An open binocular near-eye display device with adjustable diopter

Abstract

The present invention relates to an open binocular near-eye display device with adjustable diopter, comprising a display host for viewing an enlarged image with both eyes at the same time, a forehead support component that contacts the forehead of a human body for wear and fixation; and also comprising a flip connection mechanism that connects the display host and the forehead support component and enables the display host to be in an open state with the human face when in use; the display host comprises: a mounting base and two fixed frame modules mounted on the mounting base, the fixed frame modules are provided with an optical module, a display screen module and a distance adjustment component for adjusting the distance between the optical module and the display screen module; the distance adjustment component relies on an output shaft on a sliding plate to output diopter adjustment, so that the number of diopter adjustment components is greatly reduced, the assembly is simplified, and the volume can be greatly reduced, the structure is more compact, and the adjustment stability and adjustment accuracy can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of near-eye display technology, and more specifically to an open binocular near-eye display device with adjustable diopter. Background Art

[0002] Augmented reality (AR) and virtual reality (VR) are currently the hottest virtual sensory interaction technologies and have been gradually applied to entertainment, education, medical and other industries. At present, the main platform device for realizing AR / VR technology is near-eye display (NED). NED uses optical technology to guide the video image light emitted by a micro-image display (such as a transmissive or reflective liquid crystal display, an organic electroluminescent device, or a DMD device) to the user's pupil, realizing virtual and magnified images within the user's near-eye range, and providing users with intuitive and visible images, videos, and text information.

[0003] Existing near-eye display devices are roughly divided into two types: closed type and open type.

[0004] The more common ones are closed near-eye display devices, which have functions such as watching movies, games and entertainment, and display images to the wearer's eyes in a closed visual environment. Since this type of near-eye display device views the image in a visually closed environment, the user's eyes cannot view the outside world at any time, so its application and experience are subject to certain restrictions.

[0005] Another form of near-eye display device displays images to the wearer's single eye in an open visual environment. When using it, the wearer needs to change his or her normal eye habits and close the other eye to see the image displayed on the single-sided display. In addition, the position of the single-sided display cannot block the wearer's visual center, and the display area cannot be too large. These factors make it difficult to wear and use.

[0006] Another form of near-eye display device displays images to the wearer's eyes in an open visual environment. For example, Chinese invention patent CN 105511081 A discloses a head-mounted binocular display device, including: two displays arranged relative to the wearer's eyes, the two displays are offset 5-30 degrees upward relative to the horizontal plane of the binocular line of sight; two sets of optical elements are arranged relative to the two displays to magnify the images displayed on the displays, and other structures.

[0007] Chinese invention patent CN 211928304 U discloses a near-eye display device and a near-eye display glasses set, comprising: at least one projection optical device for projecting an image; a pair of optical display lenses for displaying the image projected via the projection optical device; and a near-eye display glasses frame, wherein the projection optical device and the optical display lenses are correspondingly mounted on the near-eye display glasses frame, and the near-eye display glasses frame is provided with structures such as a nose pad mounting portion and a glasses holding mechanism.

[0008] At present, some of the above-mentioned open near-eye display devices are equipped with a diopter (focal length) adjustment structure, which can enable users with different vision conditions to see clear pictures. However, the adjustment accuracy of these adjustment structures is difficult to guarantee, and the overall volume of the structure is also large. A structure that is more compact and can ensure adjustment stability and adjustment accuracy is needed. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide an open binocular near-eye display device with adjustable diopter in view of the above-mentioned defects of the prior art.

[0010] The technical solution adopted by the present invention to solve its technical problem is:

[0011] A diopter-adjustable open binocular near-eye display device is constructed, which includes a display host for both eyes to view an enlarged image at the same time, a forehead support component that contacts the forehead of a human body for wear and fixation; and a flip connection mechanism that connects the display host and the forehead support component and enables the display host to be in an open state with the human face when in use; the display host includes:

[0012] A mounting base and two fixed frame modules mounted on the mounting base, wherein the fixed frame modules are provided with an optical module, a display screen module and a distance adjustment component for adjusting the distance between the optical module and the display screen module.

[0013] The open binocular near-eye display device with adjustable diopter described in the present invention, wherein the distance adjustment component includes a diopter adjustment knob, a sliding plate for performing diopter adjustment output, and an elastic gear locking piece; a ring-shaped outer gear ring is provided on one side surface of the diopter adjustment knob to cooperate with the gear locking piece for gear locking, and a cam groove is provided at the inner hole of the outer gear ring of the diopter adjustment knob; an output shaft is provided on one side surface of the sliding plate, and an input shaft cooperating with the cam groove is provided on the other side surface.

[0014] The open binocular near-eye display device with adjustable diopter described in the present invention, wherein the optical module and the display screen module are slidably connected via a guide shaft assembly, and a hole that cooperates with the output shaft is provided on the display screen module.

[0015] The open binocular near-eye display device with adjustable diopter of the present invention is characterized in that the fixed frame module is provided with mounting slots for mounting the optical module and the display screen module.

[0016] The open binocular near-eye display device with adjustable diopter described in the present invention, wherein a first through hole is provided on one side surface of the fixed frame module, and a connecting seat rotatably connected to the diopter adjustment knob and a sliding rail assembly slidably connected to the sliding plate are provided at the first through hole.

[0017] In the open binocular near-eye display device with adjustable diopter described in the present invention, the sliding plate is provided with a second through hole for the connecting seat to pass through.

[0018] The open binocular near-eye display device with adjustable diopter described in the present invention, wherein the optical module is fixedly mounted on the mounting slot, and the structure further includes an elastic reset member for resetting the display screen module after adjustment.

[0019] In the open binocular near-eye display device with adjustable diopter of the present invention, the elastic reset member is one or more first springs connecting the optical module and the display screen module.

[0020] In the open binocular near-eye display device with adjustable diopter described in the present invention, the gear locking member includes a steel ball matched with the outer gear ring and a second spring that maintains an elastic pressing force on the steel ball.

[0021] In the open binocular near-eye display device with adjustable diopter described in the present invention, a positioning cylinder for mounting the second spring and the steel ball is provided at the first through hole.

[0022] The beneficial effects of the present invention are as follows: an outer gear ring and a cam groove are arranged on the same side of the diopter adjustment knob, the outer gear ring cooperates with the gear locking piece to perform gear adjustment and locking, the cam groove cooperates with the input shaft on the sliding plate to drive the sliding plate to move, and the diopter adjustment is output by relying on the output shaft on the sliding plate, so that the number of diopter adjustment components is greatly reduced, and the assembly is simplified, and the volume can be greatly reduced, the structure is more compact, and the adjustment stability and adjustment accuracy can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0024] Figure 1 It is an exploded view of the distance adjustment component of an open binocular near-eye display device with adjustable diopter according to a preferred embodiment of the present invention;

[0025] Figure 2 This is an exploded view of another viewing angle adjustment component of an open binocular near-eye display device with adjustable diopter in a preferred embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of adjusting the distance adjustment component of an open binocular near-eye display device with adjustable diopter according to a preferred embodiment of the present invention;

[0027] Figure 4 It is an enlarged schematic diagram of the assembly of the rotary adjustment knob of the open binocular near-eye display device with adjustable diopter in a preferred embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of a display host of an open binocular near-eye display device with adjustable diopter according to a preferred embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the overall structure of an open binocular near-eye display device with adjustable diopter according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0031] The preferred embodiment of the present invention is an open binocular near-eye display device with adjustable diopter, such as Figure 1 See also Figure 2-Figure 6 The device comprises a display host 100 for both eyes to simultaneously view the magnified image, a forehead support component 101 that contacts the forehead of a human body for wearing and fixing; and a flip connection mechanism that connects the display host 100 and the forehead support component 101 and enables the display host to be in an open state with the human face when in use; the display host comprises:

[0032] A mounting base 9 and two fixed frame modules 7 mounted on the mounting base, wherein the fixed frame module 7 is provided with an optical module 4, a display screen module 5 and a distance adjustment component for adjusting the distance between the optical module and the display screen module;

[0033] The distance adjustment component includes a diopter adjustment knob 1, a sliding plate 2 for diopter adjustment output, and a gear locking member 3 with elasticity; a ring-shaped outer gear ring 10 for gear locking in cooperation with the gear locking member 3 is arranged on one side surface of the diopter adjustment knob 1, and a cam groove 11 is arranged at the inner hole of the outer gear ring 10 of the diopter adjustment knob 1; an output shaft 20 is arranged on one side surface of the sliding plate 2, and an input shaft 21 for cooperation with the cam groove 11 is arranged on the other side surface;

[0034] An outer gear ring 10 and a cam groove 11 are provided on the same side of the diopter adjustment knob 1. The outer gear ring 10 cooperates with the gear locking member 3 to perform gear adjustment and locking, and the cam groove 11 cooperates with the input shaft 21 on the sliding plate 2 to drive the sliding plate 2 to move, and the diopter adjustment is output by relying on the output shaft 20 on the sliding plate 2, so that the number of diopter adjustment components is greatly reduced and the assembly is simplified, and the volume can be greatly reduced, the structure is more compact, and the adjustment stability and adjustment accuracy can be guaranteed.

[0035] Preferably, the optical module 4 and the display screen module 5 are slidably connected via a guide shaft assembly 6, and a hole 50 is provided on the display screen module 5 that cooperates with the output shaft 21; when the sliding plate 2 slides, the display screen module 5 is driven to move through the cooperation between the output shaft 20 and the hole 50, thereby adjusting the distance between the optical module 4 and the display screen module 5, thereby achieving diopter adjustment.

[0036] Preferably, the fixed frame module 7 is provided with mounting slots for mounting the optical module 4 and the display screen module 5, and a first through hole 70 is provided on one side surface of the fixed frame module 7, and a connecting seat 71 rotatably connected to the diopter adjustment knob 1 and a slide rail assembly slidably connected to the slide plate 2 are provided at the first through hole 70;

[0037] The fixed frame module 7 relies on the mounting slots to install the optical module 4 and the display screen module 5, and a first through hole 70 is provided to correspond to the installation of the diopter adjustment knob 1. During installation, the diopter adjustment knob 1 can be rotatably connected to the connecting seat 71 by means of a rotating shaft or the like, and the sliding plate 2 relies on the slide rail assembly for longitudinal sliding assembly. This structural layout design is convenient for assembly. After assembly, the fixed frame module 7 can be used or assembled with the outside as a separate module, with good integrity, a very compact structure, and a small size.

[0038] Preferably, a second through hole 22 is provided on the sliding plate 2 for the connecting seat 71 to pass through; through this design, the sliding plate 2 can be relatively close to the diopter adjustment knob 1 during installation, which is the key to reducing the overall volume while ensuring that the volume of the sliding plate 2 can be relatively larger. After the volume of the sliding plate 2 is enlarged, it can be assembled more conveniently, and at the same time, more options are provided for the setting positions of the output shaft 20 and the input shaft 21, and the product has a wider adaptability range in the input-output ratio of the drive design.

[0039] Preferably, the optical module 4 is fixedly mounted on the mounting slot, and the structure also includes an elastic reset member 8 for resetting the display screen module 5 after adjustment; the light module 4 is stationary while the display screen module 5 moves to perform diopter adjustment, and tensioning is performed by relying on the elastic tension of the elastic reset member 8 to ensure the stability of the position after adjustment.

[0040] Preferably, the elastic return member 8 is one or more first springs connecting the optical module 4 and the display screen module 5; this method is a relatively simple implementation method and is also very convenient to assemble; of course, other existing designs can also be adopted, and the solution obtained based on this structural transformation also belongs to the protection scope of this application.

[0041] Preferably, the gear locking member 3 includes a steel ball 30 that cooperates with the outer gear ring 10 and a second spring 31 that maintains an elastic pressure on the steel ball 30. A positioning tube 72 for installing the second spring 31 and the steel ball 30 is provided at the first through hole 70. The structure is simple, and the steel ball 30 relies on the elastic force of the second spring 31 to be stuck in the tooth groove of the outer gear ring 10 for gear positioning. At the same time, it will be accompanied by a warning sound of impact, which is more comfortable to use.

[0042] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. An open binocular near-eye display device with adjustable diopter, characterized in that: It includes a display host for both eyes to view the magnified image at the same time, and a forehead support component that contacts the forehead of the human body for wearing and fixing; it also includes a flip connection mechanism that connects the display host and the forehead support component and enables the display host to be in an open state with the human face when in use; The display host comprises: a mounting base and two fixed frame modules mounted on the mounting base, the fixed frame modules are provided with an optical module, a display screen module and a distance adjustment component for adjusting the distance between the optical module and the display screen module; the distance adjustment component comprises: a diopter adjustment knob, a sliding plate for diopter adjustment output and a gear locking member with elasticity; A ring-shaped outer gear ring is provided on one side surface of the diopter adjustment knob, and cooperates with the gear locking member to lock the gear position. A cam groove is provided at the inner hole of the outer gear ring of the diopter adjustment knob; An output shaft is arranged on one side surface of the sliding plate, and an input shaft matching with the cam groove is arranged on the other side surface; A first through hole is provided on one side surface of the fixed frame module, and a connecting seat rotatably connected to the diopter adjustment knob and a slide rail assembly slidably connected to the slide plate are provided at the first through hole; The sliding plate is provided with a second through hole for the connecting seat to pass through.

2. The open binocular near-eye display device with adjustable diopter according to claim 1, characterized in that: The optical module is slidably connected to the display screen module via a guide shaft assembly, and a hole matching the output shaft is arranged on the display screen module.

3. The open binocular near-eye display device with adjustable diopter according to claim 2, characterized in that: The fixing frame module is provided with mounting slots for mounting the optical module and the display screen module.

4. The open binocular near-eye display device with adjustable diopter according to claim 3, characterized in that: The optical module is fixedly mounted on the mounting slot, and the device further comprises an elastic reset member for resetting the display screen module after adjustment.

5. The open binocular near-eye display device with adjustable diopter according to claim 4, characterized in that: The elastic return member is one or more first springs connecting the optical module and the display screen module.

6. The open binocular near-eye display device with adjustable diopter according to claim 1, characterized in that: The gear locking member includes a steel ball matched with the outer gear ring and a second spring for maintaining an elastic pressing force on the steel ball.

7. The open binocular near-eye display device with adjustable diopter according to claim 6, characterized in that: The first through hole is provided with a positioning tube for mounting the second spring and the steel ball.

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