CN111781698A - Virtual display measuring and installing system - Google Patents
Virtual display measuring and installing system Download PDFInfo
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- CN111781698A CN111781698A CN202010671555.4A CN202010671555A CN111781698A CN 111781698 A CN111781698 A CN 111781698A CN 202010671555 A CN202010671555 A CN 202010671555A CN 111781698 A CN111781698 A CN 111781698A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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Abstract
The invention discloses a virtual display testing and assembling system which comprises a virtual display module to be tested, a rotating mechanism, a clamping mechanism, a displacement adjusting mechanism, a vacuum chuck mechanism, a module fixing mechanism to be tested, a camera module, a position detection module and a display control module, wherein the vacuum chuck mechanism comprises a chuck, a chuck connecting structure, a vacuum suction pipe and a vacuum pump, and the chuck connecting structure is of a hollow structure; the virtual display module assembly that awaits measuring includes first mirror group and second subassembly, and the second subassembly includes second border group, image display device, image display control module group and assembly structure, and the module fixed establishment that awaits measuring is used for fixed mounting the second subassembly of the virtual display module assembly that awaits measuring, the module setting of making a video recording is in sucking disc connection structure with in the hollow structure between the fixture. The virtual display module to be tested, the rotating mechanism, the displacement adjusting mechanism, the vacuum chuck mechanism, the camera module and the position detection module are respectively in communication connection with the display control module.
Description
Technical Field
The invention relates to the technical field of virtual reality, in particular to a virtual display test system.
Background
At present, a near-eye display device, such as a virtual reality display device, is developed towards a light and thin direction, a display module in the virtual display device, as shown in fig. 2, is a structural schematic diagram of a catadioptric optical system of the current virtual display module, and includes an image display device 122, a reflective-transmissive element 121, and a first lens group 11, where the first lens group 11 includes a 1/4 phase delay element 113, a polarization transflective element 112, and an imaging lens group 111 that are sequentially glued together, an image beam emitted from the image display device 122 is a circularly polarized beam, a fast axis of the 1/4 phase delay element and a main axis (a long axis or a short axis) of the circularly polarized beam form an angle of 45 degrees, a transmission axis of the polarization transflective element and a fast axis of the 1/4 phase delay element form an angle of 45 degrees, the circularly polarized beam emitted from the image display device 122 is converted into a linearly polarized beam with a polarization direction perpendicular to the transmission axis of the polarization transflective element after passing through, the reflected linearly polarized light beam passes through the 1/4 phase delay element again and is converted into a circularly polarized light beam, and the light beam reflected by the circularly polarized light beam and transmitted through the 1/4 phase delay element again is converted into a linearly polarized light beam with the polarization direction parallel to the transmission axis of the polarization transflective element and is received by human eyes. Folding of the optical path is achieved by using 1/4 phase retarding elements and polarization transflective elements such that the optical path reflects twice between the transflective and polarization transflective elements, resulting in a reduced module thickness. An image on the image display device is projected as a double virtual image after passing through the optical path folding group, wherein the virtual image projected after the optical path folding group is folded and reflected (indicated by a solid line in fig. 2) is a main virtual image, and the virtual image projected by the direct transmission optical path folding group (indicated by a dotted line in fig. 2) is an interference virtual image.
Theoretically, the brightness of the interference virtual image is close to zero, however, since the image light beams emitted by the image display devices are not circularly polarized light but elliptically polarized light with a certain ellipticity, and the ellipticity of the light beams emitted by each image display device is not exactly the same, and the light-reflecting and transmitting element is an optical injection lens, different injection lenses have different internal stresses, a birefringence effect is generated, and the ellipticity of the transmitted light and the reflected light is affected, meanwhile, the manufacturing process of the 1/4 phase delay element, the composition of the adhesive between the phase delay element and the polarization transflective element and the process of the adhesive all affect the phase delay amount of the 1/4 phase delay element, so that the absolute phase difference of 90 degrees cannot be generated on the incident light beams, and the fact that the influence degree of the interference virtual image on the main image is changed along with the change when the first lens 11 rotates around the optical axis virtual image OG1 at different angles is found in, generally, in the assembling process, by rotating the first mirror group, human eyes observe interference virtual images and main virtual images at different rotation angles, the first mirror group is fixed after the angle position of the minimum interference influence degree is obtained, and the optical display module is assembled. Because there are differences in visual characteristics of different assemblers and the influence of subjective factors during judgment, the display effect of the finally completed optical display module has inconsistency, and is not favorable for batch assembly.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a virtual display assembling system, which can rapidly and effectively assemble a first lens group without introducing subjective judgment factors, and does not generate stains, such as fingerprints and dust, on an optical lens group, and is suitable for mass assembly production of optical display modules to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a virtual display testing and assembling system which comprises a virtual display module to be tested, a rotating mechanism, a clamping mechanism, a displacement adjusting mechanism, a vacuum chuck mechanism, a module fixing mechanism to be tested, a camera module, a position detection module and a display control module, wherein the vacuum chuck mechanism comprises a chuck, a chuck connecting structure, a vacuum suction pipe and a vacuum pump, and the chuck connecting structure is of a hollow structure; the virtual display module assembly that awaits measuring includes first mirror group and second subassembly, and the second subassembly includes second border group, image display device, image display control module group and assembly structure, the module fixed establishment that awaits measuring is used for fixed mounting the second subassembly of the virtual display module assembly that awaits measuring, the module setting of making a video recording is in sucking disc connection structure with in the hollow structure between the fixture. The virtual display module to be detected, the rotating mechanism, the displacement adjusting mechanism, the vacuum chuck mechanism, the camera module and the position detection module are respectively in communication connection with the display control module.
Optionally, the sucking disc includes that at least three little sucking discs are constituteed, and this at least three little sucking disc annular distribution sets up on sucking disc connection structure, the last hollow out construction that is provided with of fixture.
Optionally, the sucker is a single sucker, a portion of the sucker in contact with the first lens group is annular, and a portion of the sucker in contact with the sucker connecting structure is transparent and transparent to visible light;
optionally, the rotating mechanism and the displacement adjusting mechanism are arranged on the module to be tested fixing mechanism, and the vacuum chuck mechanism is arranged on the clamping mechanism.
Optionally, the rotating mechanism is arranged on the clamping mechanism, the vacuum chuck mechanism is arranged on the rotating mechanism, the rotating mechanism is of a hollow structure, and the displacement adjusting mechanism is arranged on the module to be measured fixing mechanism.
Optionally, the displacement adjusting mechanism includes a one-dimensional displacement mechanism and a two-dimensional displacement mechanism, the rotating mechanism is disposed in the two-dimensional displacement mechanism, the one-dimensional displacement mechanism is disposed on the fixing mechanism of the module to be tested, and the vacuum chuck mechanism is disposed on the rotating mechanism.
Alternatively, the position detection module can be a position detector and a light source, or comprises at least two camera groups.
Optionally, the optical curing adhesive further comprises a dispensing module, wherein the dispensing module comprises a dispensing regulating mechanism, a dispensing group and a curing group, and the adhesive used by the dispensing group is a light curing adhesive.
Optionally, the rotating mechanism and the displacement adjusting mechanism are arranged on the clamping mechanism,
optionally, the polarization measurement device further comprises a polarization measurement module, wherein the polarization measurement module comprises a polarization measurement head, a first moving mechanism, a polarization supporting structure and a turnover mechanism.
Optionally, the dispensing module 90 and the curing module 200 are further included, the curing module 200 includes a curing lamp 201 and a light shielding plate 202, a light shielding caliber of the light shielding plate 200 is not smaller than an optical effective caliber of the first lens group 11, and a light shielding plate positioning structure is disposed at one end of the second assembly close to the first lens group 11.
The virtual display testing and assembling system provided by the preferred embodiment of the invention can quickly and effectively assemble the first lens group without introducing subjective judgment factors, does not generate stains such as fingerprints and dust on the optical lens group, and is suitable for batch assembly production of virtual display modules.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is appreciated that the following drawings depict only some embodiments of the invention and are therefore not to be considered limiting of its scope, for those skilled in the art will be able to derive additional related drawings therefrom without the benefit of the inventive faculty.
Fig. 1 is a schematic structural diagram of a virtual display test installation system according to the present invention.
FIG. 2 is a schematic view of a catadioptric optical display system of a virtual display module.
Fig. 3 is a schematic structural diagram of another virtual display test installation system provided by the present invention.
Fig. 4 is a schematic structural diagram of another virtual display test installation system provided by the present invention.
Fig. 5 is a schematic structural diagram of another virtual display test installation system provided by the present invention.
Fig. 6 is a schematic structural diagram of another virtual display test installation system provided by the present invention.
Fig. 7 is a schematic structural diagram of a dispensing module according to the present invention.
Fig. 8 is a schematic structural view of another dispensing module provided in the present invention.
Fig. 9 is a schematic diagram of the position setting of the rotating mechanism and the displacement adjusting mechanism provided by the present invention.
FIG. 10 is a flowchart of a method for a virtual display test installation system according to the present invention.
Detailed Description
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. In the description of the present invention, it should be noted that the terms "upper", "middle", and the like refer to orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a virtual display testing and assembling system according to the present invention, which includes a to-be-tested virtual display module 10, a rotating mechanism 30, a clamping mechanism 20, at least one displacement adjusting mechanism 40, a vacuum chuck mechanism 50, a to-be-tested module fixing mechanism 60, a camera module 80, a position detection module 500, and a display control module (not shown in the figure), where the vacuum chuck mechanism 50 includes a chuck 51, a chuck connecting structure 52, a vacuum suction pipe 53, and a vacuum pump 54; the virtual display module to be tested 10 comprises a first lens group 11 and a second lens group, and the second lens group comprises a second lens group 121, an image display device 122, an image display control module and an assembly structural member (not shown in the figure); the module fixing mechanism 60 to be tested is used for fixedly mounting the second component of the virtual display module to be tested, the rotating mechanism 30 is arranged on the clamping mechanism 20, and the displacement adjusting mechanism 40 is arranged on the module fixing mechanism 60 to be tested. The virtual display module to be tested, the rotating mechanism 30, the displacement adjusting mechanism 40, the vacuum chuck mechanism 50, the camera module 80 and the position detection module 500 are respectively in communication connection with the display control module.
The imaging distance between the interference virtual image and the main virtual image projected by the display module shown in fig. 2 is relatively large, the image displayed on the image display device 122 is subjected to image shooting by the image shooting module 80 through the interference virtual image and the main virtual image projected by the second lens group 121 and the first lens group 11, the light energy corresponding to the interference virtual image and the main virtual image can be obtained after image processing, and the ratio of the light energy corresponding to the interference virtual image to the light energy corresponding to the main virtual image is the interference degree.
The suction cup mechanism 50 is used for sucking and placing the first lens group 11, and the suction cup 51 is vacuumized through the vacuum suction tube 53 to realize the suction of the first lens group 11. The contact part between the first lens group 11 and the suction cup 51 is a narrow annular band, and contacts with the edge of the first lens group 11 when holding the second lens group 121, so as to avoid damaging the effective optical surface of the middle part of the first lens group 11 as much as possible. The suction cup 51 can be a single suction cup as shown in fig. 1, the contact surface (shown as B) of the suction cup holding the first lens group 11 is annular, the outer diameter D1 of the annular contact surface is smaller than the maximum optical effective diameter Deff of the first lens group 11 and larger than D/2, the portion of the suction cup 51 connected with the suction cup connecting structure 52 is transparent and permeable to visible light, and the suction cup connecting structure 52 connected with the suction cup 51 is hollow as shown in C. The suction cup 51 may further be provided with an annular positioning structure 521, which coincides with the central axis of the annular contact surface B, as shown in fig. 6, an inner diameter Din of the annular positioning structure 521 is larger than the maximum diameter D of the first lens group 11, and an outer diameter Dout of the annular positioning structure 521 is smaller than the minimum inner diameter D of the assembling structure of the first lens group 11 on the second assembly. The annular positioning structure 521 enables the suction cup 51 to effectively ensure that the central axis of the first lens group 11 coincides with the central axis of the annular positioning structure 521 when the first lens group 11 is sucked by the suction cup.
In another mode, the suction cup 51 may further include a plurality of small suction cups, as shown in fig. 3, the suction cup 51 includes three small suction cups, a first small suction cup 511, a second small suction cup 512, and a third small suction cup 513, the three small suction cups are fixed on the suction cup connection structure 52, the suction cup connection structure 52 is fixedly installed on the clamping mechanism 20, a portion of the clamping mechanism 20 corresponding to the suction cup 51 has a hollow structure, as shown in a in fig. 3(a), the portion of the clamping mechanism 20 corresponding to the suction cup 51 is hollow out from the suction cup connection structure 52, and a middle portion of the suction cup connection structure 52 is hollow out, as shown in b in fig. 3, the three small suction cups are uniformly distributed in a ring shape, portions of the three small suction cups contacting the first lens group 11 are distributed in a ring shape, and an outer diameter D1 of the ring shape is smaller than a maximum optical effective aperture. On the outer side of the three small suction cups of the suction cup connection structure 52, there may also be provided an annular positioning structure 521, the central axis of which coincides with the central axis of the annular distribution. The inner diameter Din of the annular positioning structure 521 is greater than the maximum diameter D of the first lens group 11, the outer diameter Dout of the annular positioning structure 521 is less than the minimum inner diameter of the assembly structure of the first lens group 11 on the second assembly (Dmin in fig. 3 (a)), and the central axis of the annular positioning structure 521 coincides with the central axis of the annular distribution of the three small suckers, so that the central axis of the first lens group 11 and the central axis of the annular positioning structure 521 can be effectively ensured to coincide when the suckers 51 suck the first lens group 11, and the sucking is stable. Obviously, the suction cups 51 may also comprise a number of suction cups larger than 3, which are evenly distributed annularly on the suction cup attachment structure 52.
For convenience of description, a coordinate system xyz is provided, the displacement adjusting mechanism 40 may be a one-dimensional or multi-dimensional displacement mechanism, and the virtual display measurement system shown in fig. 1 includes a displacement adjusting mechanism, which is a three-dimensional displacement mechanism having displacement adjusting functions in the X direction, the Y direction and the Z direction, and is disposed on the module-to-be-measured fixing mechanism 60 for adjusting the displacement adjustment of the module-to-be-measured fixing mechanism 60 and the second component of the virtual display module to be measured 10 disposed thereon in three directions X, Y, Z. In one mode, as shown in fig. 3, the three-dimensional displacement mechanism can also be arranged on the clamping mechanism 20, and displacement adjustment of the suction cup 51 arranged on the clamping mechanism 20 in X, Y, Z three directions is achieved through adjustment of the clamping mechanism. In another mode, the displacement adjusting mechanism 40 and the rotating mechanism 30 are both disposed on the clamping mechanism 20, the rotating mechanism 30 shown in fig. 5 is disposed on one side of the clamping mechanism 20 away from the module fixing mechanism 60 to be tested, and the displacement adjusting mechanism 40 is disposed on the rotating mechanism 30, or, as shown in fig. 9, the displacement adjusting mechanism 40 shown in (a) of fig. 9 is disposed on one side of the clamping mechanism 20 close to the module fixing mechanism 60 to be tested, one end of the rotating mechanism 30 is disposed on the adjusting mechanism 40, and the other end is connected to the suction cup connecting structure 52, or, the rotating mechanism 30 shown in (b) of fig. 9 is disposed on one side of the clamping mechanism 20 close to the module fixing mechanism 60 to be tested, and the displacement adjusting mechanism 40 is disposed on the rotating mechanism 30.
In another virtual display measurement and installation system shown in fig. 4, two displacement adjustment mechanisms are provided, one of which is a two-dimensional displacement mechanism 401 having displacement adjustment functions in the X direction and the Y direction and disposed on the module fixing mechanism 60 to be measured, and the other is a one-dimensional or multi-dimensional displacement mechanism 402 having a Z-direction displacement adjustment function and disposed on the clamping mechanism 20 for adjusting the displacement of the clamping mechanism 20 in the Z direction. In another mode, as shown in fig. 4, a two-dimensional displacement mechanism 401 is provided on the gripping mechanism 20, and a one-dimensional displacement mechanism 402 is provided on the module-under-test fixing mechanism 60.
The rotating mechanism 30 is used to rotate the components provided thereon about the rotation center axis O1G1 of the rotating mechanism 30. The rotating mechanism 30 can be disposed on other components above the virtual display module 10 to be tested, for example, in the virtual display testing and assembling system shown in fig. 1, one side of the rotating mechanism 30 is fixedly disposed on the clamping mechanism 20, and the other side is fixedly connected to the suction cup connecting structure 52, so as to drive the suction cup connecting structure 52 and the suction cup 51 to rotate around the rotation center axis O1G1 of the rotating mechanism 30, and the rotation center axis O1G1 coincides with the center axis of the second lens group 121. The rotating mechanism 30 is a hollow structure, and the part of the clamping mechanism 20 corresponding to the hollow structure of the rotating mechanism 30 is hollow.
In another mode, as shown in fig. 6, the displacement adjusting mechanism 40 includes a one-dimensional displacement mechanism 402 and a two-dimensional displacement mechanism 401, the rotating mechanism 30 is disposed in the two-dimensional displacement mechanism 401, the two-dimensional displacement mechanism 401 is disposed on the holding mechanism 20, the vacuum chuck mechanism 50 is disposed on the rotating mechanism 30, the two-dimensional displacement mechanism 401 drives the rotating mechanism 30 and the chuck connecting structure 52 and the chuck 51 disposed on the rotating mechanism 30 to displace in the X direction and the Y direction, the rotating mechanism 30 drives the chuck connecting structure 52 and the chuck 51 to rotate around the axis O1G1, and the central axis of the annular contact surface of the chuck 51 contacting with the first lens group 11 coincides with the axis O1G 1. In still another mode, as shown in fig. 4, the rotation mechanism 30 is provided on the module-to-be-tested fixing mechanism 60, one end of which is connected to the module-to-be-tested fixing mechanism 60, the other end of which is connected to the two-dimensional displacement mechanism 401, and the one-dimensional displacement mechanism 402 is provided on the gripping mechanism 20.
When the rotary mechanism 30 is arranged on the gripper mechanism 20, its axis of rotation is designed at the central axis of the contact surface on the suction cup 51 in a circular distribution. The rotating mechanism 30 shown in fig. 3 is provided on the gripping mechanism 20, and the suction cup connecting mechanism 52 is provided on the rotating mechanism 30, in which case the rotating axis of the rotating mechanism 30 is set to coincide with the central axis of the circular distribution of the contact surface on the suction cup 51. The rotating mechanism 30 shown in fig. 5 is provided on the holding mechanism 20, and the displacement adjusting mechanism 40 is provided on the rotating mechanism 30, and in this case, the rotating mechanism 30 is of an offset design with a rotating shaft which is designed as a central axis annularly distributed with the contact surface on the suction cup 51.
The camera module 80 is used for shooting the projection image of the virtual display module to be measured, and the camera module 80 can be arranged in any position of the hollow structure from the sucker connecting structure 52 to the clamping mechanism 20. As shown in fig. 1, the image pickup module 80 is fixed to the clamping mechanism 20, and picks up a projection image of the virtual display module 10 to be measured through the hollow structure between the clamping mechanism 20 and the suction cup connection structure 52 and the transparent portion of the suction cup 51. The camera module 80 may also be fixedly disposed on the suction cup attachment structure 52, as shown in fig. 3. The module 80 of making a video recording sets up on sucking disc connection structure 52, but the module 80 of making a video recording passes behind the through-hole of sucking disc connection structure 52 lateral wall through the cable on it with the display control module through communication connection, as shown in fig. 4, the display control module 80 of making a video recording carries out the image shooting and handles the display interface of result after calculating on the display control module to the image of shooing and present.
The position detecting module 500 includes a position detector 510 and a light source, the position detector 510 is disposed on the clamping mechanism, and the light source may be an infrared LED or an infrared laser light source, and the like, which is not limited herein. The light source may be disposed on the module fixing mechanism 60 to be tested, as shown in P1, or disposed on the outer sidewall of the housing of the second assembly, as shown in P2. In another mode, the position detector 510 may be disposed on the module-under-test fixing mechanism 60 or on the outer sidewall of the housing of the second assembly, as shown in fig. 3, and the corresponding light-emitting source may be disposed on the holding mechanism 20, as shown at P3 in fig. 3. The position detecting module is used for detecting the relative position relationship between the clamping mechanism 20 and the module fixing mechanism 60 or the second component to be measured, obtaining the relative position relationship between the central axis O1G1 of the first lens group 11 and the optical axis of the 121 in the second component, and providing data for the displacement adjustment of the displacement adjusting mechanism 40. And a plurality of groups of position detection modules can be further arranged, so that the position detection precision is further improved. In still another mode, as shown in fig. 6, the position detection module 500 includes at least two image capturing groups, the image capturing groups 501 and 502 are disposed on the side wall of the holding mechanism 20 along the OZ direction, the two image capturing groups are spaced by a distance, after the image capturing, the position between the second lens group and the first lens group can be obtained based on the existing binocular computer vision method, and the relative positional relationship between the central axis O1G1 of the first lens group 11 and the optical axis of 121 in the second lens group can be obtained by combining the known structural parameters of the second lens group.
As shown in fig. 5, the virtual display test system may further include a polarization measurement module 300 communicatively coupled to the display control module. The polarization measurement module 300 includes a polarization measurement head 310, a first moving mechanism 320, a polarization support structure 330 and a turning mechanism (not shown in the figure), the polarization measurement head 310 includes a linear polarization element 301, a first rotating component 302, a brightness measurement mechanism 303, a second moving mechanism 305 and a second rotating component 304, the second moving mechanism 305 is disposed on the polarization support structure 330, and is connected to the brightness measurement mechanism 303, and can drive the brightness measurement mechanism 303 to move along the OY direction. The linear polarizer 301 transmits polarized light having a polarization direction identical to the transmission axis direction thereof, and is provided on the rotating member 302. The first rotating component 302 and the second rotating component 304 are both an electric control rotating adjusting component and can be in communication connection with the display control module, the first rotating component 302 drives the linear polarization element 301 to rotate around a rotating shaft of the rotating component 302, and the brightness measuring mechanism 303 is used for measuring the brightness of the linear polarization element 301. At this time, the displacement adjusting mechanism 40 is provided on the rotating mechanism 30, and one of them (the displacement adjusting mechanism 40 or the rotating mechanism 30) is provided on the gripping mechanism 20. The flipping mechanism is disposed on the second rotating assembly 304 and has a function of flipping 180 degrees around the OX axis direction.
Before the virtual display module to be tested is tested, the polarization measuring head 310 on the polarization measuring module 300 deviates from the virtual display module to be tested at a position that does not affect the holding of the first lens group 11 by the suction cup 51. When the polarization measurement is performed, the first lens group 11 is firstly sucked by the suction cup 51 through the displacement adjusting mechanism, and is adjusted in the OZ direction through the displacement adjusting mechanism again, so that a certain distance is formed between the first lens group 11 and the second lens group, and then the polarization measuring head 310 is moved to a spatial position above the second lens group and between the suction cup 51 through the first moving mechanism 320, so that an image beam projected by the virtual display module to be measured can pass through the linear polarization element 301 and can be received by the brightness measuring mechanism 303. The first rotating component 302 is controlled to rotate, so as to drive the polarization element 301 to rotate, and the brightness measuring mechanism 303 continuously measures the brightness of the image light beams emitted from the second lens group 121 during the rotation of the polarization element 301, wherein the transmission axis direction of the polarization element 301 with the maximum brightness is detected as the long axis direction of the elliptical polarization state of the image light beams, and the transmission axis direction of the polarization element 301 with the minimum brightness is detected as the short axis direction of the elliptical polarization state of the image light beams.
The linear polarizer 301 is rotated to the position with the maximum brightness, and the second moving mechanism 305 drives the brightness measuring mechanism 303 to move along the OY direction by a distance L1, where the distance L1 enables both the polarization measuring head and the flipping mechanism to be placed in the space between the second assembly and the first lens group 11. The displacement adjusting mechanism 40 is controlled so that the first lens group 11 held by the suction cup 51 is placed on the inverting mechanism, which holds the edge of the first lens group and rotates 180 degrees around the OX direction, while the transflective polarization element 112 in the first lens group 11 is in the direction close to the second assembly and away from the 1/4 phase delay element. The second moving mechanism 305 is controlled to drive the luminance measuring mechanism 303 to move L1 along the OY direction, rotate the second rotating assembly 304 and measure the luminance of the image beam emitted from the first lens group 11, and when the measured luminance is the smallest, it can be determined that the polarization direction of the linearly polarized light beam transmitted from the first lens group 11 at this time is perpendicular to the optical axis direction of the linear polarization element 301, that is, the optical axis of the polarization transflective element 112 in the first lens group 11 is perpendicular to the long axis direction of the elliptical polarization state of the image beam emitted from the second lens group 121. The second moving mechanism 305 moves the brightness measuring mechanism 303 along the OY direction by a distance of L1, the tilting mechanism tilts the first lens group 11 clamped thereon by 180 degrees and then removes the clamping of the first lens group 11, the displacement adjusting mechanism 40 is controlled to make the suction cup 51 suck the first lens group 11, at this time, the fast axis or the slow axis of the 1/4 phase delay element in the first lens group 11 forms an angle of 45 degrees with the main axis of the elliptical polarization state of the image beam emitted from the second lens group 121, and the first moving mechanism 320 is controlled to make the polarization measuring module 300 deflect out of the spatial position between the first component and the first lens group 11.
As can be seen from the imaging principle of the optical display module shown in fig. 2, when the fast axis of the 1/4 phase delay element in the first lens group 11 forms an angle of 45 degrees with the principal axis of the elliptical polarization state of the image beam emitted from the second lens group 121, the minimum interference degree can be theoretically obtained, and in consideration of the images of factors such as the actual processing technology, the interference degree of the interference virtual image emitted from the first lens group 11 with respect to the main virtual image can be within a small angle range deviating from the angle of 45 degrees, so that the first lens group 11 only needs to rotate within a small angle range to perform the interference degree calculation and judgment, and can more quickly obtain the position of the first lens group 11 with the minimum interference degree, without rotating within a large angle range, thereby reducing the frequency of controlling the rotation mechanism 30 during the interference degree test, and improving the efficiency of determining the position of the first lens group 11 with the minimum interference degree.
In one mode, the second assembly further includes a first lens group fixing cover 125, as shown in fig. 5, the first lens group fixing cover 125 is used for fixing the first lens group 11 on the mounting structure of the second assembly, an external thread structure is disposed on an outer side wall of the first lens group fixing cover 125, an internal thread structure matched with the inner side wall of the second assembly corresponding to the first lens group fixing cover 125 is disposed on the inner side wall of the second assembly, and the first lens group 11 is fastened on the second assembly by the first lens group fixing cover 125 through a thread assembly mode.
In another mode, the virtual display measuring and installing system further includes a dispensing module, the dispensing module may be an automatic or manual dispensing machine, the glue used may be a self-curing glue, such as an instant glue, or a photo-curing glue, such as an ultraviolet curing glue, and at this time, ultraviolet light needs to be matched. As shown in fig. 4, the dispensing module is a dispensing module, and includes a dispensing fixing mechanism 91 and a dispensing group 92, the dispensing fixing mechanism 91 is fixedly disposed on the fixing mechanism 60, the dispensing group 92 is disposed on the dispensing fixing mechanism 91, and the glue used for dispensing is self-curing glue. As shown in fig. 7, the dispensing group 92 includes a dispensing rotary structure 921, three dispensing heads 922, a rotary fixing member 923, a motor assembly (not shown), a dispensing inlet assembly (not shown), and other connecting structural members, one end of the dispensing head 922 is rotatably fixed to the rotary fixing member 923, and the cylindrical slot hole (shown by SC in the figure) on the dispensing rotary structure 921 matches with the cylinder on the dispensing head 922, the cylindrical slot 9211 on the dispensing rotary structure 921 is tightly connected to the motor assembly, the rotary fixing member 923 is tightly connected to the dispensing fixing mechanism 91 through a screw nut, fig. 7 (C) is a schematic position diagram of the dispensing head in a state where the dispensing group 92 is located, at this time, the centers of the three dispensing heads fall on a circular line (shown by a dotted line C1 in fig. 7) with the central axis of the cylindrical center of the cylindrical slot 9211 as a central axis, and the diameter of the circular line is greater than the maximum caliber D of the first, is smaller than the minimum inner diameter Dmin of the assembly structure of first lens group 11 on the second assembly. The dispensing fixing mechanism 91 is provided with a three-dimensional displacement adjusting structure for adjusting the position of the dispensing group 92 fixed thereon, so that the central axis of the cylinder slot 9211 of the dispensing group 92 coincides with the central axis of the first lens group 11. When the motor assembly is controlled to rotate in one direction by a preset angle, the dispensing rotary structure 921 drives the dispensing head 922 to rotate around the rotation central shaft (shown as O9 in (C) of fig. 7) through the cylinder on the dispensing head 922, and then the diameter of the circular line C1 formed by the three dispensing heads is increased, as shown in (D) of fig. 7, that is, the diameter of the circular line C1 formed by the three dispensing heads can be changed through the dispensing rotary structure 921, so that the dispensing module can adapt to a virtual display module to be tested of a second lens group with other calibers D, and the adaptability and the practicability of the virtual display testing system are improved. Before the first lens group 11 is sucked by the sucker, the three-dimensional displacement adjusting structure is controlled to enable the dispensing group 92 to deviate from the virtual display module to be tested, so that the sucker can suck the first lens group 11, after the rotating position of the first lens group 11 meeting the use requirement is determined, the sucker is separated from the first lens group, the three-dimensional displacement adjusting structure is controlled to enable the dispensing group 92 to be arranged above the virtual display module to be tested, and the central axis of a circular line C1 formed by a dispensing head on the dispensing group 92 is coincided with the central axis of the first lens group 11. In another mode, in order to reduce the operation complexity caused by the movement of the dispensing group 92 and the micro-movement of the first lens group 11 caused by the acting force of the glue during the dispensing process, the dispensing fixing mechanism 90 may be disposed on the module fixing mechanism 60 to be tested, the rotary structural member of the dispensing group 92 is disposed at the side, the aperture of the central hollow of the dispensing group 92 (indicated by D9 in fig. 8) is larger than the maximum outer aperture Dout of the suction cup 50, the side wall of the dispensing rotary structure 921 is provided with a worm wheel structure, and the worm wheel structure is matched with a worm wheel disposed on the rotary fixing member 923, the worm wheel is tightly matched with the motor assembly, when the motor assembly drives the worm wheel to rotate, the worm wheel is driven to rotate around the central axis of the circular line C1, so as to achieve the purpose of controlling the diameter change of the circular line C1 formed by. When the measurement is performed, the three-dimensional displacement adjusting mechanism on the rotary fixing member 923 is controlled to make the central axis of the circular line C1 coincide with the central axis of the first lens group 11, the diameter of the circular line C1 formed by the plurality of dispensing heads is larger than the inner diameter Dmin of the first lens group mounting structure on the second assembly by the motor assembly, the suction cup 51 penetrates through the center of the dispensing group 92 to hollow out and hold the first lens group 11, after the rotation position of the first lens group 11 meeting the usage requirement is determined, the diameter of the circular line C1 formed by the plurality of dispensing heads is larger than the maximum aperture D of the first lens group 11 and smaller than the minimum inner diameter Dmin of the assembly structure of the first lens group 11 on the second assembly through the motor assembly, after the dispensing and fixing operation is completed, the suction cup 51 is separated from the first lens group 11, and the diameter of the circular line C1 formed by the plurality of dispensing heads is larger than the inner diameter Dmin of the first lens group mounting structure on the second assembly through the motor assembly.
In another embodiment, the dispensing module further includes a curing unit, and the glue used for dispensing is a photo-curing glue. The curing group comprises an ultraviolet curing lamp source, is arranged on the dispensing group 92 and is used for irradiating the light curing glue on the virtual display module to be tested so as to rapidly cure the light curing glue.
As shown in fig. 10, the virtual display test method provided by the present invention is applied to the virtual display test system, and includes the following specific steps:
s100: the image display device in the second assembly displays the preset image, and the virtual display module to be tested is arranged on the module fixing mechanism 60 to be tested.
After the assembly of the image display device 122, the image display control module, and the second lens group 121 in the second assembly is completed, the second assembly is fixedly disposed on the fixing mechanism to be tested 60, and the first lens group 11 is movably disposed on the second assembly. The display control module controls the image display control module to display preset image information on the image display device 122. The first lens group 11 is placed on the mounting structure of the first lens group on the second assembly without any fixing operation of the first lens group.
S200: the position detecting module 500 detects and obtains the relative position relationship between the central axis of the circular distribution of the contact surface on the suction cup 51 and the central axis of the second lens group 121 in the second assembly, the display and control module calculates the adjustment parameter of the displacement adjusting mechanism according to the relative position relationship, and controls the displacement adjusting mechanism to move and adjust, so that the central axis of the circular distribution of the contact surface on the suction cup 51 is consistent with the central axis of the second lens group 121 in the second assembly, and controls the displacement adjusting mechanism to move in the OZ direction, so that the suction cup 51 contacts with the first lens group 11.
After the central axis of the annular contact surface on the suction cup 51 and the central axis of the second lens group 121 in the second assembly are adjusted and controlled to be consistent, the display and control module can further obtain the distance in the OZ direction between the annular contact surface B on the suction cup 51 and the optical surface of the first lens group 11 on the side far away from the second lens group 121 according to the detection of the position detection module 500, so that the displacement adjusting mechanism 40 can be controlled to adjust in the OZ direction, and the two are in close contact.
S300: vacuum chuck mechanism 50 holds first lens group 11, and displacement adjusting mechanism moves in the OZ direction so that the distance between the mounting planes of first lens group 11 on first lens group 11 and second lens group 11 is not less than 0.2 mm.
When the suction cup 51 contacts with the first lens group, the display control module controls the vacuum suction cup mechanism 50, the vacuum pump 54 starts the vacuum pumping mode to suck the first lens group 11 on the suction cup 51, and the central axis of the first lens group 11 and the central axis of the annular distribution of the contact surface on the suction cup 51 can be ensured to coincide. Then, the positive adjustment of the displacement adjustment mechanism along the OZ axis is controlled, so that the distance between one side of the first lens group 11 close to the second lens group 121 and the plane of the mounting structure of the first lens group 11 on the second assembly is not less than 0.2mm, and the distance is recorded as a rotation non-contact distance, which makes the first lens group 11 and the plane of the mounting structure thereof have no friction when the first lens group 11 and the second assembly perform relative rotation movement, thereby avoiding the first lens group 11 from being scratched.
S400: by the rotation mechanism 30, the first lens group 11 and the second lens group have relative rotation movement, and the camera module 80 obtains a main virtual image and an interference virtual image of a preset virtual image emitted from one side of the first lens group 11.
S500: and judging whether the interference degree of the preset virtual image meets the use requirement, if so, continuing to step S600, otherwise, returning to the step S400.
The main control module controls the rotating mechanism 30 to rotate a first angle value around the axial direction of the rotating center, the direction can be clockwise or anticlockwise around the rotating center shaft, the shooting module 80 shoots a main virtual image and an interference virtual image under the rotating angle, the main virtual image and the interference virtual image are processed and calculated to obtain a first interference degree, the first interference degree is compared with a preset image qualified interference degree, and if the first interference degree is lower than the preset image qualified interference degree, the use requirement can be judged and met. If the interference degree is higher than the preset qualified interference degree of the image, the use requirement is judged not to be met, at the moment, the display control module controls the rotating mechanism 30 to rotate in the same direction again for a second angle value, a corresponding second interference degree is obtained, the second interference degree is judged, if the use requirement is not met, the second interference degree and the first interference degree are compared, when the second interference degree is smaller than the first interference degree, the rotating mechanism 30 is controlled to continue rotating in the same direction for a third angle value, and the third angle value can be the same as the first angle value or different from the first angle value. When the second interference degree is greater than the first interference degree, then control rotary mechanism 30 to continue to rotate the fourth angle value to opposite direction, the fourth angle value is less than first angle value, and the rotation back control is shot module 80 and is shot current main virtual image and interference virtual image, calculates the interference degree and carries out the judgement of whether meeting operation requirement, until obtaining the rotation angle value that meets operation requirement.
S600: the plane of the first mirror group mounting structure in the assembling structure of the first mirror group 11 and the second module is brought into contact by the displacement adjusting mechanism 40.
The display control module controls the displacement adjusting mechanism 40 to move the non-contact distance of rotation in step S300 along the negative direction of the OZ, and at this time, the first lens group 11 is in contact with the plane of the first lens group mounting structure in the assembly structural member of the second assembly.
S700: the first lens group 11 is fixed on the assembly structure of the second assembly.
The fixing of the first lens group 11 on the second assembly can be performed by fastening the first lens group fixing cover 125, the inner side wall of the second assembly is provided with an internal thread structure, and the first lens group is fixed by the first lens group fixing cover provided with an external thread structure in a thread assembling manner. It is fixed also to glue the mode through the point, adjust through the three-dimensional displacement adjustment mechanism on the regulation and control mechanism 91 that glues for a point is glued group 92 and is located the top of the virtual display module assembly that awaits measuring, and the center pin of the circular line C1 that the dispensing head that glues on the group 92 was glued coincides with the center pin of first mirror group 11, makes the diameter of the circular line C1 that a plurality of dispensing heads constitute be greater than the internal diameter Dmin of first mirror group mounting structure on the second subassembly through motor element, then fixes to glue again.
The invention also provides another virtual display testing and installing method, which comprises the following specific implementation steps:
s01: and enabling an image display device in the second assembly to display a preset image, wherein the virtual display module to be tested is arranged on the module fixing mechanism to be tested.
S02: the first lens group is sucked by the control sucker, the displacement adjusting mechanism is controlled to enable the second component and the first lens group to be spaced at a certain distance in the OZ direction, and the moving mechanism on the polarization measuring module is controlled to enable the polarization measuring head to move between the second component and the first lens group.
The display control module firstly controls the suction cup 51 to suck the first lens group 11 placed on the second assembly, and the displacement adjusting mechanism 40 adjusts and controls the first lens group 11 in the OZ direction, so that a certain distance is formed between the second assembly and the first lens group 11, and a space capable of placing the polarization measuring head 310 is formed between the second assembly and the first lens group 11. Then, the moving mechanism on the polarization measurement module is controlled to move the polarization measurement head from a position far away from the second component to a position between the second component and the first lens group, and the image light beam projected by the virtual display module to be measured can be received by the luminance meter 303 through the linear polarization element 301.
S03: the rotation position of the first lens group 11 relative to the second assembly is determined by the polarization measurement module, so that the first lens group is held by the sucker again.
The first rotating component 302 in the polarization measurement module rotates to drive the linear polarization element 301 to rotate, the brightness measurement mechanism 303 continuously measures the brightness of the light beam emitted from the linear polarization element 301, obtains the position of the linear polarization element 301 with the maximum brightness, then shifts the brightness measurement mechanism 303, controls the displacement adjustment mechanism 40 to place the first lens group 11 held by the sucker 51 on the tilting mechanism arranged on the second rotating component 304, after the tilting mechanism drives the first lens group 11 to rotate 180 degrees around the OX direction, controls the second moving mechanism 305 to drive the brightness measurement mechanism 303 to shift in the opposite direction, controls the second rotating component 304 to drive the first lens group 11 to rotate, the brightness measurement mechanism 303 continuously measures the brightness of the light beam emitted from the first lens group 11, determines the rotating position of the first lens group 11 at the minimum brightness, controls the second moving mechanism 305 to drive the brightness measurement mechanism 303 to shift again, the tilting mechanism drives the first lens group 11 to rotate 180 degrees around the OX direction again, controls the displacement adjusting mechanism 40 to make the sucker 51 suck the first lens group 11 again, and shifts the polarization measurement module out of the spatial position between the first lens group 11 and the first assembly through the first moving mechanism 320. At this time, the fast axis or the slow axis of the 1/4 phase delay element of the first lens group 11 held by the suction cup 51 forms an angle of 45 degrees with the principal axis of the elliptical polarization state of the image beam emitted from the second lens group 121. When the suction cup 51 is provided with the annular positioning structure 521, and the suction cup 51 holds the first lens group 11, the central axis of the annular distribution of the contact surface on the suction cup 51 can be consistent with the central axis of the first lens group 11. If the suction cup 51 is not provided with the annular positioning structure 521, before the displacement adjustment mechanism 40 is controlled to make the suction cup 51 suck the first lens group 11 again, the relative position relationship between the central axis of the annular distribution of the contact surface on the suction cup 51 and the central axis of the first lens group 11 on the turnover mechanism can be detected and obtained by the position detection module, and the position of the suction cup 51 is controlled by the displacement adjustment mechanism to adjust the position of the suction cup 51, so that the central axes of the two are consistent.
S04: the position detection module detects and acquires the relative position relation between the central axis of the contact surface on the sucker in annular distribution and the central axis of the second lens group, the display control module calculates the adjustment parameters of the displacement adjusting mechanism according to the relative position relation, controls the displacement adjusting mechanism to move and adjust, enables the central axis of the contact surface on the sucker in annular distribution to be consistent with the central axis of the second lens group, and controls the displacement adjusting mechanism to move in the OZ direction, and enables the sucker to be in contact with the first lens group.
S05: the first lens group is sucked by the sucker, and the displacement adjusting mechanism moves in the OZ direction, so that the distance between the mounting planes of the first lens group on the first lens group and the first lens group on the second lens group is not less than 0.2 mm.
S06: the first mirror group and the second mirror group are in relative rotary motion through the rotating mechanism, and the camera module acquires a main virtual image and an interference virtual image of a preset virtual image emitted from the first mirror group.
S07: and judging whether the interference degree of the preset virtual image meets the use requirement, if so, continuing to step S08, otherwise, returning to the step S06.
S08: and the plane of the first lens group mounting structure in the assembling structure of the first lens group and the second assembly is contacted through the displacement adjusting mechanism.
S09: the first lens group is fixed on the assembly structure of the second component.
The virtual display testing and assembling system provided by the preferred embodiment of the invention can rapidly and correctly assemble the first lens group of the virtual display module to be tested without human participation through the display control module to control the rotating mechanism, the clamping mechanism, the displacement adjusting mechanism, the vacuum chuck mechanism, the camera module and the position detection module, and can not generate stains such as fingerprints and dust on the optical lens group. The virtual display testing and assembling system provided by the invention is suitable for batch assembly production of the virtual display modules.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A virtual display testing and assembling system is characterized by comprising a virtual display module to be tested, a rotating mechanism, a clamping mechanism, a displacement adjusting mechanism, a vacuum chuck mechanism, a module to be tested fixing mechanism, a camera module, a position detection module and a display control module, wherein the vacuum chuck mechanism comprises a chuck, a chuck connecting structure, a vacuum suction pipe and a vacuum pump, and the chuck connecting structure is of a hollow structure; the to-be-tested virtual display module comprises a first lens group and a second assembly, the second assembly comprises a second lens group, an image display device, an image display control module and an assembly structural member, the to-be-tested module fixing mechanism is used for fixedly mounting the second assembly of the to-be-tested virtual display module, and the camera module is arranged in a hollow structure between the sucker connecting structure and the clamping mechanism; the virtual display module to be detected, the rotating mechanism, the displacement adjusting mechanism, the vacuum chuck mechanism, the camera module and the position detection module are respectively in communication connection with the display control module.
2. The virtual display test assembly system according to claim 1, wherein the suction cup comprises at least three small suction cups, the at least three small suction cups are annularly distributed on the suction cup connection structure, and the holding mechanism is provided with a hollow structure.
3. The system for virtual display inspection and installation according to claim 1, wherein the suction cup is a single suction cup, the portion of the suction cup contacting the first lens group is annular, and the portion of the suction cup contacting the suction cup connecting structure is transparent and transparent to visible light.
4. The system according to claim 1, wherein the rotating mechanism and the displacement adjusting mechanism are disposed on the fixing mechanism of the module under test, and the vacuum chuck mechanism is disposed on the clamping mechanism.
5. The system according to claim 1, wherein the rotating mechanism is disposed on the clamping mechanism, the vacuum chuck mechanism is disposed on the rotating mechanism, the rotating mechanism is a hollow structure, and the displacement adjusting mechanism is disposed on the fixing mechanism of the module to be tested.
6. The system according to claim 1, wherein the displacement adjusting mechanism comprises a one-dimensional displacement mechanism and a two-dimensional displacement mechanism, the rotating mechanism is disposed in the two-dimensional displacement mechanism, the one-dimensional displacement mechanism is disposed on the fixing mechanism of the module to be tested, and the vacuum chuck mechanism is disposed on the rotating mechanism.
7. The virtual display assembling system of any one of claims 1 to 6, wherein said position detecting module is a position detector and a light source, or comprises at least two image capturing groups.
8. The system according to any one of claims 1 to 6, further comprising a dispensing module, wherein the dispensing module comprises a dispensing control mechanism, a dispensing group and a curing group, and the glue used by the dispensing group is a photo-curing glue.
9. The virtual display assembly system of claim 1, wherein the rotation mechanism and the displacement adjustment mechanism are disposed on the clamping mechanism.
10. The virtual display measurement system according to claim 9, further comprising a polarization measurement module, wherein the polarization measurement module comprises a polarization measurement head and a first moving mechanism, a polarization support structure and a flipping mechanism.
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| CN202010671555.4A CN111781698A (en) | 2020-07-13 | 2020-07-13 | Virtual display measuring and installing system |
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