CN111077627A - Rapid centering gluing device and method for micro lens - Google Patents
Rapid centering gluing device and method for micro lens Download PDFInfo
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- CN111077627A CN111077627A CN201911414343.1A CN201911414343A CN111077627A CN 111077627 A CN111077627 A CN 111077627A CN 201911414343 A CN201911414343 A CN 201911414343A CN 111077627 A CN111077627 A CN 111077627A
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- lens
- centering
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- gluing
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/025—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using glue
Abstract
The invention discloses a micro lens rapid centering and gluing device and a method, which relate to the technical field of micro optical lens centering processing, the micro lens rapid centering and gluing device and the method adopt a centering principle of a reflection type centering instrument, and a micro shaping objective lens is added on the basis of an internal focusing and self-collimating centering instrument, so that a spherical center reflection image point of a light source can be shaped to be less than phi 0.05mm, so that a spherical center reflection image for observation can be formed conveniently, the problem that the existing centering instrument cannot be used for centering and gluing of a micro lens is solved, the centering and gluing precision of the micro lens is effectively improved, the imaging quality of a micro optical system is ensured, a rapid adjusting mechanism is arranged aiming at the characteristics of the micro lens, and the adjusting efficiency and the adjusting quality can be effectively improved.
Description
Technical Field
The invention relates to the technical field of micro optical lens centering processing, in particular to a micro lens rapid centering gluing device and a micro lens rapid centering gluing method.
Background
With the ever-increasing market demand of micro optical imaging products such as micro cameras, medical endoscopes, micro microscopes and the like, higher and higher requirements are put forward on the micro performance and high definition of a micro optical imaging system. Meanwhile, the micro optical imaging product has small volume and compact structure, and is difficult to meet the requirements of the system by adjustment and calibration, and basically, the micro optical imaging product is guaranteed by the processing precision of parts, so that higher requirements are provided for the processing technology of micro optical lenses.
In order to ensure that the optical system has good imaging quality, two or more optical lenses are generally required to be glued together, and if the optical axes of the lenses do not coincide, central deviation is generated, which causes image quality deterioration of the glued lens and affects the imaging quality of the optical system, so that centering correction is generally required during gluing of the optical lenses.
At present, two methods of mechanical centering and centering by a centering instrument are mainly adopted in the actual production and processing of the lens. The mechanical centering gluing has the advantages of low cost, simple and convenient operation, high centering speed and high efficiency, but has the defects of low precision, poor consistency and uncorrectable eccentric amount, and is rarely adopted in the processing of high-precision products. Although the centering gluing of the centering instrument has the defects of high cost, complex operation, low centering speed and the like, the centering instrument has the advantages of measurable and adjustable center deviation and high adjusting and centering precision, and is a preferred centering gluing method for processing high-precision products.
The principle of the centering device is that an internal focusing centering device is used for respectively observing a focal point transmission image or a spherical center reflection image of a light source passing through a lens to determine the eccentricity condition, and corresponding adjustment and centering are carried out according to the condition.
When the micro lens with the diameter less than 3mm, especially less than 1mm, is subjected to centering gluing, the existing centering instrument has the problems that the light source point is large and a focus transmission image or a spherical center reflection image cannot be formed no matter in a transmission type or a reflection type, and the centering of the micro lens cannot be completed; in addition, because the lens is too fine, the existing adjusting mode is not suitable, and the adjusting speed is slow; moreover, for the lens gluing with high center deviation precision, the requirement on the consistency of the outer diameter of the lens is higher, and the difficulty in processing the single lens is improved.
Disclosure of Invention
The invention provides a micro lens rapid centering gluing device and a micro lens rapid centering gluing method according to the defects of the prior art, and aims to solve the problems in micro lens processing and realize high-precision rapid centering gluing of a micro optical lens.
The invention adopts the centering principle of a reflective centering instrument, and adds a micro-shaping objective lens on the basis of an internal focusing auto-collimation centering instrument, so that the spherical center reflection image point of a light source can be shaped to be less than phi 0.05mm, and a spherical center reflection image for observation can be conveniently formed; the quick clamping mechanism is arranged to facilitate quick replacement of the part to be glued; the rapid adjusting mechanism is arranged, so that the adjusting efficiency and the adjusting quality are improved; the workpiece rotating mechanism is arranged to facilitate judging whether the optical axis of the lens is coincident with the reference axis; the internal focusing auto-collimation centering device adopts a digital type, converts the image of the centering device into a digital signal through a camera, transmits the digital signal into an embedded industrial personal computer of an interactive display control system through a coaxial cable, displays the digital signal on a screen of the industrial personal computer, enlarges or reduces the image according to the condition, and is convenient for observing the centering condition of the lens.
In order to achieve the purpose, the invention provides the following scheme:
a micro lens rapid centering gluing device comprises a workpiece rotating mechanism, a rapid clamping mechanism, an internal focusing and auto-collimation centering instrument, a centering instrument base, a rapid adjusting mechanism and an interactive display control system; the rotating shaft of the workpiece rotating mechanism is the standard of the centering gluing device and is positioned in the center of the substrate; the quick clamping mechanism is arranged on the workpiece rotating mechanism, and the central axes of the quick clamping mechanism and the workpiece rotating mechanism are superposed; the centering instrument base and the quick adjusting mechanism are both arranged on the base plate, are positioned around the workpiece rotating mechanism and form an angle of 90 degrees with each other; the central axis of the ejector rod on the rapid adjusting mechanism is vertical to and intersected with the rotation axis of the workpiece rotating mechanism; the internal focusing and auto-collimation centering device is positioned on the sliding table of the centering device base and right above the workpiece rotating mechanism, and meanwhile, the central axis of the internal focusing and auto-collimation centering device is superposed with the rotating axis of the workpiece rotating mechanism; and a camera on the internal focusing auto-collimation centering instrument is connected with the interactive display control system through a coaxial cable.
Preferably, the workpiece rotating mechanism comprises a precision rotating main shaft and a connecting flange shaft, and the connecting flange shaft is arranged above the precision rotating main shaft.
Preferably, quick-mounting card mechanism includes centering dop, lock nut and lens benchmark axle, the centering dop dress is in the flange shaft, lens benchmark axle is adorned in the centering dop, and pass through lock nut fixes the chucking.
Preferably, the internal focusing auto-collimation centering device comprises a centering device base body, a light source, a camera and a micro-shaping objective lens, wherein the light source and the micro-shaping objective lens are superposed with the central axis of the centering device base body and respectively located at the upper end and the lower end of the centering device base body, and the central axis of the camera is perpendicular to and intersected with the central axis of the centering device base body.
Preferably, the centering instrument base comprises a main body, a sliding table, a guide rail pair, a lead screw and a hand wheel.
Preferably, the quick adjustment mechanism comprises a base plate, a precision lifting table, a quick sliding table, a micrometer head and a mandril.
Preferably, the ejector rod is used for correcting the eccentricity of the lens, an arc notch is formed in the contact end of the ejector rod and the lens, and the radius of the arc is slightly larger than that of the lens to be corrected.
Preferably, the interactive display control system comprises an embedded industrial control computer, an auxiliary support thereof, a cable, a power supply and other hardware and control software.
The technical scheme adopted by the quick centering gluing method for the micro lens is as follows:
step 1, selecting a proper ejector rod and a proper lens reference shaft according to the diameter of a lens to be cemented, and respectively installing the ejector rod and the lens reference shaft into a quick adjusting mechanism and a quick clamping mechanism;
step 4, coating a proper amount of photosensitive hydrolysis glue between the first lens to be cemented and the lens reference shaft, and then placing the first lens to be cemented on the lens reference shaft;
and 7, repeating the steps 3-6, adhering the second lens to be glued to the first lens, and so on to finish gluing the plurality of lenses, wherein the lenses are adhered by using a photosensitive structural adhesive.
Compared with the prior art, the invention has the following beneficial effects:
1. the device and the method for quickly centering and gluing the micro lens solve the problem that the conventional centering instrument cannot be used for centering and gluing the micro lens, effectively improve the centering and gluing precision of the micro lens and ensure the imaging quality of a micro optical system.
2. According to the device and the method for quickly centering and gluing the micro lens, the quick adjusting mechanism is arranged aiming at the characteristics of the micro lens, so that the adjusting efficiency and the adjusting quality can be effectively improved, and the device and the method are suitable for being applied to a production field.
3. According to the device and the method for quickly centering and gluing the micro lens, the finished cemented lens is connected with the lens reference shaft, and the next process is to mount the reference shaft on the edge grinding machine to grind the excircle of the cemented lens group, so that the problem of excircle dislocation among the lenses is not needed to be considered during gluing, the requirement on the excircle of a single lens is not high, and the processing difficulty of the single lens is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a system for rapidly centering and gluing a micro lens according to the present invention;
FIG. 2 is a schematic structural diagram of a workpiece rotating mechanism according to the present invention;
FIG. 3 is a schematic structural view of a quick card-loading mechanism according to the present invention;
FIG. 4 is a schematic structural view of an internally focusing auto-collimation centering device of the present invention;
FIG. 5 is a schematic view of the base structure of the centering apparatus of the present invention;
FIG. 6 is a schematic view of the quick adjustment mechanism of the present invention;
FIG. 7 is a schematic diagram of a top rod structure of the quick adjustment mechanism of the present invention;
FIG. 8 is a schematic view of the position of the centralizer, the rotatable shaft and the adjustment mechanism of the present invention;
FIG. 9 is a schematic view of the present invention illustrating a centering gluing process;
FIG. 10 is a flow chart of a method for rapidly centering and gluing micro lenses according to the present invention.
Description of reference numerals: 1. a workpiece slewing mechanism; 2. a quick card installing mechanism; 3. an internal focusing auto-collimation centering instrument; 4. a centering instrument base; 5. a quick adjustment mechanism; 6. an interactive display control system; 7. a substrate; 8. a precision rotating main shaft; 9. connecting a flange shaft; 10. a centering chuck; 11. locking the nut; 12. a lens reference axis; 13. a centering instrument base; 14. a light source; 15. a camera; 16. a micro-shaping objective lens; 17. A main body; 18. a sliding table; 19. a guide rail pair; 20. a lead screw; 21. a hand wheel; 22. a base plate; 23. a precision lifting table; 24. a rapid sliding table; 25. micrometer head; 26. a top rod; 27. a lens.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The invention provides a micro lens rapid centering and gluing device and a method, which solve the problem that the conventional centering instrument cannot be used for centering and gluing a micro lens, effectively improve the centering and gluing precision of the micro lens, ensure the imaging quality of a micro optical system, and effectively improve the adjustment efficiency and the adjustment quality by arranging a rapid adjustment mechanism according to the characteristics of the micro lens.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and 8, the present invention provides a micro lens fast centering gluing device, which comprises a workpiece rotating mechanism 1, a fast chucking mechanism 2, an internal focusing auto-collimation centering device 3, a centering device base 4, a fast adjusting mechanism 5 and an interactive display control system 6; the rotating shaft of the workpiece rotating mechanism 1 is the standard of the centering gluing device of the invention and is positioned at the center of the substrate 7; the quick clamping mechanism 2 is arranged on the workpiece rotating mechanism 1, and the central axes of the quick clamping mechanism and the workpiece rotating mechanism are superposed; the centering instrument base 4 and the quick adjusting mechanism 5 are both arranged on the base plate 7 and are positioned around the workpiece rotating mechanism 1 and form an angle of 90 degrees with each other; the central axis of the mandril 26 on the quick adjusting mechanism 5 is vertical to and intersected with the rotation axis of the workpiece rotating mechanism 1; the internal focusing auto-collimation centering device 3 is positioned on the sliding table 18 of the centering device base 4 and is positioned right above the workpiece rotating mechanism 1, and meanwhile, the central axis of the internal focusing auto-collimation centering device 3 is superposed with the rotating axis of the workpiece rotating mechanism 1; the camera 15 on the internally focused auto-collimation centralizer 3 is connected with the interactive display control system 6 through a coaxial cable.
As shown in fig. 2, the work turning mechanism 1 includes a precision turning main shaft 8 and a connecting flange shaft 9, and the connecting flange shaft 9 is mounted above the precision turning main shaft 8.
As shown in fig. 3, the quick clamping mechanism 2 includes a centering chuck 10, a lock nut 11, and a lens reference shaft 12, the centering chuck 10 is installed in the connecting flange shaft 9, and the lens reference shaft 12 is installed in the centering chuck 10 and is fixed and clamped by the lock nut 11.
As shown in fig. 4, the internally focusing autocollimation centering device 3 includes a centering device base 13, a light source 14, a camera 15 and a micro-shaping objective lens 16, wherein the light source 14 and the micro-shaping objective lens 16 are overlapped with the central axis of the centering device base 13 and respectively located at the upper end and the lower end of the centering device base 13, and the central axis of the camera 15 is perpendicular to and intersects with the central axis of the centering device base 13.
As shown in fig. 5, the centering apparatus base 4 includes a main body 17, a slide table 18, a guide rail pair 19, a screw 20, and a hand wheel 21.
As shown in fig. 6, the quick adjustment mechanism 5 includes a backing plate 22, a precision lift table 23, a quick slide table 24, a micrometer head 25, and a jack 26.
As shown in fig. 7, an arc notch is formed at the contact end of the push rod 26 and the lens 27, and the radius of the arc is slightly larger than the radius of the lens 27 to be corrected.
The interactive display control system 6 includes an embedded industrial control computer and its accessory support, hardware such as cable and power supply, and control software (not shown).
As shown in fig. 9 and 10, the present invention further provides a method for rapidly centering and gluing a microlens, which is further described in detail with reference to the working process of the present invention:
step 1, selecting a proper mandril 26 and a proper lens reference shaft 12 according to the diameter of a lens 27 to be glued, and respectively installing the mandril 26 and the lens reference shaft 12 into a quick adjusting mechanism 5 and a quick card installing mechanism 2;
step 4, coating a proper amount of photosensitive hydrolysis glue between the first lens 27 to be cemented and the lens reference shaft 12, and then placing the first lens 27 to be cemented on the lens reference shaft 12;
and 7, repeating the steps 3-6, adhering the second lens to be glued to the first lens, and so on to finish gluing the plurality of lenses, wherein the lenses are adhered by using a photosensitive structural adhesive.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. A micro lens rapid centering gluing device is characterized by comprising a workpiece rotating mechanism, a rapid clamping mechanism, an internal focusing and auto-collimation centering instrument, a centering instrument base, a rapid adjusting mechanism and an interactive display control system; the rotating shaft of the workpiece rotating mechanism is the standard of the centering gluing device and is positioned in the center of the substrate; the quick clamping mechanism is arranged on the workpiece rotating mechanism, and the central axes of the quick clamping mechanism and the workpiece rotating mechanism are superposed; the centering instrument base and the quick adjusting mechanism are both arranged on the base plate, are positioned around the workpiece rotating mechanism and form an angle of 90 degrees with each other; the central axis of the ejector rod on the rapid adjusting mechanism is vertical to and intersected with the rotation axis of the workpiece rotating mechanism; the internal focusing and auto-collimation centering device is positioned on the sliding table of the centering device base and right above the workpiece rotating mechanism, and meanwhile, the central axis of the internal focusing and auto-collimation centering device is superposed with the rotating axis of the workpiece rotating mechanism; and a camera on the internal focusing auto-collimation centering instrument is connected with the interactive display control system through a coaxial cable.
2. A micro-lens rapid-centering gluing device as claimed in claim 1, wherein said work piece rotating mechanism comprises a precision rotating main shaft and a connecting flange shaft, said connecting flange shaft being mounted above said precision rotating main shaft.
3. A micro-lens quick-centering gluing device as claimed in claim 1, wherein said quick-mounting means comprises a centering chuck, a lock nut and a lens reference shaft, said centering chuck is mounted in said coupling flange shaft, said lens reference shaft is mounted in said centering chuck and fixed and clamped by said lock nut.
4. The device as claimed in claim 1, wherein the inner focusing auto-collimation centralizer comprises a centralizer basal body, a light source, a camera and a micro-shaping objective lens, the light source and the micro-shaping objective lens are coincident with the central axis of the centralizer basal body and respectively located at the upper end and the lower end of the centralizer basal body, and the central axis of the camera is perpendicular to and intersects with the central axis of the centralizer basal body.
5. The device as claimed in claim 1, wherein the centering instrument base comprises a main body, a sliding table, a guide rail pair, a lead screw, and a hand wheel.
6. The device as claimed in claim 1, wherein the fast adjusting mechanism comprises a base plate, a precision lifting table, a fast sliding table, a micrometer head and a mandrel.
7. A micro-lens rapid centering gluing device as claimed in claim 6, wherein the ejector pin is used for correcting eccentricity of the lens, and an arc opening is opened at a contact end with the lens, and a radius of the arc is slightly larger than a radius of the lens to be corrected.
8. A micro-lens fast centering gluing device as claimed in claim 1, wherein said interactive display control system comprises hardware and control software such as embedded industrial computer and its auxiliary support, cable, power supply, etc.
9. The centering and gluing method of a micro-lens rapid centering and gluing device as claimed in claim 1, comprising the steps of:
step 1, selecting a proper ejector rod and a proper lens reference shaft according to the diameter of a lens to be cemented, and respectively installing the ejector rod and the lens reference shaft into a quick adjusting mechanism and a quick clamping mechanism;
step 2, turning on a power supply, and switching on a light source and a camera on the internal focusing auto-collimation centering instrument and an interactive display control system;
step 3, placing the first lens to be cemented on a lens reference shaft, and adjusting the position of a micro-shaping objective lens or a sliding table on a base until a clear spherical center reflection image of a light source is observed through an interactive display control system;
step 4, coating a proper amount of photosensitive hydrolysis glue between the first lens to be cemented and the lens reference shaft, and then placing the first lens to be cemented on the lens reference shaft;
step 5, rotating the precision rotation main shaft, observing the change condition of the spherical center reflection image of the light source through the interactive display control system, and adjusting the position of the lens through a mandril of the quick adjusting mechanism until the spherical center reflection image of the light source does not rotate along with the rotation of the precision rotation main shaft or rotates within a certain tolerance range, thereby completing the centering of the lens;
step 6, irradiating the lens by using a UV lamp to enable the photosensitive hydrolyzed glue to be cured and firmly adhered to the lens;
and 7, repeating the steps 3-6, adhering the second lens to be glued to the first lens, and so on to finish gluing the plurality of lenses, wherein the lenses are adhered by using a photosensitive structural adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911414343.1A CN111077627A (en) | 2019-12-27 | 2019-12-27 | Rapid centering gluing device and method for micro lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911414343.1A CN111077627A (en) | 2019-12-27 | 2019-12-27 | Rapid centering gluing device and method for micro lens |
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| CN201911414343.1A Pending CN111077627A (en) | 2019-12-27 | 2019-12-27 | Rapid centering gluing device and method for micro lens |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111438564A (en) * | 2020-05-12 | 2020-07-24 | 焦作天裕精密光学有限公司 | Device and method for positioning and processing optical axis of special-shaped optical element |
| CN112285942A (en) * | 2020-10-29 | 2021-01-29 | 中国航空工业集团公司洛阳电光设备研究所 | Centering device for gluing combined lens and method for forming glued lens |
| CN112327446A (en) * | 2020-12-03 | 2021-02-05 | 吉林省杨天光电有限公司 | Automatic gluing and centering device and method for optical lens |
| CN112683202A (en) * | 2021-03-12 | 2021-04-20 | 西安索唯光电技术有限公司 | Secondary centering device and secondary centering method for detector |
| CN113448041A (en) * | 2021-06-15 | 2021-09-28 | 中国科学院西安光学精密机械研究所 | High-precision adjustment method for concentricity of lens group |
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