CN115327783B

CN115327783B - Diopter adjusting member capable of adjusting diopter, optical module and display device

Info

Publication number: CN115327783B
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: 2023-06-30
Anticipated expiration: 2042-10-13
Also published as: CN115327783A

Abstract

Embodiments of the present disclosure disclose a diopter adjustment member, an optical module, and a display device that can adjust diopter. The diopter adjusting component 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 downwards from the upper part of the upper cover unit of the optical machine; when the rotation direction of the connecting rod is the first rotation direction, the first reciprocating member drives the first display screen and/or the first imaging lens to reciprocate; when the rotation direction of the connecting rod is the second rotation direction, the second reciprocating member drives the second display screen and/or the second imaging lens to reciprocate. The diopter adjustment of the diopter-adjustable optical module can be completed through one adjusting component, a user can wear the applied augmented reality equipment conveniently, and diopter adjustment operation is simplified.

Description

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

Technical Field

Embodiments of the present disclosure relate to the field of optical technology, and in particular, to a diopter adjustment member, an optical module, and a display device that can adjust diopter.

Background

With the development of artificial intelligence, algorithms and other technologies, augmented reality devices are widely used. In order to meet the demands of vision-impaired users, the augmented reality device needs to have diopter adjustment function. The diopter adjustment means of the existing augmented reality device are generally provided with drive means for adjusting diopter for the user separately for the binocular, respectively.

However, the inventors found that the diopter adjustment member described above often has the following technical problems: the weight of the two driving members and the occupied space are large, so that the weight and the volume of the applied augmented reality equipment are large, the wearing of a user is inconvenient, and the user can adjust diopter only by respectively adjusting the two driving members corresponding to the binocular, so that the diopter adjustment 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 those of ordinary skill in the art in this country.

Disclosure of Invention

The disclosure is in part intended to introduce concepts in a simplified form that are further described below in the detailed description. The disclosure 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 that can adjust diopters to address one or more of the technical issues mentioned in the background section above.

In a first aspect, some embodiments of the present disclosure provide a diopter adjustable diopter adjustment member, wherein the diopter adjustable diopter adjustment member includes an adjustment unit, an optical machine upper cover unit, a display screen unit, and an imaging unit, and the adjustment unit includes an adjustment member, a connecting 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 driven by the first unidirectional driving part and the connecting rod, and the second reciprocating member is driven by the second unidirectional driving mechanism and the connecting rod; 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 from the upper part of the upper cover unit of the optical machine downwards to the display screen unit and/or the imaging unit; when the rotation direction of the connecting rod is a first rotation direction, the first unidirectional transmission piece can be driven to rotate in the load rotation direction, and at the moment, the first reciprocating member can drive the first display screen and/or the first imaging lens to reciprocate; when the rotation direction of the connecting rod is the second rotation direction, the second unidirectional transmission piece can be driven 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 and second rotational directions are opposite.

Optionally, the first display screen is fixedly connected with the first imaging lens, and the second display screen is fixedly connected with the second imaging lens; when the rotation direction of the connecting rod is the load rotation direction of the first unidirectional transmission piece, the first reciprocating member can drive the first display screen and the first imaging lens to reciprocate together; when the rotation direction of the connecting rod is the load rotation direction of the second unidirectional transmission piece, the second reciprocating member can drive the second display screen and the second imaging lens to reciprocate together.

Optionally, the diopter adjustment member further includes a positioning guide pin unit; the upper cover unit of the optical machine 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; and each positioning hole corresponding to the lower end of the positioning guide pin unit is arranged on the imaging unit, and the lower end of the positioning guide pin unit can movably penetrate through each positioning hole.

Optionally, the imaging unit further includes 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 connected with the upper cover unit of the optical machine 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 and driven with the spiral groove on the first nut bracket, and can drive the first display screen and the first imaging lens to reciprocate together with the first nut bracket; and in the working state of the second reciprocating member, the second reciprocating member is meshed with the spiral groove on the second nut bracket for transmission, and can drive the second display screen and the second imaging lens to reciprocate together with the second nut bracket.

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

Optionally, the first reciprocating member comprises a first bevel gear transmission group and a first reciprocating screw rod, and the first reciprocating screw rod is provided with two threads which are distributed in a crossing way and have opposite rotation directions; the connecting rod is in transmission connection with the input end of the first bevel gear transmission group through the first unidirectional transmission piece, and the first reciprocating screw rod is connected with the output end of the first bevel gear transmission group; or the connecting rod is connected with the input end of the first bevel gear transmission group, and the output end of the first bevel gear transmission group is connected with the first reciprocating screw rod through the first unidirectional transmission piece; the second reciprocating member comprises a second bevel gear transmission group and a second reciprocating screw rod, and two threads which are distributed in a crossed mode and are opposite in rotation direction 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 group through the second unidirectional transmission piece, and the second reciprocating screw rod is connected with the output end of the second bevel gear transmission group; or the connecting rod is connected with the input end of the second bevel gear transmission group, and the output end of the second bevel gear transmission group is connected with the second reciprocating screw rod through a second unidirectional transmission piece.

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

Optionally, 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 formed in the second nut bracket.

Optionally, the fixing holes are respectively disposed on a side of the optical bench cover unit, which is close to the first reciprocating member, and a side of the optical bench cover unit, which is close to the second reciprocating member, and the positioning holes are respectively disposed on a side of the imaging unit, which is close to the first reciprocating member, and a side of the imaging unit, which is close to the second reciprocating member.

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

Optionally, the first display screen is fixed above the first nut bracket by a clamping manner, the first imaging lens is fixed below the first nut bracket by a clamping manner, the second display screen is fixed above the second nut bracket by a clamping manner, and the second imaging lens is fixed below the second nut bracket by a clamping manner.

In a second aspect, some embodiments of the present disclosure provide an adjustable diopter optical module, wherein the adjustable diopter optical module includes a diopter adjustment member as described in any implementation of the first aspect, a carriage of a machine body, a planar lens unit, and a curved lens unit, the diopter adjustment member being disposed on the carriage of the machine body; 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 support.

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

The above embodiments of the present disclosure have the following advantageous effects: with the diopter adjusting member of some embodiments of the present disclosure, separate adjustment of binocular diopters can be achieved through one adjusting member, which is convenient for a user to wear an applied augmented reality device, and simplifies diopter adjustment operations.

Specifically, the reason for the inconvenience of wearing by the user and the cumbersome operation of adjusting diopter is: the weight of the two driving members and the occupied space are large, so that the weight and the volume of the applied augmented reality equipment are large, the wearing of a user is inconvenient, and the user can adjust diopter only by respectively adjusting the two driving members corresponding to the binocular, so that the diopter adjustment operation is complicated. Based on this, the diopter adjustable diopter adjustment member 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 member, a connecting rod, a first unidirectional transmission piece, a first reciprocating member, a second unidirectional transmission piece and a second reciprocating member. The adjusting member can drive the connecting rod to rotate. The first reciprocating member is driven by the first unidirectional driving member and the connecting rod, and the second reciprocating member is driven by the second unidirectional driving mechanism and the connecting rod. 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 respectively connected from the upper part of the upper cover unit of the optical machine to the display screen unit and/or the imaging unit. When the rotation direction of the connecting rod is the first rotation direction, the first unidirectional transmission piece can be driven to rotate towards the load rotation direction, and at the moment, the first reciprocating member can drive the first display screen and/or the first imaging lens to reciprocate. When the rotation direction of the connecting rod is the second rotation direction, the second unidirectional transmission piece can be driven 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.

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

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

Drawings

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

FIG. 1 is an exploded block diagram of some embodiments of a diopter adjustment member adjustable diopter according to the present disclosure;

FIG. 2 is an exploded block diagram of other embodiments of diopter adjustment members adjustable diopter according to the present disclosure;

FIG. 3 is an exploded block diagram of still other embodiments of diopter adjustment members adjustable diopter according to the present disclosure;

FIG. 4 is a combined block diagram of further embodiments of diopter adjustable diopter adjustment members according to this disclosure;

FIG. 5 is an exploded block diagram of some embodiments of a diopter adjustment member including an motorized gear transmission module according to the present disclosure;

FIG. 6 is an exploded block diagram of other embodiments of diopter adjustment members including motorized gear transmission modules according to the present disclosure;

FIG. 7 is an exploded block diagram of still other embodiments of diopter adjustment members including an motorized gear transmission module according to the present disclosure;

FIG. 8 is a combined block diagram of still other embodiments of diopter adjustable diopter member including an motorized gear transmission module according to this disclosure;

FIG. 9 is a schematic diagram of the structure of some embodiments of an adjustable diopter optical module according to the present disclosure;

fig. 10 is a schematic structural view 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 should be understood that the present 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 so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.

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

It should be noted that the terms "first," "second," and the like in this disclosure are merely used to distinguish between different devices, modules, or units and are not used to define an order or interdependence of functions performed by the devices, modules, or units.

It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those of ordinary skill in the art will appreciate that "one or more" is intended to be understood as "one or more" unless the context clearly indicates otherwise.

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

Fig. 1 is an exploded block diagram of some embodiments of a diopter adjustment member adjustable 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 rod 141, a first bevel gear transmission group (composed of a first vertical bevel gear 142 and a first horizontal bevel gear 143), a second one-way transmission 15, a second reciprocating screw rod 161, a second bevel gear transmission group (composed of a second vertical bevel gear 162 and a second horizontal bevel gear 163), an opto-mechanical upper 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 adjusting means for adjusting diopter may include an adjusting unit, an optical machine upper cover unit 2, a display screen unit, and an imaging unit. The above-mentioned adjusting unit may be a combined 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 adjustment member 11 may be a member for driving. For example, the adjusting member 11 may be an adjusting knob. The connecting rod 12 may be a rod assembly for connecting other components. 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 actual use, the first unidirectional transmission member 13 may be a unidirectional transmission member disposed on one side of the connecting rod 12. The second unidirectional transmission member 15 may be a unidirectional transmission member disposed on the other side of the connecting rod 12, where the adjusting member is correspondingly disposed in the middle of the connecting rod 12. The first unidirectional transmission member 13 and the second unidirectional transmission member 15 may also be both disposed in a position near the middle of the connecting rod 12, in which case the adjustment member 11 is disposed at the end of the connecting rod 12 correspondingly.

The unidirectional transmission member may comprise two parts which are relatively free to rotate in one direction, called the idle rotation direction, and which are not capable of transmitting torque. And are locked to each other in the other opposite direction, and cannot rotate relatively, and can transmit torque, which is called the load rotation direction. Here, the unidirectional transmission may be, but is not limited to: a one-way bearing and a ratchet wheel. The two parts can correspond to the two sides or the inner ring and the outer ring of the unidirectional transmission piece, one part can be transmitted with the reciprocating member, and the other part can be transmitted with the connecting rod 12. Here, the transmission includes a direct-connection rear transmission or a transmission through other transmission components.

The first reciprocating member may be a reciprocating member disposed at one side of the diopter adjusting member for driving the display screen and/or the imaging lens at one side to reciprocate. The second reciprocating member may be a reciprocating member disposed at the other side of the diopter adjusting member 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 used as 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 may be used as a member for driving the display screen and/or the imaging lens to reciprocate on the right side in fig. 1. Here, the reciprocating member may include a transmission group and a reciprocating assembly. For example, the reciprocating assembly may include a reciprocating screw, a timing belt, and the like.

It should be noted that, in this embodiment, the two eyes of the person are horizontally arranged, so the connecting rod needs to be horizontally arranged, but the adjustment of diopter needs to move up and down the display screen and/or the imaging lens, so that the transmission is performed by adopting the transmission group with the transmission direction axes perpendicular to each other. The bevel gear drive set employed in this embodiment fulfills this requirement, and in practice the worm gear, universal joint mechanism, etc. may also fulfill this function.

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

In some embodiments, the first reciprocating member may include a first bevel gear set and a first reciprocating screw 141. The first reciprocating screw 141 may be provided with two threads which are disposed in a crossing 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 unidirectional transmission member 13. The first reciprocating screw 141 is connected to an 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 group. The output end of the first bevel gear transmission group is connected with the first reciprocating screw rod 141 through the first unidirectional transmission member 13. That is, the first one-way transmission 13 may be provided between the first bevel gear transmission group and the connecting rod 12, or may be provided between the first bevel gear transmission group and the first reciprocating screw 141.

In this embodiment, the first unidirectional transmission member 13 is disposed between the first bevel gear transmission group and the connecting rod 12, specifically, the first bevel gear transmission group 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 disposed at one side of the diopter adjusting member that adjusts diopter. The first transverse bevel 143 may be a bevel laterally disposed on one side of the diopter adjustment member. The first reciprocating screw 141 may be a reciprocating screw placed at one side of the diopter adjusting member that adjusts diopter. 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 adjusting member of fig. 1.

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

The second reciprocating member includes a second bevel gear transmission group and a second reciprocating screw 161. The second reciprocating screw 161 may be provided with two threads which are disposed in a crossing 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 unidirectional transmission member 15, and the second reciprocating screw 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 group, and the output end of the second bevel gear transmission group is connected with a second reciprocating screw rod 161 through a second unidirectional transmission piece.

In this embodiment, the second unidirectional transmission 15 is disposed between the second bevel gear transmission set and the connecting rod 12, and specifically the second bevel gear transmission set described above may include a second vertical bevel gear 162 and a second horizontal bevel gear 163. The second vertical bevel gear 162 may be a bevel gear vertically placed at the other side of the diopter adjusting member that adjusts diopter. The second transverse bevel 163 may be a bevel laterally placed on the other side of the diopter adjusting member. The second reciprocating screw 161 may be a reciprocating screw placed at the other side of the diopter adjusting member of the adjustable diopter. 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 adjusting member in fig. 1.

The connecting rod 12 is fixedly connected coaxially with a part of the second unidirectional transmission member 15, and the second vertical bevel gear 162 is fixedly connected with another part of the second unidirectional transmission member 15. For example, a part of the second one-way transmission member 15 is coaxially fixed to one end of the connection 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 transverse bevel gear 163 may be disposed below the second vertical bevel gear 162 and engaged with the second vertical bevel gear 162. The second reciprocating screw 161 may be coaxially and fixedly coupled under 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, there are two arrangements of the unidirectional transmission member.

The first scheme is as follows: the unidirectional transmission piece 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, the driving force of the connecting rod can be transmitted to the input end of the bevel gear transmission group only when the connecting rod drives the unidirectional transmission piece to rotate towards the load direction, and the bevel gear transmission group can work; if the connecting rod drives the unidirectional transmission piece 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 group, and the bevel gear transmission group does not work; at the moment, the load directions of the two unidirectional transmission parts are opposite, and different bevel gear transmission groups can be driven to work through different rotation directions of the connecting rods, so that different reciprocating screw rods are driven to work and rotate.

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

The second scheme is as follows: the unidirectional transmission piece can also be arranged between the output end of the bevel gear transmission group and the reciprocating screw rod and is respectively connected with the output end of the bevel gear transmission group and the reciprocating screw rod, and the connecting rod is directly connected with the input end of the bevel gear transmission group.

In actual use, because the number of gears, the installation meshing positions of the gears, the directions and the like of different bevel gear transmission groups may be different, the matching relationship of the rotation directions of the output shafts and the input shafts of the different bevel gear transmission groups may be inconsistent; and because the unidirectional transmission piece can be arranged between the connecting rod and the input end of the bevel gear transmission group, and can also be arranged between the output end of the bevel gear transmission group and the reciprocating screw rod.

Therefore, the rotation directions of the output ends of the bevel gear transmission sets corresponding to the different rotation directions of the connecting rods can 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 identical. The rotation directions of the first and second reciprocating screw rods may be identical or may be inconsistent when the first and second reciprocating screw rods are operated.

The first scheme is adopted in the embodiment, namely one side of each one-way transmission piece is connected with two ends of the connecting rod, the other side of each one-way transmission piece is connected with the input end of the first bevel gear transmission group and the input end of the second bevel gear respectively, and the load rotation directions of the two one-way transmission pieces are opposite.

The two reciprocating screw rods are respectively connected with the output ends of the two bevel gear transmission groups. The first bevel gear transmission group and the second bevel gear transmission group both comprise bevel gears with two rotation axes perpendicular to each other, and the two bevel gear transmission groups are symmetrically arranged along the symmetry axis of the vertical direction of the connecting rod, and the rotation directions of the two reciprocating screw rods are the same when in work.

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

In some embodiments, the threads corresponding to the small to large diopter adjustment on the first reciprocating screw 141 may be forward threads. The threads corresponding to the adjustment of diopter from large to small, which are disposed on the first reciprocating screw rod 141, may be reverse threads. The pitch of the reverse thread may be greater than the pitch of the forward thread. The threads corresponding to the adjustment of the diopter from small to large may be forward threads disposed on the second reciprocating screw 161. The threads corresponding to the adjustment of diopter from large to small, which are disposed on the second reciprocating screw 161, may be reverse threads. The pitch of the reverse thread on the second reciprocating screw 161 may be greater than that of the forward thread. Here, the arrangement may be in a manner of being distributed on the outer surface of the body member. Therefore, when diopter is adjusted from small (zero) to large, diopter can be adjusted accurately due to the fact that the screw pitch is smaller, when diopter is adjusted from large to small (zero), diopter adjustment is relatively quick due to the fact that the screw pitch is larger and the diopter adjustment is relatively quick when the diopter adjustment is rotated, accurate adjustment is not conducted in the small (zero) to large adjustment direction, and the diopter adjustment device is only used for achieving quick return to zero of diopter.

In some embodiments, the display unit may include a first display 31 and a second display 32, which are disposed corresponding to left and right eyes of a person, respectively. The first display screen 31 and the second display screen 32 may be display screens on both sides of the diopter adjustment member, respectively, and may correspond to binocular, respectively. The display screen may be used to emit light and may include, but is not limited to, one of the following: an OLED (Organic Light-Emitting Diode), LCOS (Liquid Crystal On Silicon ), micro (Micro Light Emitting Diode), LBS (Laser Beam Scanning ) Light engine. 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 imaging lens 41 and the second imaging lens 42 may be imaging lenses disposed at both sides of the diopter adjustment member corresponding to the first display screen and the second display screen, respectively. The imaging lens may be a lens having an aberration correction function. The imaging lens may be a plastic or glass lens. The above-described imaging lens surface shape may include, but is not limited to, the following types: spherical lenses, aspherical lenses, free-form surface lenses, fresnel lenses, and flat lenses. Preferably, the surface shape of the imaging lens may be a spherical lens. Alternatively, the imaging lens may be an integral 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 unit and/or the imaging unit from above the bare engine cover unit 2, respectively. The optical bench top unit 2 may be a unit for shielding the optical bench. Here, the optical bench top unit 2 may include two optical bench top 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 provided with a reciprocating spiral groove corresponding to the 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 imaging lens 41. The second imaging lens 42 may be provided with a reciprocating spiral groove corresponding to a reciprocating screw rod 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 imaging lens 42. 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 first reciprocating member may include a reciprocating screw rod engaged with the reciprocating screw groove to be coupled to the first display screen 31. The second display 32 may be provided with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the second reciprocating member. The second reciprocating member may include a reciprocating screw rod engaged with the reciprocating screw groove to be coupled to the second display screen 32.

In some embodiments, when the rotation direction of the connecting rod 12 is the first rotation direction, the first unidirectional transmission member 13 can be driven to rotate in the load rotation direction, and the first reciprocating member 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 unidirectional 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 unidirectional transmission member cannot rotate relatively, but can transmit torque.

For example, the first imaging lens 41 may be provided with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the first reciprocating member. The first reciprocating member includes a reciprocating screw rod engaged with the reciprocating screw groove, so that the first reciprocating member may drive the first imaging lens 41 to reciprocate. The second imaging lens 42 may be provided with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the second reciprocating member. The second reciprocating member includes a reciprocating screw rod engaged with the reciprocating screw groove so that the second reciprocating member may reciprocate the second imaging lens 42. 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 first reciprocating member includes a reciprocating screw rod engaged with the reciprocating spiral groove, so that the first reciprocating member may drive the first display 31 to reciprocate. The second display screen 32 may be provided with a reciprocating spiral groove corresponding to the reciprocating screw rod included in the second reciprocating member. The second reciprocating member includes a reciprocating screw rod engaged with the reciprocating screw groove, so that the second reciprocating member may 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 advantageous effects: through the diopter adjusting member with adjustable diopter of some embodiments of the present disclosure, binocular diopter adjustment can be independently completed through one adjusting member, so that a user can wear an applied augmented reality device conveniently, and diopter adjustment operation is simplified. Specifically, the reason for the inconvenience of wearing by the user and the cumbersome operation of adjusting diopter is: the weight of the two driving members and the occupied space are large, so that the weight and the volume of the applied augmented reality equipment are large, the wearing of a user is inconvenient, and the user can complete the adjustment of the two-purpose diopters only by respectively adjusting the two driving members, so that the operation of adjusting the diopters is complicated. Based on this, the diopter adjustable diopter adjustment member 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 member, a connecting rod, a first unidirectional transmission piece, a first reciprocating member, a second unidirectional transmission piece and a second reciprocating member. The adjusting member can drive the connecting rod to rotate. One side of the first unidirectional transmission piece and one side of the second unidirectional transmission piece are sleeved at two ends of the connecting rod, and the other side of the first unidirectional transmission piece is in transmission connection with the first reciprocating member. The other side of the second unidirectional transmission piece is in transmission connection with the second reciprocating member. 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 unit and/or the imaging unit from above the upper cover unit of the optical unit, respectively. When the rotation direction of the connecting rod is a first rotation direction, the first unidirectional transmission piece can be driven to rotate in the load rotation direction, and at the moment, the first reciprocating member can drive the first display screen and/or the first imaging lens to reciprocate;

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

Fig. 2 is an exploded structural view of other embodiments of diopter adjustable diopter adjustment members according to this 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 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, an optical bench top 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 31 and the first imaging lens 41 may be fixedly connected. The second display 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 connected by means of adhesion. The second display screen 32 and the second imaging lens 42 may be fixedly connected by means of an adhesive.

In some embodiments, when the rotation direction of the connecting rod 12 can drive the first unidirectional transmission member 13 to rotate in the load rotation direction, the first reciprocating member 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 unidirectional 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 means may further include a positioning guide pin unit 5. The location guide pin unit 5 may include at least one location guide pin. The positioning guide pin may be a member for positioning and guiding the moving direction.

Alternatively, the above-described index pin unit 5 may include a first index pin group and a second index pin group. The first positioning guide pin group 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 set and the second positioning guide pin set may be positioning guide pin sets on both sides of the diopter adjusting member, respectively, and may correspond to the binocular.

In some embodiments, the bare engine upper cover unit 2 may be provided with respective 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 imaging 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 hole may be a hole position formed on the display screen unit and/or the imaging unit. For example, in fig. 2, positioning holes are opened on the first imaging lens 41 and the second imaging lens 42.

As can be seen in fig. 2, the diopter adjustable member of some embodiments corresponding to fig. 2 embodies an extension of the positioning guide pin as compared to the description of some embodiments corresponding to fig. 1. Therefore, the adjusting unit can more firmly drive the display screen unit and the imaging unit to reciprocate together under the guidance of the positioning guide pin. In addition, because the display screen unit is fixedly connected with the imaging unit, the distance between the display screen unit and the imaging unit is unchanged when diopter is adjusted. Thereby ensuring that the angle of view remains substantially unchanged during adjustment of the diopter. Therefore, the situation that the sizes of left and right eye pictures caused by inconsistent binocular degrees of a wearing user in the diopter adjustment process are inconsistent and are difficult to clearly fit to form dizziness can be avoided, the wearing comfort of the applied augmented reality equipment is improved, and the picture impression experience consistency of different vision users is ensured.

Fig. 3 is an exploded block diagram of still other embodiments of diopter adjustable diopter adjustment members according to this disclosure.

Fig. 4 is a combined block diagram of further embodiments of diopter adjustable diopter adjustment members according to this disclosure.

Fig. 3 and 4 include an adjusting member 11, a connecting rod 12, a first one-way transmission 13, a first reciprocating screw rod 141, a first vertical bevel gear 142, a first transverse bevel gear 143, a second one-way transmission 15, a second reciprocating screw rod 161, a second vertical bevel gear 162, a second transverse bevel gear 163, an optical bench top 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.

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 on both sides of the diopter adjusting member, respectively, and may correspond to the binocular, respectively. The nut support may be a support for the load.

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

Alternatively, the first display 31 may be fastened to the first nut bracket 43 by a snap-fit manner. The first imaging lens 41 may be fixed under the first nut bracket 43 by being engaged. The second display 32 may be fixed to the second nut bracket 44 by being engaged with the second display. The second imaging lens 42 may be fixed under the second nut bracket 44 by a snap-fit manner. Thus, 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 respectively rotatably connected to the above-mentioned bare engine cover unit 2. The first nut holder 43 is provided with a spiral groove corresponding to the first reciprocating member. The second nut bracket 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 on the first nut bracket 43 to drive the first display screen 31 and the first imaging lens 41 to reciprocate together with the first nut bracket 43. In the working state of the second reciprocating member, the second reciprocating member is engaged with the spiral groove on the second nut bracket 44, and can drive the second display screen 32 and the second imaging lens 42 to reciprocate together with the second nut bracket 44. The screw groove can be a screw hole which is arranged on the nut bracket and provided with an internal thread matched with the reciprocating screw rod, or can be a nut sleeve which is arranged on the nut bracket and is in matched transmission with the reciprocating screw rod.

In some embodiments, the dowel unit may include a first dowel pin set 51 and a second dowel pin set 52. The first positioning guide pin group 51 and the second positioning guide pin group 52 may be positioning guide pin groups on both sides of the diopter adjustment member, respectively, and may correspond to binocular, respectively. The first nut bracket 43 may be provided with respective positioning holes corresponding to the lower ends of the first positioning guide pin group 51. The second nut bracket 44 may be provided with respective positioning holes corresponding to the lower ends of the second positioning guide pin group 52. For example, the first positioning guide pin group 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 adjustment unit can be made to more firmly bring the display screen unit and the imaging unit into movement.

In some embodiments, the fixing holes may be respectively formed on a side of the bare engine cover unit 2 near the first reciprocating member and a side near the second reciprocating member. The positioning holes may be 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 adjustment unit may be further made to more firmly bring the display screen unit and the imaging unit into movement.

As can be seen in fig. 3 and 4, the diopter adjustable diopter adjustment member of some embodiments corresponding to fig. 3 embodies an extension to the nut bracket as compared to the description of some embodiments corresponding to fig. 1. Therefore, the display screen and the imaging lens can be fixed on the nut bracket, and the display screen and the imaging lens are fixed more firmly. The positioning holes of the positioning guide pins can be formed in the nut bracket, so that direct holes on a display screen or an imaging lens can be avoided. In addition, adopt nut support connection 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.

Fig. 5 is an exploded block diagram of some embodiments of a diopter adjustment member including an motorized gear transmission 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 member 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission member 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, an opto-mechanical upper 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 include an electric gear drive module that may include 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 stepper motor 111 can drive the connecting rod 112 to rotate through a transmission gear.

As can be seen in fig. 5, the diopter adjustable member of some embodiments corresponding to fig. 5 embodies an extension to the motorized gear drive module as compared to the description of some embodiments 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, the closed-loop adjustment of the corresponding monocular diopter is realized, and the diopter adjustment operation is simplified.

Fig. 6 is an exploded view of other embodiments of diopter adjustment members including motorized gear transmission modules 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 member 13, a first reciprocating screw 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission member 15, a second reciprocating screw 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, an optical bench top 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 in fig. 6, the diopter adjustable member of some embodiments corresponding to fig. 6 embodies an extension of the motorized gear drive module as compared to the description of some embodiments 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, the closed-loop adjustment of the corresponding monocular diopter is realized, and the diopter adjustment operation is simplified.

Fig. 7 is an exploded view of still other embodiments of diopter adjustment members including motorized gear transmission 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 member 13, a first reciprocating screw rod 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission member 15, a second reciprocating screw rod 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, an optical bench top 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.

Fig. 8 is a combined block diagram of still other embodiments of diopter adjustable diopter member including an electric gear transmission module according to this disclosure. Fig. 8 includes a stepping motor 111, a transmission gear 112, a connecting rod 12, a first one-way transmission member 13, a first reciprocating screw rod 141, a first vertical bevel gear 142, a first horizontal bevel gear 143, a second one-way transmission member 15, a second reciprocating screw rod 161, a second vertical bevel gear 162, a second horizontal bevel gear 163, an optical bench top 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 diagram of a combined structure of the diopter adjusting member with adjustable diopter shown in fig. 7 after being combined and rotated horizontally by 180 degrees.

As can be seen from fig. 7 and 8, the diopter adjustable diopter adjustment member of some embodiments of fig. 7 and 8 represents an extension to the motorized gear transmission module as compared to the description of some embodiments of 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, the closed-loop adjustment of the corresponding monocular diopter is realized, and the diopter adjustment operation is simplified.

Fig. 9 is a schematic structural view of some embodiments of an adjustable diopter optical module according to the present disclosure. Fig. 9 includes a diopter adjustment member 100 that adjusts diopters, a bare engine body holder 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 adjustment member 100, the optical machine body mount 200, the planar lens unit, and the curved lens unit described in any of the embodiments corresponding to fig. 1-8.

The above-described bare engine body mount 200 may be used to connect components including, but not limited to, diopter adjustment component 100, a planar lens unit, and a curved lens unit. The planar lens unit described above may be used to modulate an optical path. The planar lens unit may be provided with a planar lens and a film system having an optical path modulation function. The planar lens may be a planar lens made of plastic or glass. 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 light polarization modulation. The above-described film systems may include, but are not limited to, the following films: polarizing film, quarter wave plate, PBS (Polarization Beam Splitter), polarizing prism film. The curved lens unit described above may be used to perform aberration correction and optical path reflection. The curved lens unit may include a glass or plastic curved lens. The surface shape of the above curved lens may include, but is not limited to, the following types: spherical lenses, aspherical lenses, free-form surface lenses, fresnel lenses, and flat lenses. Preferably, the curved lens may have a spherical lens surface, and a transflective film is provided inside the curved lens. The transflective film may be provided inside the curved lens in a film coating manner or a film sticking manner. The above-described 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 bare engine body support 200. For example, the diopter adjusting member 100 may be fixed to the optical machine body holder 200 by a screw. Specifically, the screw may be connected to the screw hole on the carriage body 200 through the hole on the carriage upper cover unit. The planar lens unit and the curved lens unit may be respectively fixed to the optical bench body holder 200. For example, the planar lens unit and the curved lens unit may be fixed to the optical body holder 200 by adhesion. In this embodiment, the plane lens unit and the display screen unit are disposed at an angle of 45 ° on a side close to the eyes of the wearer. The curved lens unit is disposed on a side away from the wearer's eye and curves toward the side away from the wearer's eye. The diopter adjustment means 100 may include an imaging lens having an absolute value of power larger than that of the curved lens unit.

The imaging lens is the device with the focal power in the whole device and is the most core device for distributing the refractive angle of the focal power in the whole system.

The imaging lens may have a divergent effect on light entering the imaging portion, and the optical power thereof is positive. The curved lens unit may include a curved lens that converges light rays entering the imaging portion, and has a negative optical power.

In the working state of the diopter adjusting member 100, the diopter adjusting member 100 may 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 will be appreciated that as the distance between the display screen unit and/or imaging unit and the planar lens unit increases, the diopter of the diopter adjustable optical module may decrease. Conversely, when the distance between the display screen unit and/or the imaging unit and the plane lens unit is reduced, the diopter of the diopter-adjustable optical module may be increased.

Alternatively, the diopter adjustment member 100 may be adhered to the bare engine body support 200. Thus, the overall weight of the diopter-adjustable optical module can be reduced.

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

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

In some embodiments, the head mounted display device may include an adjustable diopter optical module 300 as 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 advantageous effects: with the head-mounted display device of some embodiments of the present disclosure, diopter adjustment through one adjustment member may be achieved, reducing the weight and volume of the head-mounted display device, and thus may be convenient for a user to wear. The closed loop adjustment of the corresponding monocular diopter can be independently finished through the rotation of one adjusting component in different directions, and the diopter adjustment operation is simplified.

The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the disclosure in the embodiments of the disclosure is not limited to the specific combination of features described above, but encompasses other technical solutions formed by any combination of features described above or their equivalents without departing from the spirit of the disclosure. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

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 member, a connecting rod, a first unidirectional transmission piece, a first reciprocating member, a second unidirectional transmission piece and a second reciprocating member;

the adjusting member can drive the connecting rod to rotate;

the first reciprocating member comprises a first bevel gear transmission group and a first reciprocating screw rod, the first reciprocating member is in transmission with the connecting rod through the first unidirectional transmission piece, the connecting rod is in transmission connection with the input end of the first bevel gear transmission group through the first unidirectional transmission piece, and the first reciprocating screw rod is connected with the output end of the first bevel gear transmission group;

or the connecting rod is connected with the input end of the first bevel gear transmission group, and the output end of the first bevel gear transmission group is connected with the first reciprocating screw rod through the first unidirectional transmission piece;

the second reciprocating member comprises a second bevel gear transmission group and a second reciprocating screw rod, the second reciprocating member is in transmission with the connecting rod through the second unidirectional transmission piece, the connecting rod is in transmission connection with the input end of the second bevel gear transmission group through the second unidirectional transmission piece, and the second reciprocating screw rod is connected with the output end of the second bevel gear transmission group;

Or the connecting rod is connected with the input end of the second bevel gear transmission group, and the output end of the second bevel gear transmission group is connected with the second reciprocating screw rod through a second unidirectional transmission piece;

the first reciprocating screw rod is provided with two threads which are arranged in a crossing manner and have opposite rotation directions, the threads which are arranged on the first reciprocating screw rod and correspond to the adjustment from small to large diopter are forward threads, the threads which are arranged on the first reciprocating screw rod and correspond to the adjustment from large to small diopter are reverse threads, and the pitch of the reverse threads is larger than that of the forward threads;

the second reciprocating screw rod is provided with two threads which are arranged in a crossing way and have opposite rotation directions, the threads which are arranged on the second reciprocating screw rod and correspond to the adjustment from small to large diopter are forward threads, the threads which are arranged on the second reciprocating screw rod and correspond to the adjustment from large to small diopter are reverse threads, and the screw pitch of the reverse threads on the second reciprocating screw rod is larger than that of the forward threads;

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 upper part of the upper cover unit of the optical machine downwards;

when the rotation direction of the connecting rod is the first rotation direction, the first unidirectional transmission piece can be driven to rotate in the load rotation direction, and at the moment, the first reciprocating member can drive the first display screen and/or the first imaging lens to reciprocate;

when the rotation direction of the connecting rod is the second rotation direction, the second unidirectional transmission piece 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;

the first rotational direction is opposite to the second rotational direction.

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

when the rotation direction of the connecting rod is the load rotation direction of the first unidirectional transmission piece, the first reciprocating member can drive the first display screen and the first imaging lens to reciprocate together;

When the rotation direction of the connecting rod is the load rotation direction of the second unidirectional transmission piece, the second reciprocating member can drive the second display screen and the second imaging lens to reciprocate together.

3. The diopter adjustable diopter power adjustment member of claim 2, wherein said diopter power adjustment member further comprises a locating guide pin unit;

the upper cover unit of the optical machine 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 adjustable 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 connected with the upper cover unit of the optical machine in a rotating way, a spiral groove corresponding to the first reciprocating member is arranged on the first nut bracket, and a spiral groove corresponding to the second reciprocating member is arranged on the second nut bracket;

in the working state of the first reciprocating member, the first reciprocating member is meshed with a 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;

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

5. The diopter adjustable diopter adjustment member of one of claims 1-4, wherein said adjustment member includes an adjustment knob that is sleeved on said connecting rod.

6. The diopter adjustable diopter adjustment member of one of claims 1-4, wherein said adjustment member comprises an motorized gear drive module including a stepper motor and a drive gear;

The connecting rod and the stepping motor output shaft are respectively provided with transmission gears which are meshed with each other, and the stepping motor can drive the connecting rod to rotate through the transmission gears under the working state.

7. The diopter adjustable diopter adjustment member of claim 4, wherein said positioning guide pin unit includes a first positioning guide pin set and a second positioning guide pin set;

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 formed in the second nut bracket.

8. A diopter adjustable diopter adjustment member according to claim 3, wherein the respective fixing holes are provided on a side of the opto-mechanical upper cover unit near the first reciprocating member and a side near the second reciprocating member, and the respective positioning holes are provided on a side of the imaging unit near the first reciprocating member and a side near the second reciprocating member.

9. A diopter adjustable diopter adjustment member according to claim 3, wherein the locating guide pin unit includes a first locating guide pin set including at least two first locating guide pins and a second locating guide pin set including at least two second locating guide pins.

10. The adjustable diopter power adjustment member of claim 4, wherein the first display screen is snap-fit secured above the first nut bracket, the first imaging lens is snap-fit secured below the first nut bracket, the second display screen is snap-fit secured above the second nut bracket, and the second imaging lens is snap-fit secured below the second nut bracket.

11. An adjustable diopter optical module, wherein the adjustable diopter optical module comprises a diopter adjustment member of one of claims 1-10, a carriage of a bare engine body, 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 an absolute value of optical power greater than an absolute value of optical power of the curved lens unit.

12. The adjustable diopter optical module of claim 11, wherein the diopter adjustment member is bonded above the opto-engine body bracket.

13. A head mounted display device, wherein the head mounted display device comprises an adjustable diopter optical module according to one of claims 11-12.