CN109116565B

CN109116565B - Head-mounted display equipment

Info

Publication number: CN109116565B
Application number: CN201811015069.6A
Authority: CN
Inventors: 韩夺
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2018-08-31
Filing date: 2018-08-31
Publication date: 2021-07-09
Anticipated expiration: 2038-08-31
Also published as: CN109116565A

Abstract

The invention relates to a head-mounted display device which comprises a device main body, a sliding assembly and a head band, wherein the device main body is connected with the head band through the sliding assembly, the sliding assembly comprises a driving mechanism and a sliding arm, the driving mechanism and the sliding arm are respectively and fixedly connected with the device main body and the head band, the driving mechanism comprises a power part and a worm, the power part can drive the worm to rotate in the circumferential direction, a nut matched with the worm is arranged on the sliding arm, the nut is meshed with the worm and connected, and when the worm rotates in the circumferential direction, the device main body and the head band are close to or far away from each other. One technical effect of the invention is that the head-mounted display device can adjust the distance from the eyes to the lens.

Description

Head-mounted display equipment

Technical Field

The invention relates to the technical field of electronic products, in particular to a head-mounted display device.

Background

The head-mounted display equipment, also called video glasses, eye type displays and portable cinemas, can realize the playing of multimedia files, including 3D videos and the like, realizes the immersive cinema effect by utilizing the near-eye display technology, and commercializes the concept of portable home cinemas. The user sends optical signal to eyes through wearing various head-mounted display equipment, can realize different effects such as Virtual Reality (VR), Augmented Reality (AR), Mixed Reality (MR).

In the prior art, due to the difference of individual eyesight of users, the requirement of each user for the distance from the eyes to the lenses is different, and the imaging effect and the use experience felt by the user are directly influenced. For products that cannot adjust the distance from the eyes to the lenses, the fixed distance from the eyes to the lenses cannot meet the requirements of some users on viewing image quality due to individual differences of the users.

Disclosure of Invention

An object of the present invention is to provide a new technical solution of a head-mounted display device.

According to one aspect of the invention, a head-mounted display device is provided, which comprises a device main body, a sliding assembly and a head band, wherein the device main body is connected with the head band through the sliding assembly, the sliding assembly comprises a driving mechanism and a sliding arm, the driving mechanism and the sliding arm are respectively and fixedly connected with the device main body and the head band, the driving mechanism comprises a power part and a worm, the power part can drive the worm to rotate circumferentially, a nut matched with the worm is arranged on the sliding arm, the nut is meshed with the worm and connected with the worm, and when the worm rotates circumferentially, the device main body and the head band are close to or far away from each other.

Optionally, the driving mechanism and the slide arm are respectively located on a center line of the device body and the headband, and the sliding direction is parallel to the center line.

Optionally, two sets of lenses are arranged on the device main body, the lenses face the headband direction, the two sets of lenses are symmetrically arranged, a gap is formed between the two sets of lenses, and the driving mechanism or the sliding arm is arranged in the gap.

Optionally, an extension arm extending towards the main body of the device is arranged on the head band, and the sliding arm is fixedly arranged on the extension arm and fixedly connected with the head band.

Optionally, the device main body has a housing, the driving mechanism is fixedly disposed in the housing, the slider is disposed on the head band, and the slider is inserted into the housing and connected to the driving mechanism.

Optionally, the driving mechanism further includes a slide rail, and the slide arm is disposed on and slides along the slide rail.

Optionally, the slide rail has two opposite side walls, two sides of the slide arm are respectively connected with the two side walls of the slide rail in a sliding manner, and the worm is fixedly disposed between the two side walls of the slide rail.

Optionally, the device further comprises a detection component arranged in the device main body, the detection component is configured to be used for detecting the eye information of the user, and the detection component is electrically connected with the power component.

Optionally, the detection assembly comprises an eye tracking system.

Optionally, the mobile terminal further comprises an equipment main board, the equipment main board is arranged in the equipment main body, and the detection component and the sliding component are electrically connected with the equipment main board respectively.

One technical effect of the invention is that the head-mounted display device can adjust the distance from the eyes to the lens.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded schematic view of some embodiments of the structure.

Figure 2 is an exploded view of the structure of the sliding assembly in some embodiments.

In the figure: the device comprises a device body 1, a detection port 11, a sliding assembly 2, a sliding arm 21, a driving mechanism 22, a power part 23, a worm 24, a nut 25, a sliding rail 26, a screw 27, a detection assembly 3, a lens 31, a head band 4, an extension arm 41, an adjusting mechanism 42 and a device main board 5.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

A head-mounted display device is provided that, in some embodiments, as shown in fig. 1 and 2, includes a device body 1, a sliding assembly 2, and a headband 4.

The device body 1 is provided with optical components such as lenses, and a user can view information displayed by the device body 1 through the lenses. The main body 1 and the headband 4 are connected through the sliding component 2, and when the user uses the invention, the user wears the equipment on the head through the headband 4, so that the lens on the main body 1 is opposite to the eyes of the user, and the user can watch the equipment.

The sliding assembly 2 comprises a drive mechanism 22 and a slide arm 21 that can be connected. The driving mechanism 22 and the slide arm 21 are fixedly connected with the device main body 1 and the headband 4 respectively, that is, the driving mechanism 22 is fixedly connected with the device main body 1, and the slide arm 21 is fixedly connected with the headband 4; alternatively, the driving mechanism 22 is fixedly connected to the headband 4, and the slider 21 is fixedly connected to the device body 1. This is not limited by the present application. The apparatus main body 1 and the headband 4 are connected by the connection of the driving mechanism 22 and the slider 21.

The drive mechanism 22 includes a power member 23 and a worm 24. The power member 23 is typically an electric motor. The power part 23 is connected with the worm 24, and the power part 23 can drive the worm 24 to rotate circumferentially. The nut 25 is engaged with the worm 24, and the nut 25 is driven to move along the axial direction of the worm 24 by the circumferential rotation of the worm 24, that is, the forward rotation or the reverse rotation of the worm 24, so as to drive the movement of the slide arm 21 and the headband 4 fixedly connected with the slide arm 21, wherein the movement is opposite, or the worm 24 drives the device main body 1 fixedly connected with the driving mechanism 22 to move relative to the nut 25. The driving mechanism 22 and the slide arm 21 are fixedly connected with the device main body 1 and the headband 4, respectively, and the device main body 1 and the headband 4 can be moved close to or away from each other by the circumferential rotation of the worm 24.

The adjustment of the distance from the human eyes to the lenses can be realized by adjusting the distance between the device main body 1 and the headband 4. The driving relationship of the meshing connection enables the power piece 23, the worm 24 and the slide arm 21 to be kept fixed relative to the device main body 1 or the arrangement position of the headband 4 after installation, so that a stable connection relationship can be kept, and other components in the device main body 1 can also be kept in a stable fixed connection relationship with the device main body 1. Compared with the equipment which adjusts the distance between the eyes and the lens by moving the lens in the equipment main body 1, the matching precision of the optical components such as the lens is high, the error is easily increased by frequent movement, the probability of failure of the optical components is increased, the reliability of the equipment is reduced, and the user experience is influenced; on the other hand, the mechanism for moving the lens or the lens needs to be disassembled and adapted integrally to the optical components in the apparatus main body 1 after being damaged, so that the maintenance is difficult and the maintenance cost is high. In the invention, each component in the device main body 1 can keep a fixed relation with the device main body 1, and the device main body 1 moves relative to the headband 4 as a whole, so that the position relation among optical elements in the optical component is always kept fixed, and the reliability of the head-mounted display device can be kept while the distance from human eyes to a lens can be adjusted; even if the sliding assembly breaks down, the maintenance and replacement work can be completed only by detaching the mounting area of the sliding assembly, the precise optical assembly part is not required to be detached, and the assembly reliability inside the device main body 1 is ensured. And this application need not reserve the removal space for the removal of lens in equipment main part 1 is inside, only need with the lens install in equipment main part 1 can, be favorable to saving the inner space for the structure can be compacter, and to this kind of electronic equipment who directly wears the use of head-mounted display device, help its miniaturization, promote user experience.

In some embodiments, as shown in fig. 1, the driving mechanism 22 and the slide arm 21 are respectively located on a center line of the device body 1 and the headband 4, and the sliding direction is parallel to the center line, so that a section where the center line is located after the device body 1 and the headband 4 are connected coincides; further, the sliding acting force applied to the device main body 1 and the headband 4 during relative sliding acts on the central lines thereof, and the direction of the sliding acting force is parallel to the central lines, so that the device main body 1 and the headband 4 are stressed in a balanced manner during sliding; further, when the device main body 1 and the headband 4 slide, the distance between the two eyes and the corresponding two lenses moves the same.

In some embodiments, two sets of lenses are provided on the device body 1. The lenses are oriented in the direction of the headband 4, and are opposed to the user's eyeglasses when worn and used by the user. The two groups of lenses are symmetrically arranged and positioned on two sides of the central line. There is a gap between the two groups of lenses, in general, the lenses are circular, and when the two circular lenses are placed side by side symmetrically, a common horizontal tangent line of the two circular lenses and the two circular lenses enclose a space, that is, the gap, of course, in other embodiments, the lenses may not be circular, which is not limited in this application. The space of the gap is usually hollow in the device body 1 or is used as a channel for wiring, the utilization rate is extremely low, and the driving mechanism 22 or the sliding arm 21 is arranged in the gap, so that the sliding assembly 2 in the application can effectively utilize the structural gap in the device body 1, the space utilization rate is improved, and the appearance volume of the device body 1 is reduced or even not influenced when the sliding assembly 2 is arranged.

In some embodiments, as shown in fig. 1, the headband 4 is provided with an extension arm 41 extending towards the main body 1 of the device, and the sliding arm 21 is fixedly arranged on the extension arm 41 and fixedly connected with the headband 4, so as to provide a stable support for the sliding arm 41. Further, the slide arm 21 may also be directly fixed to the headband 4, or may be integrally formed with the main body structure of the headband 4, which is not limited in the present application.

In some embodiments, as shown in fig. 1, the apparatus body 1 has a housing, and the drive mechanism 22 is fixedly disposed within the housing. The slider arm 21 is provided on the headband 4. When the slider arm 21 is connected to the apparatus body 1, it can be directly inserted into the housing and connected to the drive mechanism 22, and the appearance of the apparatus body 1 can be maintained. The sliding assembly 2 can be effectively protected by the housing, and external damage, such as foreign matter entering the worm 24 and obstructing the movement of the nut 25, can be prevented.

In some embodiments, as shown in fig. 1 and 2, the driving mechanism 22 includes a slide rail 26, and the slide arm 21 is disposed on the slide rail 26 and slides along the slide rail 26. The slide rail 26 has guiding, restraining and supporting functions for the slide arm 21.

In some embodiments, as shown in fig. 1, the slide rail 26 has two opposite side walls, and the slide rail 26 may be a hollow cubic structure with an open side, or a hollow structure with an open side and a U-shaped cross section, which is not limited in the present application. Two sides of the slide arm 21 are slidably connected to two side walls of the slide rail 26, respectively. Can be provided with relative recess on two lateral walls respectively, the both sides of cursor slide 21 slide in the recess, perhaps the both sides of cursor slide set up the bellying and stretch into the recess and slide, and this application is not restricted to its mode of setting up. The groove can also be a waist circular hole. The worm 24 is fixedly disposed between two side walls of the slide rail 26, so that the driving mechanism 22 can exist as an independent module, which facilitates modular design of the head-mounted display device and simplifies assembly difficulty. Both ends of the worm 24 are rotatably provided on the connecting walls opposed between both sides in the sliding direction; or the bottom plates connected with each other are arranged below the two side walls, two opposite supporting seats are arranged on the bottom plates, and two ends of the worm 24 can be rotatably arranged on the two opposite supporting seats. The power member 23 may also be fixed between the two side walls, or the outside of the slide rail 26 may also be fixedly disposed, which is not limited in the present application. During assembly, the power part 23 and the worm 24 are mounted on the slide rail 26, the nut 25 is screwed in, the nut 25 is meshed with the worm 24, and then the slide rail 26 is directly mounted on the device main body 1 or the headband 4; and then the sliding arm 21 is clamped, and the sliding arm 21 is fixedly connected with the outer wall of the nut 25 through a connection mode such as a screw, so that the assembly of the equipment main body 1 and the head band 4 can be completed. This design is compact and facilitates positioning of the slide assembly 2 within the lens clearance space.

In some embodiments, the engagement between the worm 24 and the nut 25 can be self-locked by designing the friction angle, and after the power member stops driving, a stable connection relationship can be maintained without additionally arranging a locking mechanism to maintain the relative position.

In some embodiments, as shown in fig. 1 and 2, the head mounted display device further comprises a detection component 3. The detection unit 3 is provided in the apparatus body 1. The detection direction of the detection component 3 faces the headband 4, the detection component 3 is used for tracking and detecting eye information of a user, tracking can be performed according to the change of the characteristics of eyes and the periphery of the eyes, tracking can be performed according to the change of the angle of the iris, and the detection component can also be used for actively projecting light beams such as infrared rays and the like to the iris to extract the characteristics or extracting required information through other types of detection. The detection component 3 is electrically connected with the sliding component 2, information detected by the detection component 3 is related to the sliding component 2, the sliding component 2 works according to the information collected by the detection component 3, the device main body 1 and the headband 4 are close to or far away from each other, the distance between eyes of a user and the lenses is adjusted, and when the information collected by the detection component 3 is within the optimal imaging range, the sliding component 2 stops sliding. The information of the optimal imaging range of the user can be preset through equipment delivery, and can also be obtained through calculation and comparison of the information collected by the detection component 3, which is not limited in the application. The detection component 3 may complete detection and calibration once before each use, or may perform real-time and interval detection during the use process, and perform calibration through the sliding component 2, which is not limited in the present application. The specific technical principle can be the same as that of the eye refractometer in the prior art, and the details are not repeated herein. Compared with a mode of manually adjusting the distance from the eyes to the lens, the mode of manually adjusting the distance from the eyes to the lens or semi-automatically pressing the mechanical adjusting button all the time is required, after a user feels the best imaging, the adjusting button is loosened, then the position is locked, but the distance from the eyes to the lens is manually adjusted, firstly, manual adjustment is required, secondly, unfriendly experience of intermittent use can be brought along with the switching of display information through manual adjustment, thirdly, the error of manual adjustment is large, so that the user can not experience the best ornamental image quality, and the evaluation of the user on the product can be reduced. Therefore, the invention can realize the automatic adjustment of the distance between the equipment main body and the eyes of the user by acquiring the information change of the eyes of the user, namely, the user can feel the optimal imaging effect or distance, thereby enjoying continuity and obtaining the optimal use experience.

In some embodiments, an elastic buffer layer is disposed at a position where the device body 1 contacts with the face of the user, and is used for sealing the contact between the eyes and the outside, and preventing the external light from interfering with the imaging effect of the head-mounted display device. The deformation stroke range of the elastic buffer layer may correspond to a sliding stroke between the apparatus body 1 and the headband 4. The elastic buffer layer can be made of elastic materials such as silica gel, and the application is not limited to the above.

In some embodiments, the detection component 3 may comprise an eye-tracking system, i.e. an eye-tracking system. For example, as shown in fig. 1, the eye information of the user can be captured by a detection probe, such as a lens 31, and through image processing technology, the detection device 3 locates the pupil position, acquires the pupil center coordinates, and calculates the human gaze point. The method can enhance the image of the gazing point area by capturing the gazing point of the user to present a high-quality image and weaken the image of the non-gazing point area, namely, a gazing point rendering technology, on one hand, the data processing speed can be improved, and the requirements of VR equipment or application on hardware equipment are reduced, on the other hand, the method is more suitable for the characteristics of human eyes, as only one point is most clear when people gaze at the point, and other places are unclear, so that better experience can be brought to the user by blurring the non-gazing point. Further, whether the distance from the user to the lens is appropriate or not and whether the imaged image effect is optimal or not can be judged through the pupil information, so that whether the sliding assembly 2 adjusts the distance from the device body to the eyes of the user or not can be controlled.

In some embodiments, as shown in fig. 1, the apparatus body 1 is provided with a detection port 11. The main body 1 of the device is generally symmetrically provided with mounting holes of lenses opposite to eyes, the detection port 11 is positioned between the two mounting holes, and a detection probe of the detection component 3, such as a lens 31, is arranged on the detection port 11, so that the lens 31 can capture information of eyes on two sides due to a certain distance between the eyes and the lenses.

In some embodiments, the information detected by the detection assembly 3 needs to be processed by a control module to be converted into an electrical signal for controlling the sliding assembly 2. The control module may be that the detection component 3 itself is configured with a separate processing chip, and is only used for processing the information detected by the detection component 3 and sending a control instruction to the sliding component 2; or the device main board 5 of the head-mounted display device is shared to process the acquired information, the device main board 5 is usually used to process image information of the display, and the like, or a separate processing chip configured in the detection component 3 itself may be integrated on the device main board 5, which is not limited in this application. Further, the device main board 5 is generally disposed in the device main body 1, and the detection unit 3 and the sliding unit 2 are electrically connected to the device main board 5, respectively.

In some embodiments, as shown in fig. 1, the headband 4 may be provided with an adjusting mechanism 42, and the adjusting mechanism 42 is used for adjusting the size of the headband 4, so that the present invention can be adapted to different users and adjusted according to the head sizes of different users. The adjusting mechanism 42 may be a manual connecting mechanism, such as a magic tape, or an automatic adjusting mechanism driven by a motor, etc., which is not limited in the present application.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The head-mounted display device is characterized by comprising a device main body, a sliding assembly and a head band, wherein the device main body is connected with the head band through the sliding assembly, the sliding assembly comprises a driving mechanism and a sliding arm, the driving mechanism and the sliding arm are respectively fixedly connected with the device main body and the head band, the driving mechanism comprises a power part and a worm, the power part can drive the worm to rotate circumferentially, a nut matched with the worm is arranged on the sliding arm, the nut is meshed with the worm and connected with the worm, and when the worm rotates circumferentially, the device main body and the head band are close to or far away from each other;

the driving mechanism further comprises a slide rail, and the slide arm is arranged on the slide rail and slides along the slide rail;

the slide rail is provided with two opposite side walls, two sides of the slide arm are respectively in sliding connection with the two side walls of the slide rail, and the worm is fixedly arranged between the two side walls of the slide rail.

2. The head-mounted display device according to claim 1, wherein the driving mechanism and the slide arm are respectively located on a center line of the device main body and the headband, and a sliding direction is parallel to the center line.

3. The head-mounted display device according to claim 2, wherein the device body is provided with two sets of lenses facing the headband direction, the two sets of lenses are symmetrically arranged with a gap between the two sets of lenses, and the driving mechanism or the slide arm is arranged in the gap.

4. The head-mounted display device of claim 1, wherein the head band is provided with an extension arm extending towards the device main body, and the sliding arm is fixedly arranged on the extension arm and fixedly connected with the head band.

5. The head-mounted display device according to claim 1, wherein the device main body has a housing, the driving mechanism is fixedly provided in the housing, the slider is provided on the head band, and the slider is inserted into the housing and connected to the driving mechanism.

6. The head-mounted display device of claim 1, further comprising a detection component disposed within the device body, the detection component configured to detect eye information of a user, the detection component electrically connected to the motive member.

7. The head-mounted display device of claim 6, wherein the detection component comprises an eye tracking system.

8. The head-mounted display device according to claim 6, further comprising a device main board disposed in the device main board, wherein the detection component and the sliding component are electrically connected to the device main board, respectively.