CN111610638A - Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment - Google Patents
Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment Download PDFInfo
- Publication number
- CN111610638A CN111610638A CN201910140594.9A CN201910140594A CN111610638A CN 111610638 A CN111610638 A CN 111610638A CN 201910140594 A CN201910140594 A CN 201910140594A CN 111610638 A CN111610638 A CN 111610638A
- Authority
- CN
- China
- Prior art keywords
- optical module
- test
- optical
- camera
- image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
Abstract
The invention provides a device and a method for testing the adjustment of an optical module in binocular head-mounted equipment. The invention collects the images of the test legends displayed by the display devices in the two optical modules respectively through the two cameras simulating human eyes, obtains the rotation angle and the inclination of the two test legend images relative to the test legend at the target position, and adjusts the angle of the optical modules by the adjusting mechanism according to the obtained rotation angle and inclination to compensate the adverse effects of the structural tolerance and the assembly tolerance of the optical modules on the imaging quality.
Description
Technical Field
The invention relates to an assembly and debugging test technology of an optical module, in particular to an assembly and debugging test device and method of an optical module in binocular head-mounted equipment.
Background
The development of systems for AR (augmented Reality for short) and VR (Virtual Reality for short) experience is promoted by various scientific technologies such as modern computer technology, display technology, sensor technology and the like, a Virtual information environment is created in a VR scene on a multi-dimensional information space, a user can have an immersive sense and have perfect interaction capacity with the environment; the AR scene applies the virtual information to the real world, and the real environment and the virtual environment are superposed to the same picture or space in real time and exist at the same time.
AR, VR head-mounted device include with the image direct projection to the display device in people's eye, the distance of display device apart from people's eye is generally less than ten centimetres, through the optical processing of specific optical module, this head-mounted device can be with the clear projection of image on the retina of people's eye, present virtual enlarged image in front of user's eye for in virtual reality, augmented reality or mixed reality's the application scene.
Binocular head-mounted device should pass through the interpupillary distance measurement before using, when user's eyeball position or dioptric system and binocular head-mounted device's optical module system can not be fine cooperation, need adjust optical module, make the user can see clear image. The pupil distance measuring device who uses in current binocular head-mounted device firstly adjusts through physics regulation and software, and the distance is realized between the optical lens of mainly adjusting display device and optical module, perhaps through adjusting the demand of display area in order to adapt to different pupil distances, no matter which kind of adjusting method, all need have an dress and transfer reference position, is about to install on binocular support two optical module according to certain people's eye pupil distance and diopter, follow-up carrying out individualized regulation according to different user's demands.
The installation and adjustment of optical module reference position in the existing binocular head-mounted equipment mainly guarantees the structural accuracy of the binocular support through controlling the machining accuracy of the binocular support, reduces the position error introduced in the assembling process through an assembling jig or a manual process, and finally rejects unqualified products with large binocular contraposition deviation through imaging detection, so that the control of the imaging quality of the binocular optical module is realized.
The main factors generally causing the assembly deviation of the optical module are the structural tolerance of the parts and the assembly tolerance in the assembly process, and the two errors are not easy to eliminate; in addition, for optical components such as lenses, aberration inevitably exists, and the existing assembly and test based on mechanical alignment cannot overcome the influence of aberration factors on the final imaging effect. Therefore, the existing optical component assembly testing process and technology often result in low product yield, low efficiency, poor product stability and consistency, and dramatically increased cost, and the existing method is not suitable for large-scale mass production.
The existing binocular head-mounted equipment mainly adopts two modes, one mode is subjective testing of human eyes, namely a tester with the same interpupillary distance and diopter wears the equipment to perceive whether the requirements of definition, comfort level and the like are met, and the mode has strong subjectivity, low precision and poor consistency; the other mode is to replace human eyes with a standardized industrial camera to detect binocular alignment precision, the mode needs to calibrate the initial position of the industrial camera for binocular detection and mainly calibrates the industrial camera through optical parameters except the industrial camera, namely, the industrial camera generally needs to use tools such as a calibration test board and a light supplement lamp, the calibration test board needs to be ensured to be uniformly exposed during testing so as to control errors of characteristic points of a shot image, the calibration process of the method is complicated, external optical conditions and calibration tools are strictly depended on, the calibration errors are difficult to quantify and control, the efficiency is low, and the consistency of products is poor.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides an assembly and adjustment testing apparatus for an optical module in a binocular head mounted device, which is used for fixing a first optical module (01) and a second optical module (02) on a binocular bracket (03) according to a reference position parameter, and comprises:
a first camera (1) and a second camera (2) for simulating a human eye structure with reference position parameters;
a first adjusting mechanism (3) and a second adjusting mechanism (4) for adjusting the rotational positions of the first optical block (01) and the second optical block (02), which include the rotation angle and the inclination amount with respect to the target position.
Further, the reference position parameters comprise a reference interpupillary distance L1 and a reference visual angle beta, and the target position refers to a position where the first optical module (01) and the second optical module (02) are respectively in the same straight line with the optical axes of the first camera (1) and the second camera (2) simulating the human eye structure with the reference position parameters.
Further, the installation and debugging test device also comprises a camera positioning mechanism used for calibrating the positions of the first camera (1) and the second camera (2) according to the reference position parameters. .
Furthermore, the camera positioning mechanism comprises a binocular optical axis simulation block for simulating a reference position parameter human eye structure.
Further, the binocular optical axis simulation block (7) is provided with a first optical axis reference hole (71) and a second optical axis reference hole (72), the distance between the central axes of the first optical axis reference hole (71) and the second optical axis reference hole (72) is a reference pupil distance L1, the reference pupil distance L1 is 55mm-75mm, and the included angle between the central axes of the first optical axis reference hole (71) and the second optical axis reference hole (72) is equal to a reference viewing angle beta.
Further, the camera positioning mechanism further includes a lighting mechanism for lighting edges of the first optical axis reference hole (71) and the second optical axis reference hole (72).
Preferably, the illumination mechanism comprises at least one of a ring light or a panel light;
the annular lamps are respectively arranged at the front side inlets of the first optical axis reference hole (71) and the second optical axis reference hole (72), and the inner diameters of the annular lamps are larger than those of the first optical axis reference hole (71) and the second optical axis reference hole (72);
the panel lamps are respectively arranged at rear side outlets of the first optical axis reference hole (71) and the second optical axis reference hole (72), and the outer diameter of the panel lamp is larger than the inner diameter of the first optical axis reference hole (71) and the inner diameter of the second optical axis reference hole (72).
Further, the binocular vision fixing device comprises a bracket fixing device (5) for fixing the binocular bracket (03).
Furthermore, the camera system further comprises a processor (6), and a first camera (1) and a second camera (2) which are connected to the processor, wherein the first optical module (01) and the second optical module (02) are respectively electrically connected to the processor (6).
Further, the first adjusting mechanism (3) and the second adjusting mechanism (4) are electrically connected to a processor (6).
The invention also provides a method for testing the installation and debugging of the optical module in the binocular head-mounted equipment, which is operated by adopting the installation and debugging testing device of the optical module in the binocular head-mounted equipment and comprises the following steps:
step S20, a first test image of the test legend imaged by the first optical module (01) and a second test image of the test legend imaged by the second optical module (02) are collected, and a first rotation angle α of the first test image relative to the reference image is acquiredLAnd a second rotation angle α of the second test image relative to the reference imageRAccording to the acquired first rotation angle αLSecond angle of rotation αRThe rotation angles of the first optical module (01) and the second optical module (02) are respectively adjusted;
step S30, a first test image of the test legend at the current position imaged by the first optical module (01) and a second test image of the test legend imaged by the second optical module (02) are collected, and a first inclination (x) of the first test image and a first inclination (x) of the second test image relative to the reference image are respectively obtainedL,yL) And a second amount of tilt (x)R,yR) (ii) a According to the obtained first inclination amount (x)L,yL) And a second amount of tilt (x)R,yR) Adjusting the inclination amounts of the first optical module (01) and the second optical module (02) respectively;
step S50, the first optical module (01) and the second optical module (02) are fixed to the binocular bracket (03).
Preferably, the test legend is a preset legend.
Further, the preset legend is a pattern formed by squares formed by rows and columns of solid circles, or line pairs, or horizontal and vertical lines, or a combination of solid circles and line pair squares, or a checkerboard or a two-dimensional code (the two-dimensional code includes a rectangular two-dimensional code and a polar two-dimensional code).
Further, in step S20, the step of acquiring the first rotation angle and the second rotation angle includes:
establishing a coordinate system by taking the central point of the test legend as an origin, the length direction of a display area of a display device of the optical module as an X-axis direction and the width direction of the display device as a Y-axis direction, and mapping the first test image, the second test image and the reference image to the same coordinate;
selecting one or more feature points from a straight line passing through an origin in a reference image, using a connecting line of any feature point and the origin in the reference image as a reference line, fitting feature point images on the reference line corresponding to the first test image or the second test image into a straight line by adopting a least square method, and using the average value of included angles between all fitted lines and the corresponding reference line as a first rotation angle αLOr second angle of rotation αR。
Further, in step S30, the step of acquiring the first inclination amount and the second inclination amount includes:
selecting characteristic points of the test legend, establishing a coordinate system by taking the central point of the test legend as an origin, the length direction of a display area of a display device of the optical module as an X-axis direction and the width direction of the display device as a Y-axis direction, and mapping the first test image, the second test image and the reference image to the same coordinate;
the coordinate system is reestablished by taking the feature point of the reference image as a new origin and taking the original X-axis and Y-axis directions as new X-axis and Y-axis directions, the inclination amounts of the same feature point of the first test image or the second test image relative to the new origin in the X-axis and the Y-axis are obtained, and the average value of the inclination amounts at all the obtained feature points is taken as a first inclination amount (X-axis inclination amount)L,yL) Or a second amount of tilt (x)R,yR)。
Further, a step S40 is included between the step S30 and the step S50, and the step S40 includes:
verifying whether the rotation angle difference and the inclination amount difference between the first optical module (01) and the second optical module (02) are within a predetermined range or not at the current position, and if so, executing step S50; if not, the steps S20 to S40 are repeatedly executed.
Preferably, the method further comprises step S10, calibrating the positions of the first camera (1) and the second camera (2) by a camera positioning mechanism.
Further preferably, in step S10, the camera positioning mechanism calibrates the positions of the first camera (1) and the second camera (2), the first camera (1) and the second camera (2) respectively capture a first optical axis reference hole (71) image and a second optical axis reference hole (72) image of the binocular optical axis simulation block (7), and the positions of the first camera (1) and the second camera (2) are adjusted until the first optical axis reference hole (71) image and the second optical axis reference hole (72) image are concentric circles.
By adopting the scheme, the invention has the following technical effects: the invention uses a double-phase machine to simulate the imaging effect of two eyes, the optical parameters of the camera simulate the reference optical parameters of human eyes, and the imaging effect is ensured to be consistent with the imaging of the human eyes, so that the imaging of the optical module meets the comfort level of the human eyes; a binocular optical axis simulation block is manufactured through the acquired reference position parameters, is used for calibrating the position of the double cameras, and is suitable for occasions of batch installation and adjustment; the method comprises the steps that a first camera and a second camera are used for respectively acquiring images of test legends displayed by display devices in a first optical module and a second optical module to obtain a first test image and a second test image, the first test image and the second test image are obtained relative to the rotation angle and the inclination of the test legend of a reference position, the first adjusting mechanism and the second adjusting mechanism are used for respectively adjusting the angles of the first optical module and the second optical module according to the obtained rotation angle and inclination to compensate the adverse effects of the structural tolerance and the assembly tolerance of other optical components of the optical module on the imaging quality, the good imaging quality is ensured, the test of the optical module is completed while the optical module is assembled, the product yield and the assembly test efficiency of finished products are improved, and the consistency of products of the binocular optical module is ensured; the assembly and debugging test device is simple to operate, stable and reliable, good in consistency and suitable for mass production requirements.
Drawings
FIG. 1A is a schematic diagram of a binocular optical axis simulation block manufacturing principle;
FIG. 1B is a schematic structural diagram of a binocular optical axis simulation block;
FIG. 2 is a schematic diagram of the structure of the camera positioning mechanism;
FIG. 3 is a front view of the camera positioning mechanism;
fig. 4 is an image example of a binocular optical axis simulation block photographed by a camera;
FIG. 5 is a schematic view of the construction of the assembly apparatus of the present invention;
FIG. 6 is a first test illustration for testing the imaging of the optical module of the present invention;
FIG. 7 is a diagram illustrating a mapping relationship between the first test pattern in the reference position and the first test pattern in the first optical module and the second optical module;
FIG. 8 is a second test pattern for testing the imaging of the optical module of the present invention;
FIG. 9 is a diagram illustrating a mapping relationship between the second test pattern in the reference position and the second test pattern of the first optical module and the second optical module on the same coordinate axis;
FIG. 10 is a third test pattern for testing the imaging of the optical module of the present invention;
FIG. 11 is a fourth test pattern for testing the imaging of the optical module of the present invention.
The reference numbers in the figures denote:
01-a first optical module, 011-a first optical component, 012-a first display device;
02-second optical module, 021-second optical assembly, 022-second display device;
03-binocular stent; 06-left eye; 07-right eye; 08-projecting a virtual image;
1-a first camera; 2-a second camera;
3-a first adjustment mechanism; 4-a second adjustment mechanism; 5-a bracket fixing device; 6-a processor;
7-binocular optical axis simulation block, 71-first optical axis reference hole, 72-second optical axis reference hole;
8-ring-shaped lamps; 9-panel light;
a-the center of the optical axis of the camera, b-the inlet profile of the reference hole, c-the outlet profile of the reference hole, d-the center of the inlet profile, and e-the center of the outlet profile.
Detailed Description
Aiming at the problem that the influence of aberration factors on the final imaging effect cannot be overcome by the existing assembly and test which take mechanical alignment as a standard, the invention provides an assembly and debugging test device and method of an optical module in binocular head-mounted equipment, wherein the method adopts two cameras to simulate two eyes, and a binocular optical axis simulation block is manufactured through the acquired reference position parameters and is used for calibrating the position of a double camera; the camera positioning mechanism comprises a binocular optical axis simulation block, the pupil distance and the visual angle in front of binocular orthophoria are simulated through a first optical axis reference hole and a second optical axis reference hole which are arranged on the binocular optical axis simulation block, and the two cameras calibrate the camera reference position by respectively shooting images of the first optical axis reference hole and the second optical axis reference hole; after the binocular optical axis simulation block is removed, the first optical module and the second optical module are placed at the position of the binocular optical axis simulation block, and the optical axis of the optical module is adjusted to be coincident with the corresponding camera optical axis; the two cameras respectively collect imaging of the test legends displayed by the corresponding display devices in the cameras, the collected images of the test legends and the collected reference images are mapped to the same coordinate system, the inclination and rotation angles of the images of the two test legends relative to the corresponding reference positions are obtained, and the corresponding optical modules are adjusted through respective adjusting mechanisms according to the obtained inclination and rotation angles, so that the rotation angle and inclination deviation between the test legend images of the corresponding optical modules obtained by the two cameras are ensured to meet the preset range.
It should be noted that in the following embodiments of the present invention, the predetermined position is not a position where the optical module achieves the best performance or the best imaging quality, and the target position is a position where the performance or the imaging quality of the optical module can be relatively best in all the positions.
The test legend is a pattern (pattern) specially designed for observing and calculating the rotation angle and the inclination of the images imaged by the first optical module and the second optical module in the binocular head-mounted device, and the test legend of the invention is preferably a test legend consisting of rows and columns of solid circles or a test legend consisting of a plurality of concentric circles and radial lines symmetrically led out from the circle center; or a test pattern consisting of a plurality of rows and columns of checkerboards or characteristic lines. Of course, the method and apparatus of the present invention are not limited to the above test patterns, and may be other suitable test patterns.
The reference image of the test legend means that when the first optical module and the second optical module are in the target positions (that is, the optical axes of the first camera and the second camera which simulate the human eye structure with the reference position parameters are in the same straight line respectively), a first test image which is obtained by imaging the test legend collected by the first camera through the first optical module and a second test image which is obtained by imaging the test legend collected by the second camera through the second optical module are mapped to the same coordinate system to be basically overlapped, and at this time, the test legend image can be used as the reference image of the test legend.
The following describes the adjustment testing device and method in the binocular head-mounted device in detail with reference to the accompanying drawings and examples.
Device for measuring the position of a moving object
Aiming at AR and VR binocular head equipment, different pupil distances of users are different, pupil distances of children are small, pupil distances of adults are large, the pupil distance of general adults is 60-73 mm, the pupil distance of women is 53-68 mm, the existing binocular head equipment generally has a pupil distance adjusting function (a specific pupil distance adjusting structure and method are not important points of attention in the application and are not explained), any binocular head equipment has a reference position, and pupil distance adjustment is performed on the basis of the reference position. The invention takes the example that when images are displayed in a binocular mode, the images are converged at a position 2 meters in front of human eyes, the included angle between two optical axes is a reference visual angle, and the reference visual angle is 1.8 degrees. The invention takes the reference position as the standard to carry out the adjustment test on the optical module in the binocular head-wearing equipment.
As shown in fig. 5, the adjusting and testing device for optical modules in binocular head-mounted equipment of the present invention includes a first camera 1 and a second camera 2 simulating two eyes, a camera positioning mechanism for calibrating the positions of the first camera 1 and the second camera 2, a first adjusting mechanism 3 and a second adjusting mechanism 4 for adjusting the positions of a first optical module 01 and a second optical module 02, respectively, and a bracket fixing device 5 for fixing a binocular bracket 03, wherein:
the first optical module 01 includes a first optical component 011 and a first display device 012; the second optical module 02 includes a second optical component 021 and a second display device 022.
The first camera 1 and the second camera 2 are used for simulating human eyes with reference position parameters, and the pupil distance and the visual angle are calibrated by utilizing a camera positioning mechanism. Fig. 1A is a schematic diagram of a principle of manufacturing the binocular optical axis simulation block 7, and fig. 1B is a schematic diagram of a structure of the binocular optical axis simulation block 7. As shown in fig. 1B, the binocular optical axis simulation block 7 includes a first optical axis reference hole 71 and a second optical axis reference hole 72 for simulating the optical axis of the imaging optical path at the time of binocular emmetropia front, wherein the distance between the central axes of the first optical axis reference hole 71 and the second optical axis reference hole 72 (the distance between the centers at the entrance of the first optical axis reference hole 71 and the second optical axis reference hole 72) is the pupil distance L1, and the adult average pupil distance L1 is selected as the reference pupil distance of the reference position at 63.5 mm.
The angle β between the central axes of the first optical axis reference hole 71 and the second optical axis reference hole 72 simulates a binocular viewing angle, which is mainly related to the focus position of the binocular module. According to the invention, the first camera 1 and the second camera 2 are adopted to simulate the left eye 06 and the right eye 07, the focusing distance of the cameras is adjusted to the virtual image distance position of the monocular module, the refraction adjustment of human eyes near 2m is comfortable in a natural state, and the monocular module is suitable for being worn by head-mounted equipment for a long time, therefore, in the embodiment, the virtual image distance is set to be 2m, the focusing distance of the cameras is adjusted to be 2m, the F number of the camera aperture is adjusted to be 2, and the entrance pupil position of the cameras is matched with the exit pupil position of the module to be measured. As shown in fig. 1, the virtual projection image 08 is located at the preset binocular focusing plane, the center of the cross mark provided on the virtual projection image 08 is the intersection point of the optical axis centers of the two cameras, the intersection point of the central axes of the first optical axis reference hole 71 and the second optical axis reference hole 72 is located at the intersection point of the cross of the virtual projection image 08, and the virtual image distance L2 (the distance between the exit pupil plane of the camera and the binocular focusing plane) of the optical module is 2 m.
Determining a reference perspective β valueAs shown in fig. 1A, when the distance between the first optical axis reference hole 71 and the second optical axis reference hole 72 of the binocular optical axis simulation block 7 is pupil distance L1 and the virtual image distance is L2, the included angle β between the first optical axis reference hole 71 and the second optical axis reference hole 72 is tan-1(L1/L2)＝tan-1(63.5/2000) ≈ 1.8 °. In this embodiment, the distance between the lens of the first camera 1 and the lens of the second camera 2 and the entrance of the first optical axis reference hole 71 and the entrance of the second optical axis reference hole 72 are 3mm, and the hole depth of the first optical axis reference hole 71 and the hole depth of the second optical axis reference hole 72 are 35mm and the diameter of the reference hole is 10mm, taking the simulation accuracy and the processing difficulty into consideration. A binocular optical axis simulation block 7 is created according to the above parameters, and the positions of the first camera 1 and the second camera 2 are calibrated by the binocular optical axis simulation block 7 so that the positions of both eyes can be simulated.
As shown in fig. 2, the camera positioning mechanism includes a binocular optical axis simulation block 7, an annular lamp 8 and a panel lamp 9, the annular lamp is disposed between the camera and the optical axis reference hole, and the light of the annular lamp can shine on the edge of the optical axis reference hole. Preferably, the ring-shaped lamps 8 are respectively disposed at front-side entrances of the first and second optical axis reference holes 71 and 72 of the binocular optical axis simulation block 7, and the inner diameters of the ring-shaped lamps 8 are larger than those of the first and second optical axis reference holes 71 and 72. The panel light is located at one side of the outlet of the optical axis reference hole (i.e. the side far away from the camera), and the light of the panel light can uniformly irradiate the one side of the outlet of the optical axis reference hole. Preferably, the panel lamps 9 are respectively disposed at rear side outlets of the first and second optical axis reference holes 71 and 72 of the binocular optical axis simulation block 7, and an outer diameter of the panel lamp 9 is larger than inner diameters of the first and second optical axis reference holes 71 and 72. The ring light 8 and the panel light 9 may be LED lights whose brightness is adjustable for lighting the first optical axis reference hole 71 and the second optical axis reference hole 72 to highlight the reference hole entrance profile b and the reference hole exit profile c. According to the perspective principle, if the camera is adjusted in place, as shown in fig. 3, the reference holes of the binocular optical axis simulation block 7 form two concentric circles with different sizes in the camera view; otherwise, as shown in fig. 4, the center d of the inlet contour of the reference hole is eccentric to the center e of the outlet contour, and is not coincident with the center a of the optical axis of the camera.
The first optical module 01 and the second optical module 02 are respectively provided with a positioning hole for temporary fixation; after the positions of the first camera 1 and the second camera 2 are adjusted in place, the first optical module 01 and the second optical module 02 are fixed on the binocular support 03 through a positioning column respectively, the positioning column extends into a positioning hole of the optical module, and the positioning column and the positioning hole are in clearance fit, so that the first optical module 01 and the second optical module 02 can rotate in a certain range under the driving of the first adjusting mechanism 3 and the second adjusting mechanism 4 respectively. The first adjusting mechanism 3 and the second adjusting mechanism 4 are provided with at least three-dimensional rotation driving mechanisms, after the first camera 1 and the second camera 2 simulating binocular parameters are adjusted in place, the optical axes of the first optical module 01 and the second optical module 02 are adjusted to coincide with the optical axes of the first camera 1 and the second camera 2 respectively, the angles of the first optical module 01 and the second optical module 02 are adjusted by the first adjusting mechanism 3 and the second adjusting mechanism 4 respectively until the design requirements are met through the acquired rotation angle and the inclination of the image of the test legend of the first optical module 01 and the second optical module 02 and the reference image respectively, and the first optical module 01 and the second optical module 02 are installed on the binocular bracket 03 after being adjusted in place.
On the basis of the above embodiments, the adjustment testing apparatus for the reference position of the optical module in the binocular head mounted device further includes a processor 6, the first camera 1, the second camera 2, the first optical module 01 and the second optical module 02 are respectively electrically connected to the processor 6, the processor 6 sends the preset test legend to the display devices of the first optical module 01 and the second optical module 02 for display, the first camera 1 and the second camera 2 respectively transmit the shot test legend images of the first optical module 01 and the second optical module 02 to the processor 6 for analysis and processing, and convert the processing results into any one or more of characters, graphics, icons, and voices for display, which is helpful for the observation and judgment of the operator, saves the observation and conversion time of the operator, and further improves the working efficiency.
Preferably, the first adjusting mechanism 3 and the second adjusting mechanism 4 are electrically connected to the processor 6, respectively, the processor 6 generates control commands according to the calculated and extracted rotation angle and inclination amount of the test legend image relative to the reference image, and sends the control commands to the driving mechanisms of the first adjusting mechanism 3 and the second adjusting mechanism 4, respectively, so that the first adjusting mechanism 3 and the second adjusting mechanism 4 drive the first optical module 01 and the second optical module 02 to the target positions (i.e. the position where the optical performance of the optical module is optimal or the position where the imaging quality of the optical module is optimal), respectively. Or manually adjust the first and second optical blocks 01 and 02 to the target positions according to the rotation angle and the inclination amount of the image of the test pattern.
The test legend in the above embodiment may be pre-stored in the processor 6, or may be generated by the processor according to given parameters.
Method of producing a composite material
The necessary camera position calibration is performed on the as yet un-calibrated setup test device prior to the setup test of the optical module reference bit. The positions of the first camera 1 and the second camera 2 are calibrated by the binocular optical axis simulation block 7 so that the optical axes of the first camera 1 and the second camera 2 coincide with the first optical axis reference hole 71 and the second optical axis reference hole 72 of the binocular optical axis simulation block 7, respectively.
Manufacturing a binocular optical axis simulation block 7 according to preset reference position parameters of an optical module, and enabling a first optical axis reference hole 71 and a second optical axis reference hole 72 of the binocular optical axis simulation block 7 to simulate the optical axis of an imaging optical path in front of binocular emmetropia, wherein the reference position parameters comprise a reference interpupillary distance L1 and a reference visual angle; the optical axes of the first camera 1 and the second camera 2 coincide with the first optical axis reference hole 71 and the second optical axis reference hole 72 of the binocular optical axis simulation block 7, respectively, and at this time, the reference hole images observed by the cameras are concentric circles.
The invention provides an assembly and debugging test method of an optical module in eye-head equipment based on the assembly and debugging test device of the optical module in the eye-head equipment, which comprises the following steps:
step S20, the first camera 1 acquires a first test image of the first optical module 01, the second camera 2 acquires a second test image of the second optical module 02, the first test image, the second test image and the reference image are mapped to the same coordinate, and a first rotation of the first test image with respect to the reference image is obtainedCorner αLAnd a second rotation angle α of the second test image relative to the reference imageRThe first adjustment mechanism 3 and the second adjustment mechanism 4 are respectively based on the acquired first rotation angle αLSecond angle of rotation αRThe rotation angles of the first optical module 01 and the second optical module 02 on a plane perpendicular to the optical axis are adjusted respectively.
Taking the first optical module 01 as an example, the first rotation angle α is obtained for the first test pattern shown in FIG. 6LThe procedure of (see fig. 7) is as follows:
the test legend is a preset legend, and the preset legend is a pattern formed by squares formed by rows and columns of solid circles or line pairs, horizontal and vertical lines, or a combination of the solid circles and the line pair squares, or a checkerboard pattern or a two-dimensional code (the two-dimensional code comprises a rectangular two-dimensional code and a polar two-dimensional code). The solid circles in rows and columns are optimally selected as a test legend, and the circle center position of the solid circle image fitting is less affected by imaging errors.
Referring to fig. 6, the circle centers of four solid circles at four corner positions of a test legend one are selected as feature points, a coordinate system is established by taking the circle center of the solid circle at the center of the test legend one as an origin, taking the circle center connecting line of the solid circles in the middle row as an X axis and taking the circle center connecting line of the solid circles in the middle row as a Y axis, and the first test image and the reference image are mapped to the same coordinate;
setting the line of sight along the optical axis direction of the first camera 1, the clockwise direction as positive, the counterclockwise direction as negative, taking the connecting line of the feature point of the reference image and the origin at each selected position as the reference line, and setting the average value of the included angles between the connecting line of the feature point of the first test image at all selected positions and the feature point of the first test image at the origin and the reference line as the first rotation angle αL。
Second Angle of rotation α for test Pattern oneRIs referred to the first rotation angle αLThe acquisition process of (1).
Taking the second optical module 02 as an example, a second rotation angle α is obtained for the second test pattern shown in FIG. 8RThe procedure of (see fig. 9) is as follows:
selecting the intersection point of the radial line of the test legend II and the concentric circle as a characteristic point, establishing a coordinate system by taking the circle center of the test legend II as an origin, the length direction of the test legend II as an X axis and the width direction of the test legend II as a Y axis, and mapping the second test image and the reference image to the same coordinate;
assuming that the line of sight is along the optical axis direction of the second camera 2, the clockwise direction is positive, and the counterclockwise direction is negative, the feature points on each radiation line in the second test image are fitted into a straight line, the least square fitting may be adopted, and the average of the included angles between all fitted lines and the radiation line of the reference image is taken as the second rotation angle αR。
For test Pattern two, first rotation angle αLIs referred to the second rotation angle αRThe acquisition process of (1).
In another embodiment, referring to fig. 10, selecting a corner point of a checkerboard in the third test legend as a feature point, establishing a coordinate system with the center point of the checkerboard in the third test legend as an origin, the length direction of the third test legend as an X axis, and the width direction of the third test legend as a Y axis, and mapping the second test image and the reference image to the same coordinate system;
setting the line of sight along the optical axis direction of the second camera 2, the clockwise direction as positive, the counterclockwise direction as negative, in the second test image, fitting the images of the feature points in any one of the X-axis direction and the Y-axis direction into a straight line respectively, and fitting by the least square method, taking the mean value of the included angles between the fitted lines of the images of the feature points in all the X-axis directions and the X-axis and the included angles between the fitted lines of the images of the feature points in all the Y-axis directions and the Y-axis as the second rotation angle αR。
For test example three, first rotation angle αLIs referred to the second rotation angle αRThe acquisition process of (1).
In another embodiment, referring to fig. 11, the intersection point of the solid lines of the test legend four is selected as a feature point, the intersection point of the solid lines located at the center in the test legend four is taken as an origin, the length direction of the test legend four is taken as an X axis, the width direction of the test legend four is taken as a Y axis, and the first test image and the reference image are mapped to the same coordinate;
setting the sight line along the optical axis direction of the first camera 1, the clockwise direction as positive, the counterclockwise direction as negative, respectively fitting the images of the feature points in any X-axis direction and any Y-axis direction in the image of the test legend four into a straight line, and fitting by using the least square method, wherein the mean value of the included angles between the fitted lines of the images of the feature points in all X-axis directions and the X-axis and the included angles between the fitted lines of the images of the feature points in all Y-axis directions and the Y-axis is used as a rotation angle αL。
Second rotation angle α for test diagram fourRIs referred to the first rotation angle αLThe acquisition process of (1).
As shown in fig. 7, the process of adjusting the rotation angle of the first optical module 01 by the first adjustment mechanism 3 is as follows:
if the line of sight is along the optical axis direction of the first camera 1, the first rotation angle αLPositive, the test legend indicating the first test image is rotated clockwise α relative to the target positionLThen the first adjustment mechanism 3 drives the first optical module 01 to rotate α in the counterclockwise directionL；
If the first rotation angle αLNegative, indicating that the first test image is rotated counterclockwise | α relative to the test legend for the target locationLThe first adjustment mechanism 3 drives the first optical module 01 to rotate clockwise | αL|。
The process of adjusting the rotation angle of the second optical module 02 by the second adjustment mechanism 4 refers to the process of adjusting the rotation angle of the first optical module 01 by the first adjustment mechanism 3.
Step S30, the first camera 1 collects a first test image of the test legend imaged by the first optical module 01, the second camera 2 collects a second test image of the test legend imaged by the second optical module 02, the first test image, the second test image and the reference image are mapped to the same coordinate, and first tilt amounts (X-axis and Y-axis directions) of the first test image and the second test image relative to the reference image are respectively obtainedL,yL) And a second amount of tilt (x)R,yR) And is composed ofThe adjusting mechanism 3 and the second adjusting mechanism 4 are adjusted according to the acquired first inclination amount (x)L,yL) And a second amount of tilt (x)R,yR) The tilt amounts of the first optical module 01 and the second optical module 02 are adjusted, respectively.
Taking the first optical module 01 as an example, the first tilt amount (x) is obtained for the first test pattern shown in FIG. 6L,yL) The process of (2) is as follows:
establishing a coordinate system by taking the center of a solid circle at the center in a test diagram I as an origin, taking a connecting line of the centers of solid circles in a middle row as an X axis and taking a connecting line of the centers of solid circles in a middle row as a Y axis, selecting two centers of the solid circles at the outermost positions on the X axis and two centers of the solid circles at the outermost positions on the Y axis as characteristic points, and mapping the first test image and the reference image to the same coordinate;
the center of a solid circle of the test legend image of the reference position at the selected position is taken as an origin, the X axis and the Y axis are the same as the original coordinate axis direction, a coordinate system is reestablished, the inclination amounts of the feature point of the first test image at each position on the X axis and the Y axis relative to the feature point (new origin) of the reference image at the position are obtained, and the average value of the inclination amounts at all the obtained feature points is taken as a first inclination amount (X-axis inclination amount)L,yL)。
For test Pattern one, second amount of Tilt (x)R,yR) Is referred to a first tilt amount (x)L,yL) The acquisition process of (1).
Taking the second optical module 02 as an example, a second tilt amount (x) is obtained for the second test pattern shown in FIG. 8R,yR) The process of (2) is as follows:
selecting the intersection point of the radial line of the test legend II and the concentric circle as a characteristic point, establishing a coordinate system by taking the circle center of the test legend II as an origin, the length direction of the test legend II as an X axis and the width direction of the test legend II as a Y axis, and mapping the second test image and the reference image to the same coordinate;
the intersection point of the concentric circle and the radial line at the position of each characteristic point is used as the origin, the X axis and the Y axis are the same as the original coordinate axis direction, and the coordinate is reestablishedThe tilt amounts of the feature points of the second test image at each position on the X-axis and the Y-axis with respect to the feature point (new origin) of the intersection of the concentric circle and the radial line at the position are acquired, and the mean value of the tilt amounts at all the acquired feature points is taken as the second tilt amount (X-tilt amount)R,yR)。
As shown in fig. 7, the process of adjusting the tilt amount of the first optical module 01 by the first adjustment mechanism 3 is as follows:
let the line of sight be along the X-axis and Y-axis respectively, if the first amount of tilt (X)L,yL) In, xLAnd yLIs positive, indicating a clockwise rotation x of the first test image about the Y axisLCounterclockwise rotation about the X-axisLThen the first adjusting mechanism 3 drives the first optical module 01 to rotate around the Y-axis counterclockwise by xLClockwise rotation about the X-axis yL；
If xLAnd yLNegative, indicating that the first test image is rotated around the Y axis by inverse pointer | xLClockwise rotation around X axis | yLIf the first adjusting mechanism 3 drives the first optical module 01 to rotate clockwise around the Y axis by | x |LCounterclockwise rotation around the X-axis | yL|；
If xLIs positive, yLNegative, indicating that the first test image rotated x around the Y axis along the indexLClockwise rotation | y around the X axisLI, the first adjusting mechanism 3 drives the first optical module 01 to rotate around the Y axis counterclockwise by xLCounterclockwise rotation | y about the X axisL|；
If xLIs negative, yLBeing positive, indicates that the first test image is rotating around the Y axis counter pointer by | xLL, counterclockwise rotation y about the X-axisLThen, the first adjustment mechanism 3 drives the first optical module 01 to rotate clockwise | x around the Y axisLL, clockwise rotation y about the X-axisL。
The process of adjusting the tilt amount of the second optical block 02 by the second adjustment mechanism 4 refers to the process of adjusting the tilt amount of the first optical block 01 by the first adjustment mechanism 3.
Verifying whether the rotation angle difference and the inclination amount difference between the first optical module (01) and the second optical module (02) are within a preset range or not at the current position, and if so, directly executing the step S50; if not, the steps S20 to S40 are repeatedly executed.
In step S40, the first camera 1 acquires a first test image of the test legend imaged by the first optical module 01, the second camera 2 acquires a second test image of the test legend imaged by the second optical module 02, the first test image, the second test image and the reference image are mapped to the same coordinate, and a first rotation angle α of the first test image relative to the reference image is acquiredLAnd a second rotation angle α of the second test image relative to the reference imageRAnd acquiring first inclination amounts (X-axis and Y-axis directions) of the first test image and the second test image with respect to the reference image, respectivelyL,yL) And a second amount of tilt (x)R,yR) Verifying the acquired first rotation angle αLSecond angle of rotation αRFirst amount of inclination (x)L,yL) And a second amount of tilt (x)R,yR) Whether the design requirements are met, namely whether the rotation angle difference and the inclination amount difference between the first optical module 01 and the second optical module 02 are within the preset ranges; if the current time is within the predetermined range, directly executing step S50; if not, the steps S20 to S40 are repeatedly executed.
Step S50, the adjusted first optical module 01 and second optical module 02 are fixed to the binocular bracket 03.
Based on the adjustment testing device and the adjustment testing method of the optical module in the binocular head-mounted equipment, the two optical modules are fixed on the binocular bracket 03, the imaging quality of the reference position of the optical module meets the design requirement, and the subjective visual perception of human eyes is met. The invention has the following beneficial effects:
(a) the adjustment testing device simulates the imaging effect of two eyes by using a biphase, and the optical parameters of the camera simulate the reference optical parameters of human eyes, so that the imaging effect is consistent with the imaging of the human eyes, and the imaging meets the comfort level of the human eyes;
(b) calculating a reference visual angle beta of the optical module according to a preset reference interpupillary distance L1 and a virtual image distance L2, and manufacturing a binocular optical axis simulation block 7 for calibrating the position of the camera, wherein the binocular optical axis simulation block is directly calibrated relative to a traditional camera, is simple to operate and is suitable for batch assembly and adjustment occasions;
(c) the method comprises the steps that a first camera 1 and a second camera 2 are used for respectively acquiring images of test legends displayed by display devices in a first optical module and a second optical module to obtain a first test image and a second test image, the rotation angle and the inclination of the first test image and the second test image relative to a reference image are obtained, the angles of the first optical module and the second optical module are respectively adjusted by a first adjusting mechanism and a second adjusting mechanism according to the obtained rotation angle and inclination to compensate the adverse effects of the structural tolerance and the assembly tolerance of other optical components of the optical module on the imaging quality, better imaging quality is ensured, the test of the optical module is completed while the optical module is assembled, the product yield and the assembly test efficiency of finished products are improved, and the consistency of optical module products is ensured;
the assembly and debugging test device is simple to operate, stable and reliable, good in consistency and suitable for mass production requirements.
It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, and that various equivalent modifications and changes may be made thereto without departing from the scope of the present invention.
Claims (18)
1. The utility model provides a test device is transferred in dress of optical module in binocular head-mounted apparatus for be fixed in binocular support (03) with first optical module (01) and second optical module (02) according to benchmark location parameter, its characterized in that includes:
a first camera (1) and a second camera (2) for simulating a human eye structure with said reference position parameters;
a first adjusting mechanism (3) and a second adjusting mechanism (4) for adjusting rotational positions of the first optical module (01) and the second optical module (02), respectively, the rotational positions including a rotation angle and an inclination amount with respect to a target position.
2. The binocular head set adjustment testing apparatus of claim 1, wherein the reference position parameters include a reference interpupillary distance L1 and a reference viewing angle β, and the target positions are positions where the first optical module (01) and the second optical module (02) are respectively in the same line with the optical axes of the first camera (1) and the second camera (2) simulating the human eye structure having the reference position parameters.
3. The binocular head set setup test apparatus of an optical module according to claim 2, further comprising a camera positioning mechanism for calibrating the positions of the first camera (1) and the second camera (2) according to the reference position parameters.
4. The binocular head set assembling and testing apparatus of optical modules of claim 3, wherein the camera positioning mechanism includes a binocular optical axis simulation block for simulating a reference position parameter eye structure.
5. The binocular head set adjustment testing device of the optical module of claim 4, wherein the binocular optical axis simulating block (7) is provided with a first optical axis reference hole (71) and a second optical axis reference hole (72), the distance between the central axes of the first optical axis reference hole (71) and the second optical axis reference hole (72) is a reference interpupillary distance L1, the reference interpupillary distance L1 is 55mm-75mm, and the included angle between the central axes of the first optical axis reference hole (71) and the second optical axis reference hole (72) is equal to the reference viewing angle β.
6. The binocular head set installation test apparatus of optical modules of claim 5, wherein the camera positioning mechanism further includes a lighting mechanism for illuminating the edges of the first optical axis reference hole (71) and the second optical axis reference hole (72).
7. The binocular head set installation testing apparatus of optical modules of claim 5 or 6, wherein the illumination mechanism includes at least one of a ring light or a panel light;
the annular lamps are respectively arranged at the front side inlets of the first optical axis reference hole (71) and the second optical axis reference hole (72), and the inner diameters of the annular lamps are larger than those of the first optical axis reference hole (71) and the second optical axis reference hole (72);
the panel lamps are respectively arranged at rear side outlets of the first optical axis reference hole (71) and the second optical axis reference hole (72), and the outer diameter of the panel lamp is larger than the inner diameter of the first optical axis reference hole (71) and the inner diameter of the second optical axis reference hole (72).
8. The binocular head set installation and adjustment test device of optical modules of claim 1 to 6, further comprising a bracket fixing device (5) for fixing the binocular bracket (03).
9. The binocular head set installation test device of optical modules in equipment according to any one of claims 1 to 6, further comprising a processor (6), wherein the first camera (1), the second camera (2), the first optical module (01) and the second optical module (02) are electrically connected to the processor (6), respectively.
10. The binocular head set installation test device of optical modules in claim 9, wherein the first adjustment mechanism (3) and the second adjustment mechanism (4) are electrically connected to the processor (6), respectively.
11. A method for testing the adjustment of an optical module in a binocular head mounted device, which is operated by the apparatus for testing the adjustment of an optical module in a binocular head mounted device according to any one of claims 1 to 10, comprising the steps of:
step S20, a first test image of the test legend imaged by the first optical module (01) and a second test image of the test legend imaged by the second optical module (02) are collected, and a first rotation angle α of the first test image relative to the reference image is acquiredLAnd a second rotation angle α of the second test image relative to the reference imageRAccording to the acquired first rotation angle αLSecond angle of rotation αRRespectively adjusting the first optical module (01) and the second optical moduleThe angle of rotation of the group (02);
step S30, a first test image of the test legend at the current position imaged by the first optical module (01) and a second test image of the test legend imaged by the second optical module (02) are collected, and a first inclination (x) of the first test image and a first inclination (x) of the second test image relative to the reference image are respectively obtainedL,yL) And a second amount of tilt (x)R,yR) (ii) a According to the obtained first inclination amount (x)L,yL) And a second amount of tilt (x)R,yR) Adjusting the inclination amounts of the first optical module (01) and the second optical module (02) respectively;
step S50, the first optical module (01) and the second optical module (02) are fixed to the binocular bracket (03).
12. The binocular head set installation testing method of optical modules in claim 11, wherein the test legend is a preset legend.
13. The binocular head set debugging test method of claim 12, wherein the predetermined legend is a graphic pattern formed by rows, columns of solid circles, or squares formed by line pairs, or horizontal and vertical lines, or a combination of solid circles and line pair squares, or a graphic pattern formed by a checkerboard or a two-dimensional code.
14. The binocular head set installation test method of any one of claims 11 to 13, wherein in the step S20, a first rotation angle α is acquiredLAnd a second angle of rotation αRComprises the following steps:
establishing a coordinate system by taking the central point of the test legend as an origin, the length direction of a display area of a display device of the optical module as an X-axis direction and the width direction of the display device as a Y-axis direction, and mapping the first test image, the second test image and the reference image to the same coordinate;
one or more feature points are selected from a straight line passing through the origin in the reference imageIn the reference image, a connecting line of any feature point and the origin is used as a reference line, the feature point images on the reference line corresponding to the first test image or the second test image are fitted into a straight line by adopting a least square method, and the mean value of included angles between all fitted lines and the corresponding reference line is used as a first rotation angle αLOr second angle of rotation αR。
15. The binocular head set installation testing method of optical modules of claim 11, wherein in step S30, a first amount of tilt (x) is obtainedL,yL) And a second amount of tilt (x)R,yR) Comprises the following steps:
selecting characteristic points of the test legend, establishing a coordinate system by taking the central point of the test legend as an origin, the length direction of a display area of a display device of the optical module as an X-axis direction and the width direction of the display device as a Y-axis direction, and mapping the first test image, the second test image and the reference image to the same coordinate;
the coordinate system is reestablished by taking the feature point of the reference image as a new origin and taking the original X-axis and Y-axis directions as new X-axis and Y-axis directions, the inclination amounts of the same feature point of the first test image or the second test image relative to the new origin in the X-axis and the Y-axis are obtained, and the average value of the inclination amounts at all the obtained feature points is taken as a first inclination amount (X-axis inclination amount)L,yL) Or a second amount of tilt (x)R,yR)。
16. The binocular head set adjustment testing method of optical modules in the binocular head set of claim 11, wherein a step S40 is further included between the step S30 and the step S50, and the step S40 includes:
verifying whether the rotation angle difference and the inclination amount difference between the first optical module (01) and the second optical module (02) are within a predetermined range or not at the current position, and if so, executing step S50; if not, the steps S20 to S40 are repeatedly executed.
17. The binocular head set setup test method of an optical module according to claim 11, further comprising a step S10 of calibrating the positions of the first camera (1) and the second camera (2) by a camera positioning mechanism.
18. The binocular head set installation testing method of the optical module according to claim 17, wherein in the step S10, the camera positioning mechanism calibrates the positions of the first camera (1) and the second camera (2) by the first camera (1) and the second camera (2) respectively taking a first optical axis reference hole (71) image and a second optical axis reference hole (72) image of the binocular optical axis simulation block (7), and adjusts the positions of the first camera (1) and the second camera (2) until the first optical axis reference hole (71) image and the second optical axis reference hole (72) image are concentric circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140594.9A CN111610638A (en) | 2019-02-26 | 2019-02-26 | Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910140594.9A CN111610638A (en) | 2019-02-26 | 2019-02-26 | Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111610638A true CN111610638A (en) | 2020-09-01 |
Family
ID=72202206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910140594.9A Pending CN111610638A (en) | 2019-02-26 | 2019-02-26 | Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111610638A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326202A (en) * | 2020-10-23 | 2021-02-05 | 歌尔光学科技有限公司 | Binocular parallax testing method, device and tool of virtual reality equipment |
| CN112326206A (en) * | 2020-11-06 | 2021-02-05 | 歌尔光学科技有限公司 | AR module binocular fusion detection device and detection method |
| CN114200624A (en) * | 2021-08-25 | 2022-03-18 | 浙江宇视科技有限公司 | Camera lens module, camera lens optical axis adjusting device and binocular camera |
| CN114252235A (en) * | 2021-11-30 | 2022-03-29 | 青岛歌尔声学科技有限公司 | Detection method and device for head-mounted display equipment, head-mounted display equipment and medium |
| CN114624005A (en) * | 2022-01-21 | 2022-06-14 | 欧拓飞科技(珠海)有限公司 | AR and VR high-precision testing equipment and detection method thereof |
| CN114795079A (en) * | 2022-05-06 | 2022-07-29 | 广州为实光电医疗科技有限公司 | Matching calibration method and device for medical endoscope double-camera module |
| WO2023110841A1 (en) | 2021-12-13 | 2023-06-22 | Loft Dynamics Ag | Validation system for virtual reality (vr) head mounted display (hmd) |
| CN116451719A (en) * | 2023-04-17 | 2023-07-18 | 笃准机器人智能科技(苏州)有限公司 | Method for identifying two-dimensional code and character code on surface of workpiece after electrophoresis |
| WO2023161224A1 (en) | 2022-02-23 | 2023-08-31 | Loft Dynamics Ag | Chromatic aberration calibration and validation system |
-
2019
- 2019-02-26 CN CN201910140594.9A patent/CN111610638A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326202A (en) * | 2020-10-23 | 2021-02-05 | 歌尔光学科技有限公司 | Binocular parallax testing method, device and tool of virtual reality equipment |
| CN112326206A (en) * | 2020-11-06 | 2021-02-05 | 歌尔光学科技有限公司 | AR module binocular fusion detection device and detection method |
| CN114200624A (en) * | 2021-08-25 | 2022-03-18 | 浙江宇视科技有限公司 | Camera lens module, camera lens optical axis adjusting device and binocular camera |
| CN114252235A (en) * | 2021-11-30 | 2022-03-29 | 青岛歌尔声学科技有限公司 | Detection method and device for head-mounted display equipment, head-mounted display equipment and medium |
| WO2023110841A1 (en) | 2021-12-13 | 2023-06-22 | Loft Dynamics Ag | Validation system for virtual reality (vr) head mounted display (hmd) |
| CN114624005A (en) * | 2022-01-21 | 2022-06-14 | 欧拓飞科技(珠海)有限公司 | AR and VR high-precision testing equipment and detection method thereof |
| WO2023161224A1 (en) | 2022-02-23 | 2023-08-31 | Loft Dynamics Ag | Chromatic aberration calibration and validation system |
| CN114795079A (en) * | 2022-05-06 | 2022-07-29 | 广州为实光电医疗科技有限公司 | Matching calibration method and device for medical endoscope double-camera module |
| CN116451719A (en) * | 2023-04-17 | 2023-07-18 | 笃准机器人智能科技(苏州)有限公司 | Method for identifying two-dimensional code and character code on surface of workpiece after electrophoresis |
| CN116451719B (en) * | 2023-04-17 | 2023-10-27 | 笃准机器人智能科技(苏州)有限公司 | Method for identifying two-dimensional code and character code on surface of workpiece after electrophoresis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111610638A (en) | Device and method for testing assembly and adjustment of optical module in binocular head-mounted equipment | |
| CN110967166B (en) | Detection method, detection device and detection system of near-eye display optical system | |
| Rolland et al. | Towards quantifying depth and size perception in virtual environments | |
| RU2322771C2 (en) | Stereo-projection system | |
| CN103842894B (en) | For measuring the method for the form geometric parameter of the individual of wearing spectacles | |
| US7740355B2 (en) | Device and method for determining optical parameters | |
| JP5814345B2 (en) | Eyepiece tool for refractive evaluation | |
| JP6212115B2 (en) | Apparatus and method for measuring objective eye refraction and at least one geometrical form parameter of a person | |
| US20110007269A1 (en) | Method and apparatus of measuring optical parameters of a person using a light field | |
| JP2007206211A (en) | Spectacle wearing simulation method and device | |
| JP2023506515A (en) | Systems and methods for determining refractive characteristics of both first and second eyes of a subject | |
| CN110160749B (en) | Calibration device and calibration method applied to augmented reality equipment | |
| CN107577065B (en) | A kind of glasses chip detection method and device based on wavefront analysis | |
| US10520751B2 (en) | Apparatus and method for determining optical parameters | |
| CN210322247U (en) | Optical module assembly and debugging testing device | |
| CN108259887A (en) | Watch point calibration method and device, blinkpunkt scaling method and device attentively | |
| CN111609995A (en) | Optical module assembly and debugging test method and device | |
| EP2268192A1 (en) | Apparatus for corneal shape analysis and method for determining a corneal thickness | |
| CN108354585A (en) | The computer implemented method of use for detecting corneal vertex | |
| CN112326206B (en) | AR module binocular fusion detection device and detection method | |
| CN103514462A (en) | Fixation line determination method, fixation line determination device, eyeball convolution point determination method and notice point determination device | |
| US6979084B2 (en) | Method for evaluating binocular performance of spectacle lenses, method for displaying binocular performance, and apparatus therefore | |
| JP3322625B2 (en) | Pseudo visual device | |
| CN209417442U (en) | The adjustment test device of optics module in binocular helmet | |
| JPH11249086A (en) | Artificial visual lens, artificial visual camera using the same and artificial visual device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |