Crosstalk measurement equipment

Abstract

The utility model discloses crosstalk measuring equipment, which comprises a shell, a screen hanging window for hanging a screen to be measured is arranged on the shell, and the window size of the screen hanging window is matched with the size of a display area of the screen to be measured; the device further comprises an image acquisition device and a data processing device, the image acquisition device faces the screen hanging window and is arranged in the shell, and the data processing device is electrically connected with the to-be-tested screen and the image acquisition device. According to the utility model, a reliable darkroom environment is provided for the three-dimensional display screen through the screen hanging window arranged on the shell, so that the crosstalk measurement of the three-dimensional display screen is realized through the cooperation of the data processing device and the image acquisition device, the measurement process is effectively simplified, and the crosstalk measurement efficiency and precision are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional display, in particular to a crosstalk measurement device. Background Art

[0002] In the prior art, three-dimensional display technology often projects different contents onto different eyes by splitting light of a display, thereby forming a three-dimensional perception in the human brain. The quality of the three-dimensional display effect depends on whether the left and right eyes can see their respective corresponding images. If there is serious mutual crosstalk in the split images, the eyes will not receive the images of the corresponding viewpoints, and the human brain cannot perform three-dimensional fusion. Therefore, in three-dimensional display technology, crosstalk is an important index for evaluating the quality of three-dimensional images.

[0003] Three-dimensional display devices have high requirements for display accuracy. However, the existing manufacturing level cannot ensure that all products can be manufactured according to design parameters. Therefore, during the manufacturing process, measurement and correction operations need to be continuously carried out to ensure that the crosstalk rate of the final product is within the set correction range.

[0004] Currently, the crosstalk of three-dimensional display devices is generally judged by the human eye, and the subjectivity and detection efficiency cannot meet the requirements of large-scale mass production. For existing crosstalk measurement devices, variable control is often very cumbersome, and there are many interference factors, making it difficult to ensure measurement accuracy and efficiency. Therefore, a more accurate and convenient crosstalk measurement device is needed. Summary of the Invention

[0005] Object of the Invention: Aiming at the above deficiencies, the utility model provides a crosstalk measurement device, which is convenient for realizing crosstalk measurement during the manufacturing process of a three-dimensional display screen, effectively reducing external interference, and greatly improving the crosstalk measurement efficiency and accuracy.

[0006] Technical Solution: The utility model provides a crosstalk measurement device, including:

[0007] A housing, on which a screen hanging window for hanging a screen to be measured is provided, and the window size of the screen hanging window is adapted to the display area size of the screen to be measured;

[0008] An image acquisition device, which is arranged inside the housing facing the screen hanging window;

[0009] A data processing device, which is electrically connected to the screen to be measured and the image acquisition device respectively.

[0010] Specifically, the horizontal distance between the image acquisition device and the screen hanging window is within the focusing distance range of the image acquisition device, and the height of the image acquisition device relative to the bottom of the housing is flush with the height of the display center of the screen to be measured relative to the bottom of the housing.

[0011] Specifically, the image acquisition device is an industrial camera with a white balance removal function, which is horizontally distributed in each viewing area of the screen to be measured, thereby acquiring the display images of each viewing point of the screen to be measured.

[0012] Specifically, the image acquisition device is a binocular camera. The distance between the camera lenses of the binocular camera is between 56 mm and 66 mm, and the midpoint of the binocular camera corresponds to the display center of the screen to be measured.

[0013] Furthermore, the distance between the camera lenses of the binocular camera is adjustable, specifically, the two side cameras are synchronously adjusted relative to the midpoint.

[0014] Furthermore, the height of the image acquisition device is adjustable to match the screens to be measured of different sizes.

[0015] Furthermore, a size supplementary baffle is provided on the screen hanging window. The size supplementary baffle is detachably connected to the edge of the screen hanging window to adjust the window size of the screen hanging window while ensuring that the lower edge and the midline of the window of the screen hanging window remain unchanged.

[0016] Furthermore, an elastic isolation structure is also provided on the screen hanging window, and the elastic isolation structure covers the edge of the window of the screen hanging window.

[0017] Furthermore, a support structure for carrying the screen to be measured and a signal connection line for connecting the screen to be measured and the data processing device are provided on the lower side of the screen hanging window.

[0018] Furthermore, a fixing lock for fixing the screen to be measured is provided on the side of the screen hanging window. The fixing lock includes a fixing part, a rotating part and a contact part. The fixing part is fixedly connected to the housing, and the contact part is rotatably connected to the fixing part through the rotating part to realize the contact fixation between the contact part and the screen to be measured.

[0019] Beneficial effects: The screen hanging window opened on the housing of the present utility model provides a reliable darkroom environment for the stereoscopic display screen. Thus, through the cooperation of the data processing device and the image acquisition device, the crosstalk measurement of the stereoscopic display screen is realized, effectively simplifying the measurement process, greatly improving the crosstalk measurement efficiency and accuracy, and providing strong technical support for the mass production of stereoscopic display screens. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the crosstalk measurement device in an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of the crosstalk measurement device in another embodiment of the present utility model;

[0022] The figure includes: 1. A housing, 2. A screen to be measured, 3. A screen hanging window, 4. A binocular camera, 5. A support base, 6. A signal connection cable, 7. A fixed latch, 8. A computer, 9. A monocular camera. Specific embodiments

[0023] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Autostereoscopic display uses optical elements (such as lens arrays, gratings, etc.) to direct the images on the screen to different angles in space to achieve stereoscopic imaging. According to its propagation method, it can be divided into three types: dual-view autostereoscopic display, multi-view autostereoscopic display, and integral imaging display. The dual-view autostereoscopic display has two pixel groups that respectively display the left-eye image and the right-eye image. The multi-view autostereoscopic display can generate binocular disparity images with more than two views. The integral imaging display can form a distortion-free spatial stereoscopic image with continuous parallax changes as the viewing position changes. The structure of the integral imaging display is similar to that of the multi-view autostereoscopic display, but for the integral imaging display, there is no need to have a specific viewing position where multiple light rays converge.

[0025] Referring to Figure 1 、 Figure 2 , a crosstalk measurement device provided by the present utility model includes a housing 1, and a screen hanging window 3 for hanging the screen 2 to be measured is arranged on the housing 1. The window size of the screen hanging window 3 is adapted to the display area size of the screen 2 to be measured, specifically not less than the display area size of the screen 2 to be measured and not greater than the border size of the screen 2 to be measured; it further includes an image acquisition device and a data processing device. The image acquisition device is arranged inside the housing 1 facing the screen hanging window 3, and the data processing device is electrically connected to the screen 2 to be measured and the image acquisition device respectively.

[0026] Specifically, the horizontal distance between the image acquisition device and the screen hanging window 3 is within the focusing distance range of the image acquisition device, preferably the designed viewing distance of the screen 2 to be measured. More specifically, in order to meet the measurement requirements of the three autostereoscopic display technologies, the height of the image acquisition device relative to the bottom of the housing is flush with the height of the display center of the screen 2 to be measured relative to the bottom of the housing, so as to acquire the display images of each viewing point of the screen 2 to be measured.

[0027] Specifically, the image acquisition device is an industrial CCD camera with a white balance removal function, which is horizontally distributed in each viewing area of the screen 2 to be measured, thereby acquiring the display images of each viewing point of the screen 2 to be measured. Taking a dual-viewpoint stereoscopic display device as an example, the industrial camera is preferably a binocular camera 4, and the distance between the camera lenses of the binocular camera 4 is between 56 mm and 66 mm (i.e., the normal human eye distance range). The midpoint of the binocular camera 4 corresponds to the display center of the screen 2 to be measured, thereby obtaining the display images of the left and right viewing areas of the screen 2 to be measured. Preferably, the distance between the camera lenses of the binocular camera 4 is adjustable to simulate different human eye distances. Specifically, the two side cameras are adjusted synchronously relative to the midpoint, that is, when adjusting the distance from one side camera to the midpoint, the distance from the other side camera to the midpoint is adjusted synchronously, thereby ensuring that the midpoint position of the binocular camera 4 remains unchanged. Compared with the binocular camera 4, the monocular camera 9 needs to translate the camera to acquire the display images of the left and right viewing areas of the screen 2 to be measured.

[0028] Furthermore, the height of the image acquisition device is adjustable to adapt to screens 2 to be measured of different sizes, making the crosstalk measurement device more versatile. Specifically, a plurality of mounting points for the image acquisition device are provided on the housing 1 on the side opposite to the screen hanging window 3, and the mounting points are vertically distributed to achieve height adjustment of the image acquisition device. The mounting points at different heights correspond to screens 2 to be measured of different sizes and have mounting scale prompts.

[0029] Exemplarily, the mounting points are specifically mounting grooves arranged in a matrix. The mounting grooves are symmetrically arranged in pairs on both sides of the window central axis, and multiple pairs of mounting grooves with different spacings are distributed at the same height. The two camera lenses of the binocular camera 4 are respectively clamped and matched with the paired mounting grooves through mounting brackets, thereby achieving height and distance adjustment of the camera lenses. In addition, other structures such as lifting slide rails and telescopic brackets can also be used to achieve height and distance adjustment of the image acquisition device.

[0030] Specifically, to minimize the influence of ambient light on the measurement process, the housing 1 is made of a light-shielding material and preferably a rough material to reduce the influence of the reflection of the housing 1 on the measurement process. Exemplarily, the housing 1 is a cubic structure made of black matte material with a roughness RA greater than 1, and a screen hanging window 3 is provided on the front side of the housing 1. In order to display the internal components of the housing, the upper cover plate is made transparent, but actually has an opaque upper cover plate.

[0031] Furthermore, the window size of the screen window 3 is adjustable to accommodate screens 2 to be tested of different sizes, so as to enhance versatility. Specifically, a size supplement baffle (not shown in the figure) is provided on the screen window 3, and the size supplement baffle is detachably connected to the edge of the screen window 3 to adjust the window size of the screen window 3. More specifically, the size supplement baffle is made of the same material as the shell 1, and the size supplement baffle is in an inverted concave shape, thereby blocking the left and right sides and the upper side of the screen window 3 to ensure that the lower edge and center line of the window of the screen window 3 remain unchanged. Exemplarily, the size supplement baffle is vertically plugged into the screen window 3 (detachable connection can also be achieved by other means). Different size supplement baffles correspond to screens 2 to be tested of different sizes, so as to achieve the adaptation of the window size of the screen window 3 to the display area size of the screen 2 to be tested.

[0032] Furthermore, the screen window 3 is also provided with an elastic isolation structure (not shown in the figure), which is coated on the window edge of the screen window 3 (i.e., the inner edge of the size supplement baffle) to reduce the risk of scratching the screen by the edge of the screen window 3. Specifically, the elastic isolation structure is made of soft material, and it is ensured that the display area of ​​the screen 2 to be tested is not blocked.

[0033] Specifically, a support structure for carrying the screen 2 to be tested and a signal connection line 6 for connecting the screen 2 to be tested and a data processing device are provided on the lower side of the screen hanging window 3. More specifically, the support structure is a support seat 5 (only shown in the figure), and the support seat 5 is preferably equal in length to the lower edge of the window to avoid light leakage, and a groove for carrying the screen 2 to be tested is provided on the support seat 5.

[0034] Furthermore, a fixed lock buckle 7 for fixing the screen 2 to be tested is provided on the side of the screen hanging window 3 to ensure that the screen 2 to be tested always fits the window edge of the screen hanging window 3 and no light leakage occurs. Specifically, the fixed lock buckle 7 includes a fixed portion, a rotating portion and a contact portion, the fixed portion is fixedly connected to the shell 1, and the contact portion is rotationally connected to the fixed portion through the rotating portion, thereby achieving contact and fixation between the contact portion and the back of the screen 2 to be tested. More specifically, the contact portion is made of a soft material or the contact surface is provided with a soft coating to avoid damage to the screen 2 to be tested during use, while increasing friction and improving stability. Exemplarily, two fixed lock buckles 7 are provided on the left and right sides of the screen hanging window 3, respectively, and the fixed lock buckle 7 includes a fixed seat, a rotating shaft and a fixed plate (not shown in the figure), the fixed seat is fixedly connected to the shell 1, and the fixed plate is rotationally connected to the fixed seat through the rotating shaft, thereby achieving clamping and fixing of the screen 2 to be tested.

[0035] Specifically, the data processing device includes: an image generation module for generating a test image and transmitting it to the screen 2 to be tested; an image acquisition module for controlling an image acquisition device to acquire the display image of the screen 2 to be tested; and a calculation module for calculating the crosstalk value of the screen 2 to be tested based on the generated test image and the acquired display image (for the specific test method, reference can be made to IEC standard 62629-22-1 Measuring methods for Autostereoscopic displays).

[0036] In addition, the data processing device further includes a storage module for storing test data or a network module for uploading test data. Specifically, the storage module can establish a connection between the relevant product data of the screen 2 to be tested and the crosstalk data and store them, and the network module can establish a connection between the relevant product data of the screen 2 to be tested and the crosstalk data and transmit them to a database for use in the next-stage process.

[0037] Exemplarily, the data processing device is a computer 8, which is arranged near the housing 1 and is electrically connected to the screen 2 to be tested and the image acquisition device through signal connection lines 6 respectively.

[0038] The specific implementation manner of this embodiment is as follows:

[0039] Before the test, first, according to the size of the screen 2 to be tested, install a suitable size supplementary baffle and adjust the position of the binocular camera 4; then hang the screen 2 to be tested on the support base 5 of the screen hanging window 3 to ensure that the display center line of the screen 2 to be tested is aligned with the window center line of the screen hanging window 3, and the display area faces the camera of the binocular camera 4 through the window of the screen hanging window 3. Finally, lock the fixing latches 7 around the screen, connect the screen 2 to be tested through the signal connection line 6, and start the test.

[0040] During the test, on the one hand, the data processing device transmits the test image to the screen 2 to be tested, and on the other hand, the binocular camera 4 acquires the display image of the screen 2 to be tested. Thus, the crosstalk value of the screen 2 to be tested is calculated based on the generated test image and the acquired display image, and is stored or transmitted to the server for use in subsequent processes.

[0041] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A crosstalk measurement device, characterized in that: include: A housing, wherein a screen hanging window for hanging the screen to be tested is provided on the housing, and the window size of the screen hanging window is adapted to the display area size of the screen to be tested; An image acquisition device, the image acquisition device is arranged inside the housing facing the screen hanging window; The data processing device is electrically connected to the screen to be tested and the image acquisition device respectively.

2. The crosstalk measurement device according to claim 1, characterized in that: The horizontal distance between the image acquisition device and the screen hanging window is within the focusing distance range of the image acquisition device, and the height of the image acquisition device relative to the bottom of the shell is flush with the height of the display center of the screen to be tested relative to the bottom of the shell.

3. The crosstalk measurement device according to claim 1, characterized in that: The image acquisition device is an industrial camera with a white balance removal function, which is horizontally distributed in each viewing area of ​​the screen to be tested, thereby acquiring display images of each viewpoint of the screen to be tested.

4. The crosstalk measurement device according to claim 1, characterized in that: The image acquisition device is a binocular camera, the camera spacing of the binocular camera is between 56mm and 66mm, and the midpoint of the binocular camera corresponds to the display center of the screen to be tested.

5. The crosstalk measurement device according to claim 4, characterized in that: The camera spacing of the binocular camera is adjustable, specifically, the cameras on both sides are adjusted synchronously relative to the midpoint.

6. The crosstalk measurement device according to claim 1, characterized in that: The height of the image acquisition device is adjustable to match screens to be tested of different sizes.

7. The crosstalk measurement device according to claim 1, characterized in that: The screen window is provided with a size supplement baffle, which is detachably connected to the edge of the screen window to adjust the window size of the screen window while ensuring that the lower edge and center line of the window of the screen window remain unchanged.

8. The crosstalk measurement device according to claim 1, characterized in that: The screen hanging window is also provided with an elastic isolation structure, and the elastic isolation structure is coated on the window edge of the screen hanging window.

9. The crosstalk measurement device according to claim 1, characterized in that: The lower side of the screen hanging window is provided with a supporting structure for carrying the screen to be tested, and a signal connection line for connecting the screen to be tested and a data processing device.

10. The crosstalk measurement device according to claim 1, characterized in that: A fixing lock for fixing the screen to be tested is arranged on the side of the screen hanging window, and the fixing lock comprises a fixing part, a rotating part and a contact part, the fixing part is fixedly connected to the shell, and the contact part is rotatably connected to the fixing part through the rotating part to achieve contact and fixation between the contact part and the screen to be tested.

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