CN113655588A - Adaptive lens expansion control method, device, equipment and storage medium - Google Patents
Adaptive lens expansion control method, device, equipment and storage medium Download PDFInfo
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- CN113655588A CN113655588A CN202110790758.XA CN202110790758A CN113655588A CN 113655588 A CN113655588 A CN 113655588A CN 202110790758 A CN202110790758 A CN 202110790758A CN 113655588 A CN113655588 A CN 113655588A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
Abstract
The invention relates to the field of optical technology and VR (virtual reality) equipment, and discloses a method, a device, equipment and a storage medium for controlling the expansion and contraction of a self-adaptive lens. A self-adaptive lens expansion control method is applied to head-mounted visual equipment and comprises the following steps: detecting an eyeball image of a user, and determining vision data v of the user according to the eyeball image; calculating a distance value h between the two optical lenses according to the vision data v; defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses; and controlling an automatic focusing assembly to drive the optical lens barrel to rotate. The lens can be adaptive to different users, the focal length is automatically adjusted to be suitable, the focusing is quicker and more accurate compared with a method for manually adjusting the distance between the lens and eyes, the picture is more clear, and the user experience is better.
Description
Technical Field
The present invention relates to the field of optical technologies, and in particular, to a method, an apparatus, a device, and a storage medium for adaptive lens zoom control.
Background
Virtual Reality (VR) glasses use a head-mounted display device to guide a user to create a sense of being in a Virtual environment. The display principle is that the image of the display screen is made into an erect and enlarged virtual image by using an optical component, the image generated by the display screen is enlarged to a far place for viewing, and human eyes see the virtual image similar to a large screen image.
However, when a user with myopia wears the VR glasses, the distance from the virtual image to the eyes is too large, so that the picture seen by the user with myopia becomes blurred, and the viewing experience of the user with myopia is greatly reduced. Therefore, a user with far vision needs to manually adjust the focal length when using a VR device, the focal length is a measure of the concentration or divergence of light in an optical system, and refers to the distance from the optical center of a lens to the focal point of the light concentration when parallel light is incident, and the object is imaged most clearly at this distance. Focusing refers to rotating the lens to maximize the resolution of the image at a certain distance. The existing myopia/hyperopia users are troublesome in using VR glasses, and the focusing accuracy is not high.
Disclosure of Invention
The invention mainly aims to realize the self-adaption to users with different eyesight, so that the users can clearly see the picture of a virtual image presented by the head-mounted visual equipment, and the automatic focusing is more accurate, reliable and rapid.
The invention provides a method for controlling the expansion and contraction of a self-adaptive lens, which is applied to head-mounted visual equipment and comprises the following steps:
detecting an eyeball image of a user, and determining vision data v of the user according to the eyeball image;
calculating a distance value h between the two optical lenses according to the vision data v;
defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses;
and controlling an automatic focusing assembly to drive the optical lens barrel to rotate.
Optionally, in a first implementation manner of the first aspect of the present invention, the detecting an eyeball image of a user, and determining the vision data v of the user according to the eyeball image includes:
playing a plurality of 3D virtual environment detection images, and collecting corresponding user eyeball images when a user watches different images;
and analyzing the visual angle, distance and definition of the image observed by human eyes according to the eyeball image to obtain vision data.
Optionally, in a second implementation manner of the first aspect of the present invention, the calculating, according to the vision data, a distance value between two corresponding optical lenses includes:
calculating the adjusted vision data v2 suitable for the user according to the vision data v 1;
calculating a distance value h1 between the two optical lenses corresponding to the vision data v1 according to the vision data v 1;
according to the adjusted vision data v2, a distance value h2 between the two optical lenses corresponding to the adjusted vision data v2 is calculated.
And each optical lens barrel rotates once, and the two optical lenses are relatively close to or far away from each other.
Optionally, in a third implementation manner of the first aspect of the present invention, the defining the rotation value x of the autofocus assembly according to the distance value h between two optical lenses includes:
defining the rotation value of the automatic focusing assembly according to the distance value h between the two optical lenses and the distance difference delta h between the initial distance h0 of the optical lenses;
the automatic focusing assembly comprises a worm and a stepping motor driving the worm to rotate, and the automatic focusing assembly rotates a numerical value x to be the numerical value x rotated by the stepping motor.
Optionally, in a fourth implementation manner of the first aspect of the present invention, the initial distance h0 between the two optical lenses is the minimum distance between the two optical lenses.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the defining the autofocus assembly rotation value x according to the distance difference Δ h between the distance value h between two optical lenses and the initial optical lens distance h0 includes:
defining the rotation value x1 of the stepping motor according to the distance difference delta h1 between the distance value h1 between the two optical lenses corresponding to the vision data v1 and the initial distance h0 of the optical lenses;
and defining the stepping motor rotation value x2 according to a distance value delta h2 between a distance value h2 between two optical lenses and an initial optical lens distance h0 of the corresponding adjusted vision data v 2.
Finding out the variation difference Deltax between the stepping motor rotation value x1 corresponding to vision data and the stepping motor rotation value x2 for adjusting vision data (x2-x1)
Optionally, in a sixth implementation manner of the first aspect of the present invention, the plurality of optical barrels include an outer optical barrel and an inner optical barrel, the outer optical barrel includes an internal thread and a transmission tooth, and the inner optical barrel includes an external thread; the internal thread is matched and connected with the external thread, and the transmission gear is meshed with the worm.
A second aspect of the present invention provides an adaptive lens expansion and contraction control apparatus, including: the detection module is used for detecting an eyeball image of a user and determining vision data v of the user according to the eyeball image; the calculation module is used for calculating a distance value h between the two optical lenses according to the vision data v; the defining module is used for defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses; and the control module is used for controlling the automatic focusing assembly to drive the optical lens barrel to rotate according to the rotation numerical value x.
A third aspect of the present invention provides a wearable visual device comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the head-mounted visual apparatus to control lens extension and retraction through any one of the adaptive lens extension and retraction control devices described above.
A fourth aspect of the present invention provides a computer-readable storage medium having instructions stored therein, which when executed by a processor, implement the adaptive lens scaling control method of any one of the above.
In the technical scheme provided by the invention, the optical lens is stretched through the vision data of human eyes by an automatic focusing mechanism, so that the focal length of the optical lens is adaptive to different human eye visual distances; and the automatic focusing method calculates the vision data and the corresponding vision adjusting variable quantity, and obtains a focusing value more accurately relative to a rated value, thereby better adapting to the vision of different users and improving the user experience.
Drawings
FIG. 1 is a flowchart illustrating steps of an embodiment of a method for adaptive zoom lens control according to the present invention;
FIG. 2 is a flowchart illustrating another step of an embodiment of a method for adaptive zoom lens control according to the present invention;
FIG. 3 is a flowchart illustrating another step of an embodiment of a method for controlling an adaptive zoom lens according to the present invention;
FIG. 4 is a flowchart illustrating a further step of an embodiment of a method for adaptive zoom lens control according to the present invention;
FIG. 5 is a schematic structural diagram of an adaptive zoom lens according to an embodiment of the present disclosure;
FIG. 6 is a schematic diagram of an embodiment of an adaptive zoom lens control apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an embodiment of a head-mounted visual device in an embodiment of the present invention.
100, a self-adaptive telescopic lens; 200. an optical barrel; 210. an inner optical barrel; 230. optical lens, 211, external thread; 220. an outer optical barrel; 221. an internal thread; 222. a transmission tooth; 300. an autofocus assembly; 310. a worm; 320. a stepping motor; 400. a self-adaptive telescopic lens control device; 410. a detection module; 420. a calculation module; 430. a definition module; 440. a control module; 500. a head-mounted visual device; 510. a processor; 520. a memory; 530. a storage medium; 531. an operating system; 532. data; 540. a power source; 550. a wired or wireless network interface; 560. and an input/output interface.
Detailed Description
The embodiment of the invention provides a method, a device, equipment and a storage medium for controlling a self-adaptive telescopic lens, which can be automatically adapted to different users with various eyesight, enhance the use feeling of the users and protect eyes more clearly when watching pictures.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of understanding, a detailed flow of an embodiment of the present invention is described below, and referring to fig. 1, an embodiment of an adaptive zoom lens control method according to an embodiment of the present invention includes:
s10, detecting an eyeball image of a user, and determining vision data v of the user according to the eyeball image;
it is to be understood that the executing subject of the present invention may be a control device, and may also be a terminal or a server, which is not limited herein. The embodiment of the present invention is described by taking a server as an execution subject.
S20, calculating a distance value h between the two optical lenses according to the vision data v;
s30, defining a rotation numerical value x of the automatic focusing assembly according to the distance value h between the two optical lenses;
and S40, controlling the automatic focusing assembly to drive the optical lens barrel to rotate.
In the embodiment of the invention, the self-adaptive telescopic lens control method is applied to virtual reality interaction equipment, in particular to head-mounted visual equipment, and the head-mounted visual equipment comprises a stepping motor, at least two optical lens barrels and at least two optical lenses; the stepping motor is used for driving the optical lens barrel to rotate; the two optical lenses are respectively arranged on two different optical lens barrels; the distance between the optical lenses can be adjusted along with the rotation of the optical lens barrel. According to the self-adaptive telescopic lens control method, eyeball images are acquired after a user wears the equipment, the distance value between optical lenses to be adjusted is calculated through the eyeball images of the user, so that the rotation numerical value of the automatic focusing assembly is obtained, and the control terminal receives the obtained rotation numerical value to control the automatic focusing assembly to perform focusing.
Referring to fig. 2, in the adaptive zoom lens control method according to the embodiment of the present invention, "S10, the detecting an eye image of a user and determining the vision data v of the user according to the eye image" includes:
s11, playing a plurality of 3D virtual environment detection images, and collecting corresponding user eyeball images when a user watches different images;
and S12, analyzing the visual angle, distance and definition of the human eye observation image according to the eyeball image to obtain vision data.
The 3D virtual environment detection image can be a vision measurement image containing a sighting target, and vision data are obtained by obtaining the sight coordinates of eyeballs of the user in the current vision measurement image through the response time length and the result of the user and an eyeball tracking algorithm; or the distance between the eyepoint and the picture target object is acquired by the target image for detection, or the vision data is acquired by tracking the eyepoint motion track by the dynamic picture. The eyeball image of the user is collected into a left eye and a right eye, and the left eye and the right eye can be collected and recorded in the head-wearing visual equipment at the same time.
Further, referring to fig. 3, S20, the calculating a distance value between two corresponding optical lenses according to the vision data includes:
s21, calculating the adjusted vision data v2 adapting to the user according to the vision data v 1;
s22, calculating a distance value h1 between the two optical lenses corresponding to the vision data v1 according to the vision data v 1;
and S23, calculating a distance value h between the two optical lenses corresponding to the adjusted vision data v2 according to the adjusted vision data v 2.
Calculating to obtain vision data to be adjusted according to the vision data acquired in the step S11; and the distance values between the optical lenses comprise a distance value h1 between the optical lenses corresponding to the vision data v1 and a distance value h2 between the optical lenses corresponding to the adjusted vision data v 2; the distance value h0 between the optical lenses is the shortest distance between the optical lenses, and the distance between the two optical lenses is shortened or lengthened by 0.7mm every time the optical lens barrel rotates one circle. The relationship between the physical distance h and vision v of the two optical lenses is v ═ f (h), which is obtained by the design of the optical lenses and will not be described here.
Further, referring to fig. 4, S30, the step of defining the auto-focusing assembly rotation value x according to the distance value h between two optical lenses comprises:
and S31, defining the rotation value of the automatic focusing assembly according to the distance difference delta h between the distance value h between the two optical lenses and the initial distance h0 of the optical lenses.
Specifically, the step S31 of defining the rotation value of the auto-focusing assembly according to the distance difference Δ h between the distance value h between the two optical lenses and the initial distance h0 of the optical lenses includes:
s311, defining a stepping motor rotation value x1 according to a distance difference delta h1 between a distance value h1 between the two optical lenses corresponding to vision data v1 and an initial distance h0 of the optical lenses;
s312, defining a rotation value x2 of the stepping motor according to a distance value delta h2 between a distance value h2 between the two optical lenses and an initial distance h0 of the corresponding vision adjusting data v 2.
S313, the difference Δ x between the stepping motor rotation value x1 corresponding to the visual acuity data and the stepping motor rotation value x2 for adjusting the visual acuity data is determined as (x2-x 1).
As shown in fig. 5, the autofocus assembly 300 includes a worm 310, and a stepping motor 320 for driving the worm 310 to rotate, where x is the rotation value of the stepping motor 320 in the autofocus assembly 300; the initial stepper motor rotation value x (0) is 1/5 rotations of the stepper motor. The plurality of optical barrels 200 include an outer optical barrel 220 and an inner optical barrel 210, the outer optical barrel 220 includes an internal thread 221 and a driving tooth 222, and the inner optical barrel 210 includes an external thread 211; the internal thread 221 is connected with the external thread 211 in a matching way, and the transmission gear 222 is meshed with the worm 310; the number of the transmission teeth 222 is 127; when the stepping motor 320 rotates for one circle, the worm 310 walks 3 gear teeth 222, the outer optical lens barrel 220 rotates along with the worm 310 walking gear teeth, the inner optical lens barrel 210 rotates along with the outer optical lens barrel 220, and the inner optical lens barrel 220 extends and retracts through threads; the two optical lenses 400 are disposed in the lens barrel 200, and the distance between the two optical lenses 400 is adjusted as the lens barrel 200 rotates.
Therefore, in step S311, the stepper motor value x1 corresponding to the user 'S own vision data is x1 ═ ((127 × 5/3)/0.7))/(h1-h0), and in step S312, the stepper motor value x2 corresponding to the user' S own vision data is adjusted to x2 ═ ((127 × 5/3)/0.7)/(h2-h 0); then, by obtaining the variable difference Δ x between the values of the stepping motor obtained in x2 obtained in S312 and x1 obtained in S311 (x2-x1), the optical lens barrel extension value is adjusted by the variable difference Δ x between the values of the stepping motor, and the optical lens is adjusted to an appropriate focal length.
In the embodiment of the invention, the vision data to be adjusted is obtained correspondingly according to the vision data of the user, so that the rotation data of the stepping motor for driving the optical lens barrel to stretch and retract when the focal length is adjusted is obtained, and the automatic focusing method is characterized in that the vision data and the corresponding vision adjustment variable quantity are calculated, so that the focusing value obtained relative to the rated value is more accurate, the vision of different users is better adapted, the user experience is improved, and the displayed picture sense is better.
With reference to fig. 6, the adaptive optical lens barrel extension control apparatus 400 according to an embodiment of the present invention is used to execute any one of the adaptive lens extension control methods described above, where the adaptive lens extension control method according to an embodiment of the present invention is described above, and the adaptive lens extension control apparatus 400 according to an embodiment of the present invention is described below:
the detection module 410 is configured to detect an eyeball image of a user, and determine eyesight data v of the user according to the eyeball image;
a calculating module 420, configured to calculate a distance value h between two optical lenses according to the vision data v;
a defining module 430, configured to define a rotation value x of the auto-focusing assembly according to a distance value h between two optical lenses;
and a control module 440, configured to control the autofocus assembly to drive the optical barrel to rotate according to the rotation value x.
In the embodiment of the present invention, the detection module 410 and the processing module 420 are connected to the control module, and the detection module 410 may be an infrared sensor, a micro camera or other devices capable of detecting eye data from human eyes to pictures. The processing module 420 may be a processor, a central processing unit, a digital signal processor, or other circuit integration capable of editing an execution program. When the user starts the head-mounted visual device according to the embodiment of the present invention, the control module 430 controls the detection module 410 to detect the eyesight data of the user, the detection module 410 transmits the obtained eyesight data to the calculation module 420, the calculation module 420 receives the eyesight data and compares the eyesight data with the reference to obtain the corresponding adjusted eyesight data, and according to the distance value between two optical lenses of vision data, the definition module 430 receives the vision data given by the calculation module 420 and the distance value between the optical lenses 230 for adjusting the vision data, obtains the numerical value of the automatic focusing assembly required to drive the stepping motor to rotate and transmits the obtained electric rotation numerical value to the control module 430, and the control module 430 controls the stepping motor 320 to rotate according to the rotation numerical value of the automatic focusing assembly output by the definition module 430 and transmits a focusing signal to drive the optical lens barrel 200 to rotate, thereby achieving automatic focusing.
Optionally, in this embodiment, the control module 430 may also be specifically configured to play animation, video, teaching materials and the like required by the 3D virtual environment detection image or other users by using the head-mounted visual device.
Fig. 6 describes the adaptive lens control apparatus in the embodiment of the present invention in detail from the perspective of a modular functional entity, and the following describes the head-mounted visual device in the embodiment of the present invention in detail from the perspective of hardware processing.
Fig. 7 is a schematic structural diagram of a head-mounted visual device 500 including an adaptive zoom lens device, which may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 510 (e.g., one or more processors) and a memory 520, and one or more storage media 530 (e.g., one or more mass storage devices) storing an application 533 or data 532 according to an embodiment of the present invention. Memory 520 and storage media 530 may be, among other things, transient or persistent storage. The program stored on the storage medium 530 may include one or more modules (not shown), each of which may include a sequence of instruction operations for the head-mounted visual apparatus 500. Still further, the processor 510 may be configured to communicate with the storage medium 530 to execute a series of instruction operations in the storage medium 530 on the head-mounted visual device 500.
The head-mounted visual device 500 may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input-output interfaces 560, and/or one or more operating systems 531, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, and the like. Those skilled in the art will appreciate that the configuration of the head mounted visualization device shown in fig. 5 does not constitute a limitation of the head mounted visualization device and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
The present invention further provides a head-mounted visual device, where the head-mounted visual device 500 includes a memory 520 and a processor 510, where the memory 520 stores computer-readable instructions, and the computer-readable instructions, when executed by the processor 510, cause the processor 510 to perform the steps of the adaptive zoom lens control method in the foregoing embodiments.
The present invention further provides a computer-readable storage medium 530, where the computer-readable storage medium 530 may be a non-volatile computer-readable storage medium, and the computer-readable storage medium 530 may also be a volatile computer-readable storage medium, where instructions are stored in the computer-readable storage medium 530, and when the instructions are executed on a computer, the instructions cause the computer to execute the steps of the adaptive telescopic lens control method.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: 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 above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A self-adaptive lens expansion control method is applied to head-mounted visual equipment and is characterized in that the head-mounted visual equipment comprises a stepping motor, at least two optical lens barrels and at least two optical lenses; the stepping motor is used for driving the optical lens barrel to rotate; the two optical lenses are respectively arranged on two different optical lens barrels; the distance between the two optical lenses can be adjusted along with the rotation of the optical lens barrel; the adaptive lens expansion and contraction control method comprises the following steps:
detecting an eyeball image of a user, and determining vision data v of the user according to the eyeball image;
calculating a distance value h between the two optical lenses according to the vision data v;
defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses;
and controlling the automatic focusing assembly to drive the optical lens barrel to rotate according to the rotation numerical value x.
2. The adaptive lens extension control method according to claim 1, wherein the detecting an eye image of a user, and the determining the vision data v of the user from the eye image comprises:
playing a plurality of 3D virtual environment detection images, and collecting corresponding user eyeball images when a user watches different images;
and analyzing the visual angle, distance and definition of the image observed by human eyes according to the eyeball image to obtain vision data.
3. The adaptive lens expansion control method of claim 1, wherein the calculating a distance value between two corresponding optical lenses according to the vision data comprises:
calculating the adjusted vision data v2 suitable for the user according to the vision data v 1;
calculating a distance value h1 between the two optical lenses corresponding to the vision data v1 according to the vision data v 1;
calculating a distance value h between the two optical lenses corresponding to the adjusted vision data v2 according to the adjusted vision data v 2;
and each optical lens barrel rotates once, and the two optical lenses are relatively close to or far away from each other.
4. The adaptive lens expansion control method according to claim 2, wherein the defining the rotation value x of the autofocus assembly according to the distance value h between the two optical lenses comprises:
defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses and a distance difference delta h between the initial distance h0 of the two optical lenses;
the automatic focusing assembly comprises a worm and a stepping motor for driving the worm to rotate, and the rotation value x of the automatic focusing assembly is the rotation value x of the stepping motor.
5. The adaptive lens expansion control method according to claim 3, wherein the initial distance h0 between the two optical lenses is the minimum distance between the two optical lenses.
6. The adaptive lens expansion control method of claim 4, wherein the defining the autofocus-assembly rotation value x according to the distance value h between the two optical lenses and the distance difference Δ h between the initial distance h0 of the two optical lenses comprises:
defining the rotation value x1 of the stepping motor according to the distance difference delta h1 between the distance value h1 between the two optical lenses corresponding to the vision data v1 and the initial distance h0 of the optical lenses;
defining the stepping motor rotation value x2 according to a distance value delta h2 between a distance value h2 between two optical lenses and an initial optical lens distance h0 of corresponding adjusted vision data v 2;
the variation difference Δ x between the stepping motor rotation value x1 corresponding to the vision data and the stepping motor rotation value x2 for adjusting the vision data is determined as (x2-x 1).
7. The adaptive lens barrel extension control method according to claim 3, wherein the plurality of optical barrels include an outer optical barrel including an internal thread and a driving tooth and an inner optical barrel including an external thread; the internal thread is matched and connected with the external thread, and the transmission gear is meshed with the worm.
8. An adaptive lens expansion control device, characterized in that the adaptive lens expansion control device comprises:
the detection module is used for detecting an eyeball image of a user and determining vision data v of the user according to the eyeball image;
the calculation module is used for calculating a distance value h between the two optical lenses according to the vision data v;
the defining module is used for defining a rotation numerical value x of the automatic focusing assembly according to a distance value h between the two optical lenses;
and the control module is used for controlling the automatic focusing assembly to drive the optical lens barrel to rotate according to the rotation numerical value x.
9. A head-mounted visual device, the head-mounted visual device comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the head mounted visual device to perform the adaptive lens zoom control method of any of claims 1-7.
10. A computer-readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor, implement the adaptive lens scaling control method according to any of claims 1-7.
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