CN114280778A - Intelligent glasses and image distance adjusting method thereof - Google Patents
Intelligent glasses and image distance adjusting method thereof Download PDFInfo
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Abstract
The application provides intelligent glasses and an image distance adjusting method thereof, and the intelligent glasses comprise: the binocular display module comprises a binocular display module, a binocular module bracket, a visibility detection module, an image distance adjusting module, an image source module and a display control module, wherein the image distance adjusting module keeps the image source module above the binocular display module; the binocular display module is arranged on the binocular module support and forms a display system of the intelligent glasses with the image source module; the diopter detection module detects the diopter of a user wearing the intelligent glasses; the display control module obtains the system image distance of the display system, determines the system image distance adjustment quantity according to the user diopter and the system image distance, and controls the image distance adjustment module to adjust the distance between the image source module and the binocular display module according to the system image distance adjustment quantity until the system image distance adjustment quantity is within a preset range. Compared with the prior art, the intelligent glasses can achieve automatic and high-precision image distance adjustment according to diopters of different wearers, and wearing comfort is improved.
Description
Technical Field
The application relates to the technical field of intelligent equipment, in particular to intelligent glasses and an image distance adjusting method thereof.
Background
As AR technology matures, binocular stereoscopic display gradually becomes the mainstream display technology. Among them, the free-form optical solution is popular due to its better optical display effect.
At present, the image distance of an optical system is fixed in a binocular display module for realizing three-dimensional display based on a free-form surface technology, the image position is adjusted through software to change the mode of a binocular display parallax angle, the depth of a virtual image is changed, and the effect of three-dimensional display is achieved.
The stereoscopic display scheme violates the normal imaging principle of binocular vision, causes the conflict between binocular convergence and monocular adjustment, and makes a user wearing the smart glasses feel uncomfortable.
Disclosure of Invention
The application aims to provide intelligent glasses and an image distance adjusting method thereof, so that automatic and high-precision image distance adjustment of the intelligent glasses can be realized according to diopters of different wearers.
This application first aspect provides a smart glasses, includes:
the binocular display module comprises a binocular module, a binocular module bracket, a visibility detection module, an image distance adjusting module, an image source module and a display control module, wherein the image distance adjusting module keeps the image source module above the binocular display module; wherein the content of the first and second substances,
the binocular display module is arranged on the binocular module support and forms a display system of the intelligent glasses with the image source module;
the diopter detection module is used for detecting the diopter of a user wearing the intelligent glasses and sending the user diopter to the display control module;
the display control module is used for acquiring the system image distance of the display system, determining the system image distance adjustment quantity according to the user diopter and the system image distance, and controlling the image distance adjustment module to adjust the distance between the image source module and the binocular display module according to the system image distance adjustment quantity until the system image distance adjustment quantity is within a preset range.
In a possible implementation manner, in the above smart glasses provided in an embodiment of the present application, the image distance adjusting module includes:
the displacement sensor comprises a base, a micro displacement mechanism and a displacement sensor; wherein the content of the first and second substances,
the micro-displacement mechanism and the displacement sensor are arranged on the base, and the image source module is arranged on the micro-displacement mechanism;
the micro-displacement mechanism is used for converting the system image distance adjustment quantity into a target displacement distance between the image source module and the binocular display module according to the corresponding relation between the image distance and the object distance in the display system, and controlling the image source modules to mutually approach or leave the target displacement distance along the optical axis direction of the display system;
the displacement sensor is used for detecting the displacement of the image source module and sending the displacement data of the image source module to the display control module.
In one possible implementation manner, in the above smart glasses provided in the embodiments of the present application, the micro-displacement mechanism employs SMA micro-actuators.
In a possible implementation manner, in the above smart glasses provided in the embodiments of the present application, a driving stroke of the SMA microactuator is greater than or equal to 0.2 mm.
In a possible implementation manner, in the above smart glasses provided in the embodiments of the present application, the displacement sensor is a grating displacement sensor or a magnetic grating displacement sensor.
In a possible implementation manner, in the foregoing smart glasses provided in the embodiments of the present application, the resolution of the displacement sensor is greater than or equal to 0.005 mm.
In a possible implementation manner, in the above smart glasses provided in the embodiments of the present application, the visibility detection module employs an infrared eye movement tracking component.
In a possible implementation manner, in the above-mentioned intelligent glasses that this application embodiment provided, binocular display module is free-form surface binocular display module.
The second aspect of the present application provides an image distance adjusting method based on the smart glasses in the first aspect, including:
acquiring a user diopter and a system image distance of the display system;
determining a system image distance adjustment amount according to the user diopter and the system image distance;
and controlling the image distance adjusting module to adjust the distance between the image source module and the binocular display module according to the system image distance adjusting quantity until the system image distance adjusting quantity is within a preset range.
In a possible implementation manner, in the method for adjusting an image distance of smart glasses provided in the embodiment of the present application, the controlling, according to the system image distance adjustment amount, the image distance adjustment module to adjust a distance between the image source module and the binocular display module includes:
converting the system image distance adjustment quantity into a target displacement distance between the image source module and the binocular display module according to the corresponding relation between the image distance and the object distance in the display system;
and controlling the image source modules to mutually approach or depart from the target displacement distance along the optical axis direction of the display system.
The intelligent glasses comprise a binocular display module, a binocular module support, a visibility detection module, an image distance adjusting module, an image source module and a display control module, wherein the image distance adjusting module keeps the image source module above the binocular display module; the binocular display module is arranged on the binocular module support and forms a display system of the intelligent glasses with the image source module; the diopter detection module detects the diopter of a user wearing the intelligent glasses and sends the user diopter to the display control module; the display control module obtains the system image distance of the display system, determines the system image distance adjustment quantity according to the user diopter and the system image distance, and controls the image distance adjustment module to adjust the distance between the image source module and the binocular display module according to the system image distance adjustment quantity until the system image distance adjustment quantity is within a preset range. Compared with the prior art, the intelligent glasses can realize automatic and high-precision image distance adjustment according to diopters of different wearers, avoid the situation that the focus of a user is forced to change due to inconsistent positions of the focuses of the virtual image and the real image, realize high-precision superposition of the virtual image and the real image, and improve wearing comfort.
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Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 illustrates an expanded view of the structure of a pair of smart glasses provided by some embodiments of the present application;
fig. 2 is a schematic diagram illustrating an image distance adjusting process of the smart glasses of fig. 1.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.
The technical terms related to the embodiments of the present application are explained as follows:
SMA (shape memory alloys) compositions are high-strength nickel and titanium, which due to their heat-shrinking properties are provided as another possible microactuator and can meet the miniaturization requirements.
A micro-actuator: a micro-actuator that converts some form of energy into mechanical energy.
A grating displacement sensor: when two gratings with equal grating pitch are installed in parallel and the nicks of the two gratings have a small included angle, a plurality of light and shade alternate stripes appear on the gratings, and the stripes become moire stripes which are arranged along the direction almost perpendicular to the grating stripes. The moire fringe has the following three characteristics: 1. the displacement of the moire fringes is proportional to the displacement of the grating; 2. the moire fringes have the displacement amplification effect; 3. moire fringes have the effect of averaging out the grating errors. The photoelectric element can convert the light intensity change when the moire fringe moves into an electric signal, the signal can display the displacement in a digital form, the displacement is equal to the product of the pulse and the grid distance, and the measurement resolution is equal to the grid distance.
Magnetic grid displacement sensor: and a displacement sensor for measuring by using the magnetic action of the magnetic grid and the magnetic head.
Fig. 1 is an expanded schematic view illustrating a structure of smart glasses provided in some embodiments of the present application, please refer to fig. 1, the smart glasses include: binocular display module assembly 100, binocular module assembly support 200, degree of vision detection module 300, image distance adjustment module 400, image source module 500 and display control module (not shown), image distance adjustment module 400 will image source module 500 keeps the top of binocular display module assembly 100, image source module 500 with binocular display module assembly 100 can follow optical axis O and reciprocate.
The binocular display module 100 is disposed on the binocular module support 200, and forms a display system of the smart glasses with the image source module 500. Wherein, the image source module 500 includes left/right screen, left screen is used for showing left eye image source picture, right screen is used for showing right eye image source picture, the image source picture of left screen and right screen gets into from binocular display module assembly 100's lens cone 110, get into in the user's eye through the optical module among the binocular display module assembly 100, the distance between image source module 500 and the binocular display module assembly 100 is the object distance, the virtual image of image source module 500 and the distance between the binocular display module assembly 100 are the image distance, the relation between image distance and the object distance follows the gaussian imaging formula: 1/f is 1/u +1/v (f: focal length; u: object distance; v: image distance), therefore, the image distance can be adjusted by adjusting the object distance by utilizing the principle that the focal length of the optical system is constant and the image distance changes along with the change of the object distance.
In the embodiment of the present application, the binocular display module 100 is a free-form surface binocular display module, which includes a left/right eye display module, and the free-form surface optical module has a better optical display effect.
The diopter detection module 300 is configured to detect a diopter of a user wearing the smart glasses, and send the user diopter to the display control module, which is configured to control the image distance adjustment module 400.
Specifically, in the above-mentioned smart glasses that this application embodiment provided, the subassembly is tracked in the mobility of infrared ray eye can be adopted to the diopter detection module 300, and after the user wore smart glasses, the user eyeball can be tracked automatically to the subassembly is tracked in the mobility of infrared ray eye, and then automatic measurement obtains user's binocular diopter.
Specifically, this infrared ray eye moves and tracks subassembly includes left eye and tracks subassembly and right eye and track the subassembly, and left eye tracks subassembly and right eye and tracks the subassembly and all comprise an infrared camera and an infrared LED light filling lamp. As shown in fig. 1, the detection scan range of the left/right eye tracking assembly is S.
The image distance adjusting module 400 is used for adjusting the distance between the image source module 500 and the binocular display module 100 to adjust the object distance of the display system, so as to adjust the image distance of the system, and when the image distance of the system is matched with the diopter of the user, the virtual image and the real image seen by the user can be clearly displayed in an overlapping manner.
The display control module is used for obtaining the system image distance of the display system in the intelligent glasses, determining the system image distance adjustment amount according to the diopter of the user and the system image distance, and controlling the image distance adjustment module 400 to adjust the distance between the image source module 500 and the binocular display module 100 until the system image distance adjustment amount is within a preset range, wherein the preset range can be set according to the actual situation, for example, the preset range can be set to 0, namely the current system image distance does not need to be adjusted, and can also be set to a smaller error range, and the application is not limited.
Specifically, in the above smart glasses provided in the embodiment of the present application, as shown in fig. 1, the image distance adjusting module 400 may include: a base 410, a micro-displacement mechanism 420, and a displacement sensor (not shown).
It should be understood that although not shown in the drawings, the base 410 is fixed relative to the binocular display module 100, the micro-displacement mechanism 420 and the displacement sensor are disposed on the base 410, the image source module 500 is disposed on the micro-displacement mechanism 420, and the micro-displacement mechanism 420 can drive the image source module 500 to move up and down along the optical axis O to change the object distance of the display system.
The micro-displacement mechanism 410 and the displacement sensor 420 are disposed on the guide rail 430, and the left screen 510 and the right screen 520 of the image source module 500 are disposed at two ends of the micro-displacement mechanism 410, respectively.
The micro-displacement mechanism 420 is configured to convert the system image distance adjustment amount into a target displacement distance between the image source module and the binocular display module according to a corresponding relationship between an image distance and an object distance in the display system, and control the image source module 500 to approach or leave the target displacement distance along an optical axis O direction of the display system.
For example, if the target displacement distance is 0, it means that image distance adjustment is not necessary; if the target displacement distance is less than 0, controlling the image source module 500 to move the target displacement distance downwards along the optical axis O to reduce the object distance and increase the system image distance; if the target displacement distance is greater than 0, the image source module 500 is controlled to move the target displacement distance upwards along the optical axis O to increase the object distance and reduce the system image distance.
Consequently, the intelligent glasses that this application provided can adjust display system image distance according to different wearers' diopter, and focus position matches when making display system image distance wear with the user to reach the unity of vergence of both eyes and monocular regulation, improve and wear the comfort level.
The displacement sensor is used for detecting the displacement of the image source module 500. Specifically, when the displacement sensor detects that the displacement that image source module 500 and binocular display module 100 are close to each other or are far away from does not reach the target displacement distance, then the display control module continuously controls micro-displacement mechanism 420 to carry out image distance adjustment, until the displacement sensor detects that the displacement that image source module 500 and binocular display module 100 are close to each other or are far away from reaches the target displacement distance, it is thus clear that the intelligent glasses that this application provided can read displacement data through displacement sensor and carry out high accuracy displacement adjustment, thereby realize the closed-loop control of image source screen displacement.
In the above-mentioned intelligent glasses that this application embodiment provided, displacement sensor can adopt grating displacement sensor or magnetic grid displacement sensor, and resolution ratio more than or equal to 0.005mm, great resolution ratio has ensured the precision that displacement sensor detected to the high accuracy of image distance regulation has been ensured.
In the above-mentioned intelligent glasses that this application embodiment provided, little displacement mechanism 420 adopts SMA micro actuator, and the drive stroke is more than or equal to 0.2mm, and micro actuator is small, and the stroke is little, and whole module compact structure, occupation space is little.
According to other embodiments of the present application, the micro-displacement mechanism and the displacement sensor may be integrated on the glass substrate of the image source screen to further reduce the occupied space.
For convenience of understanding, the present application further provides an image distance adjusting process of the smart glasses after a user wears the smart glasses provided by the present application in practical application, as shown in fig. 2:
s101, user diopter detection: the diopter detection module is used for carrying out diopter detection on the user and sending the user diopter to the display control module;
s102, determining an image distance adjusting quantity: the display control module acquires a system image distance of the display system, calculates an image distance adjustment quantity according to the user diopter and the system image distance, and converts the image distance adjustment quantity into a target displacement distance between the imaging source module and the binocular display module;
s103, starting image distance adjustment: the display control module controls the SMA micro-actuator to start adjusting the distance between the image source module and the binocular display module according to the target displacement distance;
s104, starting displacement detection: the display control module controls the displacement sensor to detect the displacement of the image source module;
s105, the display control module judges whether the system image distance is matched with the user diopter; if yes, finishing the image distance adjustment; if not, jumping to the step S102 to continue the image distance adjustment.
The intelligent glasses provided by the application can read the displacement data of the image source screens on the two sides through the displacement sensor to perform high-precision object distance adjustment, so that closed-loop control of the displacement of the image source screens is realized.
The intelligent glasses comprise a binocular display module, a binocular module support, a visibility detection module, an image distance adjusting module, an image source module and a display control module, wherein the image distance adjusting module keeps the image source module above the binocular display module; the binocular display module is arranged on the binocular module support and forms a display system of the intelligent glasses with the image source module; the diopter detection module detects the diopter of a user wearing the intelligent glasses and sends the user diopter to the display control module; the display control module obtains the system image distance of the display system, determines the system image distance adjustment quantity according to the user diopter and the system image distance, and controls the image distance adjustment module to adjust the distance between the image source module and the binocular display module according to the system image distance adjustment quantity until the system image distance adjustment quantity is within a preset range. Compared with the prior art, the intelligent glasses can realize automatic and high-precision image distance adjustment according to diopters of different wearers, avoid the situation that the focus of a user is forced to change due to inconsistent positions of the focuses of the virtual image and the real image, realize high-precision superposition of the virtual image and the real image, and improve wearing comfort.
The embodiment of the application also provides an image distance adjusting method of the intelligent glasses, and the method is based on the intelligent glasses provided by the embodiment and comprises the following steps:
acquiring a user diopter and a system image distance of the display system;
determining a system image distance adjustment amount according to the user diopter and the system image distance;
and controlling the image distance adjusting module to adjust the distance between the image source module and the binocular display module according to the system image distance adjusting quantity until the system image distance adjusting quantity is within a preset range.
In the image distance adjusting method for the smart glasses provided in the embodiment of the present application, the controlling, according to the system image distance adjusting amount, the image distance adjusting module adjusts the distance between the image source module and the binocular display module, including:
converting the system image distance adjustment quantity into a target displacement distance between the image source module and the binocular display module according to the corresponding relation between the image distance and the object distance in the display system;
and controlling the image source modules to mutually approach or depart from the target displacement distance along the optical axis direction of the display system.
Compared with the prior art, the image distance adjusting method of the intelligent glasses can achieve automatic and high-precision image distance adjustment according to diopters of different wearers, achieves high-precision superposition of virtual images and real images, and improves wearing comfort.
It should be noted that:
in the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the present application may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the creation apparatus of a virtual machine according to embodiments of the present application. The present application may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present application may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A smart eyewear, comprising:
the binocular display module comprises a binocular module, a binocular module bracket, a visibility detection module, an image distance adjusting module, an image source module and a display control module, wherein the image distance adjusting module keeps the image source module above the binocular display module; wherein the content of the first and second substances,
the binocular display module is arranged on the binocular module support and forms a display system of the intelligent glasses with the image source module;
the diopter detection module is used for detecting the diopter of a user wearing the intelligent glasses and sending the user diopter to the display control module;
the display control module is used for acquiring the system image distance of the display system, determining the system image distance adjustment quantity according to the user diopter and the system image distance, and controlling the image distance adjustment module to adjust the distance between the image source module and the binocular display module according to the system image distance adjustment quantity until the system image distance adjustment quantity is within a preset range.
2. The smart eyewear of claim 1, wherein the image distance adjustment module comprises:
the displacement sensor comprises a base, a micro displacement mechanism and a displacement sensor; wherein the content of the first and second substances,
the micro-displacement mechanism and the displacement sensor are arranged on the base, and the image source module is arranged on the micro-displacement mechanism;
the micro-displacement mechanism is used for converting the system image distance adjustment quantity into a target displacement distance between the image source module and the binocular display module according to the corresponding relation between the image distance and the object distance in the display system, and controlling the image source modules to mutually approach or leave the target displacement distance along the optical axis direction of the display system;
the displacement sensor is used for detecting the displacement of the image source module and sending the displacement data of the image source module to the display control module.
3. The smart eyewear of claim 2, wherein the micro-displacement mechanism employs SMA micro-actuators.
4. The smart eyewear of claim 3, wherein the SMA microactuator has a drive stroke of 0.2mm or greater.
5. The smart glasses of claim 2, wherein the displacement sensor is a grating displacement sensor or a magnetic grating displacement sensor.
6. The smart eyewear of claim 5, wherein the displacement sensor has a resolution of 0.005mm or greater.
7. The smart eyewear of claim 1, wherein the visibility detection module employs an infrared eye tracking assembly.
8. The smart eyewear of claim 1, wherein the binocular display module is a free-form surface binocular display module.
9. An image distance adjusting method based on the intelligent glasses according to any one of claims 1 to 8, comprising the following steps:
acquiring a user diopter and a system image distance of the display system;
determining a system image distance adjustment amount according to the user diopter and the system image distance;
and controlling the image distance adjusting module to adjust the distance between the image source module and the binocular display module according to the system image distance adjusting quantity until the system image distance adjusting quantity is within a preset range.
10. The smart glasses of claim 9, wherein the controlling the image distance adjustment module according to the system image distance adjustment amount to adjust the distance between the image source module and the binocular display module comprises:
converting the system image distance adjustment quantity into a target displacement distance between the image source module and the binocular display module according to the corresponding relation between the image distance and the object distance in the display system;
and controlling the image source modules to mutually approach or depart from the target displacement distance along the optical axis direction of the display system.
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| CN202111406500.1A CN114280778A (en) | 2021-11-24 | 2021-11-24 | Intelligent glasses and image distance adjusting method thereof |
| PCT/CN2021/137650 WO2023092712A1 (en) | 2021-11-24 | 2021-12-14 | Smart glasses and image distance adjustment method therefor |
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| WO2023092712A1 (en) | 2023-06-01 |
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