CN219592478U - Automatic test equipment for micro-projection optical machine of head-mounted display equipment - Google Patents
Automatic test equipment for micro-projection optical machine of head-mounted display equipment Download PDFInfo
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- CN219592478U CN219592478U CN202320526511.1U CN202320526511U CN219592478U CN 219592478 U CN219592478 U CN 219592478U CN 202320526511 U CN202320526511 U CN 202320526511U CN 219592478 U CN219592478 U CN 219592478U
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Abstract
The utility model relates to automatic testing equipment of a micro-projection optical machine of head-mounted display equipment, which comprises a testing panel, a camera module and a control module; the automatic test equipment for the micro-projection optical machine further comprises two or more test bits, the test bits are used for installing the micro-projection optical machine, the test bits and the camera shooting module are positioned on the same side of the test panel, the control module is used for analyzing and comparing the optical information and the image information of the projection pictures projected by the two micro-projection optical machines, and controlling and adjusting the parameters of the two micro-projection optical machines according to set parameters, so that the parameters of the micro-projection optical machines meet preset consistency requirements, automatic test is realized, and production of a production line is convenient.
Description
Technical Field
The utility model relates to the technical field of head-mounted display equipment, in particular to automatic testing equipment for a micro-projection optical machine of the head-mounted display equipment.
Background
A head-mounted display device, such as VR (virtual Reality) glasses, AR (Augmented Reality) glasses or MR (Mixed Reality) glasses, adopts a near-eye display technology, and enlarges an image on a display module through a set of optical systems to project the image on a retina, so that a user can watch display contents after wearing the head-mounted display device, and the user can control the display contents in the head-mounted display device through interaction with the head-mounted display device.
Along with the development of technology, the light and thin and portable head-mounted display devices gradually become mainstream demands, and the scheme of optical waveguide display is becoming common, wherein the principle of optical waveguide display is that a micro display screen or a micro projector projects light to one side of an optical waveguide, and the light can be internally reflected and spread in an optical waveguide lens through the principle of total internal reflection and then reflected out of the optical waveguide lens and finally reflected into eyes of a user.
In the process of assembling and producing a micro display screen or a micro projection optical machine of the head-mounted display device, only a photosensitive device is used for carrying out projection test on the micro projection optical machine, but the photosensitive device can only be locally arranged, so that the test range is limited, and the projection effect cannot be comprehensively detected.
Disclosure of Invention
Based on the above, the utility model aims to provide the automatic test equipment for the micro-projection optical machine of the head-mounted display equipment, which is reasonable in design, adopts the camera module, can collect projection information, and is matched with the photosensitive device to realize the detection of the micro-projection optical machine of the head-mounted display equipment.
An automatic test equipment of a micro-projection optical machine of a head-mounted display device comprises a test panel, a camera module and a control module;
the test panel is uniformly provided with a plurality of photosensitive devices, the photosensitive devices are respectively connected with the control module in a signal manner, and the photosensitive devices are used for acquiring optical information of the corresponding positions of the projection pictures on the test panel and transmitting the acquired optical information to the control module;
the camera module is in signal connection with the control module, the camera module is provided with a camera and an image output end, the camera faces the test panel, the camera module is connected with the control module through the image output end, the camera module can acquire a projection picture on the test panel, and the acquired image information is transmitted to the control module through the image output end;
the automatic test equipment of the micro-projection optical machine further comprises two or more test positions, wherein the test positions are used for installing the micro-projection optical machine, and the test positions and the camera module are located on the same side of the test panel.
The control module can be matched with image recognition software, compares optical information and image information of projection pictures projected by the micro-projection light machines, and controls and adjusts parameters of the micro-projection light machines according to set parameters so that the micro-projection light machines meet preset consistency requirements.
According to the embodiment of the utility model, the plurality of photosensitive devices are arranged on the test panel, and when the micro-projection optical machine of the head-mounted display device respectively projects the projection pictures to the test panel, the photosensitive devices can sense the optical information of the projection pictures corresponding to the positions of the photosensitive devices and transmit the optical information to the control module; in addition, through the arrangement of the camera module, the image information of the projection picture can be obtained in real time and transmitted to the control module; the control module is arranged by matching with a preset program, preset parameters and the like, compares optical information and image information of a projection picture transmitted by the photosensitive device and the camera module, evaluates whether the uniformity of the optical information of the projection picture reaches a set specification by a preset algorithm program, and controls and adjusts the parameter difference value of the micro-projection optical machine according to the set parameters by comparing the projection picture of each micro-projection optical machine, so that the display parameters of each micro-projection optical machine reach the set requirements, and obvious difference visible to human eyes is avoided.
Further, each test position is provided with a micro-projection optical machine fixing tool, and the micro-projection optical machine fixing tools are used for fixing the micro-projection optical machine to be tested.
Furthermore, the test panel is provided with a plurality of projection test surfaces, and the projection test surfaces are in one-to-one correspondence with the test positions.
Furthermore, the camera module is provided with a plurality of camera modules, the camera modules are in one-to-one correspondence with the test sites, the same group of projection test surfaces, the camera modules and the micro-projection optical machine fixing tools form a test structure, and the arrangement modes of adjacent test structures are the same or mirror symmetry.
Further, the number of the test structures is two, and the arrangement modes of the two test structures are mirror symmetry.
Furthermore, the photosensitive devices on the projection test surface are arranged on the test panel in an array, and the number of the photosensitive devices on the projection test surface is at least 9.
Further, the photosensitive device includes a photometric sensor and a photometric-colorimetric sensor.
Further, the test panel has a diffuse reflective surface to better display the projected image, facilitating image acquisition by the camera module.
Further, the camera module is a human-eye-imitating camera, so that the imaging of the user's eyes on a projection picture can be better simulated.
Further, the Micro-projector is a Micro-LED, a Micro-OLED, an LCoS or a DPL projector.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
Fig. 1 is a schematic diagram of an automatic test equipment for micro-projection optical machine of a head-mounted display device according to embodiment 1 of the present utility model;
FIG. 2 is a schematic diagram of the test panel, two micro-projection optical machines and two camera modules during the test in embodiment 1 of the present utility model;
fig. 3 is a schematic view illustrating an arrangement of a photosensitive device according to embodiment 1 of the present utility model.
Detailed Description
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Example 1
Referring to fig. 1, fig. 1 is a schematic structural diagram of an automatic test device for a micro-projection optical engine of a head-mounted display device according to embodiment 1 of the present utility model, and as shown in the drawing, embodiment 1 of the present utility model provides an automatic test device for a micro-projection optical engine of a head-mounted display device, which includes a test panel 1, a camera module 2 and a control module 3;
a plurality of photosensitive devices 5 are uniformly arranged on the test panel 1, the plurality of photosensitive devices 5 are respectively connected with the control module 3 in a signal manner, and the photosensitive devices 5 are used for acquiring optical information of corresponding positions of projection pictures on the test panel 1 and transmitting the acquired optical information to the control module 3;
the camera module 2 is in signal connection with the control module 3, the camera module is provided with a camera and an image output end, the camera faces the test panel, the camera module is connected with the control module through the image output end, and in the test process, the camera module 2 can acquire a projection picture on the test panel 1 and transmit the acquired image information to the control module 3;
the automatic test equipment of the micro-projection optical machine also comprises two or more test positions, wherein the test positions are used for installing the micro-projection optical machine, and the test positions and the camera module are positioned on the same side of the test panel;
in the embodiment of the utility model, two micro-projection optical machines 4 are arranged in total at two test positions, the two micro-projection optical machines 4 are respectively arranged on the test positions, and during the test, the two micro-projection optical machines 4 respectively project projection pictures on the test panel 1;
the control module 3 is used for analyzing and comparing the optical information and the image information of the projection pictures projected by the two micro-projection optical machines 4, and controlling and adjusting the parameters of the two micro-projection optical machines 4 according to the set parameters so as to enable the parameters to meet the preset consistency requirement.
In the embodiment 1 of the utility model, by arranging a plurality of photosensitive devices 5 on the test panel 1, when two micro-projection optical machines 4 of the head-mounted display device respectively project projection pictures to the test panel 1, the photosensitive devices 5 can sense the optical information of the projection pictures corresponding to the positions of the photosensitive devices and transmit the optical information to the control module 3; in addition, through the arrangement of the camera module 2, the image information of the projection picture can be obtained in real time and transmitted to the control module 3; the control module 3 is set by a preset program, preset parameters and the like, compares optical information and image information of the projection pictures transmitted by the photosensitive device 5 and the camera module 2, evaluates whether the uniformity of the optical information of the projection pictures reaches a set specification by a preset algorithm program, projects pictures by comparing two micro-projection optical machines 4, and enables the display parameters of the two micro-projection optical machines 4 to reach set requirements by adjusting the parameter difference value of the micro-projection optical machines 4 according to the set parameters.
Optionally, each test site is provided with a micro-projection optical machine fixing tool, and the micro-projection optical machine fixing tool is used for fixing the micro-projection optical machine 4 to be tested.
The micro-projector fixing tool is used for fixing the micro-projector 4, so that the micro-projector 4 can be stably installed at a test position and projects to the test panel 1.
In particular, the test panel 1 is provided with a plurality of projection test surfaces 11, and the projection test surfaces 11 are in one-to-one correspondence with the test positions.
In the embodiment of the utility model, the test panel 1 is provided with two side-by-side projection test surfaces 11, and the projection test surfaces 11 are in one-to-one correspondence with the test positions, so that the micro-projection optical machines at the two test positions can respectively project onto the projection test surfaces 11 to realize side-by-side detection.
In particular, the camera module 2 is provided with a plurality of camera modules 2, the camera modules 2 are in one-to-one correspondence with the test sites, the same group of projection test surfaces 11, the camera modules 2 and the micro-projection optical machine fixing tool form a test structure, and the arrangement modes of adjacent test structures are the same or mirror symmetry.
Taking the monocular micro-projection optical machine 4 as an example for consistency production, at this time, as only the monocular is required to be subjected to environment simulation, the arrangement mode of the test structures can be set to be the same structure, and the relative positions of the micro-projection optical machine 4, the camera module 2 and the projection test surface 11 of each test structure are ensured to be fixed, so that in one test process, a plurality of micro-projection optical machines 4 can be tested simultaneously, projection information can be collected simultaneously by matching with the camera module 2 and the control module 3, consistency adjustment of a plurality of micro-projection optical machines 4 can be realized by matching with debugging software, the problem that in the prior art, the display performance of the product is influenced because the consistency requirement is difficult to be achieved due to production precision control, and the consistency requirement is difficult to be achieved due to the display effect of the product can be matched with automatic detection and control equipment, and the simultaneous test of a plurality of micro-projection optical machines 4 in the production process can be realized.
In particular, the number of the test structures is two, and the arrangement modes of the two test structures are mirror symmetry.
The micro-projection optical machines of the left eye and the right eye in the head-mounted display device are arranged in a mirror symmetry mode, so that when the test is performed, if the arrangement modes of the test structures are the same, the two micro-projection optical machines 4 cannot be effectively tested and adjusted according to the left eye and the right eye modes.
Therefore, when left and right eyes are debugged, the arrangement mode of the two test structures of the embodiment of the utility model adopts mirror symmetry, simulates the relative positions of the micro-projection optical machine 4 and human eyes in the head-mounted display device, and further simulates the watching environment of the left and right eyes of an actual person, and tests. Based on the structure, simulation of left and right eye scenes of a person can be realized, and obvious differences of the eyes can be avoided by matching with corresponding debugging software, so that the device can realize the aim of high consistency of binocular definition after being applied to head-mounted display equipment, can prevent dizziness caused by severe correction of the eyes due to image deviation when the person sees the images, optimizes picture overlap ratio, realizes automatic test, is convenient for production in a production line, can realize display definition and other parameter settings, and can realize various calibration and test of derivations, and better overlap and even fusion on real objects and virtual images.
Alternatively, the Micro projector 4 is a Micro-LED, micro-OLED, LCoS or DPL projector.
Optionally, the photosensitive device 5 includes a photometric sensor and a photometric-colorimetric sensor; the optical information includes at least one of luminance information, chrominance information, and contrast information; as an alternative, the number of the photosensitive devices 5 is at least 9, and preferably 9 to 16, referring to fig. 3, fig. 3 is a schematic diagram of the photosensitive device arrangement in embodiment 1 of the present utility model, as shown in the drawing, specifically 9 in this embodiment, the photosensitive devices 5 are arranged in an array on the test panel 1, so that the distribution uniformity is better, and the optical information of the projection image can be detected more accurately.
Alternatively, the test panel 1 may be a projection curtain or a dedicated panel with a diffusely reflective surface to better display the projected image and facilitate image acquisition by the camera module 2.
Alternatively, the control module 3 may be a computer or other programmable logic controller or the like that internally stores instructions for performing operations such as logic operations, sequential control, timing, counting, and arithmetic operations.
Optionally, the camera module 2 is a human-eye-simulated camera, so that the imaging of the user's eyes on the projection picture can be better simulated. The two micro-projector (4) are arranged in front of the test panel (1) side by side, the number of the camera modules (2) is 2, the camera modules are correspondingly positioned on one side of the micro-projector (4) far away from the test panel (1), human eye environment is simulated, human eye vision simulation is performed on image information of two obtained projection pictures, and accordingly human eye feeling is referred to, and effective detection and adjustment are performed.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.
Claims (10)
1. An automatic test equipment of micro-projection ray machine of head-mounted display equipment, its characterized in that: the device comprises a test panel, a camera module and a control module;
the test panel is uniformly provided with a plurality of photosensitive devices, the photosensitive devices are respectively connected with the control module in a signal manner, and the photosensitive devices are used for acquiring optical information of the corresponding positions of the projection pictures on the test panel and transmitting the acquired optical information to the control module;
the camera module is in signal connection with the control module, the camera module is provided with a camera and an image output end, the camera faces the test panel, the camera module is connected with the control module through the image output end, the camera module can acquire a projection picture on the test panel, and the acquired image information is transmitted to the control module through the image output end;
the automatic test equipment of the micro-projection optical machine further comprises two or more test positions, wherein the test positions are used for installing the micro-projection optical machine, and the test positions and the camera module are located on the same side of the test panel.
2. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 1, wherein: each test position is provided with a micro-projection optical machine fixing tool, and the micro-projection optical machine fixing tools are used for fixing the micro-projection optical machine to be tested.
3. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 2, wherein: the test panel is provided with a plurality of projection test surfaces, and the projection test surfaces are in one-to-one correspondence with the test positions.
4. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 3, wherein: the camera module is provided with a plurality of camera modules, the camera modules are in one-to-one correspondence with the test positions, the same group of projection test surfaces, the camera modules and the micro-projection optical machine fixing tool form a test structure, and the arrangement modes of adjacent test structures are identical or mirror symmetry.
5. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 4, wherein: the number of the test structures is two, and the arrangement modes of the two test structures are mirror symmetry.
6. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 4, wherein: the light sensing devices on the projection test surface are arranged on the test panel in an array mode, and the number of the light sensing devices on the projection test surface is at least 9.
7. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 1, wherein: the photosensitive device includes one or more of a photometric sensor and a photometric-colourmetric sensor.
8. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 1, wherein: the test panel has a diffusely reflective surface.
9. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 1, wherein: the camera module is a human-eye-simulated camera.
10. The automatic test equipment for micro-projection optical machine of head-mounted display equipment according to claim 1, wherein: the Micro-projector is a Micro-LED, a Micro-OLED, an LCoS or a DPL projector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320526511.1U CN219592478U (en) | 2023-03-16 | 2023-03-16 | Automatic test equipment for micro-projection optical machine of head-mounted display equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320526511.1U CN219592478U (en) | 2023-03-16 | 2023-03-16 | Automatic test equipment for micro-projection optical machine of head-mounted display equipment |
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| CN219592478U true CN219592478U (en) | 2023-08-25 |
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| CN202320526511.1U Active CN219592478U (en) | 2023-03-16 | 2023-03-16 | Automatic test equipment for micro-projection optical machine of head-mounted display equipment |
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