Endoscope gray scale card
By designing an endoscope grayscale card, using the grayscale adjustment component to display only a single level of grayscale, the problem of poor test accuracy caused by the large display of grayscales and small gaps in the prior art is solved, and higher test accuracy and simplified operation steps are achieved.
Patent Information
- Application Number
- CN202420562923.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The existing endoscope grayscale cards have more grayscale displays and small grayscale gaps, which leads to the fact that the test results are easily affected by adjacent grayscales and have poor accuracy.
An endoscope grayscale card is designed, including a background area and a grayscale display area. The grayscale display area adjusts different levels of grayscale through the grayscale adjustment component, and only a single level of grayscale is displayed at a time to avoid interference from adjacent grayscales.
It improves the accuracy of the test, simplifies the operation steps, avoids the cumbersome alignment operation of grayscale jams when used, and improves detection efficiency.
Smart Images
Figure CN222671382U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of endoscope testing, and in particular to an endoscope grayscale card. Background Art
[0002] At present, it is generally necessary to test the grayscale during the testing process of endoscopes. However, the grayscale cards commonly used in the industry are relatively large in size and display more grayscales. Taking a 21-level grayscale card as an example, when identifying different grayscales, a light-blocking plate is needed to cover other grayscales. However, the gaps between grayscales are very small and cannot be accurately covered. The test results are often affected by adjacent grayscales. Summary of the invention
[0003] In view of this, the present application provides an endoscope grayscale card, which at least solves the problem that the grayscale card displays too many grayscales, the gaps between the grayscales are small, and the endoscope test results will be affected by adjacent grayscales.
[0004] Specifically, the present application provides an endoscope grayscale card including a background area and a grayscale display area, wherein the background area is surrounded by the edge of the grayscale display area; the grayscale display area is provided with a grayscale adjustment component, which is suitable for adjusting the presentation of different levels of grayscale, and only a single level of grayscale is displayed at any time.
[0005] In some embodiments, the grayscale adjustment component includes a backlight structure and an adjustment structure; the backlight structure has a light source and a light-emitting surface and a light-blocking surface that are relatively arranged, the light source is arranged between the light-emitting surface and the light-blocking surface, the light emitted by the light source is emitted from the light-emitting surface, and the light-blocking surface is suitable for blocking the light emitted by the light source; the adjustment structure is arranged on one side of the light-emitting surface of the backlight structure, the adjustment structure has a light-transmitting surface, and the adjustment structure is suitable for adjusting the light transmittance brightness of the light-transmitting surface.
[0006] In some embodiments, the adjustment structure includes a first polarizing component, the first polarizing component includes at least two polarizers with different polarization degrees and stacked, and the at least two polarizers can rotate relative to each other.
[0007] In some embodiments, the first polarizing assembly includes a first 0° polarizer and a first 90° polarizer that are stacked; the first 0° polarizer is fixedly arranged relative to the backlight structure, and the first 90° polarizer is rotatably arranged relative to the first 0° polarizer; or, the first 90° polarizer is fixedly arranged relative to the backlight structure, and the first 0° polarizer is rotatably arranged relative to the first 90° polarizer; or, both the first 0° polarizer and the first 90° polarizer are rotatably arranged relative to the backlight structure.
[0008] In some embodiments, the adjustment structure includes a second polarizing component, a liquid crystal panel and a voltage control component; the second polarizing component has a fixed polarization degree, and the second polarizing component and the liquid crystal panel are stacked; the voltage control component is electrically connected to the liquid crystal panel, and the voltage control component controls the power-on voltage of the liquid crystal panel; the liquid crystal panel is suitable for having different liquid crystal deflection angles according to different power-on voltages.
[0009] In some embodiments, the second polarizing assembly includes a second 0° polarizer and a second 90° polarizer stacked together; the liquid crystal panel is disposed between the second 0° polarizer and the second 90° polarizer.
[0010] In some embodiments, the backlight structure includes a backlight plate and LED lamp beads embedded in the backlight plate. One side of the backlight plate is a light-emitting surface, and the other side of the backlight plate is a light-blocking surface. The light-blocking surface is coated with a light-shielding coating.
[0011] In some embodiments, the backlight plate is made of a light-guiding material, and the LED lamp beads are disposed at least at one end of the backlight plate.
[0012] In some embodiments, there are multiple LED lamp beads, and the multiple LED lamp beads are evenly distributed at both ends of the backlight panel; or, the multiple LED lamp beads are spaced apart along the length direction of the backlight panel.
[0013] In some embodiments, the grayscale display area is a square area, and the size of the square area is consistent with the size of the camera field of view under the endoscope test condition.
[0014] Beneficial effects:
[0015] The grayscale display area of the endoscope grayscale card is located in the middle of the background area. It can be adjusted to present different grayscales through the grayscale adjustment component, and only one grayscale is displayed at a time, avoiding interference of adjacent grayscales on the test results during testing, improving test accuracy and simplifying operation steps. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work. Description of the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of the endoscope grayscale card described in an embodiment of the present application;
[0019] Figure 2 It is a side cross-sectional view of the grayscale adjustment component described in the embodiment of the present application.
[0020] Description of reference numerals:
[0021] 100. Endoscope grayscale card;
[0022] 110, background area; 120, grayscale display area; 130, grayscale adjustment component;
[0023] 131. backlight panel; 132. LED lamp beads; 133. second 0° polarizer; 134. liquid crystal panel; 135. second 90° polarizer. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.
[0025] In order to deepen the understanding of this application solution, it is necessary to elaborate on the technical issues in detail in combination with relevant technologies. The specific contents are as follows:
[0026] The grayscale needs to be tested during the endoscope testing process. The grayscale card commonly used in the industry is relatively large in size and displays more grayscales. Taking the 21-level grayscale card as an example, when identifying different grayscales, a light-blocking plate is needed to cover other grayscales. However, the gaps between grayscales are very small and cannot be accurately covered, and the test results will be affected by adjacent grayscales.
[0027] When the current grayscale card is in use, different grayscales are located at different positions, and constant alignment operations are required, which is very cumbersome and inefficient.
[0028] In order to alleviate the above technical problems, the present application provides an endoscope grayscale card. Figure 1 and Figure 2 The embodiments of the present application are described in detail.
[0029] Reference Figure 1 The present application provides an endoscope grayscale card 100, which includes a background area 110 and a grayscale display area 120. The background area 110 is arranged at the edge of the grayscale display area. The grayscale display area 120 is provided with a grayscale adjustment component 130. The grayscale adjustment component 130 is suitable for adjusting the grayscales of different levels, and only a single level of grayscale is displayed at any time.
[0030] Specifically, the grayscale display area 120 of the endoscope grayscale card 100 is located in the middle of the background area 110, and can be adjusted to present different grayscales through the grayscale adjustment component 130, and only one grayscale is displayed at a time, avoiding interference of adjacent grayscales on the test results during testing and improving the test accuracy.
[0031] Furthermore, the position of the grayscale display area 120 is relatively fixed, and multiple alignments are not required, which simplifies the operation steps and improves the detection efficiency.
[0032] In some embodiments, the grayscale adjustment component 130 is adapted to adjust the grayscale level step by step.
[0033] It should be noted that the grayscale card is a benchmark for accurately detecting exposure. Photos with rich layers and saturated colors come from accurate exposure. If the light in the shooting scene is too bright or too dark, it may cause exposure deviation. The grayscale card can balance scenes with complex light to 18% neutral gray. By recording the reflected light of the grayscale card with a light meter, accurate exposure values can be obtained. Furthermore, grayscale cards can generally be divided into different versions such as 12 grayscale, 16 grayscale and 20 grayscale according to the corresponding international standards.
[0034] Specifically, this solution can gradually adjust the grayscale levels, avoiding large jumps in the grayscale levels during the grayscale adjustment process, which would affect the test results.
[0035] In some embodiments, the grayscale adjustment component 130 includes a backlight structure and an adjustment structure; the backlight structure has a light source and a light-emitting surface and a light-blocking surface that are relatively arranged, the light source is arranged between the light-emitting surface and the light-blocking surface, the light emitted by the light source is emitted from the light-emitting surface, and the light-blocking surface is suitable for blocking the light emitted by the light source; the adjustment structure is arranged on one side of the light-emitting surface of the backlight structure, the adjustment structure has a light-transmitting surface, and the adjustment structure is suitable for adjusting the light transmittance brightness of the light-transmitting surface.
[0036] In this embodiment, preferably, the backlight structure provides a light source, and the adjustment structure adjusts the light transmission brightness to achieve the transition of grayscale levels.
[0037] In some embodiments, the adjustment structure includes a first polarizing component, the first polarizing component includes at least two polarizers with different polarization degrees and stacked, and the at least two polarizers can rotate relative to each other.
[0038] In this embodiment, preferably, a plurality of polarizers with different polarization degrees rotate relative to each other to achieve the purpose of adjusting the light transmission brightness, with a simple structure and convenient operation.
[0039] It should be noted that light has the dual nature of wave and particle. If the propagation direction is defined as the X direction, any light can be composed of polarized light in two perpendicular directions, Y and Z. The polarizer contains an optical film with a tiny grating structure, which blocks polarized light (blue light) whose polarization direction is perpendicular to the grating structure direction, and allows polarized light (red light) parallel to the grating structure to pass. Light perpendicular to the transmission axis of the polarizer is absorbed, and only light parallel to the transmission axis of the polarizer is retained. When natural light passes through the polarizer, the light perpendicular to the transmission axis of the polarizer will be absorbed and cannot pass through, leaving only the light parallel to the transmission axis of the polarizer, forming a light and dark contrast, achieving the function of picture display.
[0040] In some embodiments, the first polarizing assembly includes a first 0° polarizer and a first 90° polarizer that are stacked; the first 0° polarizer is fixedly arranged relative to the backlight structure, and the first 90° polarizer is rotatably arranged relative to the first 0° polarizer; or, the first 90° polarizer is fixedly arranged relative to the backlight structure, and the first 0° polarizer is rotatably arranged relative to the first 90° polarizer; or, both the first 0° polarizer and the first 90° polarizer are rotatably arranged relative to the backlight structure.
[0041] Specifically, the three specific implementations of the first polarizing component can all achieve the purpose of adjusting the light transmission brightness well, and all fall within the protection scope of the present application.
[0042] In some embodiments, reference Figure 2 The adjustment structure includes a second polarizing component, a liquid crystal panel 134 and a voltage control component; the second polarizing component has a fixed polarization degree, and the second polarizing component and the liquid crystal panel are stacked; the voltage control component is electrically connected to the liquid crystal panel 134, and the voltage control component controls the power-on voltage of the liquid crystal panel 134; the liquid crystal panel 134 is suitable for having different liquid crystal deflection angles according to different power-on voltages.
[0043] In this embodiment, preferably, the light transmission brightness is adjusted by the combination of the second polarizing component and the liquid crystal panel 134, and the voltage control element controls the deflection angle of the liquid crystal in the liquid crystal panel 134, which is easy to operate.
[0044] It should be noted that the interference of external electric fields can lead to significant changes in the microscopic properties of liquid crystal systems. Both electric and magnetic fields can be used to induce these changes. The magnitude of the applied field, as well as the speed of its change, are very important properties in its application in industrial processing. Special surface treatments can be used in liquid crystal devices to give the liquid crystal a specific orientation.
[0045] In some embodiments, reference Figure 2 The second polarizing assembly includes a second 0° polarizer 133 and a second 90° polarizer 135 stacked together; a liquid crystal panel 134 is disposed between the second 0° polarizer 133 and the second 90° polarizer 135;
[0046] Between the polarizers 135 .
[0047] In this embodiment, preferably, the liquid crystal panel 134 is arranged between the second 0° polarizer 133 and the second 90° polarizer 135, and the positions of the three are relatively fixed. The position of the second 0° polarizer 133 and the second 90° polarizer 135 can be swapped, which all fall within the protection scope of this application.
[0048] In some embodiments, reference Figure 2 The backlight structure includes a backlight plate 131 and LED lamp beads 132 embedded in the backlight plate 131. One side of the backlight plate is a light-emitting surface, and the other side of the backlight plate is a light-blocking surface, and the light-blocking surface is coated with a light-shielding coating.
[0049] In this embodiment, preferably, the backlight panel 131 and the LED lamp beads 132 cooperate to achieve the purpose of the light source.
[0050] In some embodiments, the backlight panel 131 is made of a light-guiding material, and the LED lamp beads 132 are disposed at least at one end of the backlight panel 131 .
[0051] Specifically, this solution is a further disclosure of the backlight structure. The light emitted by the LED lamp beads 132 is guided out through one side of the backlight plate 131, and a shading material can be provided on the other side of the backlight plate 131 to avoid light loss.
[0052] In addition, two LED lamp beads 132 can also be provided, located at the two ends of the backlight plate 131 respectively, which can also achieve the purpose of providing a light source and also fall within the protection scope of this application.
[0053] In some embodiments, there are multiple LED lamp beads, and the multiple LED lamp beads are evenly distributed at both ends of the backlight panel; or, the multiple LED lamp beads are spaced apart along the length direction of the backlight panel.
[0054] In this embodiment, multiple LED lamp beads are used as light sources to improve the basic luminous brightness and provide sufficient adjustable amount for grayscale adjustment. The above two settings can achieve this purpose and are both within the scope of protection of this application.
[0055] In some embodiments, the grayscale display area is a square area, and the size of the square area is consistent with the size of the camera field of view under the endoscope test condition.
[0056] It should be noted that a single grayscale area of the grayscale card is generally rectangular or square to adapt to the field of view adopted by the camera during endoscope testing. In this embodiment, the grayscale display area is a square area, and the size of the square area is consistent with the size of the camera field of view under the endoscope testing condition, so as to maximize the use of the size of the grayscale display area and make the test results more accurate.
[0057] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. An endoscope grayscale card, characterized in that: It comprises a background area (110) and a grayscale display area (120), wherein the background area (110) is arranged around the edge of the grayscale display area (120); The grayscale display area (120) is provided with a grayscale adjustment component (130), and the grayscale adjustment component (130) is suitable for adjusting and presenting grayscales of different levels, and only displays a single level of grayscale at any time.
2. The endoscope grayscale card according to claim 1, characterized in that: The grayscale adjustment component (130) comprises a backlight structure and an adjustment structure; The backlight structure comprises a light source and a light-emitting surface and a light-blocking surface which are arranged opposite to each other, wherein the light source is arranged between the light-emitting surface and the light-blocking surface, the light emitted by the light source is emitted from the light-emitting surface, and the light-blocking surface is suitable for shielding the light emitted by the light source; The adjustment structure is arranged on one side of the light emitting surface of the backlight structure, and the adjustment structure has a light-transmitting surface. The adjustment structure can adjust the light-transmitting brightness of the light-transmitting surface.
3. The endoscope grayscale card according to claim 2, characterized in that: The adjustment structure includes a first polarizing component, which includes at least two polarizing plates with different polarization degrees and stacked, and the at least two polarizing plates can rotate relative to each other.
4. The endoscope grayscale card according to claim 3, characterized in that: The first polarizing assembly includes a first 0° polarizer and a first 90° polarizer which are stacked; The first 0° polarizer is fixedly arranged relative to the backlight structure, and the first 90° polarizer is rotatably arranged relative to the first 0° polarizer; Alternatively, the first 90° polarizer is fixedly arranged relative to the backlight structure, and the first 0° polarizer is rotatably arranged relative to the first 90° polarizer; Alternatively, the first 0° polarizer and the first 90° polarizer are both rotated relative to the backlight structure.
5. The endoscope grayscale card according to claim 2, characterized in that: The regulating structure comprises a second polarizing component, a liquid crystal panel (134) and a voltage control element; The second polarizing component has a fixed polarization degree, and the second polarizing component is stacked with the liquid crystal panel; The voltage control component is electrically connected to the liquid crystal panel (134), and the voltage control component controls the power-on voltage of the liquid crystal panel (134); The liquid crystal panel (134) is suitable for having different liquid crystal deflection angles according to different power-on voltages.
6. The endoscope grayscale card according to claim 5, characterized in that: The second polarizing assembly comprises a second 0° polarizer (133) and a second 90° polarizer (135) which are stacked; The liquid crystal panel (134) is arranged between the second 0° polarizer (133) and the second 90° polarizer (135).
7. The endoscope grayscale card according to any one of claims 2 to 6, characterized in that: The backlight structure comprises a backlight plate (131) and LED lamp beads (132) embedded in the backlight plate (131); one side of the backlight plate is the light-emitting surface; the other side of the backlight plate is the light-blocking surface; and the light-blocking surface is coated with a light-shielding coating.
8. The endoscope grayscale card according to claim 7, characterized in that: The backlight plate (131) is made of a light-guiding material, and the LED lamp bead (132) is at least arranged at one end of the backlight plate (131).
9. The endoscope grayscale card according to claim 8, characterized in that: There are a plurality of LED lamp beads (132), and the plurality of LED lamp beads (132) are evenly distributed at two ends of the backlight plate; Alternatively, the plurality of LED lamp beads (132) are arranged at intervals along the length direction of the backlight plate.
10. The endoscope grayscale card according to claim 1, characterized in that: The grayscale display area (120) is a square area, and the size of the square area is consistent with the size of the camera field of view under endoscope testing conditions.