Vertical visual angle measuring device of medical image diagnosis display system

Abstract

The utility model provides a medical image diagnosis display system vertical visual angle measuring device, which comprises a display placing unit and a brightness meter clamping adjusting unit, and the brightness meter clamping adjusting unit comprises a second support frame, a lifting mechanism, a lifting plate, an inverted T-shaped support, an angle index plate device, a rotating arm, a transverse moving arm, a clamping sleeve and a brightness meter. The rotation center of the angle index plate device is adjusted to the central position of the up-down height of the display screen through the lifting mechanism, the brightness meter is moved to the central position of the left-right width of the display screen by moving the position of the clamping sleeve on the transverse moving arm, and then the brightness meter is sequentially adjusted to different set angles through the angle index plate device. And measuring the vertical visual angle. The device adopts a mode of moving the brightness meter, and is small in driving load, high in long-term stability of the device structure, simple and compact in structure, small in occupied space and low in manufacturing cost. And the vertical visual angle measurement requirements of displays with different models and sizes can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of display system detection, in particular to a device for measuring the vertical viewing angle of a medical imaging diagnosis display system. Background Art

[0002] In the medical imaging department, monitors have replaced film as the main tool for imaging diagnosis. Monitors represented by LCD screens constitute the current mainstream medical imaging diagnosis display system, and their quality directly affects the results and efficiency of imaging diagnosis. In 2019, the State Administration for Market Regulation issued the "JJF1746-2019 Calibration Specification for Medical Imaging Diagnosis Display System", which provides a formal basis for the calibration of key performance parameters of medical imaging diagnosis display systems and provides a metrological test method for the quality control of such medical equipment. This specification mainly involves metrological parameters such as display brightness, chromaticity and viewing angle. The definition of the viewing angle parameter is: vertically aligned with the center of the image display screen, as the observation angle increases, the angle included when the brightness ratio drops to 10 is called the viewing angle.

[0003] For the measurement of viewing angle, display equipment manufacturers generally use fixed optical inspection equipment during the manufacturing process. The inspected display equipment is grabbed and rotated to the set angle using a multi-axis manipulator. The existing equipment is expensive; the display equipment steering operation takes up a lot of space; different clamping mechanisms and operating procedures need to be configured for different types or models of display measurement and inspection, which is inconvenient to operate. Utility Model Content

[0004] The purpose of the utility model is to provide a device for measuring the vertical viewing angle of a medical imaging diagnosis display system in view of the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The utility model provides a device for measuring the vertical viewing angle of a medical imaging diagnosis display system, comprising:

[0007] A display placement unit, comprising a first support frame and a placement table, wherein the placement table is installed on the top of the first support frame, and the display to be detected is placed on the placement table;

[0008] The brightness meter clamping and adjusting unit comprises a second supporting frame, a lifting mechanism, a lifting plate, an inverted T-shaped bracket, an angle dividing disk device, a rotating arm, a transverse arm, a jacket and a brightness meter, wherein the lifting mechanism is vertically mounted on the second supporting frame, the lifting plate is connected to the slider of the lifting mechanism, the inverted T-shaped bracket is fixedly connected to the lifting plate, the base of the angle dividing disk device is fixedly mounted on the inverted T-shaped bracket, the rotation axis of the angle dividing disk device is horizontally arranged, the rotating arm is connected to the rotating disk of the angle dividing disk device, one end of the transverse arm is connected to the end of the rotating arm, the length direction of the transverse arm is perpendicular to the length direction of the rotating arm, the jacket can be translationally mounted on the transverse arm, and the brightness meter is mounted on the jacket.

[0009] By adopting the technical solution of the utility model, during testing, the display to be tested is placed on the placement table. It is only necessary to adjust the rotation center of the angle dividing plate device to the center position of the upper and lower height of the display screen through the lifting mechanism according to the size of the display to be tested, and move the brightness meter to the center position of the left and right width of the display screen by moving the position of the clamp on the transverse arm. Then, the brightness meter is adjusted to different set angles in turn through the angle dividing plate device to measure the vertical viewing angle. The device adopts a mobile brightness meter, which has a small driving load, high long-term stability of the device structure, simple and compact structure, small space occupation, and low manufacturing cost. For displays of different models and sizes, after measuring the screen size, manually adjust the brightness meter to the center of the display screen to measure, which is easy to operate and highly applicable.

[0010] Furthermore, the lifting mechanism includes a lifting frame, a linear guide and a lead screw. The lifting frame is installed above the first support frame, the linear guide is vertically installed on the lifting frame, the lead screw is arranged parallel to the linear guide, and the slider of the linear guide is connected to the nut of the lead screw; the lifting frame is also provided with a scale for indicating the height difference between the rotation center of the angle dividing plate device and the surface of the placement table.

[0011] By adopting the above preferred solution, the structure has high stability and is convenient for accurately adjusting the height position of the rotation center of the angle dividing plate device.

[0012] Furthermore, it also includes an adapter plate, which is connected between the turntable of the angle dividing plate device and the rotating arm, and the adapter plate is provided with a bolt connecting hole. The adapter plate is connected to the turntable of the angle dividing plate device by bolts passing through the bolt connecting hole, and an inwardly concave rectangular groove is provided on the end surface of the adapter plate; the end of the rotating arm connected to the adapter plate is provided with a rectangular protrusion, the rectangular protrusion is embedded in the rectangular groove, and the rectangular protrusion is locked to the adapter plate by screws.

[0013] By adopting the above preferred solution, the reliability of the connection between the rotating arm and the rotating disk of the angle indexing disk device is improved.

[0014] Furthermore, the rotating arm includes a first arm plate and a second arm plate arranged in parallel and spaced apart, and a vertical connecting plate is provided at the end of the rotating arm connected to the transverse arm, one end of the first arm plate and the second arm plate is connected to the rectangular protrusion, and the other end of the first arm plate and the second arm plate is connected to the vertical connecting plate.

[0015] The above preferred solution is adopted to take into account both the lightweight of the rotating arm and the ensuring of the structural strength.

[0016] Furthermore, a first reinforcing sub-plate is provided at a connection between the first arm plate and the vertical connecting plate, and a second reinforcing sub-plate is provided at a connection between the second arm plate and the vertical connecting plate.

[0017] Furthermore, the upper end of the vertical connecting plate is provided with an upper clamping edge extending horizontally backward, and the upper clamping edge matches the upper surface of the transverse arm. The lower end of the vertical connecting plate is provided with a lower clamping edge extending horizontally backward, and the lower clamping edge matches the lower surface of the transverse arm.

[0018] By adopting the above preferred solution, the connection strength between the rotating arm and the transverse arm is strengthened, ensuring that a more precise verticality is maintained between the rotating arm and the transverse arm.

[0019] Furthermore, the sleeve includes a sliding guide portion located at the rear end and a first clamping portion and a second clamping portion located at the front end and opposite to each other. The sliding guide portion is provided with a rectangular hole, and the rectangular hole matches the outer contour of the transverse arm. The luminance meter is clamped between the first clamping portion and the second clamping portion.

[0020] Furthermore, a wiring groove penetrating vertically is provided in the middle of the first clamping portion and / or the second clamping portion.

[0021] The above preferred solution is adopted to facilitate the clamping and displacement adjustment of the luminance meter.

[0022] Furthermore, the transverse arm has a T-shaped slot opening toward the rear side in its cross section.

[0023] The above preferred solution is adopted to take into account both the lightweight of the transverse arm and the ensuring of the structural strength.

[0024] Furthermore, it also includes a jacket locking screw, a threaded connection hole is provided on the rear side wall of the jacket sliding guide part, the jacket locking screw is connected to the threaded connection hole, and the head end of the jacket locking screw rests on the bottom surface of the T-slot of the transverse arm.

[0025] The above preferred solution is adopted to facilitate the quick locking operation after the jacket is moved to the target position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is one of the structural schematic diagrams of an implementation method of the utility model.

[0028] Figure 2 This is the second structural schematic diagram of an implementation method of the utility model.

[0029] Figure 3 It is a cross-sectional view of an implementation manner of the utility model.

[0030] Figure 4 It is one of the structural schematic diagrams of an implementation method of an angle indexing disk device.

[0031] Figure 5 This is the second structural schematic diagram of an implementation method of the angle indexing plate device.

[0032] Figure 6 It is one of the structural schematic diagrams of an implementation method of a rotating arm and a transverse arm.

[0033] Figure 7 This is the second structural schematic diagram of an implementation method of a rotating arm and a transverse arm.

[0034] Figure 8 This is the third structural schematic diagram of an implementation method of a rotating arm and a transverse arm.

[0035] Fig. 9 It is a schematic structural diagram of an implementation method of a jacket.

[0036] Reference numerals:

[0037] 10-display placement unit; 11-first support frame; 12-placement table; 20-brightness meter clamping adjustment unit; 21-second support frame; 22-lifting mechanism; 221-lifting frame; 222-linear guide rail; 223-screw; 224-ruler; 23-lifting plate; 24-inverted T-shaped bracket; 25-angle indexing plate device; 251-turntable; 252-base; 26-rotating arm; 261-rectangular protrusion; 262-first arm plate; 26 3-second arm plate; 264-vertical connecting plate; 265-first reinforcing sub-plate; 266-second reinforcing sub-plate; 267-upper clamping edge; 268-lower clamping edge; 27-transverse arm; 271-T-slot; 28-jacket; 281-first clamping part; 282-second clamping part; 283-sliding guide part; 284-rectangular hole; 285-wiring groove; 286-threaded connection hole; 29-adapter plate; 291-bolt connection hole; 292-rectangular groove. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] like Figure 1-9 As shown, in one embodiment of the present utility model, a device for measuring vertical viewing angle of a medical imaging diagnosis display system includes:

[0044] A display placement unit 10, comprising a first support frame 11 and a placement table 12, wherein the placement table 12 is mounted on the top of the first support frame 11, and a display to be tested is placed on the placement table 12;

[0045] The brightness meter clamping and adjusting unit 20 includes a second supporting frame 21, a lifting mechanism 22, a lifting plate 23, an inverted T-shaped bracket 24, an angle dividing plate device 25, a rotating arm 26, a transverse arm 27, a jacket 28 and a brightness meter. The lifting mechanism 22 is vertically installed on the second supporting frame 21, the lifting plate 23 is connected to the slider of the lifting mechanism 22, the inverted T-shaped bracket 24 is fixedly connected to the lifting plate 23, the base of the angle dividing plate device 25 is fixedly installed on the inverted T-shaped bracket 24, the rotation axis of the angle dividing plate device 25 is horizontally arranged, the rotating arm 26 is connected to the turntable 251 of the angle dividing plate device 25, one end of the transverse arm 27 is connected to the end of the rotating arm 26, the length direction of the transverse arm 27 is perpendicular to the length direction of the rotating arm 26, the jacket 28 can be translationally installed on the transverse arm 27, and the brightness meter is installed on the jacket 28.

[0046] The beneficial effects of adopting the above technical solution are: during testing, the display to be tested is placed on the placement table. It is only necessary to adjust the rotation center of the angle dividing plate device to the center position of the upper and lower height of the display screen through the lifting mechanism according to the size of the display to be tested, and move the brightness meter to the center position of the left and right width of the display screen by moving the position of the clamp on the transverse arm. Then, the brightness meter is adjusted to different set angles in turn through the angle dividing plate device to measure the vertical viewing angle. This device adopts a mobile brightness meter, which has a small driving load, high long-term stability of the device structure, simple and compact structure, small space occupation, and low manufacturing cost. For displays of different models and sizes, after measuring the screen size, manually adjust the brightness meter to the center of the display screen to measure. It is easy to operate and has high applicability.

[0047] like Figure 1-3 As shown, in some other embodiments of the utility model, the lifting mechanism 22 includes a lifting frame 221, a linear guide rail 222 and a lead screw 223. The lifting frame 221 is installed above the first support frame 11, the linear guide rail 222 is vertically installed on the lifting frame 221, the lead screw 223 is arranged in parallel with the linear guide rail 222, and the slider of the linear guide rail 222 is connected to the nut of the lead screw 223; the lifting frame 221 is also provided with a scale 224 for indicating the height difference between the rotation center of the angle indexing disk device 25 and the surface of the placement table 12. The beneficial effects of adopting the above technical solution are: high structural stability, convenient and accurate adjustment of the height position of the rotation center of the angle indexing disk device.

[0048] In the present invention, the specific structure of the angle indexing disk device is not limited and can be obtained from the prior art. Figure 4 , 5 As shown, generally, the angle indexing disk device 25 includes a base 252, a turntable 251 and an angle adjustment mechanism for adjusting the rotation of the turntable relative to the base, and an angle mark is also provided between the turntable and the base to indicate the rotation angle of the turntable relative to the base.

[0049] like Figure 4-7 As shown, in some other embodiments of the utility model, an adapter plate 29 is also included, and the adapter plate 29 is connected between the turntable 251 of the angle indexing disk device and the rotating arm 26. The adapter plate 29 is provided with a bolt connection hole 291, and the adapter plate 29 is connected to the turntable 251 of the angle indexing disk device 25 by bolts passing through the bolt connection hole 291. The end surface of the adapter plate 29 is provided with a concave rectangular groove 292; the end of the rotating arm 26 connected to the adapter plate is provided with a rectangular protrusion 261, and the rectangular protrusion 261 is embedded in the rectangular groove 292, and the rectangular protrusion 261 is locked with the adapter plate 29 by screws. The beneficial effect of adopting the above technical solution is: improving the reliability of the connection between the rotating arm and the turntable of the angle indexing disk device.

[0050] like Figure 6 As shown, in other embodiments of the present invention, the rotating arm 26 includes a first arm plate 262 and a second arm plate 263 arranged in parallel and spaced apart, a vertical connecting plate 264 is provided at the end of the rotating arm 26 connected to the transverse arm 27, one end of the first arm plate 262 and the second arm plate 263 are connected to the rectangular protrusion 261, and the other end of the first arm plate 262 and the second arm plate 263 are connected to the vertical connecting plate 264. The beneficial effect of adopting the above technical solution is: taking into account both the lightweight of the rotating arm and the assurance of the structural strength.

[0051] like Figure 6 As shown, in some other embodiments of the utility model, a first reinforcing sub-plate 265 is provided at the connection between the first arm plate 262 and the vertical connecting plate 264, and a second reinforcing sub-plate 266 is provided at the connection between the second arm plate 263 and the vertical connecting plate 264. An upper clamping edge 267 extending horizontally backward is provided at the upper end of the vertical connecting plate 264, and the upper clamping edge 267 matches the upper surface of the transverse arm 27, and a lower clamping edge 268 extending horizontally backward is provided at the lower end of the vertical connecting plate 264, and the lower clamping edge 268 matches the lower surface of the transverse arm 27. The beneficial effect of adopting the above technical solution is: the connection strength between the rotating arm and the transverse arm is strengthened, and a more accurate verticality is ensured between the rotating arm and the transverse arm.

[0052] like Figure 6-9 As shown, in some other embodiments of the utility model, the jacket 28 includes a sliding guide portion 283 located at the rear end and a first clamping portion 281 and a second clamping portion 282 located at the front end and arranged opposite to each other. The sliding guide portion 283 is provided with a rectangular hole 284, and the rectangular hole 284 matches the outer contour of the transverse arm 27. The brightness meter is clamped between the first clamping portion 281 and the second clamping portion 282. A wiring groove 285 is provided in the middle of the first clamping portion 281 and runs through from top to bottom. The beneficial effect of adopting the above technical solution is that it is convenient to clamp and shift the brightness meter.

[0053] like Figure 8 As shown, in some other embodiments of the present invention, the transverse arm 27 has a T-shaped slot 271 opening toward the rear side on its cross section. The beneficial effect of adopting the above technical solution is: taking into account both the lightness of the transverse arm and the assurance of the structural strength.

[0054] like Figure 8 As shown, in some other embodiments of the present invention, a jacket locking screw is further included, a threaded connection hole 286 is provided on the rear side wall of the sliding guide portion 283 of the jacket, the jacket locking screw is connected to the threaded connection hole 286, and the head end of the jacket locking screw abuts against the bottom surface of the transverse arm T-slot 271. The beneficial effect of adopting the above technical solution is that it facilitates the quick locking operation of the jacket after it is moved to the target position.

[0055] The following is an introduction to the specific measurement steps in conjunction with an implementation method of the present invention:

[0056] During the test, place the display to be tested on the placement table, adjust the rotation center of the angle dividing plate device to the center position of the upper and lower height of the display screen through the lifting mechanism, and move the brightness meter to the center position of the left and right width of the display screen by moving the position of the clamp on the horizontal arm. Set the brightness value of the display to 60% of the maximum brightness value. Align the brightness meter vertically to the center of the screen as the starting position, recorded as 0°. The brightness meter deflects from the starting position with the center of the display screen as the center of the circle. The brightness meter will record a set of data every 1° during this process. During the rotation process, the brightness meter is always aligned with the center of the screen. At each sampling point, the display displays white field and black field images (such as the 255th and 0th order images in a 256-grayscale image) in turn. After each test image is stable, record the corresponding brightness measurement values ​​respectively. At each angle in the vertical direction, when the white field is displayed, read the measurement value and record it as L LR,max ; When the black field is displayed, read and record the measured value as L LR,min The brightness ratio is calculated according to formula (1), and the angle included in the brightness ratio greater than or equal to 10 is the viewing angle.

[0057]

[0058] Where:

[0059] LR——luminance ratio;

[0060] L LR,max ——The maximum luminance value measured when displaying a white field test image, cd / m2;

[0061] L LR,min ——The minimum luminance value measured when displaying a black field test image, cd / m2.

[0062] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for measuring vertical viewing angle of a medical imaging diagnosis display system, characterized in that: include: A display placement unit, comprising a first support frame and a placement table, wherein the placement table is installed on the top of the first support frame, and the display to be detected is placed on the placement table; The brightness meter clamping and adjusting unit comprises a second supporting frame, a lifting mechanism, a lifting plate, an inverted T-shaped bracket, an angle dividing disk device, a rotating arm, a transverse arm, a jacket and a brightness meter, wherein the lifting mechanism is vertically mounted on the second supporting frame, the lifting plate is connected to the slider of the lifting mechanism, the inverted T-shaped bracket is fixedly connected to the lifting plate, the base of the angle dividing disk device is fixedly mounted on the inverted T-shaped bracket, the rotation axis of the angle dividing disk device is horizontally arranged, the rotating arm is connected to the rotating disk of the angle dividing disk device, one end of the transverse arm is connected to the end of the rotating arm, the length direction of the transverse arm is perpendicular to the length direction of the rotating arm, the jacket can be translationally mounted on the transverse arm, and the brightness meter is mounted on the jacket.

2. The device for measuring the vertical viewing angle of a medical imaging diagnosis display system according to claim 1, characterized in that: The lifting mechanism includes a lifting frame, a linear guide and a lead screw. The lifting frame is installed above the first supporting frame, the linear guide is vertically installed on the lifting frame, the lead screw is arranged parallel to the linear guide, and the slider of the linear guide is connected to the nut of the lead screw; the lifting frame is also provided with a ruler for indicating the height difference between the rotation center of the angle dividing plate device and the surface of the placing table.

3. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 1, characterized in that: It also includes an adapter plate, which is connected between the turntable of the angle dividing plate device and the rotating arm, and a bolt connecting hole is provided on the adapter plate. The adapter plate is connected to the turntable of the angle dividing plate device by bolts passing through the bolt connecting hole, and an inwardly concave rectangular groove is provided on the end surface of the adapter plate; a rectangular protrusion is provided at the end of the rotating arm connected to the adapter plate, and the rectangular protrusion is embedded in the rectangular groove, and the rectangular protrusion is locked to the adapter plate by screws.

4. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 3, characterized in that: The rotating arm includes a first arm plate and a second arm plate arranged in parallel and spaced apart. A vertical connecting plate is provided at the end of the rotating arm connected to the transverse arm. One end of the first arm plate and the second arm plate is connected to the rectangular protrusion, and the other end of the first arm plate and the second arm plate is connected to the vertical connecting plate.

5. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 4, characterized in that: A first reinforcing sub-plate is provided at a connection between the first arm plate and the vertical connecting plate, and a second reinforcing sub-plate is provided at a connection between the second arm plate and the vertical connecting plate.

6. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 5, characterized in that: The upper end of the vertical connecting plate is provided with an upper clamping edge extending horizontally backward, and the upper clamping edge matches the upper surface of the transverse arm. The lower end of the vertical connecting plate is provided with a lower clamping edge extending horizontally backward, and the lower clamping edge matches the lower surface of the transverse arm.

7. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 1, characterized in that: The sleeve includes a sliding guide portion located at the rear end and a first clamping portion and a second clamping portion located at the front end and arranged opposite to each other. The sliding guide portion is provided with a rectangular hole, and the rectangular hole matches the outer contour of the transverse arm. The luminance meter is clamped between the first clamping portion and the second clamping portion.

8. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 7, characterized in that: A wiring groove extending vertically through the first clamping portion and / or the second clamping portion is provided in the middle of the first clamping portion.

9. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 8, characterized in that: The traverse arm has a T-shaped slot opening toward the rear side in its cross section.

10. The device for measuring vertical viewing angle of a medical imaging diagnosis display system according to claim 9, characterized in that: It also includes a jacket locking screw. A threaded connection hole is provided on the rear side wall of the jacket sliding guide portion. The jacket locking screw is connected to the threaded connection hole. The head end of the jacket locking screw rests on the bottom surface of the T-slot of the transverse arm.

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