Head-mounted eye detection device

Abstract

The utility model discloses a head-mounted eye detection device which comprises a shell, a head band connected to the shell, a display assembly installed on the outer side of the shell and two lens cone assemblies arranged side by side. The two lens cone assemblies comprise hollow shells with two open ends, and eyepiece lenses and objective lenses which are sequentially arranged in the hollow shells from inside to outside, and the two hollow shells are respectively mounted in the shell through fine adjustment structures in a back-to-back or opposite-to-opposite movement manner; the fine adjustment structure comprises a main gear and two racks arranged oppositely, the two racks are meshed with the main gear, the two racks are installed in the outer shell in a sliding mode, and the two racks are fixedly matched with the two hollow shells in a one-to-one mode.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and more specifically to a head-mounted eye detection device. Background Art

[0002] At present, most of the methods for testing vision in hospitals and eyewear stores are still using eye charts. Eye chart testing requires a fixed location, a large space, and an environment with brightness that matches the eye chart. It has great limitations and cannot detect vision anytime and anywhere.

[0003] Based on this, someone has designed a portable vision detection device and a vision detection system, which include a hollow shell with openings at both ends, a first lens group for magnifying the image to be observed, and a second lens group for further magnifying the real image magnified by the first lens group. The two ends of the hollow shell correspond to the observation port and the image port, respectively. When in use, the hollow shell is fixed on the display screen of a smartphone, and the vision chart displayed on the smartphone is made to correspond to the image port. The image to be observed is magnified by the first lens group to obtain a real image corresponding to the image to be observed. The real image corresponding to the image to be observed is transmitted by the second lens group to obtain a virtual image corresponding to the real image. The virtual image corresponding to the real image can be observed through the observation port. In this way, the distance between the observation port and the image port is shortened, the volume of the portable vision detection device is reduced, and it is convenient for users to detect their vision anytime and anywhere.

[0004] Although the above-mentioned detection device solves the problem of limited use, it is more troublesome to use because the device needs to be tied to the display device and is prone to shaking when operated with one hand, or causes an uncomfortable posture when looking down. In addition, the image port of the detection device needs to face the position of the eye chart on the display screen. Therefore, once the hollow shell shakes or the display device shakes, the position of the image port facing the eye chart will be shifted, affecting the vision detection.

[0005] In view of this, the applicant conducted in-depth research on this basis, which led to the emergence of this case. Utility Model Content

[0006] The utility model aims to provide a head-mounted eye detection device, which can detect vision anytime and anywhere, and the vision detection operation is stable, simple and convenient.

[0007] To achieve the above purpose, the solution of the utility model is:

[0008] A head-mounted eye detection device comprises a shell, a headband connected to the shell, a display assembly installed on the outer side of the shell, and two lens barrel assemblies arranged side by side; the two lens barrel assemblies comprise a hollow shell with openings at both ends and an eyepiece lens and an objective lens sequentially arranged in the hollow shell from the inside to the outside, the two hollow shells are respectively installed in the shell in a manner of moving back to back or towards each other through a fine-tuning structure; the fine-tuning structure comprises a main gear and two oppositely arranged racks, the two racks are respectively meshed with the main gear, the two racks are respectively installed in the shell in a manner of being able to slide, and the two racks are respectively fixedly matched with the two hollow shells in a one-to-one manner.

[0009] Two slide grooves are arranged in the shell, and sliders are slidably arranged in the two slide grooves respectively, and the two sliders are fixedly connected to the two racks in a one-to-one manner.

[0010] A fixing hole is opened in the middle of the inner side of the shell, and a rotating shaft is rotatably installed in the fixing hole. One end of the rotating shaft is connected to the main gear, and the other end of the rotating shaft is connected to a knob.

[0011] A concave cavity is provided in the middle of the inner side of the shell, the concave cavity is coaxially arranged with the fixing hole, and the concave cavity and the fixing hole are communicated with each other, and the knob is rotatably installed in the concave cavity.

[0012] Each of the hollow shells is respectively provided with an auxiliary slide groove. In each of the hollow shells, each of the auxiliary slide grooves is arranged side by side with the rack. Each of the auxiliary slide grooves is respectively slidably provided with an auxiliary slider, and each of the auxiliary sliders is respectively fixedly connected to the corresponding hollow shell.

[0013] Two through holes 1 are provided on the outer side of the shell, and the two through holes 1 are respectively arranged one-to-one with the two lens barrel assemblies; two through holes 2 are provided on the inner side of the shell, and the two through holes 2 correspond to the two through holes 1 respectively; wherein the outer ends of the two hollow shells are respectively located in the through holes 1, and the inner ends of the two hollow shells protrude from the corresponding through holes 2.

[0014] The inner side surface of the shell is an arc-shaped surface that bends inward in a direction away from the center line with its center line as the base point, and the outer side surface of the hollow shell is the reference plane. The left and right sides of the inner side of the hollow shell are higher than the middle position, and the inner side edge of the hollow shell protrudes inward to form an inner flange.

[0015] It also includes a baffle plate, which is installed at the inner port of the hollow shell in a detachable manner; or, slots are respectively opened on the two hollow shells, and the two slots are respectively equipped with sealing plugs, and the baffle plate is installed inside the hollow shell through the slots in a pluggable manner.

[0016] The display assembly comprises a mounting cover and a display screen for displaying a vision chart. The mounting cover is mounted on the outer side of the housing, and the display screen is mounted on the mounting cover.

[0017] It also includes a control system, which includes an MCU, a button group and a speaker. The MCU is arranged in a control box, and the control box is installed on the side wall of the shell. The button group is located outside the shell 1; each of the button groups corresponds to the buttons of the four directions in the eye chart; wherein the MCU is bidirectionally connected to the display screen to randomly specify the corresponding pattern of the eye chart in the display screen; each of the button groups is electrically connected to the signal input end of the MCU to feed back the pattern direction indicated by the current display screen to the MCU through the corresponding button; the signal output end of the MCU is electrically connected to the signal input end of the speaker to play the judgment result through the speaker.

[0018] After adopting the above structure, the utility model has the following beneficial effects: the utility model arranges two lens barrel assemblies in the shell, and a headband is arranged on the shell, which is convenient for users to wear. The utility model is not easy to shake during detection, and is relatively stable, thereby improving the detection accuracy. Taking the right eye as an example, the user sees the eye chart in the display assembly through the lens barrel assembly on the right side for detection. The detection process is simple and convenient, and no hand support is required, and the user can wear the device on the head for detection anytime and anywhere; and because the spacing between the two lens barrel assemblies can be fine-tuned, and the fine-tuning structure is simple, the device can be suitable for different age groups and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the eye detection device of the utility model.

[0020] Figure 2 This is a schematic structural diagram of the eye detection device of the present invention from another angle (headband omitted).

[0021] Figure 3 It is a schematic diagram of the cooperation between the fine-tuning structure and the hollow shell in the utility model.

[0022] Figure 4 It is a schematic diagram of the assembly of the display component and the housing in the utility model.

[0023] In the figure:

[0024] 1-housing; 2-lens barrel assembly; 21-hollow shell; 22-eyepiece lens; 23-objective lens; 31-main gear; 32-rack; 33-knob; 41-mounting cover; 42-display screen; 6-headband. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0026] A head-mounted eye detection device, such as Figure 1-4 As shown, it includes a shell 1, a display component, two lens barrel components 2 arranged side by side, and a headband 6 for wearing on the head, the headband 6 is connected to the shell 1, the display component is arranged on the outside of the shell 1, and the two lens barrel components 2 are arranged inside the shell 1. The inside here refers to the side where the human eyes are located when in use, and the side of the shell 1 away from the inside is the outside; preferably, the two lens barrel components 2 are symmetrically arranged along the center line of the shell 1, where the center line is the center between the two hollow shells 21 of the shell 1 and an extension line parallel to the axis of the hollow shell 21, and the direction horizontally perpendicular to the center line is the left-right direction.

[0027] For the convenience of description, the orientation of the housing 1 when the utility model is in use is taken as a reference direction.

[0028] The outer side of the housing 1 is provided with two through holes 1, which are respectively arranged one-to-one with the two lens barrel assemblies 2, and the inner side of the housing 1 is provided with two through holes 2, which are respectively arranged one-to-one with the through hole assemblies 2.

[0029] The display assembly includes a mounting cover 41 and a display screen 42 mounted on the mounting cover 41. The display screen 42 displays a visual acuity chart. The mounting cover 41 is mounted on the outer side of the housing 1 to cover the outer side of the housing 1. In other words, the display screen 42 corresponds to the two lens barrel assemblies 2. Preferably, the mounting cover 41 and the housing 1 are connected by a detachable structure for easy maintenance. The detachable structure is an existing conventional structure. For example, the mounting cover 41 is adapted to the housing 1 and the mounting cover 41 is covered on the housing 1; for another example, the mounting cover 41 is hingedly connected to the outer side of the housing 1.

[0030] The two lens barrel assemblies 2 mentioned above each include a hollow shell 21 with openings at both ends, and an eyepiece lens 22 and an objective lens 23 which are sequentially arranged in the hollow shell 21 from the inside to the outside. The eyepiece lens 22 and the objective lens 23 in each lens barrel assembly 2 are respectively arranged at the two ends of the hollow shell 21. In this embodiment, the eyepiece lens 22 is arranged in the hollow shell 21 and is adjacent to its inner port, and the objective lens 23 is arranged at the outer port of the hollow shell 21. In addition, the two hollow shells 21 are respectively installed in the outer shell 1 in a manner of moving back to back or towards each other through a fine-tuning structure. The two hollow shells 21 are arranged along the inner and outer directions, and the inner ends of the two hollow shells 21 are respectively located in the corresponding through hole two, and the outer ends of the two hollow shells 21 are respectively located in the corresponding through hole one.

[0031] Preferably, the inner ends of the two hollow shells 21 protrude out of the corresponding through holes 2, so that the eyes can be accommodated at the inner ports of the hollow shells 21 when in use, and the side walls of the hollow shells 21 are surrounded to block light.

[0032] Preferably, the inner side surface of the above-mentioned shell 1 is an arc-shaped surface that is bent inward in a direction away from the center line with the center line as the base point, and the left and right sides of the inner side of the hollow shell 21 are higher than the middle position with the outer side of the hollow shell 21 as the reference plane to further block light; best, the inner side edge of the hollow shell 21 protrudes inward to form an inner flange, so as to further block light and avoid affecting vision detection.

[0033] In addition, in this embodiment, the eyepiece lens and the objective lens in the above-mentioned lens barrel assembly 2, as well as the eyepiece lens and the objective lens cooperate with each other to form a standard viewing distance for simulated detection. The principle of simulated detection is an existing well-known technology, such as the Chinese patent application number 202020141539.X.

[0034] Furthermore, the above-mentioned fine-tuning structure includes a main gear 31 and two oppositely arranged racks 32, the two racks 32 are respectively meshed with the main gear 31, the main gear 31 is rotatably arranged in the middle position of the shell 1, and the axis of the main gear 31 coincides with the center line of the shell 1; the two racks 32 are respectively installed in the shell 1 in a slidable manner, the two racks 32 are respectively arranged in the left and right directions, and the two racks 32 are respectively fixedly connected to the outer side walls of the two hollow shells 21 one by one. In this embodiment, each rack 32 and the corresponding hollow shell 21 can be connected together by conventional methods such as welding.

[0035] Furthermore, in this embodiment, the rotation structure of the main gear 31 adopts an existing conventional rotation structure. For example, a rotatable rotating shaft is installed at the center line of the inner side of the outer shell 1, and the rotating shaft is keyed to a fixed hole provided on the outer shell 1. One end of the rotating shaft is connected to the knob 33, and the other end is connected to the main gear 31. A concave cavity is provided on the inner side of the outer shell 1, and the knob 33 is rotatably installed in the concave cavity.

[0036] In this embodiment, the sliding structure of the above-mentioned two gears 32 adopts the existing conventional structure. For example, the outer shell 1 is respectively provided with two slide grooves, both of which are arranged in the left and right directions, and one of the slide grooves is located on the upper side of the other slide groove. The two slide grooves are respectively slidably matched with the sliders, and the two sliders are respectively one-to-one matched with the two racks 32. The two sliders are respectively fixed on the corresponding racks 32, so that the racks 32 slide along the corresponding slide grooves.

[0037] Preferably, each hollow shell 21 is provided with a plurality of auxiliary slide grooves, and each auxiliary slide groove is arranged in the left-right direction. In this embodiment, two auxiliary slide grooves are provided on one hollow shell 21 as an example for explanation. The two auxiliary slide grooves are arranged in parallel with the slide groove, and the two auxiliary slide grooves are slidably provided with auxiliary sliders, and the two auxiliary sliders are fixedly connected to the hollow shell 21 respectively. The connection structure of the two can be a conventional connection structure such as welding, clamping or plugging. In this way, when the hollow shell 1 moves, the cooperation of the auxiliary slide grooves makes the hollow shell 21 not easy to slide.

[0038] Preferably, the fine-tuning structure also includes two driven gears rotatably mounted on the outer shell, the two driven gears meshing with the two gears one-to-one respectively, and the two driven gears meshing with the corresponding racks respectively, so as to reduce the volume of a single gear and ensure the sliding of the two hollow shells.

[0039] When moving, the knob 33 is turned to rotate the main gear 31, thereby driving the two racks 32 to move relative to each other along the center line of the shell 1, thereby driving the two hollow shells 21 to move relative to each other, that is, the distance between the axes of the two hollow shells 21 becomes closer and closer; correspondingly, the knob 33 is turned in the opposite direction to rotate the main gear 31, thereby driving the two racks 32 to move away from each other along the center line of the shell 1, thereby driving the two hollow shells 21 to move relative to each other along the center line of the shell 1, that is, the distance between the axes of the two hollow shells 21 becomes farther and farther; in this way, it is suitable for testers of different age groups and has strong versatility.

[0040] Furthermore, the utility model also includes a shielding plate, which can be covered or inserted into the inner port of the corresponding hollow shell 21 to shield one of the lens barrel assemblies 1 when in use. Preferably, in order to prevent the undetected eye of the user from being squeezed by the shielding plate during use, the shielding plate can also be installed inside the hollow shell 21 by plugging and unplugging, and is located between the eyepiece lens and the objective lens. The shielding structure of the two hollow shells 21 is the same. Taking one of them as an example for explanation, a strip-shaped notch is opened on the upper side of the hollow shell 21, and the notch is equipped with a sealing plug, and a limiting step is set at the hollow shell 21 corresponding to the notch. The notch is divided into a reduced diameter part and a notch part by the limiting step, and the length of the reduced diameter part is less than the length of the notch part. Correspondingly, the shielding plate and the hollow shell 21 are connected. The interior of the shell 21 is adapted, that is, the upper side of the baffle plate is provided with a plug-in portion adapted to the notch portion; wherein, the upper side edge of the baffle plate is adapted to the sealing plug, so the sealing plug can be inserted into the upper side of the baffle plate when idle, to prevent the sealing plug from being placed randomly and needing to be found; when in use, the baffle plate is inserted into the interior of the hollow shell 21 through the notch until the plug-in portion of the baffle plate abuts against the notch portion, at which time the baffle plate extends into the interior of the hollow shell 21 and contacts and cooperates with the side walls of the hollow shell 21; when pulling out, hold the plug-in portion by hand, take away the baffle plate, and then put in the sealing plug.

[0041] Furthermore, the utility model also includes a control system, which also includes

[0042] MCU, button group and speaker, MCU is set in the control box and installed on the side wall of the shell 1, and the button group is located outside the shell 1. The above-mentioned MCU is bidirectionally connected to the display screen to randomly specify the corresponding pattern of the eye chart on the display screen; each button group corresponds to the buttons of the four directions in the eye chart, and each button group is electrically connected to the signal input end of the MCU. When the user passes the eye chart test, the image indicated by the current display screen is fed back to the MCU through the corresponding button; the signal output end of the MCU is electrically connected to the signal input end of the speaker, so that the judgment result of the MCU is played by voice through the speaker. In addition, the speaker can also be replaced or added with an LED indicator light, so as to make judgments by the color of the LED indicator light; or, the speaker can also be replaced with a determination area added on the display screen, which is a color block, indicating a red block means an error in judgment, and indicating a green block means a correct judgment.

[0043] In this embodiment, the above-mentioned MCU is an existing conventional single-chip microcomputer, such as an Omron single-chip microcomputer, etc. This type of single-chip microcomputer that randomly specifies a pattern and makes a judgment based on feedback is an existing conventional technology, so it will not be described in detail.

[0044] As a preferred method, the above-mentioned button feedback can also be replaced with voice feedback. Specifically, the control system includes an MCU, a voice recognizer, and a speaker installed on the side wall of the housing 1. The voice recognizer can be an existing conventional voice recognizer such as a microphone, which can be held in the hand when in use; wherein the acquisition end of the voice recognizer is electrically connected to the signal input end of the MCU, and the signal output end of the MCU is electrically connected to the speaker. When in use, the MCU randomly specifies the direction of the pattern in the eye chart, and then the user uses the microphone to feedback the direction of the pattern. The MCU receives the voice and recognizes it, and judges whether it is consistent with the specified pattern direction, and then outputs an error or correct signal through the speaker to let the user know, and repeats this process to specify multiple pattern directions to judge the user's vision.

[0045] In addition, the above-mentioned button feedback can also adopt image acquisition feedback, that is, the user's gesture is recognized through a conventional camera device, and the recognition result is fed back to the MCU for the MCU to make a judgment.

[0046] It should be noted that the above-mentioned control system also includes a main switch and a power module, which is used to provide working power to the device. This type of power module is an existing conventional module, so it will not be described in detail; the main switch is installed on the side wall of the shell 1, and the main switch is electrically connected to the signal input terminal of the MCU to control the opening and closing of the entire device.

[0047] Furthermore, the two ends of the headband 6 are respectively arranged on the left and right sides of the housing 1, and the headband 6 is an elastic band, so that the housing 1 is worn on the head through the headband 6. Preferably, the headband 6 can be set as an adjustable band body, and the adjustable band body is a band body that can be purchased on the market, so it is not described in detail.

[0048] The utility model discloses a head-mounted eye detection device, and the specific detection process is as follows: taking the detection of the right eye as an example, the user first inserts a shielding plate into the hollow shell 21 on the left side, that is, covers the left eye, and then the user wears the shell 1 on the head through the headband 6, and makes the user's right eye face the inner port of the hollow shell 21 on the right side, and the left eye face the inner port of the hollow shell 21 on the left side, and then the MCU randomly specifies the pattern of the eye chart on the display screen, and the user presses a button in the button group according to the direction of the pattern viewed, and the MCU makes a judgment and plays the result through the speaker, and then the MCU randomly specifies again, and repeats this several times to obtain the vision test result; similarly, the left eye detection is the same as the above process, so it will not be described in detail.

[0049] The above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the claims of the present utility model shall fall within the scope of the claims of the present utility model.

Claims

1. A head-mounted eye detection device, characterized in that: The invention comprises a shell, a headband connected to the shell, a display assembly installed on the outer side of the shell, and two lens barrel assemblies arranged side by side; the two lens barrel assemblies comprise a hollow shell with openings at both ends and an eyepiece lens and an objective lens arranged in the hollow shell from the inside to the outside in sequence, and the two hollow shells are respectively installed in the shell in a manner of moving back to back or towards each other through a fine-tuning structure; the fine-tuning structure comprises a main gear and two oppositely arranged racks, the two racks are respectively meshed with the main gear, the two racks are respectively installed in the shell in a manner of being able to slide, and the two racks are respectively fixedly matched with the two hollow shells in a one-to-one manner.

2. A head-mounted eye detection device according to claim 1, characterized in that: Two slide grooves are arranged in the shell, and sliders are slidably arranged in the two slide grooves respectively, and the two sliders are fixedly connected to the two racks in a one-to-one manner.

3. A head-mounted eye detection device according to claim 2, characterized in that: A fixing hole is opened in the middle of the inner side of the shell, and a rotating shaft is rotatably installed in the fixing hole. One end of the rotating shaft is connected to the main gear, and the other end of the rotating shaft is connected to a knob.

4. A head-mounted eye detection device according to claim 3, characterized in that: A concave cavity is provided in the middle of the inner side of the shell, the concave cavity is coaxially arranged with the fixing hole, and the concave cavity and the fixing hole are communicated with each other, and the knob is rotatably installed in the concave cavity.

5. A head-mounted eye detection device according to any one of claims 1 to 4, characterized in that: Each of the hollow shells is respectively provided with an auxiliary slide groove. In each of the hollow shells, each of the auxiliary slide grooves is arranged side by side with the rack. Each of the auxiliary slide grooves is respectively slidably provided with an auxiliary slider, and each of the auxiliary sliders is respectively fixedly connected to the corresponding hollow shell.

6. A head-mounted eye detection device according to claim 5, characterized in that: Two through holes 1 are provided on the outer side of the shell, and the two through holes 1 are respectively arranged one-to-one with the two lens barrel assemblies; two through holes 2 are provided on the inner side of the shell, and the two through holes 2 correspond to the two through holes 1 respectively; wherein the outer ends of the two hollow shells are respectively located in the through holes 1, and the inner ends of the two hollow shells protrude from the corresponding through holes 2.

7. A head-mounted eye detection device according to claim 6, characterized in that: The inner side surface of the shell is an arc-shaped surface that bends inward in a direction away from the center line with its center line as the base point, and the outer side surface of the hollow shell is the reference plane. The left and right sides of the inner side of the hollow shell are higher than the middle position, and the inner side edge of the hollow shell protrudes inward to form an inner flange.

8. The head-mounted eye detection device according to claim 7, characterized in that: It also includes a baffle plate, which is installed at the inner port of the hollow shell in a detachable manner; or, slots are respectively opened on the two hollow shells, and the two slots are respectively equipped with sealing plugs, and the baffle plate is installed inside the hollow shell through the slots in a pluggable manner.

9. The head-mounted eye detection device according to claim 8, characterized in that: The display assembly comprises a mounting cover and a display screen for displaying a visual acuity chart. The mounting cover is mounted on the outer side of the housing, and the display screen is mounted on the mounting cover.

10. The head-mounted eye detection device according to claim 9, characterized in that: It also includes a control system, which includes an MCU, a button group and a speaker, the MCU is arranged in a control box, the control box is installed on the side wall of the shell, and the button group is located outside the shell; each of the button groups corresponds to the buttons of the four directions in the eye chart; wherein the MCU is bidirectionally connected to the display screen to randomly specify the corresponding pattern of the eye chart in the display screen; each of the button groups is electrically connected to the signal input end of the MCU to feed back the pattern direction indicated by the current display screen to the MCU through the corresponding button; the signal output end of the MCU is electrically connected to the signal input end of the speaker to play the judgment result through the speaker.

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