Calibration device of 3D module

Abstract

The utility model discloses a calibration device of a 3D module, comprising a bearing module which is provided with a light-permeable bearing part, a backlight source is arranged below the bearing part, and the size of the bearing part can be controlled so as to adapt to and bear the 3D module to be measured; the image processing module is arranged on the bearing module and is used for generating a test image, displaying the test image on the to-be-tested 3D module, receiving the test image acquired by the image acquisition module and calibrating parameters of the to-be-tested 3D module according to the test image; and the image acquisition module is used for acquiring test images displayed by the to-be-tested 3D module at different positions away from the to-be-tested 3D module. According to the utility model, the independent backlight source is arranged, and the bearing part with the controllable size is arranged on the bearing module, so that adjustment can be carried out according to the size of the 3D module to be detected, and the adaptation of the backlight source and the alignment of detection are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D display, and in particular to a calibration device for a 3D module. Background Art

[0002] With the continuous advancement of science and technology, naked-eye 3D technology, as an emerging display technology, is gradually entering people's field of vision. Naked-eye 3D technology allows viewers to enjoy realistic stereoscopic image effects without using any special glasses. Among them, cylindrical lens grating naked-eye 3D display technology has become one of the key research and development areas of naked-eye 3D technology due to its advantages such as small loss of picture brightness, less influence of moiré fringes, and small loss of image resolution in all directions.

[0003] However, in the rod lens grating naked-eye 3D display technology, due to process problems, the horizontal length of the prism in the whole machine and the height of the prism from the pixel are often inconsistent with the design value, resulting in the actual optimal viewing distance being inconsistent with the theoretical value calculated based on the design value, affecting the accuracy of the image synthesis and human eye tracking linkage, and will affect the overall 3D effect. Therefore, it is necessary to calibrate the parameters of the naked-eye 3D display device to obtain a theoretical optimal viewing distance that is closer to the actual optimal viewing distance.

[0004] In the prior art, patent number CN116086327A provides a parameter calibration device for a naked-eye 3D display device. However, in this solution and the prior art, it is necessary to separately configure an adaptive backlight source for the naked-eye 3D display device to provide backlight. When replacing the naked-eye 3D display device under test, it is necessary to replace it as a whole. This is not only not easy to operate, but also requires different naked-eye 3D display devices to be equipped with their adaptive backlight sources, which greatly increases the cost. Summary of the invention

[0005] Purpose of the invention: In view of the above-mentioned deficiencies, the utility model provides a calibration device for a 3D module, which ensures the adaptation and detection alignment of the backlight source by setting a separate backlight source and a controllable central control structure of the carrying part.

[0006] Technical solution:

[0007] The present invention provides a 3D module calibration device, comprising:

[0008] A carrying module, on which a light-transmissive carrying portion is provided, and a backlight source is provided below the carrying portion, and the carrying portion has a controllable size to accommodate the 3D module to be tested;

[0009] An image processing module is provided on the carrier module, and is used to generate a test image and display it on the 3D module to be tested, and at the same time receive the test image acquired by the image acquisition module, and calibrate the parameters of the 3D module to be tested accordingly;

[0010] The image acquisition module is used to acquire the test image displayed by the 3D module to be tested at different positions from the 3D module to be tested.

[0011] Specifically, a telescopic member that can be extended and retracted along a direction parallel to the bearing portion is arranged on the bearing portion, and the telescopic member is extended and retracted to cover a partial area of ​​the bearing portion, so that the size of the bearing portion can be controlled.

[0012] Specifically, a mounting groove and a covering member designed to correspond to the mounting groove and having a size consistent with the corresponding side wall of the bearing portion are provided on the side wall of the bearing portion, and the size of the bearing portion can be controlled by covering with the covering member.

[0013] Specifically, the image acquisition module is slidably disposed at a position above the carrying module and directly opposite to the carrying portion in a direction perpendicular to the carrying module.

[0014] Specifically, it also includes a mounting frame, and the carrying module, the image processing module and the image acquisition module are all mounted on the mounting frame.

[0015] More specifically, the carrying module is a carrying plate fixedly installed in the mounting frame and arranged horizontally, a slot is provided on the carrying plate to form a carrying space for carrying the 3D module to be tested, and the carrying portion is arranged in the carrying space.

[0016] Furthermore, a plurality of standard test holes are provided on the carrier plate at positions on the carrier side, and a matching groove for installing a cylindrical lens is provided on the carrier plate below the standard test holes. The pixels corresponding to the standard test holes in the test image captured by the image acquisition module are used as standard pixels, which are compared with the pixels on the image displayed on the 3D module to be tested in the test image.

[0017] Furthermore, a second carrier plate is covered below the carrier plate, the backlight source is arranged on the second carrier plate at a position corresponding to the carrier space, and the carrier space and the second carrier plate together form a receiving space, and the receiving space is used as a bearing part for bearing the 3D module to be tested.

[0018] More specifically, a light shielding member is covered outside the mounting frame so that an independent dark room is formed inside the mounting frame.

[0019] Specifically, the image processing module is also connected to a barcode scanner, and the barcode scanner realizes the connection between the image processing module and the 3D module by scanning the corresponding code on the 3D module.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model sets an independent backlight source, and sets a bearing part with controllable size on the bearing module, which can be adjusted according to the size of the 3D module to be tested to ensure the adaptation of the backlight source and the alignment of the detection.

[0022] (2) The utility model is provided with a shading module, which can form an independent dark room for image acquisition and eliminate the interference of external light sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the description of one or more embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 This is a schematic diagram of the structure of a 3D module calibration device according to an embodiment of the utility model;

[0025] Figure 2 It is a schematic diagram of a shading component covering the outside of the calibration device of the 3D module of the utility model;

[0026] Figure 3 FIG. 4 is a structural schematic diagram of a 3D module calibration device according to another embodiment of the present invention.

[0027] In the figure, 10 is a mounting frame, 20 is a carrying module, 30 is an image processing module, and 40 is an image acquisition module;

[0028] 11 is a control panel, 12 is a control button;

[0029] 21 is a bearing plate, 22 is a bearing space, 23 is a standard test hole, and 24 is a second bearing plate;

[0030] 31 is a data processing device, 32 is a display device;

[0031] 41 is a slide rail, and 42 is a driving device. DETAILED DESCRIPTION

[0032] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions 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 only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0033] Figure 1 FIG. 4 shows a calibration device for a 3D module according to an embodiment of the present invention. Figure 1 As shown, the calibration device of the 3D module of the utility model comprises a mounting frame 10, a bearing module 20, an image processing module 30 and an image acquisition module 40; the bearing module 20 is detachably arranged on the mounting frame 10, and a light-transmissive bearing part is provided on the bearing module 20 for carrying the 3D module to be tested, the bearing part is larger than the display part of the 3D module to be tested, and a backlight device (not shown in the figure) is arranged below the bearing part as a backlight source, and the light of the backlight device can pass through the bearing part, pass through the 3D module to be tested, and can be collected by the image acquisition module 40; the size of the bearing part is controllable to adapt to 3D modules of different specifications; the image processing module 30 is arranged on the bearing module 20 and connected to the 3D module to be tested, and is used to generate a test image and display the test image on the 3D module to be tested; at the same time, the image processing module 30 receives the image acquisition The test image captured by the image acquisition module 40 is processed and calculated to obtain the parameters of the 3D module to be calibrated; the image acquisition module 40 is slidably arranged on the mounting frame 10 in a direction perpendicular to the carrying module 20, and is located above the carrying module 20 and directly opposite to the carrying part, and is used to collect test images displayed by the 3D module to be tested at different positions from the 3D module to be tested, and then determine the calibration positions of multiple images that meet the threshold requirements during the movement, and then obtain a combination of multiple test images and the calibration position of the image acquisition module 40 when the image is collected; specifically, the image processing module 30 performs simulation calculations based on the multiple calibration positions and their corresponding test images, and can obtain the parameters of the 3D module to be tested, thereby completing the calibration of the 3D module, wherein the existing technology method used in the simulation calculation is not repeated here.

[0034] In some embodiments, the aforementioned mounting frame 10, carrying module 20, image processing module 30 and image acquisition module 40 may be coated with black pigment or paint to reduce the reflection of corresponding objects during image acquisition, thereby reducing interference and ensuring accuracy.

[0035] In the present invention, the mounting frame 10 is a three-dimensional frame structure surrounded by a plurality of support rods, and the shape can be a regular or irregular column; in this embodiment, the mounting frame 10 is configured as a rectangular parallelepiped frame structure, and a mounting space is formed therein.

[0036] In the present utility model, if Figure 2 As shown, the outside of the mounting frame 10 is also covered with a shading member, and further, the shading member can be a shading curtain, so that an independent dark room can be formed for image acquisition, and interference from external light sources can be eliminated.

[0037] In some embodiments, a plurality of static electricity removal devices are also provided on the mounting frame 10, and the static electricity removal devices may be ion fans.

[0038] In some embodiments, a plurality of rollers are provided at the bottom of the mounting frame 10 to facilitate its movement, making it more convenient to use when the calibration location needs to be changed frequently.

[0039] In the present invention, the carrying module 20 can be replaced according to the size of the 3D module to be tested, so as to ensure that the size of its carrying part is larger than the display part of the 3D module to be tested.

[0040] In some embodiments, after the size of the carrying portion is adjusted, the 3D module to be tested carried thereon is always directly opposite the image acquisition module 40; further, the image acquisition module 40 is arranged on the mounting frame 10 above the center of the carrying portion of the carrying module 20, so that after the size of the carrying portion is adjusted, the image acquisition module 40 is always directly opposite the center of the 3D module to be tested carried thereon.

[0041] In some embodiments, a telescopic member that can be extended and retracted along a direction parallel to the bearing portion is provided on the bearing portion, and the telescopic member can be extended and retracted to cover a partial area of ​​the bearing portion, so as to achieve controllable size of the bearing portion.

[0042] Furthermore, the telescopic members arranged on the bearing portion are symmetrically arranged to ensure that after the size of the bearing portion is adjusted, the 3D module to be tested carried thereon is always directly opposite to the image acquisition module 40 .

[0043] In some embodiments, the shape of the bearing portion is designed to fit the shape of the 3D module, such as a rectangle, a circular screen with positioning marks, a special-shaped screen, etc. Further, the telescopic members provided on the bearing portion may be symmetrically arranged on two opposite sides of the bearing portion; or they may be arranged on all four sides of the bearing portion, and the telescopic members on the opposite sides may be symmetrically arranged.

[0044] In some embodiments, the controllable size of the load-bearing portion can also be achieved through a detachable cover on the side of the load-bearing portion. Specifically, by providing an installation groove on the side wall of the load-bearing portion and designing a cover that corresponds to the installation groove and has a size consistent with the corresponding size of the side wall of the load-bearing portion, the installation of the cover can be achieved, thereby achieving controllable size of the load-bearing portion.

[0045] For example, if the shape of the bearing part is designed to be rectangular, removable covers can be symmetrically arranged on the two opposite sides of the bearing part. Specifically, several first covers of different widths and lengths can be designed to be consistent with the corresponding side walls of the bearing part, thereby achieving controllable size of the bearing part. Furthermore, several second covers of different lengths corresponding to the other two sides of the bearing part can be designed. The length of the second cover is designed according to the length of the corresponding side wall of the bearing part after the aforementioned first cover is installed, and its width is consistent with the aforementioned first cover.

[0046] In some embodiments, the supporting part is made of a transparent material, specifically, glass or resin.

[0047] Specifically, in the utility model, the carrying module 20 is fixedly installed on a carrying plate 21 horizontally arranged in the mounting frame 10, and a light-transmissive carrying portion is arranged on the carrying plate 21; further, a slot is opened on the carrying plate 21 to form a carrying space 22 for carrying the 3D module to be tested, and the carrying portion is arranged in the carrying space 22 to carry the 3D module to be tested arranged in the carrying space 22, so as to prevent the 3D module to be tested from falling and causing damage.

[0048] In some embodiments, reference Figure 3 A plurality of standard test holes 23 are provided on the carrier plate 21 at the side of the carrier portion, and a matching groove is provided on the carrier plate 21 below the standard test holes 23. Column lenses of different specifications can be installed in the matching groove, and then the pixels corresponding to the standard test holes 23 in the test image captured by the image acquisition module 40 can be obtained, and the pixels are used as standard pixels to be compared with the pixels on the image displayed on the 3D module to be tested in the test image.

[0049] Furthermore, 1-2 standard test holes 23 may be respectively provided on different sides of the bearing portion of the bearing plate 21 .

[0050] In some embodiments, the carrying space 22 may be a regular shape, such as a rectangle.

[0051] In some embodiments, a groove is provided on the side wall of the bearing space 22, and the telescopic member is telescopically disposed in the groove.

[0052] Furthermore, grooves may be symmetrically provided on opposite side walls of the bearing space 22 , and the telescopic member may be telescopically provided in the grooves; further, the telescopic member may be a rectangular piece having the same size as the corresponding side wall of the bearing space 22 .

[0053] Furthermore, grooves may be provided on the four side walls of the carrying space 22, and the telescopic parts may be telescopically arranged in the grooves, and the grooves on the opposite side walls of the carrying space 22 are symmetrically arranged with each other; further, the telescopic parts on the four side walls may be designed as the same isosceles trapezoid, and the size of the lower base thereof is consistent with the size of the corresponding side wall of the carrying space 22, and the upper base thereof cooperates together to form the side of the adjusted carrying part.

[0054] In the utility model, a driving mechanism can be arranged on the mounting frame 10 and connected to the aforementioned telescopic member through a transmission mechanism. The driving mechanism can drive the telescopic member to perform telescopic movement through the transmission mechanism to achieve controllable size of the bearing part.

[0055] In the present invention, different specifications of the carrying plates 21 can be designed, and the carrying space 22 thereon can be adapted to different specifications of the 3D modules to be tested.

[0056] In the present invention, the image processing module 30 can be arranged on the mounting frame 10 or the carrying module 20, and is used to generate a test image, and display the test image on the 3D module to be tested. In the present invention, the image processing module 30 includes a data processing device 31 and a display device 32 connected to each other, wherein the data processing device is connected to the image acquisition module 40, and is used to generate a test image, and can be displayed on the display device, and the test image can be sent to the 3D module to be tested for display, and at the same time, the data processing device can receive the image acquired by the image acquisition module 40, and can perform image processing and analysis and calculation based on it, so as to obtain the arrangement parameters of the 3D module to be tested, the crosstalk value of the 3D module, and the spectral performance index of the 3D module, and upload these parameters to the server side for subsequent process extraction and use.

[0057] In some embodiments, the image processing module 30 is disposed on the aforementioned carrier board 21 , and the display device can be disposed on the aforementioned carrier board 21 or outside the mounting bracket 10 of the present invention.

[0058] In the present invention, the image acquisition module 40 is a camera, specifically, a monocular camera or a binocular camera, the center position distance of the lens of the binocular camera is the same as the pupil distance of a person, which can be 58-64mm, among which 58mm and 62mm are more suitable, matching the pupil distance of a standard female and a standard male, respectively. When a monocular camera is used, the image acquisition module can also move in the horizontal direction, and two images can be collected at two fixed points during collection. The distance between the two fixed points is the pupil distance of a person's eyes, which can make the test results more accurate, simplify software compensation, and improve efficiency. It is also possible to measure at multiple points to give a calibration value that is more suitable for people of different genders and physiques.

[0059] In the utility model, a slide rail 41 is provided on the mounting frame 10 at a position above the carrying module 20 and directly opposite to the carrying portion, and the image acquisition module 40 is slidably installed on the slide rail 41. Specifically, a slider is slidably provided on the slide rail 41, and the image acquisition module 40 is fixedly connected to the slider; a driving device 42 is also provided on the side of the slide rail 41, and the driving device 42 can drive the image acquisition device 40 to slide on the slide rail 41.

[0060] In some embodiments, the length of the slide rail 41 is set according to the observable distance of the best 3D effect displayed by the 3D module to be tested. For example, the length of the slide rail 41 can be designed to be 450-1200 cm.

[0061] In some embodiments, an adjustment slot is provided on the slide rail 41 along its length direction, and the image acquisition module 40 can be movably arranged in the adjustment slot in a direction perpendicular to the slide rail 41, so that the image acquisition module 40 can be fine-tuned in a direction perpendicular to the slide rail 41, and further ensure that the image acquisition module 40 is aligned with the center of the bearing part. For example, a telescopic part that can be telescoped in a direction perpendicular to the slide rail 41 can be arranged in the adjustment slot, and the image acquisition module 40 is fixedly connected to the telescopic part.

[0062] In some embodiments, the data processing device may be connected to the driving device 42 , and after generating the test image, the driving device 42 may be controlled to drive the image acquisition module 40 to slide on the slide rail 41 .

[0063] In some embodiments, a backlight switch connected to a backlight device is also provided on the mounting frame 10, so that the backlight can be individually controlled to be turned on or off to improve the convenience of operation. Furthermore, the backlight switch can also be connected to a data processing device of the image generation module 30, so that the linkage between the backlight source and the display device can be realized. When the display device is provided in the mounting frame 10, only one of the backlight switch or the display device can be turned on by the data processing device, so that only one of the backlight and the display device is lit, so that the influence of the display device on the image acquisition of the 3D module to be tested can be reduced.

[0064] A control panel 11 is also provided on the mounting frame 10, and the control panel 11 can be connected to the data processing device. A number of control buttons 12 are provided on the control panel 11 for controlling, so that the test image generation, driving the image acquisition module 40 to slide up and down, etc. can be controlled by the control buttons 12. The backlight device provided under the carrying part can also be connected to the aforementioned control panel 11, and the aforementioned control buttons 12 can be used to control the backlight to be turned on or off.

[0065] The utility model also provides a calibration device for a 3D module of an embodiment, wherein a second carrier plate 24 is also covered below the aforementioned carrier plate 21, and a backlight device is mounted on the second carrier plate 24, and the backlight device corresponds to the bearing space 22 on the carrier plate 21; further, a support plate made of a transparent material can be provided on the backlight device, so as to protect the backlight device when the 3D module to be tested is carried on the support plate. The bearing space 22 on the carrier plate 21 and the second carrier plate 24 together form a receiving space, and the receiving space is used as a bearing part for carrying the 3D module to be tested. When positioning the equipment, the 3D module to be tested can be directly placed in the receiving space, thereby improving the operating efficiency.

[0066] The utility model also provides a 3D module calibration device of an embodiment, wherein a barcode scanner is further connected to the aforementioned image processing module, and the barcode scanner scans the corresponding code on the 3D module to input the number of the 3D module, so as to complete the connection between the image processing module and the 3D module, thereby speeding up the number input of the 3D module, without the need to manually input the numbers one by one to complete the connection between the image processing module and the 3D module, thereby improving the efficiency of production and processing. Specifically, the barcode scanner is connected to the data processing device 31.

[0067] The utility model sets a controllable size bearing part on the bearing module, which can be adjusted according to the size of the 3D module to be tested to ensure the alignment of the detection. At the same time, an independent backlight source and shading module are set to form an independent dark room for image acquisition, which can eliminate the interference of external light sources.

[0068] In the description of this specification, the description with reference to the terms "an embodiment", "some embodiments", "exemplary", "specific", or "further" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A 3D module calibration device, characterized in that: include: A carrying module, on which a light-transmissive carrying portion is provided, and a backlight source is provided below the carrying portion, and the carrying portion has a controllable size to accommodate the 3D module to be tested; An image processing module is provided on the carrier module, and is used to generate a test image and display it on the 3D module to be tested, and at the same time receive the test image acquired by the image acquisition module, and calibrate the parameters of the 3D module to be tested accordingly; The image acquisition module is used to acquire the test image displayed by the 3D module to be tested at different positions from the 3D module to be tested.

2. The 3D module calibration device according to claim 1, characterized in that: A telescopic member that can be extended and retracted along a direction parallel to the bearing portion is arranged on the bearing portion, and the telescopic member can be extended and retracted to cover a partial area of ​​the bearing portion, so that the size of the bearing portion can be controlled.

3. The 3D module calibration device according to claim 1, characterized in that: An installation groove and a covering member designed to correspond to the installation groove and having a size consistent with the size of the corresponding side wall of the load-bearing part are arranged on the side wall of the load-bearing part, and the size of the load-bearing part can be controlled by covering with the covering member.

4. The 3D module calibration device according to claim 1, characterized in that: The image acquisition module is slidably disposed above the carrying module and directly opposite to the carrying portion in a direction perpendicular to the carrying module.

5. The 3D module calibration device according to claim 1, characterized in that: It also includes a mounting frame, and the carrying module, the image processing module and the image acquisition module are all mounted on the mounting frame.

6. The 3D module calibration device according to claim 5, characterized in that: The carrying module is a carrying plate fixedly mounted in the mounting frame and arranged horizontally. A slot is provided on the carrying plate to form a carrying space for carrying the 3D module to be tested, and the carrying portion is arranged in the carrying space.

7. The 3D module calibration device according to claim 6, characterized in that: A plurality of standard test holes are provided on the carrier plate at positions on the carrier portion side, and a matching groove for installing a cylindrical lens is provided on the carrier plate below the standard test holes. The pixels corresponding to the standard test holes in the test image captured by the image acquisition module are used as standard pixels, which are compared with the pixels on the image displayed on the 3D module to be tested in the test image.

8. The 3D module calibration device according to claim 6, characterized in that: A second carrying plate is also covered below the carrying plate, the backlight source is arranged on the second carrying plate at a position corresponding to the carrying space, the carrying space and the second carrying plate together form a containing space, and the containing space is used as a carrying part for carrying the 3D module to be tested.

9. The 3D module calibration device according to claim 5, characterized in that: The outside of the mounting frame is covered with a shading piece so that an independent dark room is formed inside the mounting frame.

10. The 3D module calibration device according to claim 1, characterized in that: The image processing module is also connected to a barcode scanner, and the barcode scanner realizes the connection between the image processing module and the 3D module by scanning the corresponding code on the 3D module.

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