WO2018218442A1

WO2018218442A1 - Diopter adjustment display device and head-mounted display device

Info

Publication number: WO2018218442A1
Application number: PCT/CN2017/086371
Authority: WO
Inventors: 余林蔚
Original assignee: 深圳市柔宇科技有限公司
Priority date: 2017-05-27
Filing date: 2017-05-27
Publication date: 2018-12-06
Also published as: CN109643022A; CN109643022B

Abstract

Disclosed are a diopter adjustment display device and a head-mounted display device. The diopter adjustment display device comprises: an eyepiece lens group (110); a driving gear (120); a driven gear (130); a screen module (140); a potentiometer (150) comprising a resistor body (151) and at least one movable contact (152), when the driving gear (120) drives the driven gear (130) to rotate, the movable contact (152) being in contact with different positions of the resistor body (151), and the potentiometer (150) outputting different potential signals; a storage unit (160) storing the association relationship between a potential signal and the diopter; a processing unit (170) electrically connected to the potentiometer (150), the storage unit (160) and the screen module (140), the processing unit (170) determining the diopter corresponding to the potential signal according to the potential signal output from the potentiometer (150) and the association relationship stored in the storage unit (160), and displaying the diopter on the screen module (140), thereby improving the user experience.

Description

Diopter adjustment display device and head mounted display device

Technical field

The present invention relates to a diopter adjustment display device and a head mounted display device.

Background technique

Existing virtual reality devices such as VR (Virtual Reality, VR) glasses, Head Mount Display (HMD), etc., when the diopter adjustment is performed, the user cannot visually see the adjusted diopter degree on the display screen, affecting The user experience.

Summary of the invention

A technical problem to be solved by embodiments of the present invention is to provide a diopter adjustment display device and a head mounted display device. The adjusted diopter can be seen on the screen module to enhance the user experience.

In order to solve the above technical problem, the first aspect of the present invention provides a diopter adjustment display device, including:

Eyepiece module

Screen module

a driving gear mounted on the eyepiece module;

a driven gear rotatably sleeved on the eyepiece module and engaged with the driving gear; the driving gear is rotated by the driving force to rotate the driven gear, and the rotation of the driven gear changes a relative distance between the screen module and the eyepiece module to adjust the diopter;

a potentiometer comprising a resistor body and at least one movable contact; one of the resistor body and the movable contact is located on the driven gear, and the other is located on the driving gear, when the driving gear drives The movable contact is in contact with different positions of the resistor body when the driven gear rotates, and the potentiometer outputs different potential signals;

a storage unit that stores an association relationship between the potential signal and diopter;

a processing unit electrically connected to the potentiometer, the storage unit, and the screen module, wherein the processing unit is determined according to a potential signal output by the potentiometer and an association relationship stored by the storage unit The diopter corresponding to the potential signal is determined and the diopter is displayed on the screen module.

A second aspect of the present invention provides a head mounted display device comprising the above-described diopter adjustment display device.

Embodiments of the present invention have the following beneficial effects:

Since the driving gear is driven to rotate the driven gear, the rotation of the driven gear changes a relative distance between the screen module and the eyepiece module to adjust the diopter, the resistor body and the One of the movable contacts is located on the driven gear, and the other is located on the driving gear. When the driving gear drives the driven gear to rotate, the movable contact is in contact with different positions of the resistor body, and the potentiometer output is different. a potential signal, the storage unit stores an association relationship between the potential signal and diopter, the processing unit is electrically connected to the potentiometer, the storage unit and the screen module, respectively, and the processing unit outputs according to the potentiometer The potential signal and the correlation stored by the storage unit determine the diopter corresponding to the potential signal and display the diopter in the screen module. Thus, when the user adjusts the diopter, the diopter can be displayed on the screen module, improving the user experience.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a perspective view of a diopter adjustment display device according to an embodiment of the present invention;

2 is an exploded view of a diopter adjustment display device according to an embodiment of the present invention;

3 is a block diagram of a potentiometer, a processing unit, and a storage unit according to an embodiment of the present invention;

4 is a perspective view of a screen module in accordance with an embodiment of the present invention;

Figure 5 is a perspective view of a driving gear according to an embodiment of the present invention;

Figure 6 is a perspective view of a driven gear according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "comprising" and "having", and any variations thereof, appearing in the specification, the claims, and the drawings are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively Other steps or units inherent to these processes, methods, products or equipment. Moreover, the terms "first," "second," and "third," etc. are used to distinguish different objects, and are not intended to describe a particular order.

The embodiment of the present invention provides a diopter adjustment display device. Referring to FIG. 1 to FIG. 3, the diopter adjustment display device includes an eyepiece module 110, a screen module 140, a driving gear 120, a driven gear 130, and a potentiometer 150. The storage unit 160 and the processing unit 170.

The eyepiece module 110 is remote from the end of the driven gear 130 for viewing the eyes of the user.

The screen module 140 is sleeved on the eyepiece module 110, and the screen module 140 is movable relative to the eyepiece module 110 to change the distance between the screen module 140 and the eyepiece module 110, thereby adjusting The diopter of the display device (not shown). Specifically, the screen module 140 can be close to the eyepiece module 110 or away from the eyepiece module 110, so that the diopter can be changed. In this embodiment, when the screen module 140 is located at different positions relative to the eyepiece module 110, the corresponding diopter is known. For example, it has been experimentally determined that the screen module 140 moves at different positions (ie, the distance of the screen module 140). The diopter at the time when the distance between the eyepiece modules 110 is different.

Referring to FIG. 1 , FIG. 2 and FIG. 5 , the driving gear 120 is mounted on the eyepiece module 110 . In this embodiment, the driving gear 120 is mounted above the eyepiece module 110. In other embodiments, the driving gear 120 can also be installed at other positions of the eyepiece module, such as the left side or the right side. Fang et al.

In order to limit the driving gear 120 and facilitate the user to manually adjust the driving gear 120, in the embodiment, the diopter adjusting display device further includes an adjusting knob 111, an upper mounting seat 112 and a lower mounting seat 113. The lower mount 113 is fixedly mounted on the eyepiece module 110, and the driving gear 120 is sandwiched between the upper mount 112 and the lower mount 113. Specifically, the driving gear 120 The gear body 121 and the mounting shaft 123 are provided with a rod, the upper mounting seat 112 is provided with a through hole, and the gear body 121 is located between the lower mounting seat 113 and the upper mounting seat 112. The through hole through which the mounting shaft 123 passes out of the upper mount 112 is assembled with the adjustment knob 111. Specifically, the adjusting knob 111 is provided with a mounting hole (not shown), and the mounting shaft 123 is mounted to the mounting hole to fix the adjusting knob 111 and the driving gear 120, that is, when the user When the adjustment knob 111 is rotated by hand, the driving gear 120 rotates in synchronization.

Referring to FIG. 1 , FIG. 2 and FIG. 6 , the driven gear 130 is rotatably sleeved on the eyepiece module 110 , and the driven gear 130 is meshed with the driving gear 120 . The driving gear 120 is driven to rotate to drive the driven gear 130 to rotate. The rotation of the driven gear 130 changes the relative distance between the screen module and the eyepiece module to adjust the diopter of the display device. In this embodiment, the rotation plane of the driven gear 130 is perpendicular to the movement route of the screen module 140. In the embodiment, the driven gear 130 has a large through hole 131 at the center thereof, and the driven gear 130 is sleeved on one end of the eyepiece module 110 and one end of the screen module 140. A side of the driven gear 130 adjacent to the eyepiece module 110 is provided with a notch, and the notch is provided with a rod. The rod of the driving gear 120 is meshed with the rod of the driven gear 130, so that the driving gear 120 rotates to drive the driven gear 130 to rotate.

In the present embodiment, the rotational plane of the driven gear 130 and the rotational plane of the drive gear 120 are perpendicular to each other. In this embodiment, the rotation plane of the driving gear 120 is a horizontal plane, and the rotation plane of the driven gear 130 is a vertical plane. Since the rotation planes of the two gears are perpendicular to each other, space can be saved. In the embodiment, the driving gear 120 and the driven gear 130 are both bevel gears to realize that the rotating plane of the driving gear 120 and the rotating plane of the driven gear 130 are perpendicular.

Referring to FIGS. 2, 3, 5 and 6, the potentiometer 150 includes a resistor body 151 and at least one movable contact 152. In the present embodiment, the resistor body 151 is located on the driven gear 130. Specifically, the resistor bodies 151 are circumferentially arranged on the driven gear 130. In the present embodiment, the number of the movable contacts 152 is one, which is elongated, and the movable contacts 152 are located on the driving gear 120. When the driving gear 120 drives the driven gear 130 to rotate, different positions of the elongated moving contact 152 are in contact with different positions of the resistor body 151, so that the potentiometer 150 outputs different potential signals. In other embodiments, the potentiometer 150 includes a plurality of moving contacts 152. The plurality is greater than or equal to two. Specifically, the plurality of movable contacts 152 are sequentially arranged in the circumferential direction on the driving gear 120, for example, includes six moving contacts 152, and the six moving contacts 152 are divided into six positions in the circumferential direction, respectively being the first position, the second position, the third position, the fourth position, and the fifth position In the sixth position, the movable contacts 152 located in the first position to the sixth position during the rotation of the driving gear 120 are respectively in contact with the resistor body 151. When the driving gear 120 drives the driven gear 130 to rotate, the movable contact 152 at different positions contacts the resistor body 151, so that the potentiometer 150 outputs a different potential signal. In this embodiment, the potential signal is a voltage value. In other embodiments, the potential signal may also be a resistance value or a current value or the like. In this embodiment, the resistor body 151 is electrically connected to the power supply unit. For example, both ends of the resistor body 151 are electrically connected to the positive and negative poles of the DC power source, or one end of the resistor body 151 is electrically connected to the DC power source. The other end is electrically grounded, so that the potentiometer 150 outputs a different voltage value depending on the contact position of the movable contact 152 and the resistor body 151. Of course, in other embodiments, the movable contact may also be located on the driven gear, and the resistor may also be located on the driving gear.

The storage unit 160 stores the correlation relationship between the potential signal and the diopter. In the present embodiment, the relationship between the potential signal and the diopter is as follows, which will be separately described below.

1. The storage unit 160 stores a potential signal-diopter table, and the potential signal-diopter table records the correlation between different potential signals output by the potentiometer 150 and different diopter, where the potential signal The relationship between the diopter and the diopter is one-to-one. In the present embodiment, the potential signal is a voltage value, and the potential signal-diopter is described by taking a voltage value-diopter as an example, as shown in Table 1.

Table 1

电压值Voltage value	屈光度Diopter
1V1V	-5D-5D
2V2V	-3D-3D
3V3V	-1D-1D
4V4V	2D2D
4.5V4.5V	4D4D
5V5V	6D6D

According to Table 1, different voltage values can be associated with corresponding diopter, so that potentiometer 150 After the output voltage value is determined, that is, after the potential signal is determined, the corresponding diopter can be obtained.

2. The storage unit 160 stores a relational expression for calculating an association relationship between different potential signals and different diopter, and the relationship may be a linear relationship or a curve relationship. In this embodiment, the potential signal is a voltage value, and the relationship is as follows:

Dn=(Vn-V0)/K+D0;

Wherein, K, V0, and D0 are constants, Vn is a voltage value output by the potentiometer 150, and Dn is a diopter corresponding to a voltage value output by the potentiometer 150, that is, a diopter of a position of the current screen module 140. .

3. The storage unit 160 stores a potential signal range-diopter table, and the potential signal range-diopter table records the relationship between different potential signal ranges output by the potentiometer 150 and different diopter, that is, one The potential signal range corresponds to one diopter. Here, the potential signal is a voltage value, and the voltage value range - diopter table is shown in Table 2.

Table 2

电压值范围Voltage range	屈光度Diopter
5V-4V(不含4V)5V-4V (excluding 4V)	-5D-5D
4V-3.2V(不含3.2V)4V-3.2V (excluding 3.2V)	-3D-3D
3.2V-2.5V(不含2.5V)3.2V-2.5V (excluding 2.5V)	-1D-1D
2.5V-2.0V(不含2.0V)2.5V-2.0V (excluding 2.0V)	2D2D
2.0V-1.2V(不含1.2V)2.0V-1.2V (excluding 1.2V)	4D4D
1.2V-0V(不含0V)1.2V-0V (excluding 0V)	6D6D

Since the movable contact 152 is in contact with different positions of the resistor body 151, the potentiometer 150 outputs a different potential signal, and falls within the range of the potential signal in Table 2 according to the potential signal, thereby obtaining the corresponding diopter.

Of course, in other embodiments, the storage unit may also store other information related to the diopter of the potential signal, as long as the potential signal can be correlated with the diopter.

The processing unit 170 is electrically connected to the potentiometer 150, the storage unit 160, and the screen module 140, respectively, and the processing unit 170 can obtain a potential signal output by the potentiometer 150, according to the electric The potential signal output by the bitper 150 and the correlation stored by the storage unit 160 determine the diopter corresponding to the potential signal and display the diopter in the screen module. Hereinafter, the different relationship between the potential signal stored in the above-described storage unit 160 and the diopter will be described separately.

1. When the memory unit 160 stores the potential signal-diopter, since the processing unit 170 is electrically connected to the potentiometer 150, when the movable contact 152 is in contact with different positions of the resistor 151, the potentiometer 150 at this time. Outputting different potential signals, the processing unit 170 can obtain the potential signal, and the processing unit 170 searches for the potential signal-diopter table according to the potential signal, so that the processing unit 170 obtains the diopter corresponding to the potential signal, and the processing unit 170 controls the screen. Module 140 displays the diopter. The following is an example in which the potential signal is used as a voltage value. Referring to Table 1, when the processing unit obtains a voltage value of 3V, the processing unit 170 searches the table 1 according to the potential signal, thereby obtaining a corresponding value when the voltage value is 3V. The diopter -1D, the processing unit 170 controls the screen module 140 to display the diopter -1D.

2. When the storage unit 160 stores the relationship, since the processing unit 170 is electrically connected to the potentiometer 150, when the movable contact 152 is in contact with different positions of the resistor 151, the potentiometer 150 outputs differently at this time. a potential signal, the processing unit 170 can obtain a potential signal, the processing unit 170 calculates a diopter corresponding to the potential signal according to the potential signal and the relationship, and then the processing unit 170 controls the screen module 140 shows the diopter. Hereinafter, the potential signal is used as a voltage value, and the above relational expression is taken as an example. Assuming that the voltage value output by the potentiometer 150 is V3, the processing unit 170 calculates and obtains the potential signal according to the voltage value V3 and the relational expression. Corresponding diopter, specifically, the voltage value V3 is substituted into the above relationship, and the processing unit 170 can calculate the diopter D3 corresponding to the voltage value as follows:

D3=(V3-V0)/K+D0;

Since V0, K, and D0 are all constants, and the current voltage V3 is obtained again, the processing unit 170 can obtain the diopter D3 corresponding to the voltage value, and thereafter, the processing unit 170 controls the screen module 140 to display the diopter D3.

3. When the memory unit 160 stores the potential signal range-diopter table, since the processing unit 170 is electrically connected to the potentiometer 150, when the movable contact is in contact with different positions of the resistor, the potentiometer 150 outputs at this time. Different potential signals, the processing unit 170 can obtain a potential signal, and the processing unit 170 searches for a potential signal range-diopter table according to the potential signal, so that the processing unit 170 can To obtain the diopter corresponding to the potential signal, specifically, the processing unit 170 first determines which potential signal range the potential signal falls into, and then determines the corresponding diopter according to the potential signal range. The processing unit 170 controls the screen module 140 to display the diopter. Hereinafter, the potential signal is taken as a voltage value, and Table 2 is taken as an example. Assuming that the voltage value output by the potentiometer 150 is 2.7V, the processing unit 170 can obtain a voltage value of 2.7V, and then the processing unit 170 searches the table 2 for the voltage value. 2.7V falls within a voltage range of 3.2V-2.5V (excluding 2.5V), and the corresponding diopter is determined to be -1D according to the voltage value range, thereby obtaining a corresponding diopter -1D, after which the processing unit 170 controls the The screen module 140 displays the diopter -1D.

In this embodiment, since the driving gear 120 is driven to rotate the driven gear 130, the rotation of the driven gear 130 changes the relative distance between the screen module 140 and the eyepiece module 110. To adjust the diopter, one of the resistor body 151 and the movable contact 152 is located on the driven gear 130, and the other is located on the driving gear 120. When the driving gear 120 drives the driven gear 130 to rotate, the movable contact 152 is in contact with different positions of the resistor body 151, the potentiometer 150 outputs different potential signals, and the storage unit 160 stores the relationship between the potential signal and the diopter, and the processing unit 170 respectively and the potential The device 150, the storage unit 160 and the screen module 140 are electrically connected, and the processing unit 170 determines the diopter corresponding to the potential signal according to the potential signal output by the potentiometer 150 and the correlation relationship stored by the storage unit. The diopter is displayed on the screen module 140. Thus, when the user adjusts the diopter, the diopter can be displayed on the screen module 140, improving the user's experience.

Referring to FIGS. 2 and 4 , the screen module 140 includes a display screen 143 and a bracket 144 mounted on the bracket 144 and electrically connected to the processing unit 170. The bracket 144 is cylindrical, and the bracket 144 is connected to the driven gear 130 and the eyepiece module 110, respectively. Specifically, the bracket 144 is sleeved on the associated eyepiece module 110, and the driven gear 130 is sleeved on the bracket 144. When the driven gear 130 rotates relative to the eyepiece module 110, the slave The rotation of the movable gear 130 drives the bracket 144 to move relative to the eyepiece module 110, thereby moving the screen module 140 relative to the eyepiece module 110, that is, the relative distance between the screen module 140 and the eyepiece module 110. change.

In this embodiment, in order to realize the movement of the screen module 140 relative to the eyepiece module 110, even if the relative distance between the screen module 140 and the eyepiece module 110 is changed, in this embodiment, please refer to As shown in FIG. 1 , FIG. 2 , FIG. 4 and FIG. 6 , the eyepiece module 110 is provided with a sliding slot 114 on the side of the driven gear 130 , and the sliding slot 114 is parallel to the central axis of the driven gear 130 . That is, it is parallel to the moving route of the screen module 140. In the present embodiment, the number of the chutes 114 is two or other numbers, and the chutes 114 are located on the outer surface of the eyepiece module 110. In the embodiment, the screen module 140 is sleeved on the eyepiece module 110, and the screen module 140 is provided with a sliding block 141 corresponding to the sliding slot 114. In the embodiment, the number of the sliding blocks 141 is also two or other numbers, the sliding block 141 is located on the inner sidewall of the screen module 140, and the two sliding blocks 141 are correspondingly located in the two The screen module 140 is further provided with a detachable guide post 142. The number of the guide posts 142 is two or other numbers, and the screen module 140 passes through the guide post and the slave The gears 130 are linked. In this embodiment, the sliding block 141 and the guiding post 142 are all on the bracket 144 of the screen module 140. The driven gear 130 is provided with an arcuate hole 132 extending from a side of the eyepiece module 110 toward a side away from the eyepiece module 110. In the embodiment, the arcuate hole 132 is The two guide posts 142 of the screen module 140 penetrate into the two arcuate holes 132, respectively, in two or other numbers. Therefore, when the driving gear 120 is rotated by force, the driving gear 120 drives the driven gear 130 to rotate, and the driven gear 130 applies a force to the guiding post 142 through the arc hole 132, thereby sliding the screen module 140. The slot 114 is moved to move the screen module 140 relative to the eyepiece module 110 to change the relative distance between the screen module 140 and the eyepiece module 110. In addition, in other embodiments, the eyepiece module is provided with a sliding block on an outer side wall of the side of the driven gear, and a sliding slot is disposed at a position of the inner side wall of the screen module corresponding to the sliding block, and the sliding The block module is further disposed with a guide post, and the driven gear is provided with an arc-shaped hole extending from a side of the eyepiece module toward a side away from the eyepiece module. The guide post penetrates into the arcuate hole.

In this embodiment, at least two circumferentially spaced arcuate protrusions 145 are disposed on the outer sidewall of the bracket 144 of the screen module 140, and the bracket 144 passes through the two arcuate protrusions 145 and the The driven gear 130 is in contact, so that when the driven gear 130 rotates, the inner side wall of the driven gear 130 comes into contact with the curved bump 145 so as not to contact the entire outer surface of the bracket 144, and the contact area can be reduced. Thereby, the sliding friction with the screen module 140 when the driven gear 130 rotates can be reduced. In addition, in the embodiment, two of the guide posts 142 are respectively located on the two arcuate bumps 145. Additionally, in other embodiments, at least two circumferentially spaced arcuate projections may also be disposed on the inner sidewall of the driven gear Upper, the driven gear is in contact with the outer sidewall of the bracket by at least two curved bumps.

In this embodiment, in order to save labor, the driving gear 120 is manually adjusted, and the rotation speed of the driving gear 120 is greater than the rotation speed of the driven gear 130. Specifically, in the embodiment, the driving gear 120 The radius is smaller than the radius of the driven gear 130. The angle range of the active gear 120 having effective effective teeth on the circumference is greater than the range of angles of the driven gear 130 having effective teeth on the circumference. Here, the effective roding refers to the engagement of the driving gear 120 and the driven gear 130 when it is rotated. Rodent. In the present embodiment, the driving gear 120 is provided with a ring of teeth on the circumference, and the driven gear 130 has only a part of the circumference provided with continuous rods, that is, the driving gear 120 has effective rod teeth on the circumference. The angular range is 360 degrees, and the effective gear has an effective range of less than 360 degrees, such as 90 degrees, 120 degrees, 150 degrees, etc., so that the driven gear 130 cannot rotate a complete circle, thereby When the driving gear 120 drives the driven gear 130 to rotate in one direction, the potentiometer 150 does not output the same potential signal.

In this embodiment, the processing unit 170 and the storage unit 160 are integrated, but the present invention is not limited thereto. In other embodiments, the processing unit and the storage unit may also be separately provided.

Embodiments of the present invention also provide a head mounted display device including the above-described diopter adjustment display device. In this embodiment, the head mounted display device is a head mounted display or a head mounted virtual reality glasses or the like.

It should be noted that the various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments are mutually referred to. can. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

Through the description of the above embodiments, the present invention has the following advantages:

Since the driving gear is driven to rotate the driven gear, the rotation of the driven gear changes a relative distance between the screen module and the eyepiece module to adjust the diopter, the resistor body and the One of the movable contacts is located on the driven gear, and the other is located on the driving gear. When the driving gear drives the driven gear to rotate, the movable contact is in contact with different positions of the resistor body, and the potentiometer output is different. a potential signal, the storage unit stores an association relationship between the potential signal and diopter, and the processing unit is electrically connected to the potentiometer, the storage unit and the screen module, respectively, the processing unit The diopter corresponding to the potential signal is determined according to the potential signal output by the potentiometer and the correlation stored by the storage unit, and the diopter is displayed on the screen module. Thus, when the user adjusts the diopter, the diopter can be displayed on the screen module, improving the user experience.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

A diopter adjustment display device, comprising:

Eyepiece module

Screen module

a driving gear mounted on the eyepiece module;

a driven gear rotatably sleeved on the eyepiece module and engaged with the driving gear; the driving gear is rotated by the driving force to rotate the driven gear, and the rotation of the driven gear changes a relative distance between the screen module and the eyepiece module to adjust a diopter of the display device;

a potentiometer comprising a resistor body and at least one movable contact; one of the resistor body and the movable contact is located on the driven gear, and the other is located on the driving gear, when the driving gear drives The movable contact is in contact with different positions of the resistor body when the driven gear rotates, and the potentiometer outputs different potential signals;

a storage unit storing an association relationship between the potential signal and diopter;

a processing unit electrically connected to the potentiometer, the storage unit, and the screen module, wherein the processing unit determines the potential signal phase according to a potential signal output by the potentiometer and an association relationship stored by the storage unit Corresponding diopter and the diopter are displayed on the screen module.
The diopter adjustment display device according to claim 1, wherein said storage unit stores a potential signal-diopter, said potential signal-diopter recording different potential signals output by said potentiometer and different diopter The relationship between the processing units is used to:

Obtaining a potential signal output by the potentiometer;

Finding the potential signal-diopter according to the potential signal and obtaining a diopter corresponding to the potential signal.
The diopter adjustment display device according to claim 1, wherein said storage unit stores a relational expression for calculating an association relationship between different potential signals and different diopter, said processing unit for:

Obtaining a potential signal output by the potentiometer;

A diopter corresponding to the potential signal is obtained based on the potential signal and the relational expression.
The diopter adjustment display device according to claim 3, wherein said potential signal is a voltage value, and said relationship is:

Dn=(Vn-V0)/K+D0;

Wherein, K, V0, and D0 are constants, Vn is a voltage value output by the potentiometer, and Dn is a diopter corresponding to a voltage value output by the potentiometer.
The diopter adjustment display device according to claim 1, wherein said storage unit stores a potential signal range-diopter table, said potential signal range-diopter table recording a range of different potential signals output by said potentiometer The relationship between the different diopter, the processing unit is used to:

Obtaining a potential signal output by the potentiometer;

Finding a potential signal range-diopter according to the potential signal;

Obtaining a range of potential signals into which the potential signal falls;

A corresponding diopter is determined based on the range of potential signals.
The diopter adjustment display device according to any one of claims 1 to 5, wherein the potentiometer includes a plurality of movable contacts; the plurality of movable contacts are sequentially arranged in the circumferential direction on the driving gear The resistor body is circumferentially arranged on the driven gear; or the plurality of movable contacts are sequentially arranged on the driven gear in a circumferential direction, and the resistor bodies are arranged in the circumferential direction. On the drive gear.
The diopter adjustment display device according to any one of claims 1 to 5, wherein a rotational plane of the driving gear and a rotational plane of the driven gear are perpendicular to each other.
A diopter adjustment display device according to claim 7, wherein said driving gear and said driven gear are both bevel gears.
The diopter adjustment display device according to any one of claims 1 to 5, wherein a side of the eyepiece module adjacent to the driven gear is provided with a sliding slot, and the screen module corresponds to the position of the sliding slot. a sliding block is disposed, the sliding block is located in the sliding slot, the screen module is further provided with a guiding column, and the driven gear is provided with an arc hole, and the arc hole is close to the eyepiece module One side extends away from a side of the eyepiece module, and the guide post penetrates into the arc hole; or

a sliding block is disposed on a side of the eyepiece module adjacent to the driven gear, and a sliding slot is disposed at a position corresponding to the sliding block on the inner side of the screen module, the sliding block is located in the sliding slot, and the sliding screen is located in the sliding slot The group is further provided with a guide column, and the driven gear is provided with an arc-shaped hole extending from a side close to the eyepiece module toward a side away from the eyepiece module, and the guide column penetrates In the arcuate hole.
The diopter adjustment display device according to any one of claims 1 to 5, wherein the screen module comprises a display screen and a bracket, and the display screen is mounted on the bracket and electrically connected to the processing unit. The bracket is sleeved on the eyepiece module, and the driven gear is sleeved on the bracket.
The diopter adjustment display device according to claim 10, wherein the outer side wall of the bracket of the screen module is provided with at least two circumferentially spaced arcuate projections, and the bracket passes through the curved bumps The driven gear contacts; or,

The inner side wall of the driven gear is provided with at least two circumferentially spaced arcuate projections, and the driven gear is in contact with the outer side wall of the bracket through the arcuate projection.
The diopter adjustment display device according to any one of claims 1 to 5, wherein a rotational speed of the drive gear is greater than a rotational speed of the driven gear.
A diopter adjustment display device according to claim 12, wherein said active gear has an effective range of angular extents on its circumference greater than an angular range of effective teeth on said driven gear circumference.
A diopter adjustment display device according to claim 13, wherein said resistor The body is located on the driven gear, and the angular range of the effective gear on the circumference of the driven gear is less than 360°.
The diopter adjustment display device according to any one of claims 1 to 5, further comprising an adjustment knob, wherein the driving gear comprises a mounting shaft, and the adjusting knob is provided with a mounting hole corresponding to the mounting shaft, The mounting shaft is mounted into the mounting hole to enable the adjustment knob to rotate in synchronization with the driving gear.
The diopter adjustment display device according to claim 15, further comprising an upper mount and a lower mount, wherein the lower mount is fixed to the eyepiece module, and the driving gear is clamped to the upper mount Between the lower mount and the lower mount, the adjustment knob is disposed on the upper mount, and the mounting shaft passes through the mounting hole of the upper mount mounted to the adjustment knob.
A head mounted display device comprising the diopter adjustment display device according to any one of claims 1-16.