A head-mounted display diopter adjustment digital display structure, method and head-mounted display

Abstract

The present application relates to a kind of head-mounted display diopter adjustment digital display structure, method and head-mounted display, structure includes sliding rheostat and the change of circuit signal caused by the resistance adjustment of sliding rheostat is converted into digital display signal encoder unit, also include rotary input component, the rotary input of rotary input component is converted into linear motion input motion conversion component, sliding rheostat and diopter component are all by the linear motion input after conversion of motion conversion component conversion linear motion input driving synchronous linear motion;Through motion conversion component, the rotary input of rotary input component input is converted into linear motion input, and rely on linear motion input driving sliding rheostat and diopter component synchronous linear motion, encoder unit changes the change of circuit signal caused by the resistance adjustment of sliding rheostat is converted into digital display signal, input arbitrary display screen can display adjustment value, guarantee the reliability of adjustment while being able to solve the existing diopter adjustment low efficiency problem.

Description

Technical Field

[0001] This invention relates to the field of head-mounted display technology, and more specifically, to a digital display structure, method, and head-mounted display for adjusting diopter in a head-mounted display. Background Technology

[0002] With the continuous miniaturization of electronic devices and the development of new computer, microelectronics, optoelectronic devices, and communication theories and technologies, wearable computing, a new model based on "human-centered" and "human-machine integration," has become possible. Its applications are emerging in military, industrial, medical, educational, and consumer fields. In a typical wearable computing system architecture, the head-mounted display device is a key component. Through optical technology, the head-mounted display device guides the video image light emitted by a miniature image display (such as a transmissive or reflective liquid crystal display, organic light-emitting diode, or DMD device) to the user's pupils, realizing virtual, magnified images within the user's near-vision range, providing the user with intuitive and visual image, video, and text information.

[0003] To achieve a better display effect, users need to press their eyes and the face around their eyes tightly against the head-mounted display when wearing it. This makes it impossible for some users with poor vision to use glasses while using the head-mounted display, resulting in a blurry image and greatly affecting the user experience.

[0004] Some existing head-mounted displays have diopter (focal length) adjustment structures, which allow users with different vision conditions to see a clear picture. However, these adjustment structures are relatively cumbersome to use, lack intuitive digital displays, and generally require a long adjustment time to achieve the best viewing effect. There is a need for a digital display method for diopter adjustment in head-mounted displays to improve the efficiency of adjustment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a digital display structure for adjusting the diopter of a head-mounted display, a method for adjusting the diopter of a head-mounted display, and a head-mounted display, in order to address the above-mentioned deficiencies of the prior art.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A head-mounted display with diopter adjustment digital display structure is constructed, which includes a sliding rheostat and an encoder unit that converts the circuit signal change caused by the resistance adjustment of the sliding rheostat into a digital display signal. It also includes a rotary input component and a motion conversion component that converts the rotational input of the rotary input component into a linear motion input. The sliding rheostat and the diopter component are both driven by the linear motion input converted by the motion conversion component to perform synchronous linear motion.

[0008] The head-mounted display diopter adjustment digital display structure of the present invention includes a motion conversion component comprising a diopter adjustment drive cam and a diopter adjustment transmission slider; the diopter adjustment drive cam is provided with an adjustment groove, and the diopter adjustment transmission slider is provided with an adjustment rod that cooperates with the adjustment groove; the rotational input of the diopter adjustment drive cam is converted into a linear motion input of the diopter adjustment transmission slider through the cooperation of the adjustment groove and the adjustment rod.

[0009] The present invention discloses a head-mounted display with diopter adjustment digital display structure, wherein the sliding rheostat is disposed above or below the optical system component, the diopter component is located at the front end of the optical system component, and the diopter adjustment transmission slider is located on one side of the optical system component; the diopter adjustment transmission slider is provided with a slot that cooperates with the sliding block of the sliding rheostat, and an optomechanical connection transmission shaft connecting the diopter component.

[0010] The head-mounted display diopter adjustment digital display structure of the present invention includes a plurality of parallel guide rods on the diopter component and a guide sleeve that cooperates with the guide rods on the optical system component; the diopter component and the optical system component are also connected by a return spring.

[0011] The head-mounted display diopter adjustment digital display structure of the present invention includes a guide shaft on the optical system component for sliding guidance of the diopter adjustment transmission slider.

[0012] The head-mounted display diopter adjustment digital display structure of the present invention includes a PCB board disposed above or below the optical system components, and the sliding rheostat disposed on the PCB board.

[0013] The head-mounted display diopter adjustment digital display structure of the present invention further includes a diopter adjustment component bracket for mounting the diopter adjustment drive cam, wherein an external gear ring is provided on the outer periphery of the diopter adjustment drive cam; the diopter adjustment component bracket is provided with a stop ball that presses against the external gear ring, a stop ball spring that provides elastic pressing force to the stop ball, and a mounting chamber for mounting the stop ball and the stop ball spring.

[0014] The present invention discloses a head-mounted display with diopter adjustment digital display structure, wherein the mounting chamber is protruding and formed on one side surface of the diopter adjustment component bracket; an opening for inserting the shift ball and the shift ball spring is provided on one side surface of the mounting chamber, and a shift ball cover plate for closing the opening is provided; the shift ball cover plate is concave and has a slot on each of the two concave arms; and the upper and lower surfaces of the mounting chamber are provided with buckles that cooperate with the slots.

[0015] A method for digital display of diopter adjustment in a head-mounted display, applied to the aforementioned head-mounted display structure, is implemented as follows:

[0016] The motion conversion component converts the rotational input from the rotational input component into a linear motion input, and drives the sliding rheostat and diopter component to move synchronously and linearly based on the linear motion input;

[0017] The encoder unit converts the changes in circuit signals caused by the adjustment of the resistance value of the sliding rheostat into digital display signals.

[0018] A head-mounted display, wherein the head-mounted display is provided with a head-mounted display diopter adjustment digital display structure as described above.

[0019] The beneficial effects of this invention are as follows: By applying the method of this application, the rotational input input from the rotational input component is converted into a linear motion input through the motion conversion component, and the linear motion input drives the sliding rheostat and the diopter component to move synchronously and linearly. The encoder unit converts the circuit signal changes caused by the resistance adjustment of the sliding rheostat into digital display signals, which can be input into any display screen to display the adjustment value, thus achieving the purpose of intuitive display of diopter adjustment. The overall structure is reasonable and very compact, ensuring the reliability of adjustment while solving the problem of low efficiency in existing diopter adjustment. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or 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 skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0021] Figure 1 This is a schematic diagram of the assembled structure of the head-mounted display diopter adjustment digital display structure, including the rotary input component, motion conversion component, diopter component, and optical system component, according to a preferred embodiment of the present invention.

[0022] Figure 2 This is an exploded view of the head-mounted display diopter adjustment digital display structure according to a preferred embodiment of the present invention;

[0023] Figure 3 This is an exploded view of the sliding rheostat and the diopter adjustment transmission slider of the head-mounted display diopter adjustment digital display structure according to a preferred embodiment of the present invention.

[0024] Figure 4 This is an exploded view of the rotating input component and motion conversion component of the head-mounted display diopter adjustment digital display structure according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a head-mounted display according to a preferred embodiment of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0027] The preferred embodiment of the head-mounted display diopter adjustment digital display structure of the present invention, such as... Figure 1 As shown, see also Figure 2-4 It includes a sliding rheostat 1 and an encoder unit that converts the circuit signal change caused by the resistance adjustment of the sliding rheostat 1 into a digital display signal. It also includes a rotary input component 3 and a motion conversion component 4 that converts the rotational input of the rotary input component 3 into a linear motion input. The sliding rheostat 1 and the diopter component 5 are both driven by the linear motion input converted by the motion conversion component 4 to perform synchronous linear motion.

[0028] By applying the method of this application, the rotational input from the rotational input component 3 is converted into a linear motion input by the motion conversion component 4, and the linear motion input drives the sliding rheostat 1 and the diopter component 5 to move synchronously and linearly. The encoder unit converts the circuit signal change caused by the resistance adjustment of the sliding rheostat 1 into a digital display signal. The adjustment value can be displayed on any display screen, achieving the purpose of intuitive display of diopter adjustment. The overall structure is reasonable and very compact, ensuring the reliability of adjustment while solving the problem of low efficiency of existing diopter adjustment.

[0029] It should be noted that the aforementioned display screen can be an OLED screen built into the head-mounted display or an external display screen; both implementations can achieve the display purpose; of course, a communication module can also be used to transmit data to external devices such as mobile phones for numerical display; the above-mentioned methods of displaying digital display signals using existing technology are all within the scope of protection of this application; wherein, the encoder unit can use existing encoder chips.

[0030] The most common type of rotary input component 3 is a manually adjustable knob. Of course, it can also be replaced with other existing forms, such as motor-driven rotation.

[0031] The motion conversion component 4 can adopt the specific structure described below, or it can adopt other existing structural forms that can realize motion conversion;

[0032] Preferably, the motion conversion component 4 includes a diopter adjustment drive cam 40 and a diopter adjustment transmission slider 41; the diopter adjustment drive cam 40 is provided with an adjustment groove 400, and the diopter adjustment transmission slider 41 is provided with an adjustment rod 410 that cooperates with the adjustment groove; the rotational input of the diopter adjustment drive cam 40 is converted into the linear motion input of the diopter adjustment transmission slider 41 through the cooperation of the adjustment groove 400 and the adjustment rod 410; the structure is reasonable and very compact, with good stability and high control accuracy;

[0033] The slotting shape of the adjustment groove 400 directly determines the conversion ratio between rotary input and linear motion. The slotting shape of the adjustment groove 400 can be designed according to the actual required conversion ratio.

[0034] The diopter adjustment drive slider 41 can be slidably connected to the overall housing of the head-mounted display, or it can be provided on the optical system component 6 with a guide shaft 60 for guiding the diopter adjustment drive slider 41 to slide.

[0035] Preferably, a better structural layout is as follows: the sliding rheostat 1 is disposed above or below the optical system component 6, the diopter component 5 is located at the front end of the optical system component 6, and the diopter adjustment transmission slider 41 is located on one side of the optical system component 6; the diopter adjustment transmission slider 41 is provided with a slot 411 that cooperates with the sliding block of the sliding rheostat 1, and an optomechanical connection transmission shaft 412 connecting the diopter component 5;

[0036] When the diopter adjustment transmission slider 41 moves linearly, it will move the sliding block of the sliding rheostat 1 through the slot 411, and at the same time drive the diopter assembly 5 to move through the optomechanical connection transmission shaft 412, thereby realizing the synchronous linear movement of the sliding rheostat 1 and the diopter assembly 5. The structure is reasonable and compact, easy to set up, has good stability, and is easy to assemble and maintain.

[0037] Furthermore, a PCB board 8 is provided above or below the optical system component 6, and a sliding rheostat 1 is provided on the PCB board 8.

[0038] Preferably, the diopter assembly 5 is provided with a plurality of parallel guide rods 50, and the optical system assembly 6 is provided with a guide sleeve 61 that cooperates with the guide rods 50; the diopter assembly 5 and the optical system assembly 6 are also connected by a return spring 7; the cooperation between the guide rods 50 and the guide sleeve 61 ensures the movement accuracy between the optical system assembly 6 and the diopter assembly 5, while the elastic tension of the return spring 7 can ensure the overall stability and reduce the shaking caused by component errors.

[0039] Preferably, the head-mounted display with diopter adjustment digital display structure further includes a diopter adjustment component bracket 9 for mounting a diopter adjustment drive cam 40, and an external gear ring 401 is provided on the outer periphery of the diopter adjustment drive cam 40; the diopter adjustment component bracket 9 is provided with a stop ball 90 pressed on the external gear ring 401, a stop ball spring 91 providing elastic pressing force for the stop ball 90, and a mounting chamber 92 for mounting the stop ball 90 and the stop ball spring 91, the mounting chamber 92 being protruded and formed on one side surface of the diopter adjustment component bracket; one side surface of the mounting chamber 92 is provided with an opening 920 for mounting the stop ball 90 and the stop ball spring 91 and a stop ball cover plate 921 for closing the opening 920; the stop ball cover plate 921 is concave and each of the two concave arms is provided with a slot 922; the upper and lower surfaces of the mounting chamber 92 are provided with buckles 923 that cooperate with the slots 922;

[0040] The structure is reasonable and easy to assemble. When the diopter adjustment drive cam 40 rotates, it will drive the outer gear ring 401 to rotate synchronously. Whenever the gear ball 90 passes through one tooth groove of the outer gear ring 401, it will collide with the outer gear ring 401 to produce a mechanical feedback "click" sound, which serves as an indication sound for gear adjustment.

[0041] Ideally, the diopter adjustment is divided into 19 levels, with a visual range of +200 to -700 degrees.

[0042] A method for digital display of diopter adjustment in a head-mounted display, applied to the aforementioned head-mounted display structure, is implemented as follows:

[0043] The motion conversion component converts the rotational input from the rotational input component into a linear motion input, and drives the sliding rheostat and diopter component to move synchronously and linearly based on the linear motion input;

[0044] The encoder unit converts the changes in circuit signals caused by the adjustment of the resistance value of the sliding rheostat into digital display signals;

[0045] The method of this application can achieve the purpose of intuitive display of refractive power adjustment. The overall structure is reasonable and very compact, which can ensure the reliability of adjustment while solving the problem of low efficiency of existing refractive power adjustment.

[0046] A type of head-mounted display, such as Figure 5 As shown, the head-mounted display is equipped with a digital display structure for adjusting the diopter of the head-mounted display as described above;

[0047] Preferably, both the left eye refractive power adjustment component 100 and the right eye refractive power adjustment component 101 on the head-mounted display adopt the above-described digital display structure for head-mounted display refractive power adjustment.

[0048] Figure 5 The number 102 in the diagram represents the optical engine component, and the number 8 represents the PCB board.

[0049] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A head-mounted display diopter adjustment digital readout structure, characterized in that, The head-mounted display diopter adjustment digital display structure further comprises a diopter adjustment assembly support for mounting the diopter adjustment driving cam, and an outer gear ring is arranged on the outer periphery of the diopter adjustment driving cam; the diopter adjustment assembly support is provided with a gear steel ball pressed on the outer gear ring, a gear steel ball spring for providing elastic pressing force for the gear steel ball, and a mounting cavity for mounting the gear steel ball and the gear steel ball spring.

2. The head-mounted display diopter adjustment digital readout structure of claim 1, wherein, The mounting cavity is protrudingly formed on one side surface of the diopter adjustment assembly support; one side surface of the mounting cavity is provided with an opening for loading the gear steel ball and the gear steel ball spring and a gear steel ball cover plate for closing the opening; the gear steel ball cover plate is concave, and clamping grooves are arranged on two arms of the concave shape; the upper surface and the lower surface of the mounting cavity are provided with buckles matched with the clamping grooves.

3. The head-mounted display diopter adjustment digital readout structure of claim 2, wherein, The implementation method is as follows:

4. A head-mounted display diopter adjustment digital readout method applied to the head-mounted display diopter adjustment digital readout structure of any one of claims 1-3, characterized in that, The motion conversion assembly converts the rotary input of the rotary input assembly into linear motion input, and drives the slide rheostat and the diopter assembly to perform synchronous linear motion by the linear motion input; The encoder unit converts the circuit signal change caused by the resistance value adjustment of the slide rheostat into a digital display signal. The head-mounted display is provided with the head-mounted display diopter adjustment digital display structure as claimed in any one of claims 1-4.

5. A head-mounted display, comprising: ​

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