CN111610639A - Optical lens assembling device and assembling method of optical-mechanical module - Google Patents
Optical lens assembling device and assembling method of optical-mechanical module Download PDFInfo
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- CN111610639A CN111610639A CN201910141566.9A CN201910141566A CN111610639A CN 111610639 A CN111610639 A CN 111610639A CN 201910141566 A CN201910141566 A CN 201910141566A CN 111610639 A CN111610639 A CN 111610639A
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- 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
Abstract
The invention discloses an optical lens assembling device and an assembling method of an optical-mechanical module, which are used for mounting an optical lens at least comprising a part of a rotational symmetry plane on a structural member, and comprise a multi-dimensional adjusting mechanism and optical centering equipment for determining a rotational symmetry axis of the rotational symmetry plane, wherein the multi-dimensional adjusting mechanism is configured to be detachably connected with the optical lens and adjust the relative position of the optical lens and a mounting surface of the optical lens assembling device, and the included angle between the optical axis of the optical centering equipment and the mounting surface is 30-60 degrees. The invention ensures the consistency of the display effect of the assembled lens and the preset effect, reduces the degree of trapezoidal distortion of the image, and is not only suitable for adjusting the optical element with an axisymmetric structure, but also suitable for adjusting the optical element with a special shape (such as an arc lens).
Description
Technical Field
The invention belongs to the technical field of optics, relates to an assembly technology of optical elements, and particularly relates to an optical lens, in particular to a centering and assembly device of the optical lens with a part in an optical surface being a rotational symmetry plane, and an assembly method of an optical-mechanical module.
Background
In an optical system, compared with a conventional spherical lens, the surface curvature of an aspherical lens is designed to be different from the curvature of each point from the center to the periphery of the lens, and the application of the aspherical lens in the optical system is more and more common due to the advantages of less visual distortion and more vivid visual objects. In application, centering of the optical axis of the aspheric lens and positioning and mounting of the lens are key to ensure the imaging quality of the formed optical components, such as glasses, lenses and other optical systems. The centering of the aspheric lens is completed by means of a centering tool, for example, CN102608727 discloses a centering tool and a method for determining the reference of the aspheric mirror by using the centering tool, the centering tool comprises a mechanical rotating shaft, a master disc and a spindle sleeve, and further comprises a centering reference tool which is composed of a reticle master disc, a reticle sleeve and a cross reticle (a plane mirror whose center can be a cross). The centering tool is only suitable for an axisymmetric structure system, and cannot perform centering adjustment on arc piece lenses and structures with special shapes.
The assembly of the optical lens and the mechanical component (such as the frame) is usually performed by connecting the components through a spatial positioning tool and then adjusting the positional relationship between the lens and the frame. Taking the AR optical module shown in fig. 2 as an example, the main components of the AR optical module include an optical arc sheet 01, an optical flat sheet 02 and a display device 03, wherein the optical arc sheet 01 located in front of the human eye is used as an aspheric lens with reflection and transmission functions, the assembling clearance with the AR bracket is large, and the precision of the angle of the optical axis of the optical arc sheet 01 relative to the reference plane 04 of the AR bracket (i.e. the included angle between the optical axis of the optical arc sheet 01 and the reference plane of the AR bracket 06) affects the binocular adjustment and the image quality observed by the human eye. Because the AR support is often fixed on the support rotating table, because the inherent mechanical error when the support rotating table is processed, the optical arc piece 01 also can produce the error when processing, if only rely on support rotating table machining precision to fix a position, need the optical axis center of lens and the light path of the display center of display device 03 coaxial reach best optical display effect, but because the not enough display result that leads to the installation and debugging out of support rotating table positioning precision has the demonstration result inconsistent with the projection image and image keystone distortion. And the processing precision and the artificial installation precision in the assembly are also the problems, the display effect of the final product after the optical arc sheet 01 and the display device 03 are assembled is not ideal, and the consistency with the optical design effect is difficult to ensure. The same problem exists with the adjustment of optical lenses in other optical modules.
Disclosure of Invention
In order to solve the above technical problems, an object of the present invention is to provide an optical lens fitting apparatus.
The above object of the present invention is achieved by the following technical solutions:
an optical lens fitting apparatus for mounting an optical lens on a structure, at least a portion of at least one optical surface of the optical lens being a portion of a rotational symmetry plane, wherein an outer diameter of the optical lens is rotationally symmetric or non-rotationally symmetric, the apparatus comprising a multi-dimensional adjustment mechanism and an optical centering device for determining a rotational symmetry axis of the rotational symmetry plane, wherein the optical centering device is configured to enable light emitted by the optical centering device to fall on the optical lens, the multi-dimensional adjustment mechanism is configured to detachably connect an optical lens and to adjust a relative position of the optical lens to a mounting reference of the optical lens fitting apparatus; preferably, the mounting datum comprises a mounting surface and a fixing assembly for preventing rotation of the structural member on the mounting surface; more preferably, the optical axis of the optical centering device is at an angle of between 30 and 60 degrees to the mounting surface.
In the optical lens assembling device, the multidimensional adjusting mechanism at least comprises a sliding platform and a rotating frame, wherein the sliding platform is a two-dimensional sliding platform consisting of an X-direction sliding platform and a Y-direction sliding platform in the horizontal direction or a three-dimensional sliding platform consisting of an X-direction sliding platform, a Y-direction sliding platform and a Z-direction sliding platform in the vertical direction; the rotating frame is a two-dimensional rotating frame consisting of an X-direction rotating table and a Y-direction rotating table in the horizontal direction, or a three-dimensional rotating frame consisting of an X-direction rotating table, a Y-direction rotating table and a Z-direction rotating table in the vertical direction; x, Y, Z are oriented orthogonally.
Specifically, the multidimensional adjusting mechanism is a four-dimensional adjusting mechanism, a five-dimensional adjusting mechanism or a six-dimensional adjusting mechanism; the four-dimensional adjusting mechanism comprises the two-dimensional sliding platform and a two-dimensional rotating frame; the five-dimensional adjusting mechanism comprises the two-dimensional sliding platform and a three-dimensional rotating frame, or comprises the three-dimensional sliding platform and the two-dimensional rotating frame; the six-dimensional adjusting mechanism comprises the three-dimensional sliding platform and a three-dimensional rotating frame.
The rotating shaft of the X-direction rotating platform, the rotating shaft of the Y-direction rotating platform and the rotating shaft of the Z-direction rotating platform of the rotating frame are less than or equal to 20 mm in distance, preferably, the rotating shafts of the X, Y-direction rotating platforms are approximately in a same point, more preferably, the rotating shaft of the Z-direction rotating platform is approximately in a same point through X, Y rotating shafts and is overlapped with the optical axis of the centering instrument.
Specifically, the optical centering equipment is a centering instrument, the device is provided with a support rotating table (4) which is used for fixing a structural part and can rotate along a central shaft, and preferably, the rotating shaft of the support rotating table is superposed with the optical axis position of the centering instrument; preferably, the support rotation table (4) is horizontally rotatable. The mounting reference is detachably arranged on the support rotating table (4). More specifically, the support rotating table (4) is cylindrical, and a fixing member (41) for fixing the structural member extends from the upper surface of the support rotating table, and the fixing member is configured to keep the preset axial position of the structural member fixed on the fixing member to be coincident with the rotating shaft of the support rotating table. The fixing piece is provided with a positioning reference used as a mounting surface of the mounting reference, and the reference surface (04) of the structural piece is aligned with the positioning reference of the fixing piece and is fixedly mounted. The positioning reference of the fixing piece and the rotating shaft of the bracket rotating table are in a preset posture; preferably, the positioning datum comprises a positioning plane, and the positioning plane and a rotating shaft of the bracket rotating table form a preset angle; preferably, the positioning plane is parallel to a rotation axis of the gantry rotation table. Further, the fixing assembly of the positioning reference further comprises a pushing mechanism (5) for pressing the structural member to the fixing member (41) to fix the structural member.
In the optical lens fitting apparatus, the multi-dimensional adjustment mechanism is located on a support rotating table (4), and a rotating shaft of at least one rotating frame of the multi-dimensional adjustment mechanism coincides with a central shaft of the support rotating table.
Another object of the present invention is to provide a method of assembling an opto-mechanical module.
The method for assembling the optical-mechanical module provided by the invention utilizes the optical lens assembling device, and comprises the following processes: attaching the optical lens to the multi-dimensional adjustment structure, the optical lens comprising a first face and an opposite second face; adjusting the relative position of the optical lens and the structural member to enable the rotational symmetry axis of the first surface of the optical lens and the structural member to be in a preset posture; fixing the optical lens to the structural member in the preset posture.
In a specific assembly scheme, the installation reference of the optical lens assembly device comprises an installation surface and a fixing component for preventing the structural member from rotating on the installation surface, and the adjusting of the relative position of the optical lens and the structural member comprises: attaching the datum plane of the structural member to the mounting surface, and fixing the structural member by using the fixing assembly; and adjusting the relative position of the optical lens and the mounting surface so that the rotational symmetry axis of the first surface of the optical lens and the mounting surface form a preset angle.
In another specific assembly scheme, the mounting reference of the optical lens assembly apparatus includes a mounting surface and a fixing component for preventing the structural member from rotating on the mounting surface, wherein the adjusting the relative position of the optical lens and the structural member includes: attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly; emitting measuring light to the optical lens first face using the optical centering device; obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and the measurement light ray using the optical centering apparatus, the reflected light ray being formed by the measurement light ray being reflected by the first face of the optical lens; adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the measuring light ray to be smaller than a threshold value.
In another specific assembly scheme, the mounting reference of the optical lens assembly device comprises a mounting surface and a fixing component for preventing the structural member from rotating on the mounting surface, wherein the adjusting the relative position of the optical lens and the structural member comprises: attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly; emitting measuring light to the optical lens first face using the optical centering device; obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by reflection of the measurement light ray through the first face of the optical lens, using the optical centering apparatus; and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
More specifically, the method further comprises the following steps: rotating the gantry rotation stage such that the optical lens is in another pose different from a previous pose; and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens in the other posture and the normal of the reflection point to be smaller than a threshold value.
More specifically, the method further comprises the following steps: rotating the support rotating table; continuously determining the difference between the reflected light rays of the first face of the optical lens and the normal of the point of reflection during rotation; and adjusting the multi-dimensional adjusting structure until the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point is less than a threshold value during one rotation.
More specifically, the method further comprises the following steps: emitting measurement light rays towards the optical lens second face using the optical centering apparatus; obtaining information indicative of a difference between a reflected light ray of the second face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by the measurement light ray reflecting through the second face of the optical lens, using the optical centering apparatus; adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the second surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
In a more specific aspect, the fixing the optical lens to the structural member in the preset posture comprises: and fixing the optical lens to the structural member in the preset posture by using a dispensing mode. Wherein the dispensing positions are symmetrical with respect to the geometric center of the optical lens. The dispensing mode utilizes at least one of UV glue, low-shrinkage resin quick-drying glue, hot melt glue or bi-component glue.
More specifically, the utility model relates to a method for positioning and installing optical arc sheets in AR optical module components, the structural component is an AR bracket (06), and the optical lens is an optical arc sheet (01).
By adopting the scheme, the centering device can be used for carrying out multidimensional space adjustment on the optical lens, particularly the non-spherical lens, and can ensure that the error between the optical axis of the lens and the preset axis position of a structural member (a bracket assembly surface) is minimum. The consistency of the display effect and the preset effect of the optical lens assembled in the process is ensured, and the degree of trapezoidal distortion of the image is reduced, so that the adjustment and improvement of the trapezoidal distortion in the subsequent process are facilitated.
The invention can improve the following effects of the optical module component product by adjusting the front arc sheet:
a. the imaging definition of the product;
b. the consistency of the optical distortion of the product and the imaging angle of a single optical module is improved;
c. improve the distortion of the image projected by the product (whether the formed image is regular or not and whether the formed image has a trapezoid or not).
Drawings
FIG. 1 is a schematic structural diagram of an assembling apparatus for an optical lens according to the present invention;
FIG. 2 is a schematic view showing the structure of an optical module according to an embodiment;
fig. 3 is a schematic view showing an adjustment result displayed on a display screen when the arc sheet is adjusted in five dimensions by the assembling apparatus of the present invention.
FIG. 4 is a schematic structural view of a three-dimensional adjustment platform in the assembly apparatus of the present invention;
FIG. 5 is a schematic view of a two-dimensional adjustment frame of the assembly apparatus of the present invention;
FIG. 6 is a schematic view of the structure of the pushing mechanism in the assembling apparatus of the present invention;
FIG. 7 is a schematic structural view of a stand rotating table mechanism in the assembling apparatus of the present invention;
fig. 8 is a schematic structural view of a centralizer mechanism of the assembly apparatus of the present invention.
The reference numbers in the figures denote:
01-optical arc sheet, 02-optical flat sheet, 03-display device, 04-reference plane, 05-normal plane and 06-AR bracket;
1-a centering instrument;
2-three-dimensional adjusting platform, 21-X direction sliding table, 22-Y direction sliding table, 23-Z direction sliding table, 24-X adjusting differential head, 25-Y adjusting differential head, 26-Z adjusting differential head, 27-X direction guide rail, 28-Y direction guide rail and 29-Z direction guide rail;
3-a two-dimensional adjusting frame, 31-a rotating platform around the X, Y direction, 32-an adjusting knob around an X axis, 33-an adjusting knob around a Y axis, 34-a fastening spring and 35-a reference platform;
4-support rotating table, 41-fixed part, 42-rotating shaft base, 43-deep hole;
5-pushing mechanism, 51-shaft sleeve, 52-pushing rod and 53-fixed base
6-base.
Detailed Description
The invention firstly provides an optical lens assembling device for finishing the precise installation of an optical lens and a mechanical part (structural member), wherein the optical lens refers to a lens of which at least one part of at least one optical surface is a part of a rotational symmetry plane and shares a rotational symmetry axis, wherein the outer diameter can be rotationally symmetric or non-rotationally symmetric, and the effect of the non-rotationally symmetric outer diameter is more obvious. The structural member is provided with a datum surface (04) for positioning of the mounted lens.
The optical lens fitting apparatus proposed by the present invention comprises at least a multidimensional adjustment mechanism and an optical centering device for determining the axis of rotational symmetry of the plane of rotational symmetry of the lens, wherein: an optical centering device, which may be a centering apparatus (used with a rotary stage), may be an industrial camera for determining distorted rotational symmetry, may be a surface-type detection device (such as an interferometer or a hadamard wavefront sensor), may be a three-coordinate machine, a projector, or the like, is configured to enable light emitted by the optical centering device to fall on the optical lens; a multi-dimensional adjustment mechanism configured to detachably connect an optical lens and adjust a relative position of the optical lens and a mounting reference of the optical lens mounting apparatus; the mounting datum of the mounting device is used for aligning with a datum plane (04) of a structural member and comprises a mounting surface and a fixing component for preventing the structural member from rotating on the mounting surface. In a preferred embodiment, the optical axis of the optical centering device is angled between 30 and 60 degrees from said mounting surface.
In an embodiment, the optical centering device is a centering apparatus, and the apparatus is provided with a support rotating table which is rotatable along a central axis and is used for fixing the structural member, and preferably, a rotating axis of the support rotating table (for example, a central axis of a cylindrical rotating table) is coincident with an optical axis position of the centering apparatus. In another embodiment, the support rotation table has a rotation axis perpendicular to a horizontal plane, and the support rotation table is capable of horizontal rotation such that the structure can be fixed to the support rotation table and can rotate on the horizontal plane.
In one embodiment, the head end of the multi-dimensional adjustment mechanism is removably attachable to the lens for placement of the lens on the structure and enables multi-dimensional adjustment of the lens position and angle. In one embodiment, an optical centering device, such as a centralizer, is positioned on one side (e.g., the upper end) of the lens for determining the pose of the lens in a multi-dimensional adjustment of the lens. In particular, an optical centering device, such as a centering instrument, is capable of emitting light to a lens and receiving corresponding reflected light from the lens to obtain an angle between the emitted light and the reflected light or information indicative of the angle between the emitted light and the reflected light.
In one embodiment, the optical centering apparatus is a centering device, the fixing structure is a support rotating table, the mounting standard is detachably disposed on the support rotating table, the multi-dimensional adjusting mechanism is disposed on the support rotating table, a rotating shaft of the support rotating table (for example, a central shaft of the cylindrical rotating table) coincides with an optical axis position of the centering device, and a rotating shaft of a rotating frame of the multi-dimensional adjusting mechanism coincides with the central shaft position of the support rotating table.
In another embodiment, a fixture for mounting a structure is provided on the support rotation table, the fixture being configured to maintain a predetermined axial position of the structure fixed on the fixture coincident with a rotation axis of the support rotation table. The fixing piece is provided with a positioning reference of the mounting surface as the mounting reference, and the reference (04) of the structural piece is aligned with the positioning reference of the fixing piece and is fixedly mounted. The location benchmark of mounting with the rotation axis of support revolving stage is predetermineeing the gesture, preferably, the location benchmark includes the location plane, the location plane with the rotation axis of support revolving stage is predetermineeing the angle, preferably parallel. The datum plane (04) of the structural member is attached or aligned with the mounting plane of the fixture. Further, the fixing assembly of the positioning datum also comprises a pushing mechanism used for pressing the structural part to the fixing part so as to fix the structural part.
In a specific example, the multi-dimensional adjustment mechanism may vary from four to six dimensions. The multi-dimensional adjusting mechanism at least comprises a sliding platform and a rotating frame, wherein the sliding platform is a two-dimensional sliding platform consisting of an X-direction sliding platform and a Y-direction sliding platform in the horizontal direction or a three-dimensional sliding platform consisting of an X-direction sliding platform, a Y-direction sliding platform and a Z-direction sliding platform in the vertical direction; the rotating frame is a two-dimensional rotating frame consisting of an X-direction rotating table and a Y-direction rotating table in the horizontal direction, or a three-dimensional rotating frame consisting of an X-direction rotating table, a Y-direction rotating table and a Z-direction rotating table in the vertical direction; wherein the X, Y, Z directions are orthogonal. The rotating shaft of the X-direction rotating platform, the rotating shaft of the Y-direction rotating platform and the rotating shaft of the Z-direction rotating platform of the rotating frame are at a distance of less than or equal to 20 mm, preferably, the rotating shafts of the X, Y-direction rotating platforms are approximately in a same point, more preferably, the rotating shafts of the Z-direction rotating platforms are approximately in a same point through X, Y rotating shafts and are overlapped with the optical axis. When the multidimensional adjusting mechanism is a four-dimensional adjusting mechanism, the multidimensional adjusting mechanism comprises a two-dimensional sliding platform and a two-dimensional rotating frame; when the five-dimensional adjusting mechanism is adopted, the five-dimensional adjusting mechanism comprises a two-dimensional sliding platform and a three-dimensional rotating frame, or comprises a three-dimensional sliding platform and a two-dimensional rotating frame; when the six-dimensional adjusting mechanism is adopted, the six-dimensional adjusting mechanism comprises a three-dimensional sliding platform and a three-dimensional rotating frame; in a preferred embodiment, the two-dimensional or three-dimensional rotating frame of the multi-dimensional adjusting mechanism is fixed on a two-dimensional or three-dimensional sliding platform and is connected into a whole.
In another preferred embodiment, the multi-dimensional adjustment mechanism is located on the gantry rotation stage, and the rotation axis of at least one of the rotation frames of the multi-dimensional adjustment mechanism coincides with the central axis of the gantry rotation stage (e.g., the central axis of the column). In one embodiment, the axis of rotation of the X-direction rotary stage, the axis of rotation of the Y-direction rotary stage, and the axis of rotation of the Z-direction rotary stage of the carousel are less than 20 mm from each other, and the axis of rotation of the X, Y-direction rotary stage is substantially co-located, the axis of rotation of the Z-direction rotary stage being substantially co-located through the axis of rotation X, Y and coincident with the optical axis of the centralizer.
The structure of the optical lens assembling apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. Referring to fig. 1, the optical lens assembling apparatus of this embodiment is configured with a base 6, a stand rotating table 4, a three-dimensional adjusting table 2, a two-dimensional adjusting stand 3, a pressing mechanism 5, and a centering instrument 1, wherein:
in this example the base 6 is provided with a shaft (not shown) for mounting the gantry rotation table 4. The design of the base 6 in this embodiment is not limited, and any design capable of driving the support rotating table 4 to rotate is feasible.
In this example, the support rotating platform 4 is configured to drive the components carried thereon to rotate, and a deep hole 43 (see fig. 7) matching with the rotating shaft of the base 6 is provided at the central axis of the lower rotating shaft base 42, and the support rotating platform 4 is mounted on the base 6 through the deep hole 43 and the rotating shaft. In one embodiment, the support rotation table 4 is provided with an adjustment assembly to enable its rotation axis to be perpendicular to the horizontal plane. The support rotation table 4 is used for mounting a structural member, and in one embodiment, a fixing member 41 (a structural member such as the AR support 06 shown in fig. 1) for mounting the structural member is disposed on the upper surface of the support rotation table 4. In one embodiment, the mounting plane of the fixture 41 is held flat as part of the mounting datum (mounting surface of the mounting datum), and the mounting datum has a fixing assembly that prevents the structure from rotating on the mounting surface. In this case, when a portion (for example, the reference surface 04) of the structural member which fits the aforementioned mounting plane is fitted to the mounting plane which is a part of the mounting reference, and the structural member is prevented from rotating on the mounting surface, the rotation axis of the rack rotation table 4 passes through the preset position of the structural member, in other words, the rotation axis of the rack rotation table 4 coincides with the preset axis of the structural member.
In one embodiment, the optical axis of the optical centering apparatus is parallel to the rotational axis of the gantry rotation stage 4. The optical axis of the optical centering device is at an angle of between 30 and 60 degrees inclusive to the mounting plane of the fixture 41.
In one embodiment, biasing mechanism 5, which is part of a mounting assembly that prevents rotation of a structure on a mounting surface, is shown in connection with FIG. 6 and includes a hub 51, a biasing rod 52 slidably disposed within the hub, and a mounting base 53 that secures the hub. The pushing mechanism 5 is first screwed to the corresponding screw hole of the stand rotating table 4, and the pushing rod 52 is pushed to slide in the bushing 51, so as to press the positioned mounting structure (for example, the AR stand 06 shown in fig. 1) to the fixing member 41 of the stand rotating table. The pressing mechanism 5 is fixed to one side of the holder rotating table 4 and the holder 41, and in one specific embodiment, for example, the reference surface 04 (as shown in fig. 1 and 2) of the AR holder 06 is fixed to one side of the holder 41 by a pin, and the AR holder 06 is fixed and pressed by the pressing mechanism 5, thereby holding the reference surface in contact with the holder 41.
In one embodiment, the three-dimensional adjustment stage 2 is X, Y, Z three-way slides, as shown in fig. 4, and includes an X-direction slide 21 and an X-adjustment differentiating head 24 and an X-guide rail 27 provided thereon, a Y-direction slide 22 and a Y-adjustment differentiating head 25 and a Y-guide rail 28 provided thereon, and a Z-direction slide 23 and a Z-adjustment differentiating head 26 and a Z-guide rail 29 provided thereon. X, Y, Z three one-way sliding tables 21, 22 and 23 are connected and fixed into a whole through screw holes on the sliding tables, and are arranged on the other side of the fixed part 41 of the bracket rotating table 4, the upper surface and the lower surface of the fixed part are kept flat, and the three-dimensional adjusting platform 2 and the installation plane of the bracket rotating table 4 are kept horizontal. During the use, will need X, Y, Z to carry out the two-dimensional adjustment frame 3 that three-dimensional removal was adjusted to fix on Z direction slip table 23, rotate adjustment differential head 24/25/26 on the X, Y, Z three slip tables in proper order and can reach the removal precision of settlement, treat that the arc piece of assembling carries out accurate three-dimensional regulation location.
In one embodiment, the two-dimensional adjusting frame 3 is a rotating platform around X, Y direction, and as shown in fig. 5, the two-dimensional adjusting frame comprises a X, Y direction rotating platform 31, an X axis adjusting knob 32, a Y axis adjusting knob 33, a fastening spring 34 and a reference platform 35 which are connected into a whole, the two-dimensional adjusting frame 3 is integrally positioned above an arc sheet to be adjusted, the reference platform 35 is in locking connection with a positioning connection threaded hole on the upper surface of the Z direction sliding table 23 of the three-dimensional adjusting platform 2 through a screw, and the installation plane is kept horizontal, so that the three-dimensional adjusting platform 2 and the two-dimensional adjusting frame 3 are combined to form a five-dimensional adjusting mechanism. After the optical lens to be adjusted is detachably connected (e.g. glued) to the end of the rotary platform 31, the fastening spring 34 is extended or contracted to rotate the optical lens angularly around the X-axis or Y-axis by rotating the X, Y-axis adjusting knobs 32 and 33, and the optical lens can be accurately adjusted and positioned due to the fine pitch of the rotating adjusting knobs 32 and 33. In one embodiment, the optical lens is, for example, an optical arc piece 01 in an AR optical module, the rotating platform part 31 of the two-dimensional adjusting frame 3 around the direction X, Y is connected with the approximately central area of the optical arc piece 01 by a double-sided adhesive tape, and the two-dimensional adjusting frame 3 connected with the optical arc piece 01 is driven by adjusting the three-dimensional adjusting platform 2 to move X, Y, Z axis, so that the optical arc piece 01 is placed on the AR bracket 06 with the arc surface upward (as shown in fig. 1 and 2 for example).
In one embodiment, the optical centering device is capable of emitting measurement light to the optical lens, receiving corresponding reflected light reflected from the optical lens and determining to obtain information indicative of a difference (in particular a spatial position difference) of the measurement light and the reflected light. Based on the difference in the spatial position of the measurement light and the reflected light, the optical centering device can obtain the angle between the measurement light and the reflected light, or information indicative of the angle. It is clear that the angle between the measurement light and the reflected light is twice the angle between the reflected light and the normal of the reflection point of the optical mirror. Thus, the optical centering device is also able to obtain the angle between the measurement light and the reflected light, or information indicative thereof.
In a specific example, the optical centering device may be a centering apparatus 1, in particular a commercially available reflection centering apparatus, the structural principle of which can be seen in fig. 8. In one embodiment, the information indicative of the angle between the measured light and the reflected light is information of the position of the reflected core image of the centralizer on the display assembly of the centralizer. In one embodiment, the information indicative of the angle between the measured light and the reflected light is a distance vector of the location of the reflected core image of the centralizer on a display assembly of the centralizer from the origin of a display interface on the display assembly. The centering apparatus can be mounted on the base 6 by a rotary arm, and the collimated light of the centering apparatus can be adjusted to be focused vertically downward on one optical surface of an optical lens (an aspherical lens, such as the optical arc plate 01).
The assembling device of the optical lens is obtained by assembling the components. The assembly device can realize the positioning calibration (centering) of the optical lens and the structural member and the assembly of the optical-mechanical module, fix the structural member, place the lens on the structural member by the multi-dimensional adjusting structure, and adjust the relative position of the lens and the structural member by the optical centering device in cooperation with the multi-dimensional adjusting structure, thereby completing the assembly of the optical lens on the structural member.
The invention provides an assembling method of an optical-mechanical module by utilizing the optical lens assembling device, which comprises the following steps: attaching the optical lens to the multi-dimensional adjustment structure, the optical lens comprising a first face and an opposite second face; adjusting the relative position of the optical lens and the structural member to enable the rotational symmetry axis of the first surface of the optical lens and the structural member to be in a preset posture; fixing the optical lens to the structural member in the preset posture.
In a specific assembly embodiment, wherein the mounting reference of the optical lens assembly device comprises a mounting surface and a fixing component for preventing the structural member from rotating on the mounting surface, the adjusting the relative position of the optical lens and the structural member comprises: attaching the datum plane of the structural member to the mounting surface, and fixing the structural member by using the fixing assembly; and adjusting the relative position of the optical lens and the mounting surface so that the rotational symmetry axis of the first surface of the optical lens and the mounting surface form a preset angle.
In another specific assembly embodiment, wherein the mounting reference of the optical lens assembly apparatus includes a mounting surface and a fixing component for preventing the structural member from rotating on the mounting surface, wherein the adjusting the relative position of the optical lens and the structural member includes: attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly; emitting measuring light to the optical lens first face using the optical centering device; obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and the measurement light ray using the optical centering apparatus, the reflected light ray being formed by the measurement light ray being reflected by the first face of the optical lens; adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the measuring light ray to be smaller than a threshold value.
In yet another specific assembly embodiment, wherein the mounting datum of the optical lens assembly device includes a mounting surface and a fixing assembly for preventing the structural member from rotating on the mounting surface, wherein the adjusting the relative position of the optical lens and the structural member includes: attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly; emitting measuring light to the optical lens first face using the optical centering device; obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by reflection of the measurement light ray through the first face of the optical lens, using the optical centering apparatus; and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
In a more specific assembled embodiment, the method further comprises: rotating the gantry rotation stage such that the optical lens is in another pose different from a previous pose; and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens in the other posture and the normal of the reflection point to be smaller than a threshold value.
In a more specific assembled embodiment, the method further comprises: rotating the support rotating table; continuously determining the difference between the reflected light rays of the first face of the optical lens and the normal of the point of reflection during rotation; and adjusting the multi-dimensional adjusting structure until the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point is less than a threshold value during one rotation.
In a more specific assembled embodiment, the method further comprises: emitting measurement light rays towards the optical lens second face using the optical centering apparatus; obtaining information indicative of a difference between a reflected light ray of the second face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by the measurement light ray reflecting through the second face of the optical lens, using the optical centering apparatus; adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the second surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
In a more specific assembly embodiment, fixing the optical lens to the structural member in the preset posture comprises: and fixing the optical lens to the structural member in the preset posture by using a dispensing mode. Wherein the dispensing positions are symmetrical with respect to the geometric center of the optical lens. The dispensing mode utilizes at least one of UV glue, low-shrinkage resin quick-drying glue, hot melt glue or bi-component glue.
In one embodiment, when the centering apparatus is used for matching centering assembly, the fixing member 41 on the bracket rotating table 4 with a pre-calculated design can be used for positioning the structural member; then the three-dimensional adjusting platform 2 is used for adjusting the position of the optical lens relative to the structural member; the optical axis of the lens is adjusted through the two-dimensional adjusting frame 3 until a preset installation posture is reached. The specific operation is as follows: fixing the structure on mounting 41 of support revolving stage 4, placing the lens on the structure, utilize the horizontal displacement of two-dimensional sliding platform adjustment lens, utilize the centering appearance to observe lens offset and adjust to target in place, rotate the support revolving stage again, utilize the centering appearance to observe lens angular migration and use two-dimensional swivel mount adjustment is around X, Y axle adjust knob (32, 33), through once or many times observation and adjustment, until lens optical axis and optical lens assembly quality's installation face reaches and predetermines the mounted position.
The following further description is provided in conjunction with the accompanying drawings and application examples. The present application takes centering and assembling of the optical arc sheet and the AR bracket in the AR optical module component as an example, and illustrates that the positioning and calibration (centering) of the optical arc sheet and the structural component and the assembling of the optical module are realized by using the assembling device of the optical lens of the present invention.
AR optical module component
The structure of the AR optical module component described in this embodiment is shown in fig. 2, and includes an AR bracket 06, and an optical arc sheet 01, an optical flat sheet 02 and a display device 03 assembled on the bracket, where: the AR support 06 is a frame structure with a triangular cross section, a plane where one side of the triangular frame is located is defined as a reference plane 04, a plane where the other side of the triangular frame is located is provided with an optical arc sheet 01, a plane where the third side of the triangular frame is located is provided with an optical flat sheet 02, and an included angle between the reference plane 04 and the plane where the third side of the triangular frame is located is alpha.
This AR optical module component, can throw the light that display device 03 sent to on the optics plain film 02 as the spectroscope, optics plain film 02 reflects partly light, the concave surface inboard of reflection light projection to optics arc piece 01, then the reflection passes optics plain film 02 formation of image in people's eye, simultaneously, external light passes optics arc piece 01 and optics plain film 02 entering people's eye, use AR glasses person can see the physical object in the real world and the digital image that is generated by display device 03 simultaneously, realize augmented reality's function, can be used to in the AR glasses.
Assembly of optical arc pieces 01
In this embodiment, the optical arc piece 01 is positioned and mounted on the AR bracket 06 by using the assembling apparatus for optical lens shown in fig. 1, and the positioning calibration (centering) of the optical arc piece and the structural member and the assembling of the optical module are described.
The optical arc sheet 01 is assembled by means of an optical lens centering and adjusting system. As described above, fig. 1 shows the configuration of the optical arc sheet mounting and adjusting system, which includes the centering apparatus 1, the three-dimensional adjusting table mechanism 2, the two-dimensional adjusting frame 3, the holder rotating table 4, the pressing mechanism 5, and the base 6. Wherein:
in one embodiment, the base 6 is used for supporting the centering instrument 1, the three-dimensional adjusting platform adjusting mechanism 2, the two-dimensional adjusting frame 3, the support rotating table 4, the pushing mechanism 5 and the AR support 06, the AR support 06 is spatially limited in the Y-axis direction and the Z-axis direction of the AR support 06 through two pins on the fixing piece 41 of the support rotating table 4, and the portion, matched with the installation plane of the fixing piece 41 of the support rotating table 4, of the AR support 06 is closely attached to the installation plane of the fixing piece 41 through the limitation of the X-axis of the AR support 06 through the pushing mechanism 5. The installation consistency of the AR support 06 is guaranteed, and the preset position of the AR support is coincided with the center of a mechanical rotating shaft of the support rotating table.
In one embodiment, the centering device 1 is used for measuring a reflection core image of the optical arc piece 01 and detecting an optical axis position of the optical arc piece 01 based on the reflection core image. The centering apparatus 1 is capable of emitting measurement light to the optical lens and receiving corresponding reflected light, and obtaining information indicating the posture of the optical arc sheet 01 based on information indicating a difference (e.g., a difference in space) between the reflected light and the measurement light, that is, the position of the reflection core image. The optical arc piece 01 optical axis feedback device has the main function that the optical arc piece 01 optical axis position is fed back in the process of assembling the optical arc piece 01 on the AR support 06.
In one embodiment, the three-dimensional adjusting platform mechanism 2 is mainly installed on the support rotating table 4 for adjusting the initial position of the optical arc sheet 01, and small fine adjustment can be realized through a differential adjusting knob of an X, Y, Z shaft.
In one embodiment, the connecting platform 31 of the two-dimensional adjusting frame 3 is connected and locked with the Z-direction sliding platform of the three-dimensional adjusting platform by screws to form a 5-dimensional adjusting structure, and after the rotating platform of the two-dimensional adjusting frame is connected with the optical arc sheet 01, the five-dimensional adjusting mechanism is a driving mechanism capable of adjusting the front-back, left-right, vertical, pitching and rotating five dimensions, and can adjust the front-back, left-right, vertical, pitching angle and rotating angle of the optical arc sheet 01.
In one embodiment, the support rotating table 4 and the AR support 06 are fixed on the fixing member 41 of the support rotating table 4 by means of positioning pins, and the pressing mechanism is mounted on the support rotating table and pressed. The AR holder 06 is fixed to the fixing member 41 of the holder rotating table 4 by the pushing rod 52, and the movement locus of the reflection core on the centering apparatus determined by rotating the holder rotating table is adjusted within the acceptable region by the 5-dimensional adjusting mechanism.
In one embodiment, the assembly process includes the steps of:
1) the AR holder 06 is fixed to the holder rotating table 4, and the reference surface 04 of the AR holder is pressed against the mounting surface of the fixing member 41 by the pressing mechanism 5.
2) The optical arc sheet 01 is connected to a rotating platform component 31 of a two-dimensional adjusting frame 3 in the direction of X, Y, the position and the angle of the arc sheet are adjusted through a five-dimensional adjusting mechanism, and a bracket rotating platform 4 is rotated, so that the jumping amplitude of the reflection core image of the optical arc sheet 01 appearing on the centering instrument 1 around a scale of a display screen is in a required range, and as shown in figure 3, the reflection core image is required to fall into a qualified area.
3) And fixing the adjusted optical arc sheet 01 by using glue, preferably using UV glue for initial curing.
The curing is up-down symmetrical dispensing curing, or curing with longer bonding line or larger bonding area, and the distribution of the bonding area is required to be symmetrically distributed along the geometric center of the lens.
In one embodiment, the spot-on curing is performed using at least one of a UV glue, a low shrink resin quick-dry glue, a hot melt glue, or a two-component glue. When the UV adhesive is used, a UV lamp needs to be started for curing after the adhesive is dispensed.
In one embodiment, the step 2) "adjusting the angle of the arc piece with the five-dimensional adjusting platform" includes: after the arc sheet is connected with the two-dimensional adjusting frame, X, Y, Z-axis positioning adjustment is carried out on the arc sheet through adjusting the three-dimensional moving platform, a reflected image of the arc sheet appears on a display of the centering instrument, and then the X, Y-axis adjusting knob of the two-dimensional adjusting frame is rotated to realize angle adjustment of the arc sheet around the X, Y axis.
In one embodiment, the step 2) "rotating the gantry rotation table" is performed by: after the adjusting knob 32 around the X-axis is rotated to make the reflection core image pass through the center of the track on the display screen, the bracket rotating table is rotated for one circle to check the new track condition of the reflection core after the adjusting knob 32 around the X-axis is rotated, and if the track is larger than the original track, the adjusting knob of the X-axis is adjusted in the opposite direction. The carriage rotation stage is rotated about axis X, Y with each adjustment knob 32, 33 until the trajectory of the reflected core image is within the "acceptable area" of the display screen.
In one embodiment, the step 2) "rotating the gantry rotation table" operation comprises: the holder rotating table 4 is rotated so that the optical lens is in another posture different from the previous posture, and the reflected core image of the optical arc sheet 01 appearing on the centering instrument 1 is observed. If the reflective core image is greater than the threshold value, i.e., not in the "acceptable area", the adjustment stage is adjusted to return the reflective core image to the "acceptable area".
In one embodiment, the assembly process includes:
1) adjusting a centering instrument to determine a reflection core image of the first surface of the optical arc sheet 01;
2) rotating the support rotating table (4) for one circle to judge whether the track condition of the reflection core image is in a qualified area;
3) rotating the X, Y shaft adjusting knobs (32, 33) to make the reflecting core image track and rotating the bracket rotating table for one turn to check the track condition of the reflecting core image;
4) if the track is larger than the original track, the X, Y shaft adjusting knob is adjusted in the reverse direction; the carriage rotation stage is rotated about the X, Y axis adjustment knob (32, 33) each time the adjustment is made until the trajectory of the reflected core image is within the "acceptable area" of the display screen.
5) Then, adjusting the centering instrument to the reflection core image of the second surface of the optical arc sheet 01;
6) repeating the steps 2) to 4);
7) moving the centering instrument to find an image of the first surface reflection core;
8) and repeating the steps 2) to 5) until the tracks of the first and second plane reflection core images are all in the qualified area, and finishing the adjustment.
Quality inspection of optical machine module
The "centering device" is a common centering device, and is a device for checking the center deviation of a lens by observing the reflection image of the spherical center of the lens. The reflected image of the spherical center of the upper surface of the lens can be observed, and the reflected image of the spherical center of other surfaces in the lens system can also be observed (the principle structure is shown in figure 8). The center deviation can be determined with reference to the following operating steps:
a100, placing the detected lens in a clamp of a center instrument working platform;
a200, rotating the guide rail to enable the guide rail to move up and down;
a300, adjusting the relative distance between the optical system of the centering instrument and the detected lens, finding out the surface image position of the upper surface of the detected lens, and placing a small piece of aiming drawing paper on the upper surface of the lens to observe clear cross-shaped bright spots;
a400, finding and adjusting the surface image of the A3 clearly by utilizing the large visual field of an observation eyepiece, recording the surface image as a '0' position, then calculating the numerical values of the first and second surface spherical center images according to software, starting from the '0' position, rotating a hand wheel, moving an optical system to a corresponding numerical value position, wherein a plus 'number represents upward movement, and a minus' number represents downward movement until a clear cross image is found in the visual field of the eyepiece, then returning the switching pull rod of the eyepiece and the monitor to the original position, resuming the observation by the monitor, and rotating the hand wheel to adjust clearly;
a500, after finding the spherical center image of the detected surface, rotating the detected lens on the rotating platform of the bracket, and detecting the moving track of the reflection core image on the display screen in the rotation process of the detected lens in an external monitor;
and A600, calculating whether the detection lens is in a qualified area or not through a scale table on a display screen.
The optical arc sheet 01 is assembled on the AR bracket 06 through the processes to form an optical machine module, the assembling error detection is carried out by an optical centering method, and the result is as follows: the optical axis reflection core track of the optical arc sheet adjusted by the optical centering method is controlled within a preset index to ensure that the angle deviation of the optical-mechanical module is within a design range during binocular adjustment, and the AR support can ensure the consistency of positioning and assembly by the assembling and positioning mode, so that the optical axis deviation of each optical-mechanical module is controlled in a qualified area, which shows that the optical arc sheet 01 adjustment mode of the optical-mechanical module by the optical centering mode can ensure that the optical-mechanical module reaches the design specification.
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 (22)
1. An optical lens fitting apparatus for mounting an optical lens on a structure, at least a portion of at least one optical surface of the optical lens being a portion of a rotational symmetry plane, wherein an outer diameter of the optical lens is rotationally symmetric or non-rotationally symmetric, the apparatus comprising a multi-dimensional adjustment mechanism and an optical centering device for determining a rotational symmetry axis of the rotational symmetry plane, wherein the optical centering device is configured to enable light emitted by the optical centering device to fall on the optical lens, the multi-dimensional adjustment mechanism is configured to detachably connect an optical lens and to adjust a relative position of the optical lens to a mounting reference of the optical lens fitting apparatus; preferably, the mounting datum comprises a mounting surface and a fixing assembly for preventing rotation of the structural member on the mounting surface; more preferably, the optical axis of the optical centering device is at an angle of between 30 and 60 degrees to the mounting surface.
2. The optical lens piece assembling apparatus according to claim 1, wherein the multidimensional adjustment mechanism includes at least a sliding platform and a rotating frame, the sliding platform is a two-dimensional sliding platform composed of an X-direction sliding platform and a Y-direction sliding platform in a horizontal direction, or a three-dimensional sliding platform composed of an X-direction sliding platform, a Y-direction sliding platform, and a Z-direction sliding platform in a vertical direction; the rotating frame is a two-dimensional rotating frame consisting of an X-direction rotating table and a Y-direction rotating table in the horizontal direction, or a three-dimensional rotating frame consisting of an X-direction rotating table, a Y-direction rotating table and a Z-direction rotating table in the vertical direction; x, Y, Z are oriented orthogonally.
3. The optical lens fitting device according to claim 2, wherein the multidimensional adjustment mechanism is a four-dimensional adjustment mechanism, a five-dimensional adjustment mechanism, or a six-dimensional adjustment mechanism;
the four-dimensional adjusting mechanism comprises the two-dimensional sliding platform and a two-dimensional rotating frame;
the five-dimensional adjusting mechanism comprises the two-dimensional sliding platform and a three-dimensional rotating frame, or comprises the three-dimensional sliding platform and the two-dimensional rotating frame;
the six-dimensional adjusting mechanism comprises the three-dimensional sliding platform and a three-dimensional rotating frame.
4. An optical lens assembling apparatus according to claim 2 or 3, wherein the rotation axis of the X-direction rotation stage, the rotation axis of the Y-direction rotation stage and the rotation axis of the Z-direction rotation stage of the rotating frame are at a distance of 20 mm or less from each other, preferably the rotation axes of the X, Y-direction rotation stages are substantially coincident with each other, more preferably the rotation axis of the Z-direction rotation stage is substantially coincident with the optical axis of the centering instrument through X, Y rotation axes.
5. An optical lens fitting apparatus according to any of claims 1 to 4, characterized in that the optical centering device is a centering instrument, the apparatus being provided with a support rotation stage (4) rotatable along a central axis for holding a structure, preferably with a rotation axis coinciding with the optical axis position of the centering instrument; preferably, the support rotation table (4) is horizontally rotatable.
6. An optical lens fitting apparatus according to claim 5, wherein the mounting reference is detachably provided on a stand rotating table (4).
7. The device for assembling optical lenses according to claim 6, wherein the support carousel (4) has a cylindrical shape, and a fixing member (41) for fixing the structure extends from the upper surface thereof, the fixing member being configured to maintain a predetermined axial position of the structure fixed to the fixing member coincident with the rotational axis of the support carousel.
8. An optical lens fitting arrangement according to claim 7, characterised in that the fixture is provided with a positioning reference as a mounting surface for the mounting reference, the reference surface (04) of the structural member being mounted in alignment with the positioning reference of the fixture.
9. The optical lens fitting apparatus according to claim 8, wherein the positioning reference of the fixing member is in a predetermined posture with respect to the rotation axis of the holder rotating table; preferably, the positioning datum comprises a positioning plane, and the positioning plane and a rotating shaft of the bracket rotating table form a preset angle; preferably, the positioning plane is parallel to a rotation axis of the gantry rotation table.
10. An optical lens fitting arrangement according to any of claims 1 to 9, characterized in that the positioning reference fixing assembly further comprises a pressing mechanism (5) for pressing the building element against the fixing element (41) for fixing the building element.
11. The optical lens fitting device according to any of claims 5 to 10, characterized in that the multi-dimensional adjustment mechanism is located on a support rotation stage (4) and the rotation axis of at least one of the rotation stages of the multi-dimensional adjustment mechanism coincides with the central axis of the support rotation stage.
12. A method for assembling an opto-mechanical module using the optical lens assembling apparatus according to any one of claims 1 to 11, comprising:
attaching the optical lens to the multi-dimensional adjustment structure, the optical lens comprising a first face and an opposite second face;
adjusting the relative position of the optical lens and the structural member to enable the rotational symmetry axis of the first surface of the optical lens and the structural member to be in a preset posture;
fixing the optical lens to the structural member in the preset posture.
13. The method of claim 12, wherein the mounting datum of the optical lens mounting device includes a mounting surface and a securing assembly for preventing rotation of the format on the mounting surface, the adjusting the relative position of the optical lens and the format comprising:
attaching the datum plane of the structural member to the mounting surface, and fixing the structural member by using the fixing assembly;
and adjusting the relative position of the optical lens and the mounting surface so that the rotational symmetry axis of the first surface of the optical lens and the mounting surface form a preset angle.
14. The method of claim 12, wherein the mounting datum of the optical lens mounting device includes a mounting surface and a fixing assembly for preventing rotation of the format on the mounting surface, wherein the adjusting the relative position of the optical lens and the format comprises:
attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly;
emitting measuring light to the optical lens first face using the optical centering device;
obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and the measurement light ray using the optical centering apparatus, the reflected light ray being formed by the measurement light ray being reflected by the first face of the optical lens;
adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the measuring light ray to be smaller than a threshold value.
15. The method of claim 12, wherein the mounting datum of the optical lens mounting device comprises a mounting surface and a fixture assembly for preventing rotation of the format on the mounting surface, wherein the adjusting the relative position of the optical lens and the format comprises:
attaching the datum plane of the structural member to the mounting surface on a bracket rotating table of the optical lens assembling device, and fixing the structural member by using the fixing assembly;
emitting measuring light to the optical lens first face using the optical centering device;
obtaining information indicative of a difference between a reflected light ray of the first face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by reflection of the measurement light ray through the first face of the optical lens, using the optical centering apparatus;
and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
16. The method of claim 15, further comprising:
rotating the gantry rotation stage such that the optical lens is in another pose different from a previous pose;
and adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the first surface of the optical lens in the other posture and the normal of the reflection point to be smaller than a threshold value.
17. The method of claim 15, further comprising:
rotating the support rotating table;
continuously determining the difference between the reflected light rays of the first face of the optical lens and the normal of the point of reflection during rotation;
and adjusting the multi-dimensional adjusting structure until the difference between the reflected light ray of the first surface of the optical lens and the normal of the reflection point is less than a threshold value during one rotation.
18. The method of any of claims 15 to 17, further comprising:
emitting measurement light rays towards the optical lens second face using the optical centering apparatus;
obtaining information indicative of a difference between a reflected light ray of the second face of the optical lens and a normal to a point of reflection, the reflected light ray being formed by the measurement light ray reflecting through the second face of the optical lens, using the optical centering apparatus;
adjusting the multi-dimensional adjusting structure to enable the difference between the reflected light ray of the second surface of the optical lens and the normal of the reflection point to be smaller than a threshold value.
19. The method of any one of claims 12 to 18, wherein securing the optical lens to the structural member in the preset pose comprises: and fixing the optical lens to the structural member in the preset posture by using a dispensing mode.
20. The method of claim 19, wherein dispensing positions are symmetrical with respect to a geometric center of the optical lens.
21. The method of claim 19 or 20, wherein the dispensing means utilizes at least one of a UV glue, a low shrink resin quick-dry glue, a hot melt glue, or a two-component glue.
22. The method according to any one of claims 12 to 21, wherein the structure is an AR bracket (06) and the optical lens is an optical arc sheet (01) in an AR optical module component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141566.9A CN111610639A (en) | 2019-02-26 | 2019-02-26 | Optical lens assembling device and assembling method of optical-mechanical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910141566.9A CN111610639A (en) | 2019-02-26 | 2019-02-26 | Optical lens assembling device and assembling method of optical-mechanical module |
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| CN111610639A true CN111610639A (en) | 2020-09-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114485533A (en) * | 2021-12-28 | 2022-05-13 | 浙江大学嘉兴研究院 | Device and method for measuring axis of quadric surface optical element |
| TWI777876B (en) * | 2021-12-21 | 2022-09-11 | 亞泰影像科技股份有限公司 | Lens centering module and its centering method, scanning device |
-
2019
- 2019-02-26 CN CN201910141566.9A patent/CN111610639A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI777876B (en) * | 2021-12-21 | 2022-09-11 | 亞泰影像科技股份有限公司 | Lens centering module and its centering method, scanning device |
| CN114485533A (en) * | 2021-12-28 | 2022-05-13 | 浙江大学嘉兴研究院 | Device and method for measuring axis of quadric surface optical element |
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