CN113740988A

CN113740988A - Automatic coupling packaging equipment for micro-lens

Info

Publication number: CN113740988A
Application number: CN202111082443.6A
Authority: CN
Inventors: 段吉安; 彭晋文; 唐佳; 卢胜强; 徐聪
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-12-03
Anticipated expiration: 2041-09-15
Also published as: CN113740988B

Abstract

The invention provides a micro-lens automatic coupling packaging device, which comprises a lens charging component, a lens clamp component, a device clamping component, a dispensing curing component and a visual detection component, the lens charging component comprises a charging tray and a transfer platform arranged on one side of the charging tray, the charging tray charges the micro lenses, the transfer table is used for temporarily carrying the micro lens to be coupled, the device clamping component clamps and positions the optical device, the lens clamp component clamps and places the micro lens in the material tray on the transfer table, then re-clamps and moves the micro lens on the transfer table to the coupling position of the optical device to complete coupling, so as to ensure that the relative positions of the micro lens and the clamping part of the lens clamp component are accurate, therefore, the lens clamp assembly can be accurately positioned, so that the position deviation generated by taking materials by the lens clamp assembly is corrected, and the coupling precision of the micro lens is improved.

Description

Automatic coupling packaging equipment for micro-lens

Technical Field

The invention relates to the technical field of semiconductor lasers, in particular to automatic coupling and packaging equipment for a micro lens.

Background

The semiconductor laser has the characteristics of small volume, light weight, high efficiency, long service life and the like, can be pumped by adopting a simple current injection mode, has working voltage and current compatible with an integrated circuit, can be integrated with the integrated circuit in a single chip, and can also be directly subjected to current modulation by using the frequency up to GHz to obtain high-speed modulated laser output. Because of these advantages, semiconductor lasers have been widely used in laser communication, optical storage, optical gyro, laser printing, ranging, radar, and the like.

With the development of practical engineering, the output power of semiconductor lasers is required to be higher and higher. A semiconductor laser generally has a micro collimating lens (for example, a micro collimating lens with a width of 0.6 mm), and in order to ensure output power, the collimating lens requires high coupling precision, and the coupling position needs to be precisely adjusted in each direction. Since the size of the micro collimating lens is extremely small, the position accuracy of the micro collimating lens in the tray may not be guaranteed, and therefore, the clamping of the coupling clamp to the lens also causes the phenomenon of inaccurate positioning, which causes the reduction of the coupling accuracy and even the coupling failure, and needs to be improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the automatic coupling packaging equipment for the micro-lens, which can effectively improve clamping and coupling precision.

In order to achieve the above object, the present invention provides an automatic microlens coupling and packaging apparatus, which includes a lens charging assembly, a lens clamp assembly, a device clamping assembly, a dispensing curing assembly, and a vision inspection assembly; the lens subassembly of feeding includes the charging tray and sets up the transfer table of charging tray one side, the charging tray is to the microlens feeding, the transfer table is used for bearing temporarily the microlens of treating the coupling, device centre gripping subassembly is to the optical device centre gripping location, lens anchor clamps subassembly will microlens centre gripping in the charging tray is placed in the transfer table, will again the microlens centre gripping on the transfer table is again moved to the coupling position completion coupling of optical device, the solidification is glued to the microlens point after the coupling to the point solidification subassembly, visual detection subassembly is to the position of feeding, transfer position and the coupling position visual detection of microlens.

Further, the charging tray sets up the top at the charging tray support column, the bottom and the charging tray displacement module of charging tray support column are connected, be formed with a plurality of draw-in grooves in the charging tray, every place a plurality of microlenses in the draw-in groove, the transfer platform be the column, with the front side of charging tray is connected, microlens place in the upper surface of transfer platform.

Further, the lens clamp assembly comprises a clamp connecting seat, the clamp connecting seat is connected with the clamp displacement module and has three-axis translation freedom, and a micro-lens clamping part for clamping the micro-lens is connected onto the clamp connecting seat.

Further, the microlens clamping part comprises a clamp servo motor, the first end of the clamp servo motor is provided with two guide rail grooves which are parallel to each other, each guide rail groove is internally provided with a sliding block, a control block is fixedly arranged on the sliding block, each lens chuck is fixedly arranged on the outer side of the control block, a cam is sleeved on a rotating shaft of the clamp servo motor, the two sides of the cam are respectively contacted with the inner sides of the control blocks, the cam is positioned between the outer side and the inner side of each control block, the two control blocks are driven to move in opposite directions during rotation to form two clamping actions of the lens chucks, and the bottom end of the lens chuck is adapted to the shape of the microlens.

Further, device centre gripping subassembly includes device centre gripping platform, be formed with the positioning groove to the optical device location on the device centre gripping platform, one side of device centre gripping platform is connected with hold-down mechanism, hold-down mechanism will optical device in the positioning groove compresses tightly fixedly, the bottom of device centre gripping platform is connected with the device motion module, the device motion module includes two translation degrees of freedom and two rotational degrees of freedom.

Further, device centre gripping subassembly still includes the coupling and detects the camera, the camera lens of coupling detection camera is aimed at the light-emitting window of optical device, the coupling detects the camera and is connected with the coupling detection module, the coupling detection module with the emergent light parallel arrangement of optical device.

Or the device clamping assembly further comprises a light power integrating sphere system, and the light power integrating sphere system is in butt joint with the outlet optical fiber of the optical device.

Further, the dispensing curing assembly comprises a dispensing displacement module, the dispensing displacement module is connected with the clamp connecting seat, and a dispensing head is arranged on the dispensing displacement module.

Further, the dispensing curing assembly further comprises a dispensing test platform, the dispensing test platform is connected with the material tray, and the dispensing test platform is a dispensing test position of the dispensing head.

Further, the visual inspection subassembly includes first visual inspection camera and second visual inspection camera, first visual inspection camera and second visual inspection camera all sets up a plurality ofly, first visual inspection camera is right the charging tray and revolving stage visual inspection, second visual inspection camera is to the coupling position visual inspection of optical device.

The scheme of the invention has the following beneficial effects:

according to the automatic coupling packaging equipment for the micro-lens, the transfer table is connected to one side of the material tray of the lens material loading assembly, and through the arrangement of the transfer table, the lens clamp assembly is placed on the transfer table after clamping the micro-lens in the material tray, then the position is adjusted and the clamping is carried out for the second time, so that the relative position of the micro-lens and the clamping part of the lens clamp assembly is ensured to be accurate, the micro-lens is accurately positioned by the lens clamp assembly, the position deviation generated by material taking of the lens clamp assembly is corrected, and the coupling precision of the micro-lens is improved;

other advantages of the present invention will be described in detail in the detailed description that follows.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a lens loading assembly, a lens holder assembly and a dispensing curing assembly according to the present invention;

FIG. 3 is a schematic view of a microlens clamping portion according to the present invention;

FIG. 4 is a schematic view of a device holding assembly of the present invention;

FIG. 5 is a schematic diagram of a light device structure;

FIG. 6 is a schematic diagram of a coupling detection structure according to the present invention.

[ description of reference ]

100-a lens charge assembly; 101-a tray; 102-a transfer table; 103-tray support column; 104-tray displacement module; 105-a card slot; 106-a waste chute; 200-a lens holder assembly; 201-clamp connection mount; 202-a clamp displacement module; 203-a microlens clamping section; 204-a clamp servo motor; 205-guide rail groove; 206-a slider; 207-control block; 208-a lens holder; 209-cam; 300-a device holding assembly; 301-a device holding platform; 302-positioning the groove; 303-a pressing mechanism; 304-a device motion module; 305-a coupling detection camera; 306-a coupling detection module; 400-dispensing curing assembly; 401-dispensing displacement module; 402-dispensing head; 403-spotting of the glue platform; 500-a visual inspection assembly; 501-a first vision inspection camera; 502-a second visual detection camera; 600-a microlens; 700-optical device.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a locked connection, a releasable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, an embodiment of the present invention provides a microlens automatic coupling packaging apparatus, which is provided with a lens loading assembly 100, a lens clamp assembly 200, a device holding assembly 300, a dispensing curing assembly 400, and a vision inspection assembly 500. The lens charging assembly 100 comprises a tray 101 and a transfer table 102 arranged on one side of the tray 101, a microlens 600 to be coupled and encapsulated is arranged in the tray 101, the transfer table 102 is used for temporarily bearing the microlens 600 to be coupled, the device clamping assembly 300 clamps and positions the optical device 700, the lens clamp assembly 200 clamps and places the microlens 600 in the tray 101 on the transfer table 102, the microlens 600 on the transfer table 102 is clamped again and moved to a coupling position of the optical device 700 to complete coupling, the dispensing and curing assembly 400 dispenses and cures the coupled microlens 600, and the visual detection assembly 500 visually detects the charging position, the transfer position and the coupling position of the microlens 600.

Since the microlens 600 is extremely small in size, the position where the microlens 600 is fed to the tray 101 may be deviated, and thus the gripping of the microlens 600 by the lens holder assembly 100 may also be deviated. Through the arrangement of the transfer table 102, the lens clamp assembly 100 is placed on the transfer table 102 after clamping the micro lens 600 in the material tray 101, then the position is adjusted and the clamping is performed again, so that the relative position between the micro lens 600 and the clamping part is accurate, the lens clamp assembly 100 is accurately positioned, the position deviation generated by material taking of the lens clamp assembly 100 is corrected, and the coupling precision of the micro lens 600 is improved.

In this embodiment, the charging tray 101 is arranged on the top end of the charging tray supporting column 103, the bottom end of the charging tray supporting column 103 is connected with the charging tray displacement module 104, and the charging tray supporting column 103 and the charging tray 101 are driven by the charging tray displacement module 104 to displace, so that the micro-lens 600 can be conveniently loaded. A plurality of clamping grooves 105 are formed in the tray 101, a plurality of micro lenses 600 are placed in each clamping groove 105, and the bottoms of the clamping grooves 105 are in contact with the lower surfaces of the micro lenses 600, so that the micro lenses 600 are prevented from inclining.

The transfer table 102 is provided in a column shape, is connected to the front side of the tray 101, and is higher than the upper surface of the tray 101. The microlens 600 is picked up by the lens holder assembly 200, placed on the upper surface of the transfer table 102, and then picked up twice.

As a further improvement, a waste material groove 106 is connected to one side of the tray 101 in this embodiment, and when the coupling of the microlens 600 fails, the lens holder assembly 200 returns to above the lens loading assembly 100, and a defective product is placed in the waste material groove 106, and a new microlens 600 in the tray 101 is picked up again to start the coupling process.

Referring to fig. 2 again, the lens holder assembly 200 includes a holder connector 201, the holder connector 201 is connected to the holder displacement module 202, and has three-axis translational freedom, and the holder connector 201 is connected to a microlens holding portion 203 for holding the microlens 600. The jig displacement module 202 controls the microlens holding section 203 to transfer the microlens 600 from the lens loading module 100 to the device holding module 300, and controls the coupling operation of the microlens holding section 203 at the coupling position, so that the microlens 600 is coupled with the optical device 700 by fine adjustment of three translational degrees of freedom, and the coupling accuracy meets the requirement.

As shown in fig. 3, the microlens holding portion 203 in this embodiment includes a holder servo motor 204, a first end of a housing of the holder servo motor 204 is provided with two parallel guide rail grooves 205, a slider 206 is disposed in each guide rail groove 205, a control block 207 is fixedly disposed on the slider 206, a lens holder 208 is fixedly disposed on an outer side of each control block 207, and the two control blocks 207 are rotationally symmetric with respect to a rotation axis of the holder servo motor 204. Meanwhile, the rotating shaft is sleeved with a cam 209, two sides of the cam 209 are respectively contacted with the inner sides of two control blocks 207, the cam 209 is positioned between the outer side and the inner side of each control block 207, the downward extending part of the inner side of each control block 207 is in surface contact with the cam 209, and the outward extending part of the outer side of each control block 207 is used as a mounting connection part of the lens chuck 208. When the cam 209 rotates, both ends of the larger outer diameter gradually come into contact with the inner sides of the control blocks 207, thereby driving the two control blocks 207 to move toward each other along the guide rail groove 205, resulting in a clamping action of the two lens chucks 208. When the cam 209 is rotated to the end with the smaller outer diameter to come close to the control block 207, the control block 207 and the lens holder 208 are released, and the held microlens 600 is lowered. Therefore, the clamping and opening operations of the lens chuck 208 can be switched easily by the clamp servo motor 204, and the method is suitable for clamping control of the microlens 600.

As shown in fig. 4 and 5, the device holding assembly 300 includes a device holding platform 301, and a positioning groove 302 for positioning the optical device 700 is formed on the device holding platform 301, and matches with the external shape of the optical device 700. A pressing mechanism 303 is connected to one side of the device holding platform 301, and the pressing mechanism 303 can be controlled manually or automatically to press and fix the optical device 700 mounted in the positioning groove 302. The bottom end of the device clamping platform 301 is connected with the device moving module 304, the device moving module 304 comprises two translational degrees of freedom and two rotational degrees of freedom, the device clamping platform 301 is adjusted to a preset horizontal position and an angle in a manual adjustment or automatic adjustment mode, and the position accuracy of the optical device 700 during coupling packaging is ensured.

As shown in fig. 6, the device holding assembly 300 further includes a coupling detection camera 305, a lens of the coupling detection camera 305 is aligned with the light outlet of the optical device 700, the coupling detection camera 305 is connected to the coupling detection module 306, and the coupling detection module 306 is disposed parallel to the light outlet of the optical device 700, so as to ensure that the lens is aligned with the light outlet of the optical device 700 when the coupling detection camera 305 moves to any position. By adjusting the distance between the coupling detection camera 305 and the optical device 700, the coupling detection camera 305 detects the positions of the light spots at the near point and the far point respectively, and the coupling precision of the microlens 600 is confirmed, and compared with the form of a fixed detection light spot, the mobile coupling detection camera 305 provided by the embodiment has higher detection precision and reliability.

In another embodiment, the exit end of the optical device 700 is provided with an exit fiber, such that the exiting light is directed out through the exit fiber. The device holding assembly 300 includes a light power integrating sphere system, which is in butt joint with the exit optical fiber of the optical device 700, and detects the light power of the emergent light to determine whether the coupling precision meets the requirement.

Referring to fig. 2 again, the dispensing curing assembly 400 includes a dispensing displacement module 401, the dispensing displacement module 401 is connected to the fixture connecting seat 201, and a dispensing head 402 is disposed on the dispensing displacement module 401, the dispensing head 402 can perform three-axis translation along with the fixture connecting seat 201, when the microlens clamping portion 203 on the fixture connecting seat 201 completes the coupling of the microlens 600, the dispensing curing assembly 400 is displaced along with the fixture connecting seat 201, so that the dispensing head 402 is aligned with the coupling position of the microlens 600, and the dispensing displacement module 401 drives the dispensing head 402 to move down to dispense the dispensing position of the microlens 600. In addition, the dispensing curing assembly 400 further includes a curing device (not shown), through which the dispensed microlenses 600 are cured.

Since the dispensing amount of the microlens 600 is also small, in order to avoid excessive ejection of the glue solution due to the blockage of the dispensing head 402, the dispensing curing assembly 400 in this embodiment further includes a dispensing testing platform 403, the dispensing testing platform 403 is located on one side of the tray 101 and connected to the tray 101, and the dispensing testing platform 403 is a dispensing testing position of the dispensing head 402. Preferably, when the microlens holding section 203 is located right above the device holding platform 301, the dispensing head 402 is located right above the trial dispensing platform 403, the dispensing head 402 completes trial dispensing in the coupling process of the microlens 600, the normal injection of the glue solution is confirmed, and insufficient or excessive injection during the subsequent formal dispensing of the microlens 600 is avoided, so that the dispensing quality is improved.

Referring again to fig. 1 and 2, the vision inspection assembly 500 includes a first vision inspection camera 501 corresponding to the lens loading assembly 100 and a second vision inspection camera 502 corresponding to the device holding assembly 300. The first vision inspection camera 501 and the second vision inspection camera 502 are provided in plurality, the first vision inspection camera 501 performs vision inspection on the tray 101, the transfer table 102, the spot gluing platform 403 and the like, positions the clamping position of the micro lens 600 and monitors the spraying condition of the spot gluing head 402, and the second vision inspection camera 502 performs vision inspection on the coupling position of the optical device 700, so that the coupling and spot gluing curing processes of the micro lens 600 are completed under the feedback control of the second vision inspection camera 502.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The automatic micro-lens coupling packaging equipment is characterized by comprising a lens charging assembly, a lens clamp assembly, a device clamping assembly, a dispensing curing assembly and a visual detection assembly; the lens subassembly of feeding includes the charging tray and sets up the transfer table of charging tray one side, the charging tray is to the microlens feeding, the transfer table is used for bearing temporarily the microlens of treating the coupling, device centre gripping subassembly is to the optical device centre gripping location, lens anchor clamps subassembly will microlens centre gripping in the charging tray is placed in the transfer table, will again the microlens centre gripping on the transfer table is again moved to the coupling position completion coupling of optical device, the solidification is glued to the microlens point after the coupling to the point solidification subassembly, visual detection subassembly is to the position of feeding, transfer position and the coupling position visual detection of microlens.

2. The automatic microlens coupling and packaging device of claim 1, wherein the tray is disposed on top of a tray support column, bottom of the tray support column is connected to a tray displacement module, a plurality of slots are formed in the tray, a plurality of microlenses are placed in each slot, the transfer table is columnar and connected to the front side of the tray, and the microlenses are placed on the upper surface of the transfer table.

3. A microlens automated coupling encapsulation apparatus according to claim 1, wherein the lens holder assembly comprises a holder connection seat connected with a holder displacement module, having three-axis translational degrees of freedom, and connected with a microlens holding part for holding the microlens.

4. A microlens automatic coupling packaging device according to claim 3, wherein the microlens clamping part comprises a clamp servo motor, the first end of the clamp servo motor is provided with two guide rail grooves which are parallel to each other, a slide block is arranged in each guide rail groove, a control block is fixedly arranged on each slide block, a lens chuck is fixedly arranged on the outer side of each control block, a cam is sleeved on a rotating shaft of the clamp servo motor, two sides of the cam are respectively contacted with the inner sides of the two control blocks, the cam is positioned between the outer side and the inner side of each control block, the two control blocks are driven to move oppositely during rotation to form clamping actions of the two lens chucks, and the bottom end of the lens chuck is adapted to the shape of the microlens.

5. The automatic microlens coupling and packaging device of claim 1, wherein the device clamping assembly comprises a device clamping platform, a positioning groove for positioning the optical device is formed on the device clamping platform, a pressing mechanism is connected to one side of the device clamping platform, the pressing mechanism presses and fixes the optical device in the positioning groove, a device moving module is connected to the bottom end of the device clamping platform, and the device moving module comprises two translational degrees of freedom and two rotational degrees of freedom.

6. The automatic microlens coupling and packaging apparatus of claim 5, wherein the device clamping assembly further comprises a coupling detection camera, a lens of the coupling detection camera is aligned with the light outlet of the optical device, the coupling detection camera is connected with the coupling detection module, and the coupling detection module is arranged in parallel with the emergent light of the optical device.

7. A microlens auto-coupling encapsulation apparatus according to claim 5, wherein the device holding assembly further comprises an optical power integrating sphere system that interfaces with an exit optical fiber of the optical device.

8. The automatic microlens coupling and packaging apparatus of claim 3, wherein the dispensing and curing assembly includes a dispensing displacement module, the dispensing displacement module is connected to the fixture connecting seat, and a dispensing head is disposed on the dispensing displacement module.

9. The automatic microlens coupling and packaging device of claim 8, wherein the dispensing and curing assembly further comprises a dispensing test platform, the dispensing test platform is connected to the tray, and the dispensing test platform is a dispensing test position of the dispensing head.

10. A microlens automatic coupling packaging apparatus according to claim 1, wherein the vision inspection assembly includes a plurality of first vision inspection cameras and a plurality of second vision inspection cameras, the first vision inspection cameras visually inspect the tray and the transfer table, and the second vision inspection cameras visually inspect the coupling position of the optical device.