifically, the reasons for inconvenience of wearing and troublesome operations for adjusting diopter are: the weight and occupied space of the two driving components are large, so that the weight and the volume of the applied augmented reality equipment are large, the wearing of a user is inconvenient, the diopter debugging can be completed only by respectively adjusting the two driving components corresponding to the two eyes of the user, and the diopter adjusting operation is complicated. Based on this, the diopter adjustment member capable of adjusting diopter of some embodiments of the present disclosure includes an adjustment unit, an optical machine upper cover unit, a display screen unit, and an imaging unit. The adjusting unit comprises an adjusting component, a connecting rod, a first one-way transmission piece, a first reciprocating component, a second one-way transmission piece and a second reciprocating component. The adjusting component can drive the connecting rod to rotate. The first reciprocating member is in transmission with the connecting rod through the first one-way transmission member, and the second reciprocating member is in transmission with the connecting rod through the second one-way transmission mechanism. The display screen unit comprises a first display screen and a second display screen. The imaging unit includes a first imaging lens and a second imaging lens. The first reciprocating member and the second reciprocating member are connected to the display screen unit and/or the imaging unit, respectively, from above the cover unit of the optical machine downward. When the rotating direction of the connecting rod is a first rotating direction, the first one-way transmission piece can be driven to rotate towards the load rotating direction, and at the moment, the first reciprocating component can drive the first display screen and/or the first imaging lens to move in a reciprocating mode. When the rotation direction of the connecting rod is the second rotation direction, the second one-way transmission member can be driven to rotate in the load rotation direction, and at the moment, the second reciprocating member can drive the second display screen and/or the second imaging lens to reciprocate.

Also because the adjustment unit of the diopter adjustment member comprises one adjustment member and the adjustment member can drive the connecting rod to rotate, so that the connecting rod can transmit power to the other members. And because the two transmission parts (namely the first one-way transmission part and the second one-way transmission part) connected with the connecting rod are one-way, and the two one-way transmission parts can be respectively driven to rotate towards the load rotating direction by the opposite rotating directions of the connecting rod, when the adjusting member drives the connecting rod to rotate towards one direction, the connecting rod only drives the corresponding reciprocating member to work, and the other reciprocating member does not work. And the display screen and/or the imaging lens are driven by the reciprocating component and can move in a reciprocating manner, so that when the adjusting component drives the connecting rod to rotate towards one direction, the closed-loop adjustment of the corresponding monocular diopter size can be realized.

Therefore, binocular diopter debugging can be completed through one adjusting component, the weight and the volume of the applied augmented reality equipment are reduced, and the user can conveniently wear the applied augmented reality equipment. The closed-loop adjustment of the binocular diopter size can be independently completed through the rotation of one adjusting member in different directions, and the structural design, space and operation for adjusting the binocular diopter are simplified.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and components are not necessarily drawn to scale.

Figure 1 is an exploded block diagram of some embodiments of diopter adjustment members according to the present disclosure that are adjustable in diopter;

figure 2 is an exploded structural view of further embodiments of the diopter adjustment member capable of adjusting diopter according to the present disclosure;

figure 3 is an exploded block diagram of still further embodiments of diopter adjustment members according to the present disclosure;

figure 4 is a combined block diagram of further embodiments of diopter adjustment members according to the present disclosure;

figure 5 is an exploded block diagram of some embodiments of diopter adjustment members including an electric gear module according to the present disclosure;

figure 6 is an exploded view of further embodiments of diopter adjustment members including a motorized gear train according to the present disclosure;

figure 7 is an exploded block diagram of still further embodiments of diopter adjustment members including an electric gear module according to the present disclosure;

figure 8 is a combined block diagram of further embodiments of diopter adjustment members including an electric gear module according to the present disclosure;

figure 9 is a schematic structural view of some embodiments of an adjustable diopter optical module according to the present disclosure;

fig. 10 is a schematic structural diagram of some embodiments of a head mounted display device according to the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Figure 1 is an exploded structural view of some embodiments of a diopter adjustment member capable of adjusting diopter according to the present disclosure. Fig. 1 includes an adjusting member 11, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first bevel gear transmission set (composed of a first vertical bevel gear 142 and a first lateral bevel gear 143), a second one-way transmission 15, a second reciprocating screw 161, a second bevel gear transmission set (composed of a second vertical bevel gear 162 and a second lateral bevel gear 163), an opto-mechanical cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, and a second imaging lens 42.

In some embodiments, the diopter adjustment member adjustable in diopter described above may include an adjustment unit, the optomechanical upper cover unit 2, a display screen unit, and an imaging unit. The above-mentioned adjusting unit may be a combination unit of members for adjusting diopter. The above-mentioned adjusting unit may include an adjusting member 11, a connecting rod 12, a first one-way transmission 13, a first reciprocating member, a second one-way transmission 15, and a second reciprocating member.

The above-mentioned adjusting member 11 may be a member for driving. For example, the adjustment member 11 may be an adjustment knob. The connecting rod 12 may be a rod-shaped member for connecting other members. The adjusting member 11 can drive the connecting rod 12 to rotate. For example, the adjusting member 11 may indirectly drive the connecting rod 12 to rotate through a gear set, or the adjusting member 11 may be coaxially disposed on the connecting rod 12 to drive the connecting rod 12 to rotate.

In practice, the first one-way transmission member 13 may be a one-way transmission member disposed on one side of the connecting rod 12. The second one-way transmission element 15 may be a one-way transmission element disposed on the other side of the connecting rod 12, and the adjusting element is correspondingly disposed at the middle position of the connecting rod 12. The first unidirectional transmission 13 and the second unidirectional transmission 15 may also both be arranged at a central position of the connecting rod 12, in which case the adjustment member 11 is arranged correspondingly at the end of the connecting rod 12.

The one-way transmission member may comprise two parts which are relatively free to rotate in one direction, and cannot transmit torque, and this direction is referred to as the no-load rotation direction. But in the other opposite direction, they are locked and cannot rotate relatively, and can transmit torque, and this direction is called load rotation direction. Here, the one-way transmission member may be, but is not limited to: one-way bearing, ratchet. The two parts may correspond to the two sides or inner and outer races of the unidirectional actuator, one part being capable of driving the reciprocating member and the other part being capable of driving the connecting rod 12. Here, the transmission includes direct connection to a rear transmission or transmission through other transmission components.

The first reciprocating member may be a reciprocating member disposed on one side of the diopter adjustment member and configured to reciprocate a display screen and/or an imaging lens on the one side. The second reciprocating member may be a reciprocating member disposed at the other side of the diopter adjusting member and used for driving the display screen and/or the imaging lens at the other side to reciprocate. For example, the first reciprocating member described above may be a member for driving the display screen and/or the imaging lens on the left side in fig. 1 to reciprocate. The second reciprocating member described above may be a member for driving the display screen and/or the imaging lens on the right side in fig. 1 to reciprocate. Here, the reciprocating member may include a drive train and a reciprocating assembly. For example, the reciprocating assembly may include a reciprocating lead screw, a timing belt, and the like.

It should be noted that, in this embodiment, the human eyes are arranged horizontally, so the connecting rod needs to be arranged horizontally, but the diopter adjustment needs the display screen and/or the imaging lens to move up and down, so that the transmission set with the transmission direction axes perpendicular to each other needs to be used for transmission. The bevel gear transmission set adopted in the implementation realizes the requirement, and actually, the worm gear, the worm and the universal hinge mechanism and the like can also realize the function.

The reciprocating screw rod can realize reciprocating movement by rotating in a single direction, two threads with opposite rotation directions can be arranged on the screw rod, and the adjacent ends of the two threads are connected by a transition curve. When the reciprocating screw rod is adopted, the nut sleeve can be preferentially selected by the spiral groove.

In some embodiments, the first reciprocating member may comprise a first bevel gear transmission set and a first reciprocating screw 141. The first reciprocating screw rod 141 may be provided with two threads which are arranged in a cross manner and have opposite rotation directions. The connecting rod 12 is in transmission connection with the input end of the first bevel gear transmission set through a first one-way transmission piece 13. The first reciprocating screw rod 141 is connected with the output end of the first bevel gear transmission set. Or the connecting rod 12 is connected with the input end of the first bevel gear transmission set. The output end of the first bevel gear transmission set is connected with the first reciprocating screw rod 141 through the first one-way transmission piece 13. That is, the first one-way transmission member 13 may be disposed between the first bevel gear transmission set and the connecting rod 12, or between the first bevel gear transmission set and the first reciprocating screw rod 141.

In this embodiment, the first one-way transmission member 13 is disposed between the first bevel gear transmission set and the connecting rod 12, and specifically, the first bevel gear transmission set includes a first vertical bevel gear 142 and a first horizontal bevel gear 143. The first vertical bevel gear 142 may be a bevel gear vertically placed at one side of the diopter adjustment member where the diopter is adjustable. The first lateral bevel gear 143 may be a bevel gear laterally disposed at one side of the diopter adjustment member adjustable in diopter. The first reciprocating screw 141 may be a reciprocating screw placed at one side of the diopter adjustment member of which diopter is adjustable. For example, the first vertical bevel gear 142, the first horizontal bevel gear 143, and the first reciprocating screw 141 may be disposed at the left side of the diopter adjustment member with adjustable diopter in fig. 1.

The connecting rod 12 is coaxially and fixedly connected to a portion of the first unidirectional transmission member 13, and the first vertical bevel gear 142 is fixedly connected to another portion of the first unidirectional transmission member 13. For example, a portion of the first one-way transmission member 13 may be coaxially fixed to one end of the connecting rod 12, and another portion of the first one-way transmission member 13 may be inserted into the first vertical bevel gear 142. The first horizontal bevel gear 143 may be disposed below the first vertical bevel gear 142 and may be engaged with the first vertical bevel gear 142. The first reciprocating screw 141 may be coaxially and fixedly coupled below the first horizontal bevel gear 143. For example, the first reciprocating screw 141 and the first horizontal bevel gear 143 may be coaxially and fixedly coupled by welding or bonding.

The second reciprocating member includes a second bevel gear train and a second reciprocating screw 161. The second reciprocating screw 161 may be provided with two threads which are arranged in a cross manner and have opposite rotation directions.

The connecting rod 12 is in transmission connection with the input end of the second bevel gear transmission set through a second one-way transmission member 15, and the second reciprocating screw rod 161 is connected with the output end of the second bevel gear transmission set. Or the connecting rod 12 is connected with the input end of a second bevel gear transmission set, and the output end of the second bevel gear transmission set is connected with the second reciprocating screw rod 161 through a second one-way transmission piece.

In this embodiment, the second one-way transmission 15 is disposed between the second bevel gear transmission set and the connecting rod 12, and specifically, the second bevel gear transmission set may include a second vertical bevel gear 162 and a second transverse bevel gear 163. The second vertical bevel gear 162 may be a bevel gear vertically disposed at the other side of the diopter adjustment member, which is adjustable in diopter. The second lateral bevel gear 163 may be a bevel gear laterally disposed at the other side of the diopter adjustment member in which diopter is adjustable. The second reciprocating screw 161 may be a reciprocating screw disposed at the other side of the diopter adjustment member of which diopter is adjustable. For example, the second vertical bevel gear 162, the second horizontal bevel gear 163, and the second reciprocating screw 161 may be disposed at the right side of the diopter adjustment member in fig. 1, in which diopter is adjustable.

The connecting rod 12 is coaxially and fixedly connected to a portion of the second one-way transmission member 15, and the second vertical bevel gear 162 is fixedly connected to another portion of the second one-way transmission member 15. For example, a part of the second one-way transmission member 15 may be coaxially fixed to one end of the connecting rod 12, and another part of the second one-way transmission member 15 may be inserted into the second vertical bevel gear 162. The second horizontal bevel gear 163 may be disposed below the second vertical bevel gear 162 and be engaged with the second vertical bevel gear 162. The second reciprocating screw 161 may be coaxially and fixedly coupled below the second transverse bevel gear 163. For example, the second reciprocating screw 161 and the second transverse bevel gear 163 may be fixedly coupled by welding or bonding.

In practical use, the one-way transmission part has two arrangement schemes.

The first scheme is as follows: the one-way transmission part can be arranged between the connecting rod and the input end of the bevel gear transmission group and is respectively connected with the connecting rod and the input end of the bevel gear transmission group, the output end of the bevel gear transmission group is directly connected with the reciprocating screw rod, and at the moment, only when the connecting rod drives the one-way transmission part to rotate in the load direction, the driving force of the connecting rod can be transmitted to the input end of the bevel gear transmission group, and the bevel gear transmission group can work; if the connecting rod drives the one-way transmission member to rotate in the no-load direction, the driving force of the connecting rod cannot be transmitted to the input end of the bevel gear transmission set, and the bevel gear transmission set does not work; the load directions of the two unidirectional transmission parts are opposite, and different bevel gear transmission sets can be driven to work through different rotating directions of the connecting rod, so that different reciprocating screw rods are driven to work and rotate.

The scheme can reduce the working time of the bevel gear transmission set, reduce abrasion and the like, and prolong the service life.

The second scheme is as follows: one-way driving medium also can set up between the output of bevel gear transmission group and reciprocal lead screw, be connected with both respectively, the input lug connection of connecting rod and bevel gear transmission group, this moment, no matter how the direction of rotation of connecting rod, as long as it rotates, bevel gear transmission group all can work, input and output all can rotate, only when the direction of rotation of the output of the bevel gear transmission group that is connected with one-way driving medium is the load direction of this one-way driving medium, bevel gear transmission group output shaft just can give reciprocal lead screw with power transmission, drive reciprocal lead screw work and rotate.

In practical use, because the number of gears, the installation and engagement positions of the gears, the directions and the like of different bevel gear transmission sets may be different, the matching relationship between the rotation directions of the output shaft and the input shaft of different bevel gear transmission sets may be inconsistent; and because the unidirectional transmission piece may be arranged between the connecting rod and the input end of the bevel gear transmission set, and may also be arranged between the output end of the bevel gear transmission set and the reciprocating screw rod.

Therefore, the rotation directions of the output ends of the bevel gear transmission sets corresponding to different rotation directions of the connecting rods may be consistent or inconsistent.

The load direction of the first unidirectional transmission member and the load direction of the second unidirectional transmission member may or may not be the same. The rotation directions of the first reciprocating screw rod and the second reciprocating screw rod during working can be consistent or inconsistent.

This embodiment adopts a first scheme, and one side of two one-way driving medium is connected with the both ends of connecting rod respectively promptly, and the opposite side of two one-way driving medium is connected with the input of first bevel gear transmission group and second bevel gear's input respectively, and the load direction of rotation of two one-way driving medium is opposite.

The two reciprocating screw rods are respectively connected with the output ends of the two bevel gear transmission sets. The first bevel gear transmission group and the second bevel gear transmission group both comprise bevel gears with mutually vertical rotating axes, the two bevel gear transmission groups are symmetrically arranged along the symmetry axis of the connecting rod in the vertical direction, and the rotating directions of the two reciprocating screw rods during working are the same.

Alternatively, the above-mentioned adjustment member 11 may comprise an adjustment knob. The adjusting knob may be sleeved on the connecting rod 12.

In some embodiments, the thread arranged on the first reciprocating screw rod 141 corresponding to the diopter adjustment from small to large can be a positive thread. The thread on the first reciprocating screw rod 141 corresponding to the diopter adjustment may be a reverse thread. The pitch of the reverse threads may be greater than the pitch of the forward threads. The thread arranged on the second reciprocating screw 161 corresponding to the diopter adjustment from small to large can be a positive thread. The thread arranged on the second reciprocating screw 161 corresponding to the diopter adjustment from large to small may be a reverse thread. The pitch of the reverse thread on the second reciprocating screw shaft 161 may be greater than the pitch of the forward thread. Here, the arrangement may be a manner of arrangement distributed on the outer surface of the body member. Therefore, when diopter is adjusted from small (zero) to large, because the thread pitch is small, diopter can be adjusted more accurately, and when diopter is adjusted from large to small (zero), because the thread pitch is large, diopter is adjusted relatively quickly during rotation, so that the diopter is not adjusted accurately in the adjusting direction from small (zero) to large, and only used for realizing quick zero resetting of diopter.

In some embodiments, the display screen unit may include a first display screen 31 and a second display screen 32, which are respectively disposed corresponding to left and right eyes of a person. The first display screen 31 and the second display screen 32 may be display screens on both sides of the diopter adjustment member, and may correspond to two eyes, respectively. The display screen may be used to emit light, and may include, but is not limited to, one of the following: OLED (Organic Light-Emitting Diode), LCOS (Liquid Crystal On Silicon), micro (Micro led), LBS (Laser Beam Scanning) optical machine. Preferably, the display screen may be an OLED.

In some embodiments, the imaging unit may include a first imaging lens 41 and a second imaging lens 42. The first and

second imaging lenses

41 and 42 may be imaging lenses disposed at both sides of the diopter adjustment member corresponding to the first and second display screens, respectively. The above-described imaging lens may be a lens having an aberration correction function. The imaging lens can be a lens made of plastic or glass. The above-mentioned surface type of the imaging lens may include, but is not limited to, the following types: spherical lens, aspheric lens, free-form surface lens, fresnel lens, flat lens. Preferably, the surface type of the imaging lens may be a spherical lens. Alternatively, the imaging lens may be a single lens with a holder, as shown in fig. 1.

In some embodiments, the first reciprocating member and the second reciprocating member may be connected to the display screen unit and/or the imaging unit from above the optical-mechanical cover unit 2 and downward, respectively. The above mentioned bare engine cover unit 2 may be a unit for shielding the bare engine. Here, the optical-mechanical cover unit 2 may include two optical-mechanical covers, and may be disposed corresponding to the first display screen and the second display screen, respectively. For example, the first imaging lens 41 may be formed with a reciprocating spiral groove corresponding to a reciprocating screw included in the first reciprocating member. The first reciprocating member may include a reciprocating screw engaged with the reciprocating spiral groove to be connected to the first imaging lens 41. The second imaging lens 42 may be formed with a reciprocating spiral groove corresponding to a reciprocating screw included in the second reciprocating member. The second reciprocating member may include a reciprocating screw rod engaged with the reciprocating spiral groove to be connected to the second imaging lens 42. For another example, the first display 31 may be provided with a reciprocating spiral groove corresponding to a reciprocating screw rod included in the first reciprocating member. The first reciprocating member may include a reciprocating screw rod engaged with the reciprocating spiral groove to be coupled to the first display screen 31. The second display screen 32 may be formed with a reciprocating spiral groove corresponding to a reciprocating screw included in the second reciprocating member. The second reciprocating member may include a reciprocating screw rod engaged with the reciprocating spiral groove to be coupled to the second display screen 32.

In some embodiments, when the rotation direction of the connecting rod 12 is a first rotation direction, the first one-way transmission element 13 can be driven to rotate in the load rotation direction, and the first reciprocating element can drive the first display screen 31 and/or the first imaging lens 41 to reciprocate. When the rotation direction of the connecting rod 12 is the second rotation direction, the second one-way transmission member 15 can be driven to rotate in the load rotation direction, and the second reciprocating member can drive the second display screen 32 and/or the second imaging lens 42 to reciprocate. The first rotational direction of the connecting rod 12 is opposite to the second rotational direction. The load rotation direction can be the direction in which the two sides of the one-way transmission piece can not rotate relatively but can transmit torque.

For example, the first imaging lens 41 may be formed with a reciprocating spiral groove corresponding to the reciprocating screw included in the first reciprocating member. The reciprocating screw rod included in the first reciprocating member is engaged with the reciprocating spiral groove for transmission, so that the first reciprocating member can drive the first imaging lens 41 to reciprocate. The second imaging lens 42 may be formed with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the second reciprocating member. The reciprocating screw rod included in the second reciprocating member is engaged with the reciprocating spiral groove for transmission, so that the second reciprocating member can drive the second imaging lens 42 to reciprocate. For another example, the first display screen 31 may be provided with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the first reciprocating member. The reciprocating screw rod included in the first reciprocating member is engaged with the reciprocating spiral groove for transmission, so that the first reciprocating member can drive the first display screen 31 to reciprocate. The second display screen 32 may be formed with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the second reciprocating member. The reciprocating screw rod included in the second reciprocating member is engaged with the reciprocating spiral groove for transmission, so that the second reciprocating member can drive the second display screen 32 to reciprocate.

The reciprocating screw can also be a nut sleeve, a nut seat and the like which can be matched with the reciprocating screw rod.

The above embodiments of the present disclosure have the following beneficial effects: through the diopter adjusting member capable of adjusting diopter of some embodiments of the present disclosure, binocular diopter debugging can be independently completed through one adjusting member respectively, a user can conveniently wear the applied augmented reality device, and the diopter adjusting operation is simplified. Specifically, the reasons for inconvenience of wearing and troublesome operations for adjusting diopter are: the weight and occupied space of the two driving members are large, so that the weight and volume of the applied augmented reality device are large, the wearing of a user is inconvenient, the user needs to adjust the two driving members respectively to complete the dual-purpose diopter debugging, and the diopter adjusting operation is complex. Based on this, the diopter adjustment member capable of adjusting diopter of some embodiments of the present disclosure includes an adjustment unit, an optical machine upper cover unit, a display screen unit, and an imaging unit. The adjusting unit comprises an adjusting component, a connecting rod, a first one-way transmission piece, a first reciprocating component, a second one-way transmission piece and a second reciprocating component. The adjusting component can drive the connecting rod to rotate. One side of the first one-way transmission piece and one side of the second one-way transmission piece are sleeved at two ends of the connecting rod, and the other side of the first one-way transmission piece is in transmission connection with the first reciprocating member. The other side of the second one-way transmission piece is in transmission connection with the second reciprocating component. The display screen unit comprises a first display screen and a second display screen. The imaging unit includes a first imaging lens and a second imaging lens. The first reciprocating member and the second reciprocating member are connected to the display screen unit and/or the imaging unit, respectively, from above the cover unit of the optical machine downward. When the rotation direction of the connecting rod is a first rotation direction, the connecting rod can drive the first one-way transmission piece to rotate towards the load rotation direction, and at the moment, the first reciprocating component can drive the first display screen and/or the first imaging lens to reciprocate;

when the rotation direction of the connecting rod is a second rotation direction, the connecting rod can drive the second one-way transmission member to rotate towards the load rotation direction, and at the moment, the second reciprocating member can drive the second display screen and/or the second imaging lens to reciprocate;

the first rotational direction is opposite to the second rotational direction. Also because the adjustment unit of the diopter adjustment member comprises one adjustment member and the adjustment member can drive the connecting rod to rotate, so that the connecting rod can transmit power to the other members. And because the two transmission parts (namely the first one-way transmission part and the second one-way transmission part) connected with the connecting rod are one-way, and the two one-way transmission parts can be respectively driven to rotate towards the load rotating direction in opposite rotating directions of the connecting rod, when the adjusting component drives the connecting rod to rotate towards one direction, the connecting rod only drives the corresponding reciprocating component to work, and the other reciprocating component does not work. And the display screen and/or the imaging lens are driven by the reciprocating component and can move in a reciprocating manner, so that when the adjusting component drives the connecting rod to rotate towards one direction, the closed-loop adjustment of the corresponding monocular diopter size can be realized. Therefore, binocular diopter debugging can be completed through one adjusting component, the weight and the volume of the applied augmented reality equipment are reduced, and the user can conveniently wear the applied augmented reality equipment. The closed-loop adjustment of the binocular diopter size can be independently completed through the rotation of one adjusting component in different directions, when one monocular diopter is adjusted, the other monocular diopter is not interfered with each other, and the structural design, space and operation for adjusting the binocular diopter are simplified.

Fig. 2 is an exploded structural view of other embodiments of a diopter adjustment member capable of adjusting diopter according to the present disclosure. Fig. 2 includes an adjusting member 11, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first lateral bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second lateral bevel gear 163, a bare engine cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, a second imaging lens 42, and a positioning guide pin unit 5.

In some embodiments, the first display screen 31 and the first imaging lens 41 may be fixedly connected. The second display screen 32 and the second imaging lens 42 may be fixedly coupled. For example, the first display screen 31 and the first imaging lens 41 may be fixedly coupled by means of adhesion. The second display screen 32 and the second imaging lens 42 may be fixedly attached by means of bonding.

In some embodiments, when the connecting rod 12 rotates in a direction to drive the first one-way transmission element 13 to rotate in a load rotating direction, the first reciprocating element can drive the first display screen 31 and the first imaging lens 41 to reciprocate together.

When the rotation direction of the connecting rod 12 can drive the second one-way transmission member 15 to rotate in the load rotation direction, the second reciprocating member can drive the second display screen 32 and the second imaging lens 42 to reciprocate together.

In some embodiments, the diopter adjustment member may further include a positioning guide pin unit 5. The positioning guide pin unit 5 may include at least one positioning guide pin. The positioning guide pin may be a member for positioning and guiding the moving direction.

Alternatively, the above-described positioning guide pin unit 5 may include a first positioning guide pin group and a second positioning guide pin group. The first positioning guide pin set may include at least two first positioning guide pins. The second positioning guide pin group may include at least two second positioning guide pins. The first positioning guide pin group and the second positioning guide pin group can be respectively the positioning guide pin groups on two sides of the diopter adjusting member and can respectively correspond to two eyes.

In some embodiments, the optical machinery cover unit 2 may be provided with fixing holes corresponding to the upper ends of the positioning guide pin units 5. The upper ends of the positioning guide pin units 5 are fixed in the respective fixing holes.

In some embodiments, the image forming unit is provided with respective positioning holes corresponding to the lower ends of the positioning guide pin units 5, and the lower ends of the positioning guide pin units 5 are movably inserted into the respective positioning holes. For example, the positioning holes may be holes formed in the display screen unit and/or the imaging unit. For example, in fig. 2, positioning holes are opened in the first imaging lens 41 and the second imaging lens 42.

As can be seen from fig. 2, the diopter-adjustable diopter adjustment member in the corresponding embodiment of fig. 2 embodies the expansion of the positioning guide pin, compared with the description of the corresponding embodiment of fig. 1. Therefore, the adjusting unit can more firmly drive the display screen unit and the imaging unit to move back and forth together under the guidance of the positioning guide pin. In addition, the distance between the display screen unit and the imaging unit is not changed when the diopter is adjusted because the display screen unit and the imaging unit are fixedly connected. Thereby ensuring that the field angle remains substantially unchanged during diopter adjustment. From this, can avoid wearing the user because binocular power is inconsistent, adjust the diopter in-process and lead to about the picture size inconsistent, be difficult to clearly to close the image and the dizzy sense appears, promoted the comfort of wearing of the augmented reality equipment who uses, ensured different eyesight users' picture impression experience uniformity.

Figure 3 is an exploded block diagram of still further embodiments of diopter adjustment members according to the present disclosure.

Figure 4 is a combined block diagram of further embodiments of diopter adjustment members according to the present disclosure.

Fig. 3 and 4 include an adjustment member 11, a connection rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first lateral bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second lateral bevel gear 163, the optical bench cover unit 2, the first display screen 31, the second display screen 32, the first imaging lens 41, the second imaging lens 42, the first nut bracket 43, the second nut bracket 44, a first positioning guide pin group 51, and a second positioning guide pin group 52.

In some embodiments, the imaging unit may further include a first nut bracket 43 and a second nut bracket 44. The first nut bracket 43 and the second nut bracket 44 may be nut brackets at both sides of the diopter adjusting member, respectively, and may correspond to two eyes, respectively. The nut bracket may be a bracket for carrying.

In some embodiments, the first display screen 31 may be disposed above the first nut bracket 43. The second display screen 32 may be disposed above the second nut bracket 44. The first imaging lens 41 may be disposed below the first nut bracket 43. The second imaging lens 42 is disposed below the second nut bracket 44. The first display panel 31 and the first imaging lens 41 may be fixed to the first nut bracket 43 by bonding. The second display screen 32 and the second imaging lens 42 may be fixed to the second nut holder 44 by means of adhesion.

Alternatively, the first display screen 31 may be fixed above the first nut bracket 43 by a snap-fit method. The first imaging lens 41 may be fixed below the first nut holder 43 by engaging with it. The second display 32 may be fixed above the second nut bracket 44 by a snap-fit. The second imaging lens 42 may be fixed below the second nut holder 44 by engaging with it. Therefore, the display screen and the imaging lens can be conveniently detached from the nut bracket.

In some embodiments, the first reciprocating member and the second reciprocating member are each rotatably connected to the opto-mechanical cover unit 2 described above. The first nut holder 43 is provided with a spiral groove corresponding to the first reciprocating member. The second nut holder 44 is provided with a spiral groove corresponding to the second reciprocating member. Here, the spiral groove is a reciprocating spiral groove.

In some embodiments, in the working state of the first reciprocating member, the first reciprocating member is engaged with the spiral groove of the first nut bracket 43 for driving, so as to drive the first display screen 31 and the first imaging lens 41 to reciprocate together with the first nut bracket 43. In the operating state of the second reciprocating member, the second reciprocating member is engaged with the spiral groove of the second nut holder 44 for transmission, so as to drive the second display screen 32 and the second imaging lens 42 to reciprocate together with the second nut holder 44. Here, the spiral groove may be a screw hole with an internal thread matching the reciprocating screw rod formed on the nut holder, or may be a nut sleeve mounted on the nut holder to match the reciprocating screw rod for transmission.

In some embodiments, the pilot pin unit may include a first pilot pin group 51 and a second pilot pin group 52. The first and second positioning

guide pin groups

51 and 52 may be a positioning guide pin group on both sides of the diopter adjustment member, and may correspond to two eyes, respectively. The first nut holder 43 may be provided with positioning holes corresponding to the lower ends of the first positioning guide pin group 51. The second nut holder 44 may be provided with positioning holes corresponding to the lower ends of the second positioning guide pin group 52. For example, the first set of positioning guide pins 51 may include 4 positioning guide pins. The first nut bracket 43 is provided with 4 positioning holes. The second set of alignment guide pins 52 may include 4 alignment guide pins. The second nut bracket 44 is provided with 4 positioning holes. Thereby, the adjusting unit can be made to more firmly drive the display screen unit and the imaging unit to move.

In some embodiments, the fixing holes may be respectively disposed on a side of the optical mechanical cover unit 2 close to the first reciprocating member and a side close to the second reciprocating member. The positioning holes may be respectively provided on a side of the image forming unit adjacent to the first reciprocating member and a side of the image forming unit adjacent to the second reciprocating member. Thereby, the adjusting unit can be further made to more firmly bring the display screen unit and the imaging unit into movement.

As can be seen from fig. 3 and 4, the diopter-adjustable diopter adjustment member of the corresponding some embodiments of fig. 3 embodies the expansion of the nut bracket, compared to the description of the corresponding some embodiments of fig. 1. Therefore, the display screen and the imaging lens can be fixed on the nut support, and the display screen and the imaging lens are fixed more stably. The positioning hole of the positioning guide pin can be arranged on the nut support, so that direct hole opening on a display screen or an imaging lens can be avoided. In addition, adopt nut leg joint to bear display screen and imaging lens, can reduce the structural requirement and the production degree of difficulty of display screen and imaging lens, can also promote the detachability and the maintainability of whole module.

Figure 5 is an exploded block diagram of some embodiments of diopter adjustment members including an electric gear module according to the present disclosure. Fig. 5 includes a stepping motor 111, a transmission gear 112, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, a bare engine cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, and a second imaging lens 42.

In some embodiments, the adjustment member may comprise an electric gear train module, which may comprise a stepper motor 111 and a drive gear 112.

The connecting rod 12 and the output shaft of the stepping motor 111 are respectively provided with a transmission gear 112, and are engaged with each other. In an operating state, the stepping motor 111 can drive the connecting rod 112 to rotate through a transmission gear.

As can be seen from fig. 5, the diopter adjustment member of the adjustable diopter of the embodiment corresponding to fig. 5 represents an extension of the electric gear module, compared with the description of the embodiment corresponding to fig. 1. Therefore, when the connecting rod is automatically driven to rotate towards different directions through the stepping motor and the transmission gear, closed-loop adjustment of the corresponding monocular diopter size is realized, and diopter adjustment operation is simplified.

Figure 6 is an exploded block diagram of further embodiments of diopter adjustment members including an electric gear module according to the present disclosure. Fig. 6 includes a stepping motor 111, a transmission gear 112, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, a bare engine cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, a second imaging lens 42, and a positioning guide pin unit 5.

As can be seen from fig. 6, the diopter adjustment member of the adjustable diopter of the embodiment corresponding to fig. 6 represents an extension of the electric gear module, compared with the description of the embodiment corresponding to fig. 2. Therefore, when the connecting rod is automatically driven to rotate towards one direction through the stepping motor and the transmission gear, closed-loop adjustment of the corresponding monocular diopter size is realized, and the diopter adjustment operation is simplified.

Figure 7 is an exploded view of still further embodiments of diopter adjustment members including motorized gear modules according to the present disclosure. Fig. 7 includes a stepping motor 111, a transmission gear 112, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first lateral bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second lateral bevel gear 163, the bare engine cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, a second imaging lens 42, a first nut bracket 43, a second nut bracket 44, a first positioning guide pin group 51, and a second positioning guide pin group 52.

Figure 8 is a combined block diagram of further embodiments of diopter adjustment members including an electric gear module according to the present disclosure. Fig. 8 includes a stepping motor 111, a transmission gear 112, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first lateral bevel gear 143, a second one-way transmission 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second lateral bevel gear 163, the bare engine cover unit 2, a first display screen 31, a second display screen 32, a first imaging lens 41, a second imaging lens 42, a first nut bracket 43, a second nut bracket 44, a first positioning guide pin group 51, and a second positioning guide pin group 52. It should be noted that fig. 8 may be a schematic view of a combined structure of the diopter adjustment member shown in fig. 7, which is horizontally rotated by 180 degrees after the respective components are combined.

As can be seen in fig. 7 and 8, the diopter-adjustable diopter adjustment member of the embodiments corresponding to fig. 7 and 8 represents an extension of the motorized gear transmission module, compared to the description of the embodiments corresponding to fig. 3 and 4. Therefore, when the connecting rod is automatically driven to rotate towards one direction through the stepping motor and the transmission gear, closed-loop adjustment of the corresponding monocular diopter size is realized, and the diopter adjustment operation is simplified.

Figure 9 is a schematic structural view of some embodiments of an adjustable power optical module according to the present disclosure. Fig. 9 includes a diopter adjustment member 100 that can adjust diopter, an optomechanical body support 200, a planar lens unit, and a curved lens unit (the planar lens unit and the curved lens unit are not shown).

In some embodiments, the diopter adjustable optical module may include the diopter adjusting member 100, the optomechanical body support 200, the planar lens unit, and the curved lens unit described in any one of the embodiments corresponding to fig. 1 to 8.

The opto-mechanical body support 200 described above can be used to connect members including, but not limited to, the diopter adjustment member 100, the planar lens unit, and the curved lens unit. The planar lens unit described above may be used to modulate the optical path. The planar lens unit may be provided with a planar lens and a film system having a light path modulation function. The planar lens may be a plastic or glass planar lens. The film system may be attached to the planar lens or may be plated on the planar lens. The film system can be used for carrying out light polarization modulation. The film system may include, but is not limited to, the following films: polarizing film, quarter wave plate, PBS (polarizing Beam Splitter) film. The curved lens unit may be used for aberration correction and optical path reflection. The curved lens unit may include a curved lens made of glass or plastic. The surface type of the curved lens may include, but is not limited to, the following types: spherical lens, aspheric lens, free-form surface lens, fresnel lens, flat lens. Preferably, the surface of the curved lens may be a spherical lens, and a transflective film is disposed inside the curved lens. The transflective film may be disposed inside the curved lens in a film-coating manner or a film-sticking manner. The planar lens unit may include two planar lenses. The curved lens unit may include two curved lenses.

In some embodiments, the diopter adjustment member 100 may be disposed on the optomechanical body bracket 200. For example, the diopter adjusting member 100 may be fixed to the carriage 200 by screws. Specifically, the screws may be connected to the screw holes on the carriage body bracket 200 through the hole positions on the carriage cover unit. The planar lens unit and the curved lens unit may be fixed to the carriage 200, respectively. For example, the planar lens unit and the curved lens unit may be fixed to the carriage 200 by bonding. In this embodiment, the planar lens unit and the display screen unit are disposed on a side close to the eyes of the wearer at an included angle of 45 °. The curved lens unit is disposed on a side away from the wearer's eye and is curved toward the side away from the wearer's eye. The diopter adjusting member 100 may include an imaging lens having a power absolute value larger than that of the curved lens unit.

That is, the imaging lens is the most important device with optical power in the whole device and is the most core device for distributing the optical power and the refraction angle of the optical path in the whole system.

It should be noted that the imaging lens can perform a diverging function on the light entering the imaging portion of the eye, and the focal power of the imaging lens is positive. The curved lens unit comprises a curved lens which can converge light entering an eye imaging part, and the focal power of the curved lens unit is negative focal power.

In the working state of the diopter adjusting member 100, the diopter adjusting member 100 can drive the display screen unit and/or the imaging unit to move so as to change the distance between the display screen unit and/or the imaging unit and the planar lens unit. It can be understood that, when the distance between the display screen unit and/or the imaging unit and the planar lens unit is increased, the diopter of the diopter adjustable optical module can be reduced. On the contrary, when the distance between the display screen unit and/or the imaging unit and the planar lens unit is reduced, the diopter of the diopter-adjustable optical module can be increased.

Alternatively, the diopter adjusting member 100 may be adhered above the optomechanical body bracket 200. Therefore, the whole weight of the diopter-adjustable optical module can be reduced.

The above embodiments of the present disclosure have the following advantages: through the diopter-adjustable optical module of some embodiments of this disclosure, can independently accomplish binocular diopter debugging respectively through an adjusting member, convenience of customers wears the augmented reality equipment who uses, and simplified the operation of adjusting diopter. Specifically, the reasons for inconvenience of wearing and troublesome operations for adjusting diopter are: the weight and occupied space of the two driving members are large, so that the weight and the volume of the applied augmented reality device are large, the wearing of a user is inconvenient, the diopter debugging can be completed only by the user needing to adjust the two driving members respectively, and the diopter adjusting operation is complicated. Based on this, the diopter adjustable optical module according to some embodiments of the present disclosure includes the diopter adjustable member, the optical engine body bracket, the planar lens unit and the curved lens unit, which are described in any one of the embodiments corresponding to fig. 1 to 8, and the diopter adjustable member is disposed on the optical engine body bracket. The plane lens unit and the curved lens unit are respectively fixed on the optical machine body bracket. The diopter adjusting member includes an imaging lens having a power absolute value larger than that of the curved lens unit. And the plane lens unit is fixed on the optical machine body bracket, so that when the diopter adjusting member is adjusted, the distance between the display screen unit and/or the imaging unit of the diopter adjusting member and the plane lens unit can be changed, and the diopter adjustment can be realized. And the diopter adjusting member capable of adjusting diopter can realize diopter debugging through one adjusting member, so that the weight and the volume of the applied augmented reality equipment are reduced, and the user can conveniently wear the applied augmented reality equipment. The diopter adjusting component capable of adjusting diopter can also independently complete the closed-loop adjustment of the corresponding monocular diopter sizes respectively through the rotation of one adjusting component in different directions, and the diopter adjusting operation is simplified.

Fig. 10 is a schematic structural diagram of some embodiments of a head mounted display device according to the present disclosure. Figure 10 includes an adjustable diopter optical module 300.

In some embodiments, the head-mounted display device may include the diopter-adjustable optical module 300 described in the corresponding embodiment of fig. 9. Here, the head-mounted display device may be AR (Augmented Reality) glasses.

The above embodiments of the present disclosure have the following advantages: through the head-mounted display equipment of some embodiments of this disclosure, can realize accomplishing the diopter debugging through an adjusting member, reduce head-mounted display equipment's weight and volume to can make things convenient for the user to wear. And the closed-loop adjustment of the corresponding monocular diopter size can be respectively and independently finished through the rotation of one adjusting member in different directions, so that the diopter adjusting operation is simplified.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure in the embodiments of the present disclosure is not limited to the particular combination of the above-described features, but also encompasses other embodiments in which any combination of the above-described features or their equivalents is possible without departing from the scope of the present disclosure. For example, the above features and (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure are mutually replaced to form the technical solution.

Claims

1. A diopter adjusting member capable of adjusting diopter, wherein the diopter adjusting member comprises an adjusting unit, an optical machine upper cover unit, a display screen unit and an imaging unit,

the adjusting unit comprises an adjusting component, a connecting rod, a first one-way transmission piece, a first reciprocating component, a second one-way transmission piece and a second reciprocating component;

the adjusting component can drive the connecting rod to rotate;

the first reciprocating component is in transmission with the connecting rod through the first one-way transmission piece, and the second reciprocating component is in transmission with the connecting rod through the second one-way transmission piece;

the display screen unit comprises a first display screen and a second display screen, and the imaging unit comprises a first imaging lens and a second imaging lens;

the first reciprocating member and the second reciprocating member are respectively connected to the display screen unit and/or the imaging unit from the upside of the optical machine upper cover unit to the downside;

when the rotating direction of the connecting rod is a first rotating direction, the first one-way transmission piece can be driven to rotate towards the load rotating direction, and at the moment, the first reciprocating component can drive the first display screen and/or the first imaging lens to reciprocate;

when the rotating direction of the connecting rod is a second rotating direction, the second one-way transmission piece can be driven to rotate towards the load rotating direction, and at the moment, the second reciprocating component can drive the second display screen and/or the second imaging lens to reciprocate;

the first and second rotational directions are opposite.

2. The diopter-adjustable diopter adjustment member of claim 1, wherein the first display screen and the first imaging lens are fixedly connected, and the second display screen and the second imaging lens are fixedly connected;

when the rotating direction of the connecting rod is the load rotating direction of the first one-way transmission piece, the first reciprocating component can drive the first display screen and the first imaging lens to reciprocate together;

when the rotating direction of the connecting rod is the load rotating direction of the second one-way transmission piece, the second reciprocating component can drive the second display screen and the second imaging lens to reciprocate together.

3. The diopter-adjustable diopter adjustment member of claim 2, wherein the diopter adjustment member further comprises a positioning guide pin unit;

the optical machine upper cover unit is provided with fixing holes corresponding to the upper ends of the positioning guide pin units, and the upper ends of the positioning guide pin units are fixed in the fixing holes;

the imaging unit is provided with positioning holes corresponding to the lower ends of the positioning guide pin units, and the lower ends of the positioning guide pin units can movably penetrate through the positioning holes.

4. The diopter adjustment member of claim 3, wherein the imaging unit further comprises a first nut bracket and a second nut bracket;

the first display screen is arranged above the first nut bracket, the second display screen is arranged above the second nut bracket, the first imaging lens is arranged below the first nut bracket, and the second imaging lens is arranged below the second nut bracket;

the first reciprocating member and the second reciprocating member are respectively in rotary connection with the optical machine upper cover unit, a spiral groove corresponding to the first reciprocating member is formed in the first nut support, and a spiral groove corresponding to the second reciprocating member is formed in the second nut support;

under the working state of the first reciprocating member, the first reciprocating member is in meshing transmission with the spiral groove on the first nut support, and can drive the first display screen and the first imaging lens to reciprocate together with the first nut support;

under the working state of the second reciprocating member, the second reciprocating member is in meshing transmission with the spiral groove on the second nut support, and can drive the second display screen and the second imaging lens to reciprocate together with the second nut support.

5. A diopter adjustable diopter adjustment member according to one of claims 1 to 4, wherein the adjustment member comprises an adjustment knob which is fitted over the connecting rod.

6. A diopter adjustment member according to any of claims 1 to 4, wherein the adjustment member comprises an electric gear transmission module comprising a stepping motor and a transmission gear;

the connecting rod and the output shaft of the stepping motor are respectively provided with a transmission gear which are meshed with each other, and the stepping motor can drive the connecting rod to rotate through the transmission gear in a working state.

7. A diopter adjustment member according to any one of claims 1 to 4, wherein the first reciprocating member comprises a first bevel gear transmission set and a first reciprocating screw rod, and the first reciprocating screw rod is provided with two threads which are arranged crosswise and have opposite turning directions;

the connecting rod is in transmission connection with the input end of the first bevel gear transmission set through the first one-way transmission piece, and the first reciprocating screw rod is connected with the output end of the first bevel gear transmission set;

or the connecting rod is connected with the input end of the first bevel gear transmission set, and the output end of the first bevel gear transmission set is connected with the first reciprocating screw rod through the first one-way transmission piece;

the second reciprocating component comprises a second bevel gear transmission set and a second reciprocating screw rod, and two threads which are distributed in a crossed manner and have opposite rotation directions are arranged on the second reciprocating screw rod;

the connecting rod is in transmission connection with the input end of the second bevel gear transmission set through the second one-way transmission piece, and the second reciprocating screw rod is connected with the output end of the second bevel gear transmission set;

or the connecting rod is connected with the input end of the second bevel gear transmission set, and the output end of the second bevel gear transmission set is connected with the second reciprocating screw rod through a second one-way transmission piece.

8. The diopter adjustment member of claim 7, wherein a thread corresponding to diopter adjustment from small to large arranged on the first reciprocating screw is a forward thread, a thread corresponding to diopter adjustment from large to small arranged on the first reciprocating screw is a reverse thread, and a thread pitch of the reverse thread is larger than a thread pitch of the forward thread;

the thread arranged on the second reciprocating screw rod and corresponding to diopter adjustment from small to large is a forward thread, the thread arranged on the second reciprocating screw rod and corresponding to diopter adjustment from large to small is a reverse thread, and the thread pitch of the reverse thread on the second reciprocating screw rod is larger than that of the forward thread.

9. The diopter-adjustable diopter adjustment member according to claim 4, wherein the positioning guide pin unit includes a first positioning guide pin group and a second positioning guide pin group;

each positioning hole corresponding to the lower end of the first positioning guide pin group is formed in the first nut bracket;

and each positioning hole corresponding to the lower end of the second positioning guide pin group is arranged on the second nut bracket.

10. A diopter adjustment member according to claim 3, wherein the respective fixing holes are provided on a side of the optomechanical cover unit adjacent to the first reciprocating member and a side adjacent to the second reciprocating member, and the respective positioning holes are provided on a side of the imaging unit adjacent to the first reciprocating member and a side adjacent to the second reciprocating member.

11. The diopter adjustment member of claim 3, wherein the positioning guide pin unit includes a first positioning guide pin group including at least two first positioning guide pins and a second positioning guide pin group including at least two second positioning guide pins.

12. A diopter adjustment member according to claim 4, wherein the first display screen is fixed above the first nut bracket by means of a snap fit, the first imaging lens is fixed below the first nut bracket by means of a snap fit, the second display screen is fixed above the second nut bracket by means of a snap fit, and the second imaging lens is fixed below the second nut bracket by means of a snap fit.

13. An adjustable diopter optical module, wherein said adjustable diopter optical module comprises an adjustable diopter adjusting member according to one of claims 1 to 12, an optical machine body support, a planar lens unit, and a curved lens unit,

the diopter adjusting component is arranged on the optical machine body bracket;

the plane lens unit and the curved lens unit are respectively fixed on the optical machine body bracket;

the diopter adjustment member includes an imaging lens having a power absolute value larger than that of the curved lens unit.

14. The diopter-adjustable optical module of claim 13, wherein the diopter adjustment unit is bonded above the opto-mechanical body support.

15. A head mounted display device, wherein the head mounted display device comprises the adjustable diopter optical module of any one of claims 13-14.