Adjustable video acquisition device of portable nystagmus view instrument

Abstract

The utility model discloses an adjustable video acquisition device of a portable nystagmus view instrument, which comprises a shell A, three threaded holes in the outer wall of the shell A are respectively provided with a focal length adjusting knob, a horizontal direction angle adjusting knob and a vertical direction angle adjusting knob; the support frame is arranged in the shell A; the supporting table is arranged on the supporting frame, and a cylindrical convex rod on the supporting table is inserted into a round hole in the center of the supporting frame; the camera module mainboard is clamped on the supporting table; the module mainboard base is inserted into the camera module mainboard; the optical filter is arranged on the central hole in the module mainboard base; the lens base is inserted into the module mainboard base, an inner dustproof and anti-light ring on the lens base is assembled in an outer dustproof and anti-light ring in the center of the module mainboard base, and meanwhile the two ends of the lens base are connected with the two ends of the supporting frame.

Description

Technical Field

[0001] The utility model relates to the technical field of nystagmus imaging instruments, in particular to an adjustable video acquisition device of a portable nystagmus imaging instrument. Background Art

[0002] When undergoing a nystagmus examination, the patient needs to wear a head-mounted nystagmus examination device. The video acquisition device is an indispensable and important component of the nystagmus examination device. Because patients have different characteristics such as forehead width, pupil distance, and eye convexity, the video acquisition device on the nystagmus examination device needs to be adjustable, that is, the focal length and angle of the video acquisition device can be conveniently and quickly matched and adjusted according to different wearing patients, so that the video acquisition device can capture the area accurately and the image is clear (i.e., manual video calibration). Because the nystagmus examination first requires adjusting the video acquisition device and manually performing the video calibration operation, so that the infrared camera can accurately lock the position of the patient's pupil fovea, the software can accurately calibrate the patient's eyeball, thereby improving the recognition of nystagmus. resolution, thereby improving the accuracy and credibility of the nystagmus image examination results; if the angle and focal length of the video acquisition device cannot be adjusted or one of them cannot be adjusted, it will greatly affect the accuracy and credibility of the nystagmus image examination results. If the focal length of the video acquisition device cannot be adjusted, the imaging may be blurred, unclear, deformed, etc., which will affect the software's recognition rate of nystagmus, thereby affecting the authenticity and accuracy of the nystagmus examination results. If the angle of the video acquisition device cannot be adjusted, the imaging may be incomplete, the position to be collected may be incorrect, etc., which will also affect the software's judgment of nystagmus, thereby affecting the authenticity and accuracy of the nystagmus examination results. In short, these two situations will lead to misdiagnosis and missed diagnosis to a certain extent. Another thing is that the adjustment of the focus and angle of the video acquisition device needs to be convenient and quick, because manual video calibration before performing nystagmus imaging examination often requires multiple adjustments to the focus and angle of the camera. If the nystagmus imaging examination device worn by the patient or the light shield (hood) is removed for each adjustment, and then put on again after adjustment, and this is repeated multiple times, this will greatly increase the patient's anxiety and tension, make the patient's test state unnatural, and affect the authenticity of the examination results. Utility Model Content

[0003] In view of the above technical problems, the utility model provides an adjustable video acquisition device for a portable nystagmus imager.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0005] An adjustable video acquisition device for a portable nystagmography apparatus, comprising:

[0006] The three threaded holes on the outer wall of the housing A are respectively provided with a focus adjustment knob, a horizontal angle adjustment knob, and a vertical angle adjustment knob;

[0007] A support frame is provided in the housing A;

[0008] The support platform is arranged on the support frame, and the cylindrical protruding rod on the support platform is inserted into the circular hole at the center of the support frame;

[0009] The camera module mainboard is snapped onto the support platform;

[0010] The module mainboard base is plugged into the camera module mainboard;

[0011] The filter is set on the center hole on the base of the module mainboard;

[0012] The lens base is plugged into the module mainboard base, and the inner dust and aperture ring on it is assembled into the outer dust and aperture ring in the center of the module mainboard base. At the same time, the two ends of the lens base are connected to the two ends of the support frame;

[0013] The LED light circuit board has one side corresponding to the lens base, and the other side is pressed against the center hole of the shell B by an adjustable spring. The cable terminals on it are connected to the cable of the camera module mainboard. The shell B and shell A are buckled together to form a box body;

[0014] The lens is set on the center hole of the shell B, and passes through the center hole of the shell B, the adjustment spring and the center hole of the LED lamp circuit board in sequence, and is threadedly installed on the lens base;

[0015] Infrared fill light A, infrared fill light B and fixation suppression light are arranged on the outer wall of the housing B and are respectively connected to the LED light circuit board;

[0016] One end of the cable passes through the housing B and connects to the camera module mainboard, while the other end connects to the external display interactive device and the battery respectively;

[0017] Among them, the focal length adjustment knob, the horizontal angle adjustment knob and the vertical angle adjustment knob are all provided with limit springs; the focal length adjustment knob passes through the circular hole at the center of the support frame and is pressed against the corresponding conical arc groove on the cylindrical protrusion of the support platform; the end of the horizontal angle adjustment knob is pressed against the horizontal edge of the support frame; the end of the vertical angle adjustment knob is pressed against the vertical edge of the support frame.

[0018] The beneficial effects of the utility model are:

[0019] 1. The present invention effectively solves the problem of either the focus or the angle of a video acquisition device being unable to be adjusted, or both being unable to be adjusted, during nystagmus imaging examinations. Its operating principle is as follows: the entire camera module and lens are designed as a single unit, with an adjustment spring installed at the front end and an adjustment knob installed at the rear end. Adjustment of the adjustment knob causes the front end spring to contract, expand, and rebound, thereby achieving vertical forward and backward movement (focal length adjustment) and unilateral forward and backward movement (angle adjustment) of the camera as a whole, thereby achieving focal length and angle adjustment of the camera (video acquisition device).

[0020] 2. The present invention can ensure that the positions of the infrared fill light and the fixation suppression light remain constant when the camera's focus or angle is adjusted. That is, the infrared fill light and the fixation suppression light do not change with the camera's focus or angle adjustment. This ensures that the light spot of the fixation suppression light is always located directly in front of the patient's field of view, effectively suppressing nystagmus that requires fixation suppression. In addition, the constant position of the infrared fill light ensures that a fixed area of ​​the patient's eye is illuminated in a dark visual environment. This fixed area is the optimal area for the software to identify the patient's eyes and is also the optimal area for the doctor to observe the patient's eye movements, ensuring that the nystagmus captured and recorded by the camera is clear and realistic.

[0021] 3. The present invention can conveniently and quickly adjust the focus and angle of the video acquisition device. A focus adjustment knob, a vertical angle adjustment knob, and a horizontal angle adjustment knob are designed in a conspicuous position on the housing of the video acquisition device. The focus or angle can be adjusted by gently turning the knob. The adjustment effect can be synchronously displayed in real time on the display screen connected to the camera. During the entire adjustment process, the patient will not feel anything, and there will be no contact with the patient's body. There is no need to repeatedly take off and put on the nystagmography device or the light shield (hood), which will not cause tension or anxiety to the patient.

[0022] 4. The utility model has a simple overall structure, controllable cost, and is an independent entity. It can be made into a standard kit to match similar nystagmus machines (both portable and traditional nystagmus machines) and can be used as a standard component of similar nystagmus machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 It is an exploded view of the utility model;

[0025] Figure 2 It is a three-dimensional diagram of the utility model; DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0027] like Figure 1 and Figure 2 As shown, an adjustable video acquisition device for a portable nystagmography device,

[0028] The outer shell A305 has three threaded holes on its outer wall, respectively provided with a focus adjustment knob 301, a horizontal angle adjustment knob 302 and a vertical angle adjustment knob 303; a support frame 306 is provided in the outer shell A305; a support platform 307 is provided on the support frame 306, and a cylindrical protrusion on the support frame 306 is inserted into the circular hole at the center of the support frame 306; a camera module mainboard 308 is clamped on the support platform 307; a module mainboard base 309 is plugged into the camera module mainboard 308; a filter 310 is provided on the bottom of the module mainboard The center hole of the base 309; the lens base 311 is plugged into the module mainboard base 309, and the inner dustproof and anti-aperture ring thereon is assembled into the outer dustproof and anti-aperture ring in the center of the module mainboard base 309. At the same time, the two ends of the lens base 311 are connected to the two ends of the support frame 306; the LED light circuit board 312, one side corresponds to the lens base 311, and the other side is pressed on the center hole of the shell B315 through the adjustment spring 314, and the cable terminal on it is connected to the cable of the camera module mainboard 308, wherein the shell B315 is connected to the shell A3 05 are buckled together to form a box body; the lens 316 is set on the center hole of the shell B315, and passes through the center hole of the shell B315, the adjustment spring 314 and the center hole of the LED light circuit board 312 in sequence, and is screwed on the lens base 311; the infrared fill light A317, the infrared fill light B318 and the fixation suppression light 319 are set on the outer wall of the shell B315, and are respectively connected to the LED light circuit board 312; the cable 313 has one end passing through the shell B315 and connected to the camera module mainboard 308, and the other end is divided into They are respectively connected to the external display interactive device and the battery 115; wherein, the focus adjustment knob 301, the horizontal angle adjustment knob 302 and the vertical angle adjustment knob 303 are all provided with a limit spring 304; the focus adjustment knob 301 passes through the circular hole at the center of the support frame 306 and is pressed against the corresponding conical arc groove on the cylindrical protrusion of the support platform 307; the end of the horizontal angle adjustment knob 302 is pressed against the horizontal edge of the support frame 306; the end of the vertical angle adjustment knob 303 is pressed against the vertical edge of the support frame 306.

[0029] When the utility model is in use:

[0030] 1. There are three threaded holes on the front of the housing A305. Insert the focus adjustment knob 301 (labeled F), the horizontal angle adjustment knob 302 (labeled H), and the vertical angle adjustment knob 303 (labeled V) into the corresponding three threaded holes on the housing A305 as shown. Install the upper limit retaining spring 304 on the inner side of the housing A305 at the retaining spring installation locations at the ends of the three knobs.

[0031] 2. Install the hook-shaped buckles on the left and right sides of the back of the support platform 307 into the corresponding positions on the camera module mainboard 308 as shown in the figure, and insert the cylindrical protrusion on the front of the support platform 307 through the circular hole in the center of the support frame 306;

[0032] 3. Insert the two through-axis positioning pins on the front of the module motherboard base 309 into the corresponding round holes on the camera module motherboard 308 as shown in the figure. The ends of the positioning pins will automatically press against the inner side of the support frame, and the sensor on the camera module motherboard 308 will be exactly aligned with the center of the module motherboard base 309;

[0033] 4. If the filter 310 is installed into the corresponding mounting slot on the back of the module mainboard base 309 as shown, the sensor on the camera module mainboard 308 will be aligned with the filter 310;

[0034] 5. Insert the two through-axis positioning pins on the back of the module motherboard base 309 into the corresponding blind holes on the lens base 311 as shown. At this time, the inner dust and aperture ring on the lens base 311 will fit neatly into the outer dust and aperture ring in the middle of the motherboard base 309.

[0035] 6. Assemble and connect the support frame 306 and the lens base 311 with screws as shown in the figure. At this time, the support frame 306, support platform 307, camera module mainboard 308, module mainboard base 309, filter 310 and lens base 311 form a whole;

[0036] 7. As shown in the figure, pass the adjustment spring 314 through the protruding cylinder (nut) at the center of the back of the lens base 311, and press the end of the adjustment spring against the lens base;

[0037] 8. Install the LED light circuit board 312 onto the housing B315 as shown, and connect the cable on the camera module mainboard 308 to the cable terminals on the LED light circuit board 312;

[0038] 9. Assemble the housing B315 and the housing A305. The other end of the adjustment spring 314 will pass through the round hole on the LED circuit board 312 of the housing B315 and press against the inner side of the housing B315. The entire linkage device is now formed.

[0039] 9. As shown in the figure, pass the mounting end of the lens 316 through the circular hole in the housing B315 and the adjustment spring 314 and LED circuit board 312 inside. Then, turn the lens 316 clockwise until it is firmly seated on the lens base 311. This means that the end of the mounting end of the lens 316 is in close contact with the mounting step set on the module motherboard base 309.

[0040] 10. When the outer shell B315 and the outer shell A305 are assembled, rotate the focus adjustment knob 301 on the outer shell A305 clockwise. The end of the focus adjustment knob 301 will automatically press against the corresponding conical arc groove on the cylindrical protrusion on the front of the support platform 307. Continue to rotate the focus adjustment knob 301 clockwise and the adjustment spring 314 will shrink vertically. Because the entire camera module and the lens are an independent whole (referred to as the camera whole) at this time, the vertical shrinkage of the adjustment spring 314 will push the entire camera forward to increase the focal length. Rotating the focus adjustment knob 301 counterclockwise will cause the adjustment spring 314 to expand and rebound vertically, thereby causing the entire camera to move backward to reduce the focal length.

[0041] Rotate the horizontal angle adjustment knob 302 on the housing A305 clockwise, and the end of the horizontal angle adjustment knob 302 will automatically press against the center of the horizontal edge of the support frame 306. Continue to rotate the horizontal angle adjustment knob 302 clockwise. At this time, the adjustment spring 314 will only contract or expand to one side, and the other side will change very little, thereby adjusting the camera angle. Because the contraction or expansion and rebound side of the adjustment spring 314 are now located in the horizontal direction of the entire camera (relative to the position where the camera is installed on the nystagmus imager), the horizontal angle of the camera can be adjusted. Specifically, rotating the horizontal angle adjustment knob 302 clockwise increases the angle, and rotating it counterclockwise decreases the angle.

[0042] Rotate the vertical angle adjustment knob 303 on the housing A305 clockwise. The end of the vertical angle adjustment knob 303 will automatically press against the center of the vertical edge of the support frame 306. Continue to rotate the vertical angle adjustment knob 303 clockwise. At this time, the adjustment spring 314 will only contract or expand to one side, and the other side will change very little, thereby adjusting the camera angle. Because the contraction or expansion and rebound side of the adjustment spring 314 are now located in the vertical direction of the entire camera (relative to the position where the camera is installed on the nystagmus imager), the vertical angle of the camera can be adjusted. Specifically, rotating the vertical angle adjustment knob 303 clockwise increases the angle, and rotating the vertical angle adjustment knob 303 counterclockwise decreases the angle.

[0043] 11. The LED light circuit board 312 is provided with an infrared fill light A317, an infrared fill light B318 and a fixation suppression light 319. This is because the LED light circuit board 312 is an independent part relative to the entire camera, that is, the LED light circuit board 312 is not linked to the entire camera and its position does not change with the adjustment of the camera focal length or angle. Therefore, it can ensure that the positions of the infrared fill light A317, the infrared fill light B318 and the fixation suppression light 319 relative to the patient's field of view are constant.

[0044] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims, or equivalents thereof.

Claims

1. An adjustable video acquisition device for a portable nystagmography apparatus, characterized in that: include: The housing A (305) has three threaded holes on its outer wall, each of which is provided with a focus adjustment knob (301), a horizontal angle adjustment knob (302), and a vertical angle adjustment knob (303); A support frame (306) is disposed in the housing A (305); A support platform (307) is provided on the support frame (306), and a cylindrical protruding rod on the support platform (307) is inserted into a circular hole at the center of the support frame (306); The camera module mainboard (308) is clamped on the support platform (307); The module mainboard base (309) is plugged into the camera module mainboard (308); A filter (310) is provided on a central hole on the module mainboard base (309); The lens base (311) is plugged into the module mainboard base (309), and the inner dustproof and anti-aperture ring on the lens base (311) is assembled into the outer dustproof and anti-aperture ring in the center of the module mainboard base (309). At the same time, the two ends of the lens base (311) are connected to the two ends of the support frame (306); The LED light circuit board (312) has one side corresponding to the lens base (311) and the other side pressed against the center hole of the housing B (315) through the adjustment spring (314). The wiring terminals on the LED light circuit board (312) are connected to the wiring of the camera module mainboard (308). The housing B (315) and the housing A (305) are buckled together to form a box body. The lens (316) is arranged on the center hole of the housing B (315), and is threadedly mounted on the lens base (311) after passing through the center hole of the housing B (315), the adjustment spring (314), and the center hole of the LED lamp circuit board (312) in sequence; Infrared fill light A (317), infrared fill light B (318) and fixation suppression light (319) are arranged on the outer wall of housing B (315) and are respectively connected to the LED light circuit board (312); A flat cable (313), one end of which passes through the housing B (315) and is connected to the camera module mainboard (308), and the other end of which is respectively connected to the external display interactive device and the battery (115); The focus adjustment knob (301) passes through the circular hole at the center of the support frame (306) and is pressed against the corresponding conical arc groove on the cylindrical protruding rod of the support platform (307); the end of the horizontal angle adjustment knob (302) is pressed against the horizontal edge of the support frame (306); and the end of the vertical angle adjustment knob (303) is pressed against the vertical edge of the support frame (306).

2. The adjustable video acquisition device of a portable nystagmography device according to claim 1, characterized in that: The focal length adjustment knob (301), the horizontal direction angle adjustment knob (302) and the vertical direction angle adjustment knob (303) are all provided with a limit spring (304).

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