CN113985606A - VR head display equipment, lens degree determination method and related components - Google Patents
VR head display equipment, lens degree determination method and related components Download PDFInfo
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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Abstract
The application discloses VR head display equipment which comprises an optical component corresponding to a left eye, an optical component corresponding to a right eye and a screen; wherein each optical assembly comprises a first lens, a second lens and an adjusting device, the main optical axes of the first lens and the second lens are coincident, and the adjusting device is used for changing the combined focal length of the optical assembly by adjusting the distance between the first lens and the second lens. The utility model provides a lens number of degrees regulation of the first equipment that shows of VR can be realized to this application. The application also discloses a lens degree determining method of the VR head display device, a lens degree determining device of the VR head display device, an electronic device and a storage medium, and the lens degree determining method and the electronic device have the beneficial effects.
Description
Technical Field
The application relates to the technical field of virtual reality, in particular to VR head display equipment, a lens degree determination method and related components.
Background
Virtual Reality technology (VR) can simulate a Virtual environment to give a person a sense of environmental immersion. Along with the use scene of the first equipment that shows of VR is abundanter, the personnel's quantity that uses the first equipment that shows also is constantly climbing. The user mainly relies on the vision to gather information when using the first equipment that shows of VR, can appear a variety of inconveniences when the user of myopia or hypermetropia uses the first equipment that shows of VR.
Therefore, how to realize the lens power adjustment of the VR head display device is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at providing a first equipment that shows of VR, a method for confirming the lens number of the first equipment that shows of VR, a lens number of the first equipment that shows of VR confirming device, an electronic equipment and a storage medium, can realize the first lens number of showing of VR regulation of device.
In order to solve the above technical problem, the present application provides a VR head display device, which includes an optical component corresponding to a left eye, an optical component corresponding to a right eye, and a screen;
wherein each optical assembly comprises a first lens, a second lens and an adjusting device, the main optical axes of the first lens and the second lens are coincident, and the adjusting device is used for changing the combined focal length of the optical assembly by adjusting the distance between the first lens and the second lens.
Further, the distance between the first lens and the screen is larger than the distance between the second lens and the screen;
correspondingly, the first lens is fixed at a first target position of the VR head display device, and the adjusting device controls the second lens to move along a main optical axis;
or, the second lens is fixed at a second target position of the VR head display equipment, and the adjusting device controls the first lens to move along the main optical axis;
or, the adjusting device controls the first lens and the second lens to move along the main optical axis.
The application also provides a lens power determination method of the VR head display device, which is applied to the VR head display device, wherein an adjusting device of the VR head display device comprises a slide rheostat, and the resistance of an access circuit of the slide rheostat changes when the adjusting device adjusts the distance between a first lens and a second lens, and the lens power determination method comprises the following steps:
acquiring a first corresponding relation between the lens spacing and the varistor voltage; wherein the lens pitch is a distance between the first lens and the second lens, and the varistor voltage is a voltage across a resistor of the sliding varistor access circuit;
acquiring a second corresponding relation between the lens distance and the lens power;
generating a corresponding relation between the rheostat voltage and the lens power according to the first corresponding relation and the second corresponding relation;
and reading the current rheostat voltage of the sliding rheostat, and determining the current lens power corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens power.
Further, after determining the current lens power corresponding to the current varistor voltage according to the correspondence between the varistor voltage and the lens power, the method further includes:
displaying the current lens power to a screen of the VR head display device.
Further, after determining the current lens power corresponding to the current varistor voltage according to the correspondence between the varistor voltage and the lens power, the method further includes:
judging whether the difference between the current lens power and the power of the currently displayed lens power on the screen is within a preset interval or not;
and if not, updating the current lens power to a screen of the VR head display equipment.
Further, the method also comprises the following steps:
if feedback information of the left eye degree which is input by a user and is adjusted is received, locking an adjusting device corresponding to the left eye;
and if the feedback information of the adjusted right eye degree input by the user is received, locking the adjusting device corresponding to the right eye.
Further, the method also comprises the following steps:
judging whether the adjusting devices corresponding to the left eye and the right eye are locked or not;
if yes, continuing to play the target content;
if not, the target content is paused to be played.
The present application further provides a lens power determining apparatus for a VR head display device, applied to the above VR head display device, wherein an adjusting device of the VR head display device includes a sliding rheostat, a resistance of an access circuit of the sliding rheostat changes when the adjusting device adjusts a distance between a first lens and a second lens, and the lens power determining apparatus includes:
the first relation acquisition module is used for acquiring a first corresponding relation between the lens spacing and the varistor voltage; wherein the lens pitch is a distance between the first lens and the second lens, and the varistor voltage is a voltage across a resistor of the sliding varistor access circuit;
the second relation acquisition module is used for acquiring a second corresponding relation between the lens spacing and the lens power;
a third relationship obtaining module, configured to generate a corresponding relationship between the varistor voltage and the lens power according to the first corresponding relationship and the second corresponding relationship;
and the degree determining module is used for reading the current rheostat voltage of the sliding rheostat and determining the current lens degree corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens degree.
The present application also provides a storage medium having a computer program stored thereon, which when executed, implements the steps performed by the lens power determination method of the VR head display apparatus.
The application also provides an electronic device, which comprises a memory and a processor, wherein the memory is stored with a computer program, and the processor calls the computer program in the memory to realize the steps executed by the lens power determination method of the VR head display device.
The application provides VR head display equipment which comprises an optical component corresponding to a left eye, an optical component corresponding to a right eye and a screen; wherein each optical assembly comprises a first lens, a second lens and an adjusting device, the main optical axes of the first lens and the second lens are coincident, and the adjusting device is used for changing the combined focal length of the optical assembly by adjusting the distance between the first lens and the second lens.
The VR head display device provided by the application comprises optical components corresponding to the left eye and the right eye, and each optical component comprises a first lens, a second lens and an adjusting device. The user's single eye views content displayed on the screen through the first and second lenses of the optical assembly, and the adjusting means changes the combined focal length of the optical assembly by adjusting the distance between the distances between the first and second lenses. The reason of myopia and hypermetropia is that parallel light's focus point does not fall on the retina, therefore this application has realized the regulation of lens number of degrees through the distance between adjustment first lens and the second lens, has improved the convenience that the user used the first equipment that shows of VR. The application also provides a lens degree determining method of the VR head display device, a lens degree determining device of the VR head display device, an electronic device and a storage medium, and the beneficial effects are achieved, and repeated description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a VR head display device according to an embodiment of the present disclosure;
FIG. 2 is a schematic combined focal length diagram of an optical assembly according to an embodiment of the present disclosure;
FIG. 3 is a graph illustrating a linear dependence between diopter and lens spacing provided by embodiments of the present application;
fig. 4 is a flowchart of a lens power determination method of a VR head display apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic view illustrating a connection relationship between a slide rheostat and a lens according to an embodiment of the present application;
FIG. 6 is a flowchart of a software implementation of myopia adjustment for a VR head mounted display device according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram illustrating an IPD Sensor moving from point B to point a according to an embodiment of the present application;
fig. 8 is a schematic diagram of an output voltage ratio of an IPD Sensor according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a VR head display device provided in an embodiment of the present application, where the VR head display device provided in this embodiment may include an optical assembly corresponding to a left eye, an optical assembly corresponding to a right eye, and a screen, and since the optical assemblies corresponding to the left eye and the right eye have the same structure, fig. 1 shows an optical assembly 110 and a screen 120 corresponding to a single eye, each of the optical assemblies 110 includes a first lens 111, a second lens 112, and an adjusting device 113, main optical axes of the first lens 111 and the second lens 112 are coincident, the adjusting device 113 is configured to change a combined focal length of the optical assemblies 110 by adjusting a distance between the first lens 111 and the second lens 112, and a user views an image displayed on the screen 120 through the optical assembly 110. The first lens and the second lens may be convex lenses or concave lenses.
As shown in fig. 1, the distance between the first lens and the screen is greater than the distance between the second lens and the screen; in other embodiments, the positions of the first and second lenses may be interchanged, i.e.: the distance between the second lens and the screen is larger than the distance between the first lens and the screen.
The adjusting device may be provided with a connecting structure for connecting the first lens and/or the second lens, and the distance between the first lens and the second lens is realized by changing the position of the connecting structure. As a possible embodiment, the above-mentioned adjusting device may be a sliding rheostat IPD sensor. The near-sighted and far-sighted adjusting function of the VR head display equipment can be realized through software driving, and a wearer can independently adjust the distance between every two lenses corresponding to two eyes according to the near-sighted degree of the wearer so as to achieve the optimal visual effect.
Specifically, the present embodiment may have the following schemes for adjusting the distance between the first lens and the second lens:
scheme 1: and a second connecting structure of the adjusting device is connected with a second lens, the first lens is fixed at a first target position of the VR head display equipment, and the adjusting device controls the second lens to move along a main optical axis.
Scheme 2: and a first connecting structure of an adjusting device is connected with the first lens, the second lens is fixed at a second target position of the VR head display equipment, and the adjusting device controls the first lens to move along a main optical axis.
Scheme 3: the first connecting structure of the adjusting device is connected with the first lens, the second connecting structure of the adjusting device is connected with the second lens, and the adjusting device controls the first lens and the second lens to move along the main optical axis.
The optical principle of the above embodiment that the VR head display apparatus can adjust the power of the lens is explained below, referring to fig. 2, fig. 2 is a schematic combined focal length diagram of an optical assembly according to an embodiment of the present application, where L1 denotes a first lens, L2 ' denotes a second lens before movement, L2 "denotes a second lens after movement, s ' denotes a distance between the second lens and the first lens before movement, s" denotes a distance between the second lens and the first lens before movement, FOV denotes an angle of view of an eye, a denotes an effective observation area before movement of the second lens, B denotes an effective observation area after movement of the second lens, VID L2 ' denotes a virtual image distance before movement of the second lens, VID L2 "denotes a virtual image distance after movement of the second lens, Δ s denotes a virtual image distance change length before and after movement of the second lens, and display denotes a screen.
The focal length of the first lens is f1, the focal length of the second lens is f2, and the combined focal length f of the first lens and the second lens is: f ═ f1 xf 2)/(f1+ f 2-s.
As shown in FIG. 2, the distance between the first lens and the second lens is changed by moving the second lens L2 back and forth, and the diopter of the combination of the first lens and the second lens is adjusted to make the image plane close to or far away from the human eye to achieve the effect of adjusting the myopia or the hyperopia.
The relationship between diopter D and focal length f is known as: d is 1/f.
The distance between the first lens and the second lens (i.e. the lens pitch) is s, and the relationship between diopter D and s can be obtained according to the relationship between diopter D and the focal length f and the combined focal length calculation formula as follows:
wherein 1D is 100 DEG, and the spectacle number DΔ＝D*100。
According to the relation between diopter D and s and the calculation formula of the eyeglass power, when the value of s is uniquely determined, the adjusted power D can be accurately determinedΔ。
The optical parameters of the lens shown in table 1 can be obtained through optical data statistics, and then the linear relation between the distance s and the diopter D is calculated.
TABLE 1 lens optical parameters
| D | VID | s | L2-Display | Total |
| 0.5 | 2000 | 7.552 | 1 | 8.552 |
| 1 | 1000 | 7.117 | 1.436 | 8.553 |
| 1.5 | 667 | 6.726 | 1.827 | 8.553 |
| 2 | 500 | 6.333 | 2.219 | 8.552 |
| 2.5 | 400 | 5.941 | 2.612 | 8.553 |
| 3 | 333 | 5.546 | 3.007 | 8.553 |
| 3.5 | 286 | 5.159 | 3.394 | 8.553 |
| 4 | 250 | 4.765 | 3.788 | 8.553 |
| 4.5 | 222 | 4.372 | 4.181 | 8.553 |
| 5 | 200 | 3.987 | 4.566 | 8.553 |
| 5.5 | 182 | 3.605 | 4.948 | 8.553 |
| 6 | 167 | 3.226 | 5.327 | 8.553 |
| 6.5 | 154 | 2.841 | 5.712 | 8.553 |
| 7 | 143 | 2.588 | 5.964 | 8.552 |
| 7.5 | 133 | 2.07 | 6.482 | 8.552 |
| 8 | 125 | 1.714 | 6.839 | 8.553 |
| 8.5 | 118 | 1.366 | 7.186 | 8.552 |
In table 1, D is diopter, VID is virtual image distance, s is distance between the first lens and the second lens, L2-Display is distance between the second lens and the screen, and Total is distance between L1 and the screen.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating a linear correlation between diopter and lens distance provided by an embodiment of the present application, where in fig. 3, the abscissa is diopter D, and the ordinate is a distance s between the first lens and the second lens, and the expression may be-07707D + 7.8744.
The VR head display device provided by this embodiment includes optical components corresponding to the left eye and the right eye, and each optical component includes a first lens, a second lens and an adjusting device. The user's single eye views content displayed on the screen through the first and second lenses of the optical assembly, and the adjusting means changes the combined focal length of the optical assembly by adjusting the distance between the distances between the first and second lenses. According to the embodiment, the method for modifying the focal length of the head display lens according to the glasses parameters of the user enables a myopic user to be matched with the view consistent with the own eyesight without wearing glasses. The reason for myopia and hypermetropia is that the focus point of parallel light does not fall on the retina, so this embodiment has realized the regulation of lens degree through the distance between adjustment first lens and the second lens, has improved the convenience that the user used the first equipment that shows of VR.
Referring now to fig. 4, fig. 4 is a flowchart of a lens power determining method of a VR head display apparatus according to an embodiment of the present disclosure, where the lens power determining method shown in fig. 4 can be applied to the VR head display apparatus described in the above embodiment, an adjusting device of the VR head display apparatus includes a sliding rheostat, and a resistance of an access circuit of the sliding rheostat changes when the adjusting device adjusts a distance between a first lens and a second lens, and the lens power determining method can include the following steps:
s401: acquiring a first corresponding relation between the lens spacing and the varistor voltage;
the lens space is a distance s between the first lens and the second lens, and the varistor voltage is a voltage V across a resistor of the sliding varistor access circuit. An optical assembly of a VR head display device includes a first lens, a second lens, and an adjustment device including a sliding rheostat. Referring to fig. 5, fig. 5 is a schematic diagram illustrating a connection relationship between a slide rheostat and a lens according to an embodiment of the present application, in which 111 is a first lens, 112 is a second lens, 120 is a screen, R1 is a slide rheostat, and R2 is another resistor. When the second lens moves, the size of the slide rheostat access circuit changes, and the voltage across the resistance of the slide rheostat access circuit also changes. In the example shown in fig. 5, if the second lens is moved to the left, the measurement value of the voltmeter becomes large; if the second lens moves to the right, the voltmeter measurement becomes smaller.
S402: acquiring a second corresponding relation between the lens distance and the lens power;
from the above table 1 and fig. 3, the lens spacing s and the lens power D can be determinedΔThe second correspondence relationship of (1).
S403: generating a corresponding relation between the rheostat voltage and the lens power according to the first corresponding relation and the second corresponding relation;
wherein, the corresponding relation between s and V, s and D are knownΔOn the basis of the corresponding relation, the rheostat voltage V and the lens degree D can be obtainedΔThe corresponding relationship of (1).
S404: and reading the current rheostat voltage of the sliding rheostat, and determining the current lens power corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens power.
The user can adjust the lens spacing by toggling the adjustment device, and the current varistor voltage V of the sliding varistor changes when the lens spacing changes, so that the current lens power can be determined according to the current varistor voltage V.
In the above embodiment, the correspondence between the varistor voltage and the lens power is determined according to the correspondence between the lens distance and the varistor voltage and the correspondence between the varistor voltage and the lens power, and when the user dials the adjustment device to adjust the lens power, the current lens power can be determined according to the current varistor voltage of the sliding varistor, so that the lens power of the VR headset can be accurately determined.
As a possible implementation, after determining the current lens power corresponding to the current rheostat voltage according to the corresponding relationship between the rheostat voltage and the lens power, the current lens power can be displayed on the screen of the VR head display device, so that the user can determine the current lens power adjustment condition.
In order to avoid frequent changes of the lens power displayed on the screen, after the current lens power corresponding to the current rheostat voltage is determined according to the corresponding relation between the rheostat voltage and the lens power, whether the difference between the current lens power and the currently displayed lens power on the screen is within a preset interval can be judged; if yes, the current lens power is not updated; and if not, updating the current lens power to a screen of the VR head display equipment. Further, the present embodiment may also update the current lens power according to a specific gradient.
As a feasible implementation manner, in the process that a user changes the distance between the lenses by dialing the adjusting device, if feedback information of the left eye power adjustment completion input by the user is received, the adjusting device corresponding to the left eye is locked so as to stop the lens power adjustment of the left eye; and if the feedback information of the adjusted right eye power input by the user is received, locking the adjusting device corresponding to the right eye so as to stop the adjustment of the right eye lens power. Furthermore, after the VR head display equipment is started, whether the adjusting devices corresponding to the left eye and the right eye are locked or not can be judged; if yes, continuing to play the target content; if not, the target content is paused to be played. Through the above mode, the playing can be paused when the lens power is adjusted, and the playing can be continued after the lens power is adjusted, so that the user experience is improved.
Referring to fig. 6, fig. 6 is a flowchart illustrating a software implementation of myopia adjustment of a VR head display apparatus according to an embodiment of the present disclosure. The following process can be realized in the driving of the VR head display device: reading a voltage value when the IPD sensor node is added to the driving equipment tree, and establishing a relation between a lens spacing s and the current rheostat voltage V according to actual operation data; lens spacing s and lens power D provided according to optical dataΔEstablishing a lens spacing s and a lens power DΔThe corresponding relationship of (a); establishing the current varistor voltage V and lens power DΔThe corresponding relationship of (1). The following operations can be implemented at the client: synchronizing lens power D in real time as lens spacing s changesΔDisplaying on the screen with a gradient of 25 degrees in real time with voltage change of IPD sensorAnd updating the current power of the lens.
Referring to fig. 7 and 8, fig. 7 is a schematic diagram illustrating an IPD Sensor moving from a point B to a point a according to an embodiment of the present application, fig. 8 is a schematic diagram illustrating an output voltage ratio of the IPD Sensor according to the embodiment of the present application, and an abscissa of the diagram in fig. 8 is a lens pitch s and an ordinate of the diagram is a voltage V. According to the IPD Sensor Spec provided by the manufacturer, the IPD Sensor moves from point B to the ideal Out Voltage Ratio at point A. The practical operation summary can establish the relationship between the moving distance s and the output voltage V. In summary, after the relationship between the output voltage and the adjustment degree is established, the voltage value obtained in the adjustment process is converted into the degree in real time, and the upper layer APP is obtained through jni (java Native interface) and displayed on the screen in real time, so that the wearer can watch the voltage value.
The demand that reaches the best result of use when this embodiment can satisfy the near-sighted crowd uses the first equipment that shows of VR, this scheme has following characteristics: a. myopic people can use without wearing glasses, and user adaptation to different myopic degrees is realized. The distance between Lens is adjusted by IPD sensor to achieve the purpose of adjusting myopia. b. Each IPD sensor can independently adjust the distance between Lens in the vertical direction, and the adjusting function of different degrees of the left eye and the right eye is realized. c. In the process of adjusting the degree by using the IPD sensor, the software system receives the voltage signal in real time, the myopia degree can be displayed on the screen, and a wearer can adjust the myopia degree according to the myopia degree.
An embodiment of the present application further provides an eyeglass power determining apparatus for a VR head display device, which may be applied to the VR head display device in the above embodiment, where an adjusting device of the VR head display device includes a sliding rheostat, and a resistance of an access circuit of the sliding rheostat changes when the adjusting device adjusts a distance between a first lens and a second lens, and the eyeglass power determining apparatus includes:
the first relation acquisition module is used for acquiring a first corresponding relation between the lens spacing and the varistor voltage; wherein the lens pitch is a distance between the first lens and the second lens, and the varistor voltage is a voltage across a resistor of the sliding varistor access circuit;
the second relation acquisition module is used for acquiring a second corresponding relation between the lens spacing and the lens power;
a third relationship obtaining module, configured to generate a corresponding relationship between the varistor voltage and the lens power according to the first corresponding relationship and the second corresponding relationship;
and the degree determining module is used for reading the current rheostat voltage of the sliding rheostat and determining the current lens degree corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens degree.
In the above embodiment, the correspondence between the varistor voltage and the lens power is determined according to the correspondence between the lens distance and the varistor voltage and the correspondence between the varistor voltage and the lens power, and when the user dials the adjustment device to adjust the lens power, the current lens power can be determined according to the current varistor voltage of the sliding varistor, so that the lens power of the VR headset can be accurately determined.
Further, the method also comprises the following steps:
the first display module is used for displaying the current lens power to a screen of the VR head display equipment after the current lens power corresponding to the current rheostat voltage is determined according to the corresponding relation between the rheostat voltage and the lens power.
Further, the method also comprises the following steps:
the second display module is used for judging whether the difference between the current lens power and the currently displayed lens power on the screen is within a preset interval or not after the current lens power corresponding to the current rheostat voltage is determined according to the corresponding relation between the rheostat voltage and the lens power; and if not, updating the current lens power to a screen of the VR head display equipment.
Further, the method also comprises the following steps:
the locking module is used for locking the adjusting device corresponding to the left eye if feedback information of the adjusted left eye degree input by a user is received; and the controller is also used for locking the adjusting device corresponding to the right eye if receiving the feedback information of the adjusted right eye degree input by the user.
Further, the method also comprises the following steps:
the content playing module is used for judging whether the adjusting devices corresponding to the left eye and the right eye are locked or not; if yes, continuing to play the target content; if not, the target content is paused to be played.
Since the embodiments of the apparatus portion and the method portion correspond to each other, please refer to the description of the embodiments of the method portion for the embodiments of the apparatus portion, which is not repeated here.
The present application also provides a storage medium having a computer program stored thereon, which when executed, may implement the steps provided by the above-described embodiments. The storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The application further provides an electronic device, which may include a memory and a processor, where the memory stores a computer program, and the processor may implement the steps provided by the foregoing embodiments when calling the computer program in the memory. Of course, the electronic device may also include various network interfaces, power supplies, and the like.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A VR head display device is characterized by comprising an optical component corresponding to a left eye, an optical component corresponding to a right eye and a screen;
wherein each optical assembly comprises a first lens, a second lens and an adjusting device, the main optical axes of the first lens and the second lens are coincident, and the adjusting device is used for changing the combined focal length of the optical assembly by adjusting the distance between the first lens and the second lens.
2. The VR head display device of claim 1, wherein a distance between the first lens and the screen is greater than a distance between the second lens and the screen;
correspondingly, the first lens is fixed at a first target position of the VR head display device, and the adjusting device controls the second lens to move along a main optical axis;
or, the second lens is fixed at a second target position of the VR head display equipment, and the adjusting device controls the first lens to move along the main optical axis;
or, the adjusting device controls the first lens and the second lens to move along the main optical axis.
3. An eyeglass power determination method for a VR head display device, applied to the VR head display device of claim 1 or 2, wherein an adjustment device of the VR head display device comprises a slide rheostat, and wherein a resistance of an access circuit of the slide rheostat changes when the adjustment device adjusts a distance between a first lens and a second lens, the eyeglass power determination method comprising:
acquiring a first corresponding relation between the lens spacing and the varistor voltage; wherein the lens pitch is a distance between the first lens and the second lens, and the varistor voltage is a voltage across a resistor of the sliding varistor access circuit;
acquiring a second corresponding relation between the lens distance and the lens power;
generating a corresponding relation between the rheostat voltage and the lens power according to the first corresponding relation and the second corresponding relation;
and reading the current rheostat voltage of the sliding rheostat, and determining the current lens power corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens power.
4. The method of claim 3, wherein after determining the current lens power corresponding to the current varistor voltage according to the relationship between the varistor voltage and the lens power, the method further comprises:
displaying the current lens power to a screen of the VR head display device.
5. The method of claim 3, wherein after determining the current lens power corresponding to the current varistor voltage according to the relationship between the varistor voltage and the lens power, the method further comprises:
judging whether the difference between the current lens power and the power of the currently displayed lens power on the screen is within a preset interval or not;
and if not, updating the current lens power to a screen of the VR head display equipment.
6. The method of determining lens power of a VR head mounted device of claim 3, further comprising:
if feedback information of the left eye degree which is input by a user and is adjusted is received, locking an adjusting device corresponding to the left eye;
and if the feedback information of the adjusted right eye degree input by the user is received, locking the adjusting device corresponding to the right eye.
7. The method of determining lens power of a VR head mounted device of claim 6, further comprising:
judging whether the adjusting devices corresponding to the left eye and the right eye are locked or not;
if yes, continuing to play the target content;
if not, the target content is paused to be played.
8. An eyeglass power determining apparatus of a VR head display device, applied to the VR head display device of claim 1 or 2, wherein an adjusting means of the VR head display device includes a slide rheostat, a resistance of a slide rheostat access circuit changes in magnitude when the adjusting means adjusts a distance between a first lens and a second lens, the eyeglass power determining apparatus comprising:
the first relation acquisition module is used for acquiring a first corresponding relation between the lens spacing and the varistor voltage; wherein the lens pitch is a distance between the first lens and the second lens, and the varistor voltage is a voltage across a resistor of the sliding varistor access circuit;
the second relation acquisition module is used for acquiring a second corresponding relation between the lens spacing and the lens power;
a third relationship obtaining module, configured to generate a corresponding relationship between the varistor voltage and the lens power according to the first corresponding relationship and the second corresponding relationship;
and the degree determining module is used for reading the current rheostat voltage of the sliding rheostat and determining the current lens degree corresponding to the current rheostat voltage according to the corresponding relation between the rheostat voltage and the lens degree.
9. An electronic device comprising a memory having a computer program stored therein and a processor that when invoked by the computer program in the memory performs the steps of a method for lens power determination for a VR head display device as claimed in any one of claims 3 to 7.
10. A storage medium having stored thereon computer-executable instructions that, when loaded and executed by a processor, perform the steps of a method for determining lens power of a VR head display device as claimed in any one of claims 3 to 7.
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