CN219161280U - Virtual image distance testing device - Google Patents
Virtual image distance testing device Download PDFInfo
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- CN219161280U CN219161280U CN202223554796.4U CN202223554796U CN219161280U CN 219161280 U CN219161280 U CN 219161280U CN 202223554796 U CN202223554796 U CN 202223554796U CN 219161280 U CN219161280 U CN 219161280U
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- image distance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The utility model relates to the technical field of test equipment, and particularly discloses a virtual image distance test device, which comprises a bracket, a test device and a test device, wherein the bracket comprises a bracket body and a movable seat movably connected to the bracket body; the bracket body is provided with a connecting cavity, and the movable seat is provided with a placing cavity for placing the virtual image display equipment; the test piece is arranged on one side of the bracket body, and the test piece and the bracket body can be mutually close to or far away from each other; the optical module comprises a camera; the camera is arranged on the connecting cavity and is used for shooting an image of the test piece or shooting a virtual image of the test piece on the virtual image display device. The distance of the clearest imaging can be determined according to the definition of the shot picture during detection, namely the moving distance of the test piece in the shooting process is the virtual image distance of the virtual image display device, so that the virtual image distance of the virtual image display device can be effectively tested by carrying out sliding adjustment on the test piece and matching with shooting imaging.
Description
Technical Field
The utility model relates to the technical field of test equipment, in particular to a virtual image distance test device.
Background
The virtual image distance refers to the distance between the virtual image plane of the display module of the virtual image display device such as AR and VR and the pupil of the human eye, and is used for representing the imaging distance between the human eyes of the virtual image display device. In the manufacturing process, the virtual image distance of the virtual image display device is often affected by errors generated in the production or assembly process of the lens, the mold cavity and other structures, so that a certain difference exists between the actual virtual image distance and the preset virtual image distance of the virtual image display device; however, the virtual image distance is one of important optical parameters of the virtual image display device, and too far the virtual image distance can cause the human eyes to not see the content displayed by the virtual image display device clearly; conversely, too close a virtual image distance may cause a sense of oppression for the human eye when viewing the content displayed by the virtual image display device, thereby causing discomfort in appearance; therefore, in order to ensure the use effect, after the virtual image display device is processed, the virtual image distance is required to be tested, and no special virtual image distance testing device exists in the prior art.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a virtual image distance testing device which can effectively test the virtual image distance of virtual image display equipment.
In order to achieve the above object, the present utility model provides the following technical solutions:
a virtual image distance testing device, comprising:
the bracket comprises a bracket body and a movable seat movably connected to the bracket body; the support body is provided with a connecting cavity, and the movable seat is provided with a placing cavity for placing virtual image display equipment;
the test piece is arranged on one side of the bracket body, and the test piece and the bracket body can be mutually close to or far away from each other;
the optical module comprises a camera; the camera is arranged on the connecting cavity and is used for shooting an image of the test piece or shooting a virtual image of the test piece on the virtual image display device.
Optionally, the optical module further includes a first driving member; the first driving piece is fixedly arranged on the connecting cavity, and the driving end of the first driving piece is connected with the camera.
Optionally, the first driving piece includes a voice coil motor, and a driving end of the voice coil motor is connected with the camera.
Optionally, the virtual image distance testing device further includes a guide member fixedly connected to the support body, and the guide member is vertically connected to the testing member.
Optionally, the guide member is of telescopic design.
Optionally, the test piece comprises an SFR chart and a mounting seat; the SFR chart plate is fixedly arranged on one side, close to the bracket body, of the mounting seat; the telescopic end of the guide piece is connected with the mounting seat.
Optionally, the virtual image distance testing device further includes a computer, and the computer is electrically connected with the optical module; and a data processing unit for analyzing and processing the shooting data of the camera is arranged on the computer.
Optionally, the virtual image distance testing device further includes a second driving piece, the second driving piece is installed on the bracket body, and the second driving piece is in driving connection with the movable seat.
Optionally, a sliding groove is arranged on the bracket body, and the movable seat is connected to the sliding groove in a sliding way; the second driving piece comprises a driving screw rod which is rotationally connected to the sliding groove and is in threaded connection with the movable seat.
Optionally, the movable seat is rotatably connected to the bracket body; the second driving piece comprises a rotating piece, the rotating piece is installed on the support body, and the rotating end of the rotating piece is connected with the movable seat.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a virtual image distance testing device, when in detection, a virtual image display device is clamped into a preset position in a placing groove, then a movable seat is movably adjusted to adjust the virtual image display device to the position right in front of a shooting position of a camera, at the moment, the virtual image display device is arranged between the camera and a testing piece, and shooting parameters of the camera are adjusted to shoot a clearest virtual image displayed by the virtual image display device; then keeping the shooting parameters of the camera unchanged, and actively adjusting the movable seat to enable the virtual image display device to deviate to the outside of the shooting position of the camera, then moving and adjusting the test piece for a plurality of times along the preset direction, wherein the moving distance of each time is the same, and shooting the test piece after each movement by using the camera, so that the clearest imaging distance can be determined according to the definition of the shot picture, namely the moving distance of the test piece in the shooting process is the virtual image distance of the virtual image display device, and therefore, the virtual image distance of the virtual image display device can be effectively tested by moving the test piece and matching with shooting imaging; in addition, in the shooting process, the camera does not need to be moved and adjusted, so that the shooting state and the shooting quality of the camera can be ensured to be unchanged, and further the accuracy of the test is improved.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of a virtual image distance testing device provided by the utility model;
FIG. 2 is a schematic view of a structure of a bracket according to the present utility model;
FIG. 3 is an enlarged view of portion A of FIG. 2 provided by the present utility model;
fig. 4 is a schematic structural diagram of an optical module according to the present utility model.
In the above figures: 1. a virtual image display device; 2. a bracket; 21. a bracket body; 211. a connecting cavity; 212. a sliding groove; 22. a movable seat; 221. a placement cavity; 3. an optical module; 31. a camera; 32. a first driving member; 4. a test piece; 41. SFR chart board; 42. a mounting base; 5. a guide member; 6. and a computer.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the embodiments described below are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. Wherein the exemplary embodiments are described as processes or methods depicted as flowcharts; although a flowchart depicts various operations or step processes as a certain order, many of the operations or steps can be performed in parallel, concurrently or simultaneously, and the order of the various operations can be rearranged. When its operations or steps are completed, the corresponding process may be terminated, and there may be additional steps not included in the drawings. The processes described above may correspond to methods, functions, procedures, subroutines, and the like, and embodiments of the utility model and features of the embodiments may be combined with one another without conflict.
The term "comprising" and variants thereof as used herein is intended to be open ended, i.e., including, but not limited to. The term "based on" is based at least in part on. The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings; it is to be understood that for convenience of description, only some, but not all of the structures relevant to the present utility model are shown in the drawings.
Referring to fig. 1 to 4, an embodiment of the present utility model provides a virtual image distance testing device, including:
the bracket 2, the bracket 2 includes a bracket body 21 and a movable seat 22 movably connected to the bracket body 21; the bracket body 21 is provided with a connecting cavity 211, and the movable seat 22 is provided with a placing cavity 221 for placing the virtual image display device 1;
the test piece 4, the test piece 4 is set up in one side of the support body 21, the test piece 4 can be close to or keep away from each other with the support body 21;
an optical module 3, the optical module 3 including a camera 31; the camera 31 is provided on the connection cavity 211 for photographing an image of the test piece 4 or photographing a virtual image of the test piece 4 on the virtual image display apparatus 1.
According to the above scheme, during detection, the virtual image display device 1 is clamped into the preset position in the placement groove 221, then the movable seat 22 is movably adjusted to adjust the virtual image display device 1 to the position right in front of the shooting position of the camera 31, at this time, the virtual image display device 1 is placed between the camera 31 and the test piece 4, and then the shooting parameters of the camera 31 are adjusted to shoot the clearest virtual image displayed by the virtual image display device 1; then keeping the shooting parameters of the camera 31 unchanged, and actively adjusting the movable seat 22 to enable the virtual image display device 1 to deviate from the shooting position of the camera 31, then moving and adjusting the test piece 4 for a plurality of times along the preset direction, wherein the moving distance of each time is the same, and shooting the test piece 4 after each time movement by using the camera 31, so that the clearest imaging distance can be determined according to the definition of the shot picture, namely, the moving distance of the test piece 4 in the shooting process is the virtual image distance of the virtual image display device 1, and therefore, the virtual image distance of the virtual image display device 1 can be effectively tested by moving the test piece 4 and matching with shooting imaging; in addition, in the shooting process, the camera 31 does not need to be moved and adjusted, so that the shooting state and the shooting quality of the camera are not changed, and the accuracy of the test is improved.
Further, in order to facilitate driving adjustment of the camera 31 so that the center position of the camera 31 is just opposite to the center of the virtual image display device 1, so that no matter what specification the virtual image display device 1 is, the center of the camera 31 can be aligned to facilitate finding the optimal virtual image position, the optical module 3 further includes a first driving member 32; the first driving member 32 is fixedly disposed on the connecting cavity 211, and a driving end of the first driving member 32 is connected with the camera 31.
Specifically, in order to be able to quickly drive and adjust the camera 31 to meet the use requirement, the first driving member 32 includes a voice coil motor, and the driving end of the voice coil motor is connected with the camera 31. In the present embodiment, the voice coil motor is preferably a linear voice coil motor, so that driving adjustment in the vertical direction can be performed on the camera 31 to adjust the height position of the camera 31.
Further, in order to facilitate the parallel movement of the test piece 4, the virtual image distance testing device further includes a guide piece 5, wherein the guide piece 5 is fixedly connected to the bracket body 21, and the guide piece 5 is vertically connected with the test piece 4; the test piece 4 is slidably coupled to the side of the holder body 21 through the guide 5.
Specifically, the guide piece 5 is of a telescopic structure design; in this embodiment, the guide member 5 may be a general telescopic column structure, so that the test member 4 can be moved along the telescopic direction of the guide member 5 by applying an external force to the test member 4; the guide member 5 may also be an electric telescopic rod structure, so that the test member 4 can be automatically driven and adjusted to meet the use requirement.
Specifically, in order to facilitate the shooting operation by the camera 31 to meet the use requirement, the test piece 4 includes an SFR chart 41 and a mount 42; the SFR chart 41 is fixedly arranged on one side, close to the bracket body 21, of the mounting seat 42, and scale values are arranged on the SFR chart 41; the telescopic end of the guide 5 is connected to the mounting seat 42.
Further, in order to facilitate analysis processing of the picture shot by the camera 31, and further facilitate rapid and accurate determination of the virtual image distance of the virtual image display device 1, the virtual image distance testing device further includes a computer 6, where the computer 6 is electrically connected with the optical module 3; the computer 6 is provided with a data processing unit for analyzing and processing the photographed data of the camera 31.
In this embodiment, the image software is set on the computer 6, and the serial pictures shot by the camera 31 in the moving process of the test piece 4 (at least consistent pictures are shot once when the test piece 4 moves) are analyzed and processed by the image software, so that the SFR fitting value can be obtained, and the distance corresponding to the peak value after SFR fitting is the virtual image distance, so that the virtual image distance of the virtual image display device 1 can be rapidly and accurately determined by the image software, without manually determining the virtual image distance, and the method is simple, convenient and rapid.
Further, in order to facilitate the movable adjustment of the movable seat 22 to meet the requirement of use, the virtual image distance testing device further includes a second driving member (not shown in the figure), which is mounted on the support body 21 and is in driving connection with the movable seat 22.
Specifically, in one embodiment of the present utility model, the bracket body 21 is provided with a sliding groove 212, the sliding groove 212 is vertically arranged, and the movable seat 22 is slidably connected to the sliding groove 212; the second driving piece comprises a driving screw rod which is rotatably connected to the sliding groove 212 and is in threaded connection with the movable seat 22; therefore, the movable seat 22 can be driven to lift and slide for adjustment by rotating the adjusting driving screw, so that the virtual image display device 1 in the placing cavity 221 is opposite to or deviated from the camera 31, and the use requirement is met.
In this embodiment, the drive screw may be automatically driven by a motor or may be manually driven by a handle.
Specifically, in another embodiment of the present utility model, the movable seat 22 is rotatably connected to the bracket body 21; the second driving member includes a rotating member, the rotating member is mounted on the bracket body 21, and a rotating end of the rotating member is connected with the movable seat 22.
In this embodiment, the rotating member may be a rotating motor or a rotating cylinder, and the rotating end of the rotating member rotates to drive the movable seat 22 to rotate, so that the virtual image display device 1 in the placement cavity 221 can rotate to a position opposite to or deviating from the camera 31, so as to meet the use requirement.
The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A virtual image distance testing device, characterized by comprising:
the bracket (2) comprises a bracket body (21) and a movable seat (22) movably connected to the bracket body (21); a connecting cavity (211) is formed in the support body (21), and a placing cavity (221) for placing the virtual image display device (1) is formed in the movable seat (22);
the test piece (4) is arranged on one side of the support body (21), and the test piece (4) and the support body (21) can be mutually close to or far away from each other;
an optical module (3), the optical module (3) comprising a camera (31); the camera (31) is arranged on the connecting cavity (211) and is used for shooting an image of the test piece (4) or shooting a virtual image of the test piece (4) on the virtual image display device (1).
2. A virtual image distance testing device according to claim 1, wherein the optical module (3) further comprises a first driving member (32); the first driving piece (32) is fixedly arranged on the connecting cavity (211), and the driving end of the first driving piece (32) is connected with the camera (31).
3. A virtual image distance testing device according to claim 2, characterized in that the first driving member (32) comprises a voice coil motor, the driving end of which is connected to the camera (31).
4. A virtual image distance testing device according to claim 1, further comprising a guide member (5), said guide member (5) being fixedly connected to said holder body (21), said guide member (5) being vertically connected to said testing member (4).
5. A virtual image distance testing device according to claim 4, characterized in that the guide (5) is of telescopic design.
6. A virtual image distance testing device according to claim 5, characterized in that the test piece (4) comprises an SFR chart board (41) and a mounting seat (42); the SFR chart board (41) is fixedly arranged on one side, close to the bracket body (21), of the mounting seat (42); the telescopic end of the guide piece (5) is connected with the mounting seat (42).
7. A virtual image distance testing device according to claim 1, further comprising a computer (6), the computer (6) being electrically connected to the optical module (3); the computer (6) is provided with a data processing unit for analyzing and processing the shooting data of the camera (31).
8. A virtual image distance testing device according to claim 1, further comprising a second driving member mounted on the stand body (21), the second driving member being in driving connection with the movable seat (22).
9. A virtual image distance testing device according to claim 8, wherein the bracket body (21) is provided with a sliding groove (212), and the movable seat (22) is slidably connected to the sliding groove (212); the second driving piece comprises a driving screw rod which is rotatably connected to the sliding groove (212) and is in threaded connection with the movable seat (22).
10. A virtual image distance testing device according to claim 8, characterized in that said movable seat (22) is rotatably connected to said support body (21); the second driving piece comprises a rotating piece, the rotating piece is arranged on the bracket body (21), and the rotating end of the rotating piece is connected with the movable seat (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554796.4U CN219161280U (en) | 2022-12-29 | 2022-12-29 | Virtual image distance testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223554796.4U CN219161280U (en) | 2022-12-29 | 2022-12-29 | Virtual image distance testing device |
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| CN219161280U true CN219161280U (en) | 2023-06-09 |
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| CN202223554796.4U Active CN219161280U (en) | 2022-12-29 | 2022-12-29 | Virtual image distance testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718357A (en) * | 2023-08-09 | 2023-09-08 | 昆山迈致治具科技有限公司 | Virtual image distance testing method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718357A (en) * | 2023-08-09 | 2023-09-08 | 昆山迈致治具科技有限公司 | Virtual image distance testing method and device |
| CN116718357B (en) * | 2023-08-09 | 2023-10-27 | 昆山迈致治具科技有限公司 | Virtual image distance testing method and device |
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