CN104597580B - Gluing method of planar optical element - Google Patents

Abstract

The invention discloses a gluing method of a planar optical element. The gluing method includes the following steps: installing the planar optical element in a hollow positioning groove and positioning the planar optical element; fixing a connector in an adjustment clamp; erecting an optical monitoring system; dismounting the connector for surface treatment and gluing; adjusting the posture of the connector by aid of the adjustment clamp, and observing the whole process through the optical monitoring system to achieve accurate adjustment of the relative position relation of the planar optical element and the gluing connector as well as accurate control on gluing thickness and evenness. Multi-point gluing completed through the gluing method is even in stress, high in thickness consistency and even in gluing layer, the additional surface shape of the planar optical element does not exceed 100nm, and influence on performance of the planar optical element is tiny. The gluing method achieves continuous control on viscous fluid glue thickness and is simple to operate.

Description

Plane class optical element gluing method

Technical field

The invention belongs to optical element consolidation techniques field is and in particular to a kind of gluing method of plane class optical element.

Background technology

Compare the conventional coupling arrangement such as conventional screw, rivet, welding, cementing connection has that structure is simple, space utilization Rate is high, intensity is high, stress uniformly, stable performance, lifting connector entirety natural frequency and the advantages of endurance.Therefore to plane For class optical element such as plane mirror, lens, grating etc., cementing is a kind of the most frequently used connection supporting way, it is possible to increase empty Between utilization rate, strengthening reduces the harmful effect that assembling brings to the control of additional facet shape it is ensured that optical element stable optical performance Degree.When optical element is cementing with metal connecting piece, generally adopt or Mulit-point Connection at 3 points, to reduce stress concentration and lifting unit Part stability, this connected mode requires to the parameter precise control such as positioning, bondline thickness, the depth of parallelism, thickness evenness, glue simultaneously Water belongs to viscoelastic material, and operational use time is limited, for plane class optical element multiple spot adhering process, need to solve efficiency and Performance two large problems.

In adhering process, bondline thickness precise control is key point, because bondline thickness is to adhesion strength and cementing point Between stress concordance have significant impact.Glue belongs to the fluid with certain viscosity before curing, in bonding, is difficult to straight Connect precise control bondline thickness, the mode being typically employed in shimming or tiny glass ball between cementing connector controls thickness, The connector bondline thickness of this method preparation is difficult to realize continuous control and precision is inadequate, affects cementing place intensity.Particularly Complete multiple spot cementing in limited operating time, be difficult to the method and operability is not strong.Therefore accurately, be rapidly completed flat Face optical element multiple spot is cementing just very necessary.

Content of the invention

In view of this, the present invention be directed to current plane class optical element and metalwork cementing when the parameter such as positioning, thickness hardly possible A kind of deficiency with precise control, there is provided plane class optical element gluing method, can complete 3 points of plane class optical element or Multiple spot is cementing, and accurately adjusts the cementing parameter such as cementing position, bondline thickness.

Its technical scheme is as follows:

A kind of plane class optical element gluing method, for connector is glued to planar optical elements, its comprise with Lower step:

Step 1, positions planar optical elements, described planar optical elements is installed to the hollow out locating slot on location-plate Interior, described hollow out locating slot is square groove-like structure, has bottom surface and the side wall perpendicular to this bottom surface of level, sets any two Orthogonal side walls are locating surface, with locating surface intersection point as zero-bit, portray graduation mark in long cross direction respectively；

Step 2, fixedly connected part, on fixing described connector to adjustment fixture, this adjustment fixture has with respect to location-plate There are translation, the angle adjustment degree of freedom of level and vertical direction, described adjustment fixture is portrayed and the graduation mark on location-plate Parallel cross-shaped fixtures groove, adjusts pose, makes connector tentatively vertical with planar optical elements；

Step 3, sets up Optical Surveillance System, and described Optical Surveillance System includes optical lens and charge coupled cell, adjusts Whole described optical lens, make the cement plane of connector and planar optical elements blur-free imaging in charge coupled cell, preserve figure Picture, records connector current location；

Step 4, connector surface treatment, gluing, take off described connector, are surface-treated, apply in its cement plane afterwards Glue, then be re-installed in adjustment fixture；

Step 5, with the graduation mark on location-plate and fixture groove as reference, mobile adjustment fixture, so that connector is reached pre- Positioning is put, and adjusts upper and lower displacement and the angle of connector using adjustment fixture；

Step 6, monitor in real time, by multiplying power relation and the charge coupled cell Pixel size equivalent of Optical Surveillance System, Calculate when the spacing between front connector and planar optical elements, reach the purpose of precise control bondline thickness；

Step 8, cementing complete, after glue curing, loosening adjustment fixture makes it depart from connector, you can overall take out The planar optical elements having bonded, complete cementing.

Using above method, by adjusting fixture adjustment, Optical Surveillance System observes connector pose, has reached accurate tune The purpose of the cementing parameters such as whole cementing position, bondline thickness.

Column that described adjustment fixture includes being vertically supported on location-plate, can slide up and down to and be arranged on this column Vertical shift mechanism, 2-d rotating platform and be arranged on fialar micrometer above described vertical shift mechanism, wherein, described spiral shell Rotation micrometer is fixed on column by support, controls the upper and lower displacement of vertical shift mechanism, described vertical shift mechanism with accurate There is horizontally extending horizontal guide rail, this horizontal guide rail is located at the surface of location-plate, described 2-d rotating platform can be slided It is arranged on horizontal guide rail dynamicly.Using above structure, fialar micrometer adjustment vertical shift mechanism upper-lower position, make connector Upper and lower displacement Adjustment precision can reach 0.01mm, 2-d rotating platform is slidably mounted on horizontal guide rail and facilitates connector Lateral attitude adjust.

Described 2-d rotating platform include kink in the guide pad on horizontal guide rail, be arranged on above described guide pad, and with Adjustment block and the fixed block being arranged on this adjustment block side that this guide pad connects, wherein, described guide pad and horizontal guide rail Microgap coordinates, and described fixed block is provided with the through hole for installation connecting element, is provided with for clamping even above this through hole The positioning sleeve of fitting, described fixture groove is portrayed on the upper surface of this positioning sleeve.Using above structure, connector is in fixed block Fixture groove upper easy for installation, on positioning sleeve, can facilitate the positioning of connector and planar optical elements.

Described adjustment block is divided into the upper flat plate just to setting and lower flat board up and down, is rectangular block shape structure, wherein, upper flat Plate is fixedly connected with fixed block, and lower flat board is fixedly connected with guide pad, between two flat boards arrange locating core ball, this locating core ball with Local inline mode constitutes typed ball bearing pair with upper and lower flat board, is provided with least 2 extension springs, institute between described upper flat plate and lower flat board State extension spring upper end to be connected with upper flat plate, lower end is connected with lower flat board, is in extended state under normality, to keep upper and lower flat board position Appearance is constant, is respectively arranged with the first adjusting screw and the second adjusting screw at the two ends of upper flat plate upper end face diagonal line, adjusts Whole screw pitch is 0.20mm, and described first adjusting screw and the second adjusting screw are passed down through upper flat plate, lower end and lower flat board Upper surface abuts, and wherein, described first adjusting screw is near fixed block side.Using above structure, being capable of relatively reasonable ground reality The now accurate adjustment to connector two dimension angular.

Described extension spring upper and lower ends are fixed in the upper and lower flat board of adjustment block by pull bar, and this extension spring is 4 altogether, divide two groups, Omnidirectional distribution, and respectively close to adjusting screw position, this structure makes 2-d rotating platform stability more preferably, is easy to precise control and connects Part pose.

Be provided with lock-screw outside described vertical shift mechanism, this lock-screw pass through vertical shift mechanism end with Column abuts, and this structure relatively simple can be reliably achieved the positioning to vertical shift mechanism.

The minimum scale value of the graduation mark on described location-plate is 0.5mm, the focal length of described Optical Surveillance System be more than or Equal to 20mm, the enlargement ratio being equal at 20mm in focal length is 10 times, and the Pixel size of described charge coupled cell is 5 microns. This configuration ensure that the imaging definition of Optical Surveillance System it is ensured that in bonding process, the precision controlling of each cementing parameter.

Surface treatment described in step 4 is carried out successively according to following steps:

The first step, ultrasound wave cleans 10 minutes, goes to degrease and solid particulate matter；

Second step, the hydrofluoric acid dips cement plane with 5%, after 5 minutes, is cleaned with distilled water, dries.

This surface treatment method can remove the impurity such as the oxide of cement plane, makes glue be easier to condense in cement plane, Facilitate the cementing of connector and planar optical elements.

Described adjustment fixture be 3 sets, and triangular in shape be distributed on location-plate upper surface, this configuration avoids each adjustment press from both sides Interfere between tool, for multiple spot, cementing especially 3 points cementation methods, improve cementing efficiency.

Beneficial effect: using above technical scheme plane class optical element gluing method it is achieved that planar optical elements Relative position relation fine setting, bondline thickness and uniformity are accurate and between cementing connector controls, complete by the inventive method The cementing stress of multiple spot becoming is uniform, consistency of thickness is high, glue-line is uniform, and optical element additional facet shape is less than 100nm, to optics Element function impact is minimum.

Brief description

Fig. 1 is the flow chart of the present invention；

Fig. 2 is the perspective view of adjusting device in the present invention；

Fig. 3 is the structural representation that in the present invention, adjustment fixture is installed with location-plate；

Fig. 4 is the structural representation of adjustment block in the present invention；

Fig. 5 is the top view of Fig. 4.

Specific embodiment

With reference to embodiment and accompanying drawing, the invention will be further described.

A kind of plane class optical element gluing method, sets up adjusting device as shown in Figure 2, it includes location-plate 3 first, It is provided with hollow out locating slot 31, this hollow out locating slot 31 shape can be according to treating cementing planar optical elements 2 on this location-plate 3 Shape sets, and keeps its bottom surface level, facilitates holding plane optical element 2, side wall and plane perpendicular, with length and width direction Side wall be locating surface, with locating surface focus as zero-bit, portray graduation mark in length and width direction respectively, minimum scale value is 0.5mm, this graduation mark should be guaranteed that operator is convenient and observes, and can be arranged on the end face of hollow out locating slot 31 outside location-plate 3 On, the adjustment fixture 4 of 3 sets of distributions triangular in shape is provided with the location-plate in hollow out locating slot 31 outside, outside location-plate 3 Optical Surveillance System 5, including optical lens 51 and charge coupled cell 52, the focal length f of this Optical Surveillance System 5 are installed: >= 20mm, enlargement ratio is about 10 times (at f=20mm), and Pixel size is 5 microns.

As shown in figure 3, described adjustment fixture 4 includes the column 6 being vertically situated on location-plate 3, can slide up and down to Vertical shift mechanism 7,2-d rotating platform 8 and the spiral being arranged on described vertical shift mechanism 7 top being arranged on this column 6 Micrometer 9, wherein, described column 6 is cylinder, and described fialar micrometer 9 is fixed on column 6 by support 10, to control Vertical shift mechanism 7 upper and lower displacement, is provided with lock-screw 11 outside described vertical shift mechanism 7, for locking on column 6 Positioning, this vertical shift mechanism 7 has horizontally extending horizontal guide rail 71, this horizontal guide rail 71 parallel with location-plate 3 Extend to hollow out locating slot 31 side, described 2-d rotating platform 8 is slidably mounted on horizontal guide rail 71.

As seen from Figure 2, described 2-d rotating platform 8, including guide pad 81, adjustment block 82 and fixed block 83, is square Shape square structure, wherein, guide pad 8 is enclosed within horizontal guide rail 71, using microgap cooperation so as to can be along horizontal guide rail 71 Move horizontally, adjustment block 82 is bolted with fixed block 83, this fixed block 83 is provided with logical for installation connecting element 1 Hole, is provided with positioning sleeve 84 in the upper surface of described through hole, and during use, this positioning sleeve 84 and connector 1 are interference fits, convenient Install, and be unlikely to come off, the upper surface of positioning sleeve 84 is portrayed fixture groove cruciferous, this fixture groove and location-plate Graduation mark on 3 is parallel.

In conjunction with Fig. 4 and Fig. 5, described adjustment block 82 is divided into the upper flat plate 82a being oppositely arranged up and down and lower flat board 82b, upper flat Plate 82a is fixedly connected by screw with fixed block 84, and lower flat board 82b is equally adopted with guide pad 81 and is screwed, upper flat plate 82a Connected by 4 extension springs 86 and lower flat board 82b between, as shown in Figure 5, extension spring 86 is divided into two groups of omnidirectional distribution, in every group 2 extension spring 86 Parallel Symmetrics arrangement, be provided with spherical locating core ball 85 between upper flat plate 82a and lower flat board 82b, upper On flat board 82a and lower flat board 82b opposing end surface, relative set caves inward portion to accommodate locating core ball 85, and this locating core ball 85 can It is rotatably mounted in described depressed part, to form typed ball bearing pair, adjust freedom degree rotating center as two dimension angular.Upper flat plate It is respectively provided with pull bar 89 on 82a and lower flat board 82b can take various forms to fix extension spring 86 two ends, pull bar 89, such as in figure Setting groove, pull bar 89 is placed in groove, is defined by the concordance not affecting upper and lower planar surface.In upper flat plate 82a upper end It is respectively provided with the first adjusting screw 87 and the second adjusting screw 88 near end positions, pitch is 0.20mm on face diagonal, the , near fixed block 83 side, this first adjusting screw 87 and the second adjusting screw 88 are along upper flat plate 82a upper end for one adjusting screw 87 Face down through upper flat plate 82a, lower end is abutted with lower flat board 82b upper surface, it stretches out the part of upper flat plate 82a upper end is adjustment Portion, is arranged corresponding screwed hole on upper flat plate 82a, is acted on by extension spring 86, increases thrust, realizes angle positioning and improves angle Degree stability.

Rotate two adjusting screws respectively, upper flat plate 82a angle deflects, and then drive fixed block 83 to deflect, complete Fixed block 83 beat and luffing angle are adjusted, and then realize the depth of parallelism to metal tie rods lower end mucilage glue surface opposite planar element Accurately adjust.

As Fig. 1, the gluing method of the present invention comprises the following steps and carries out:

Step 1, planar optical elements 2 is installed in hollow out locating slot 31, and positions fastening；

Step 2, connector 1 is installed on fixed block 83, is fastened using positioning sleeve 84, adjustment connector 1 pose so as to Preliminary planar optical elements 2 are vertical；

Step 3, adjusts optical lens 51, and the cement plane making connector 1 and planar optical elements 2 is in charge coupled cell 52 Interior blur-free imaging, preserves image, records connector 1 current location；

Step 4, takes off connector 1, and this connector 1 is surface-treated, and afterwards in its cement plane gluing, gluing volume is big In cementing volume, described surface treatment includes:

A, ultrasound wave clean 10 minutes, go to degrease and solid particulate matter；

B, the hydrofluoric acid dips cement plane with 5%, after 5 minutes, are cleaned with distilled water, dry.

Step 5, is reinstalled connector 1 in fixed block 83, is fastened by positioning sleeve 84, with the scale on location-plate 3 Line and positioning sleeve 84 fixture groove are reference, and mobile link part 1 arrives precalculated position, is accurately adjusted vertically by fialar micrometer 9 Travel mechanism 7 upper and lower displacement, rotation the first adjusting screw 87 and the second adjusting screw 88, to adjust connector 1 angle；

Step 6, by multiplying power relation and the charge coupled cell 52 Pixel size equivalent of Optical Surveillance System 5, calculates and works as Spacing between front connector 1 and planar optical elements 2, and adjust connector pose by adjusting fixture 4, progressive alternate, to reach Purpose to precise control bondline thickness；

Step 7, after glue curing, loosens adjustment fixture 4 so as to depart from connector 1, bonding the putting down of overall taking-up Face optical element 2, completes cementing.

When needing multiple spot cementing, the straight travel mechanism of rotating vertical 7, continues above step.

It should be noted that above example is only in order to illustrate technical solution of the present invention rather than restriction technologies scheme, although Applicant is explained in detail to the present invention with reference to preferred embodiment, it will be understood by those within the art that, those are right Modification or equivalent that technical solution of the present invention is carried out, it is impossible to depart from objective and the scope of the technical program, all should cover In the middle of scope of the invention as claimed.

Claims (9)

1. a kind of plane class optical element gluing method is it is characterised in that comprise the steps of

Step 1, positioning planar optical elements (2), the hollow out described planar optical elements (2) being installed on location-plate (3) is fixed In position groove (31), described hollow out locating slot (31) is square groove-like structure, has bottom surface and the side perpendicular to this bottom surface of level Wall, sets any two orthogonal side walls as locating surface, with locating surface intersection point as zero-bit, portrays graduation mark in long cross direction respectively；

Step 2, fixedly connected part (1), described connector (1) is fixed in adjustment fixture (4), this adjustment fixture (4) is relatively There is translation, the angle adjustment degree of freedom of level and vertical direction in location-plate (3), described adjustment fixture (4) has been portrayed with The parallel cross-shaped fixtures groove of graduation mark on location-plate (3), adjusts pose, makes connector (1) and planar optical elements (2) tentatively vertical；

Step 3, sets up Optical Surveillance System (5), and described Optical Surveillance System (5) includes optical lens (51) and Charged Couple unit Part (52), adjusts described optical lens (51), makes connector (1) first in Charged Couple with the cement plane of planar optical elements (2) The interior blur-free imaging of part (52), preserves image, records connector (1) current location；

Step 4, connector (1) surface treatment, gluing, described connector (1) is taken off, is surface-treated, cementing at it afterwards Face gluing, then be re-installed in adjustment fixture (4)；

Step 5, connector (1) located lateral and pose adjustment, with the graduation mark on location-plate (3) and fixture groove as reference, Mobile adjustment fixture (4), is made connector (1) reach precalculated position, is adjusted the upper bottom of connector (1) using adjustment fixture (4) Move and angle；

Step 6, monitor in real time, worked as by the multiplying power relation and charge coupled cell (52) Pixel size of Optical Surveillance System (5) Amount, calculates when the spacing between front connector (1) and planar optical elements (2), reaches the purpose of precise control bondline thickness；

Step 7, completes cementing, and after glue curing, loosening adjustment fixture (4) makes it depart from connector (1), you can entirety takes Go out the planar optical elements (2) having bonded, complete cementing.

2. plane class optical element gluing method according to claim 1 it is characterised in that: described adjustment fixture (4) bag Include the column (6) being vertically supported on location-plate (3), the vertical shift machine being arranged on this column (6) can be slided up and down to Structure (7), 2-d rotating platform (8) and be arranged on fialar micrometer (9) above described vertical shift mechanism (7), wherein, described spiral shell Rotation micrometer (9) is fixed on column (6) by support (10), with accurate control vertical shift mechanism (7) upper and lower displacement, described Vertical shift mechanism (7) has horizontally extending horizontal guide rail (71), and this horizontal guide rail (71) is located at location-plate (3) Surface, described 2-d rotating platform (8) is slidably mounted on horizontal guide rail (71).

3. plane class optical element gluing method according to claim 2 it is characterised in that: described 2-d rotating platform (8) Including kink in the guide pad (81) on horizontal guide rail (71), be arranged on above described guide pad (81), and with this guide pad (81) adjustment block (82) connecting and the fixed block (83) being arranged on this adjustment block (82) side, wherein, described guide pad (81) coordinate with horizontal guide rail (71) microgap, described fixed block (83) is provided with the through hole for installation connecting element (1), should It is provided with the positioning sleeve (84) for clamp connection (1), described fixture groove is portrayed in this positioning sleeve (84) above through hole On upper surface.

4. plane class optical element gluing method according to claim 3 it is characterised in that: described adjustment block (82) is divided into Upper flat plate (82a) just to setting and lower flat board (82b) up and down, wherein, upper flat plate (82a) is fixedly connected with fixed block (83), Lower flat board (82b) is fixedly connected with guide pad (81), setting locating core ball (85) between two flat boards, and this locating core ball (85) is with office Portion's inline mode constitutes typed ball bearing pair with upper and lower flat board, is provided with least 2 between described upper flat plate (82a) and lower flat board (82b) Extension spring (86), described extension spring (86) upper end is connected with upper flat plate (82a), and lower end is connected with lower flat board (82b), is in and draws under normality Stretch state, to keep upper and lower flat board pose constant, be respectively arranged with the two ends of upper flat plate (82a) upper end face diagonal line First adjusting screw (87) and the second adjusting screw (88), described first adjusting screw (87) and the second adjusting screw (88) are downwards Through upper flat plate (82a), lower end is abutted with lower flat board (82b) upper surface, and wherein, described first adjusting screw (87) is near fixing Block (83) side.

5. plane class optical element gluing method according to claim 4 it is characterised in that: described extension spring (86) upper and lower two End is fixed in the upper and lower flat board of adjustment block (82) by pull bar (89), and this extension spring (86) is 4 altogether, divides two groups, omnidirectional distribution, and Respectively close to adjusting screw (87,88) position.

6. plane class optical element gluing method according to claim 4 it is characterised in that: described vertical shift mechanism (7) it is provided with lock-screw (11) outside, this lock-screw (11) passes through the end of vertical shift mechanism (7) to support with column (6) Connect.

7. plane class optical element gluing method as claimed in any of claims 1 to 6 it is characterised in that: described The minimum scale value of the graduation mark on location-plate (3) is 0.5mm, and the focal length of described Optical Surveillance System (5) is more than or equal to 20mm, the enlargement ratio being equal at 20mm in focal length is 10 times, and the Pixel size of described charge coupled cell (52) is 5 microns.

8. plane class optical element gluing method as claimed in any of claims 1 to 6 it is characterised in that: step 4 Described in surface treatment carry out successively according to following steps:

The first step, ultrasound wave cleans 10 minutes, goes to degrease and solid particulate matter；

Second step, the hydrofluoric acid dips cement plane with 5%, after 5 minutes, is cleaned with distilled water, dries.

9. plane class optical element gluing method as claimed in any of claims 1 to 6 it is characterised in that: described Adjustment fixture (4) is 3 sets, and triangular in shape is distributed on location-plate (3) upper surface.