CN104597580A - 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, be specifically related 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 have that structure is simple, space availability ratio is high, intensity is high, stress equilibrium, stable performance, the overall advantage such as natural frequency and endurance of lifting web member.Therefore concerning plane class optical element as level crossing, lens, grating etc., cementing is that the most frequently used one connects supporting way, can improve space availability ratio, strengthen the control to additional facet shape, ensure optical element optical stable performance, reduce the harmful effect degree of assembling and bringing.Optical element and metal connecting piece cementing time, usual employing 3 or Mulit-point Connection, concentrate and lift elements stability to reduce stress, this connected mode requires accurately to control parameters such as location, bondline thickness, the depth of parallelism, thickness evenness, glue belongs to viscoelastic material simultaneously, operational use time is limited, for plane class optical element multiple spot adhering process, need solve efficiency and performance two large problems.

In adhering process, bondline thickness accurately controls to be key point, because bondline thickness has significant impact to stressed consistance between cohesive strength and cementing point.Glue belongs to the fluid with certain viscosity before curing, when bonding, be difficult to directly accurately control bondline thickness, the mode being typically employed in shimming or tiny glass ball between cementing web member controls thickness, web member bondline thickness prepared by this method is difficult to realize stepless control and precision is inadequate, affects cementing place intensity.In limited operating time, particularly complete multiple spot cementing, with the method be difficult to realize and operability is not strong.Therefore planar optical elements multiple spot is completed accurately, fast cementing just very necessary.

Summary of the invention

In view of this, the present invention is directed to current plane class optical element and metalwork cementing time locate, the difficult parameters such as thickness is with the deficiency accurately controlled, provide a kind of plane class optical element gluing method, plane class optical element 3 can be completed or multiple spot cementing, and cementing parameters such as the cementing position of accurate adjustment, bondline thickness.

Its technical scheme is as follows:

A kind of plane class optical element gluing method, for web member is glued to planar optical elements, it comprises following steps:

Step 1, plane of orientation optical element, described planar optical elements is installed in the hollow out locating slot on location-plate, described hollow out locating slot is square channel-shaped structure, there is the bottom surface of level and the sidewall perpendicular to this bottom surface, setting any pairwise orthogonal sidewall is locating surface, with locating surface intersection point for zero-bit, portrays scale mark respectively in length and width direction;

Step 2, fixed connecting piece, fixing described web member is to connecting on adjustment fixture, this adjustment fixture has translation, the angular setting degree of freedom of level and vertical direction relative to location-plate, described adjustment fixture is portrayed the cross-shaped fixtures groove paralleled with the scale mark on location-plate, adjustment pose, makes web member and planar optical elements tentatively vertical;

Step 3, erection Optical Surveillance System, described Optical Surveillance System comprises optical lens and charge coupled cell, adjust described optical lens, make the cement plane of web member and planar optical elements blur-free imaging in charge coupled cell, preserve image, record web member current location;

Step 4, web member surface treatment, gluing, take off described web member, do surface treatment, afterwards at its cement plane gluing, then is re-installed in adjustment fixture;

Step 5, with the scale mark on location-plate and fixture groove for reference, mobile adjustment fixture, makes web member arrive precalculated position, utilizes upper and lower displacement and the angle of adjustment fixture adjustment web member;

Step 6, monitors in real time, by multiplying power relation and the charge coupled cell Pixel size equivalent of Optical Surveillance System, calculates the spacing between current web member and planar optical elements, reaches the object accurately controlling bondline thickness;

Step 8, cementingly completes, and after glue curing, loosens adjustment fixture and its and web member are departed from, can the planar optical elements that bonded of entirety taking-up, completes cementing.

Adopt above method, by the adjustment of adjustment fixture, Optical Surveillance System observation web member pose, reach the object of the cementing parameters such as the cementing position of accurate adjustment, bondline thickness.

Described adjustment fixture comprises the column be supported on vertically on location-plate, can slide up and down to be arranged on vertical travel mechanism on this column, 2-d rotating platform and the screw-thread micrometer that is arranged on above described vertical travel mechanism, wherein, described screw-thread micrometer is fixed on column by support, with the upper and lower displacement of precise hard_drawn tuhes vertical travel mechanism, described vertical travel mechanism has the horizontal guide rail extended in the horizontal direction, this horizontal guide rail is positioned at directly over location-plate, and described 2-d rotating platform is slidably mounted on horizontal guide rail.Adopt above structure, screw-thread micrometer adjusts vertical travel mechanism upper-lower position, makes the upper and lower displacement Adjustment precision of web member reach 0.01mm, and 2-d rotating platform is slidably mounted in and horizontal guide rail facilitates the lateral attitude of web member regulate.

Described 2-d rotating platform comprises the orienting lug of kink on horizontal guide rail, is arranged on above described orienting lug, and the adjustment block be connected with this orienting lug and the fixed block being arranged on this adjustment block side, wherein, described orienting lug coordinates with horizontal guide rail microclearance, described fixed block is provided with the through hole for installation connecting element, be provided with the locating sleeve for clamp connection above this through hole, described fixture groove is portrayed on the upper surface of this locating sleeve.Adopt above structure, web member is easy for installation on fixed block, and the fixture groove on locating sleeve, can facilitate the location of web member and planar optical elements.

Described adjustment block is divided into up and down just to the upper flat plate arranged and lower flat board, be rectangular block shape structure, wherein, upper flat plate is fixedly connected with fixed block, lower flat board is fixedly connected with orienting lug, locating core ball is set between two flat boards, this locating core ball is with local inline mode and upper, lower flat board forms typed ball bearing pair, at least 2 extension springs are provided with between described upper flat plate and lower flat board, described extension spring upper end is connected with upper flat plate, lower end is connected with lower flat board, extended state is under normality, on keeping, lower dull and stereotyped pose is constant, the first adjustment screw and the second adjustment screw is respectively arranged with at the two ends of upper flat plate upper surface diagonal line line, adjustment screw pitch is 0.20mm, described first adjustment screw and the second adjustment screw are passed down through upper flat plate, lower end abuts with lower dull and stereotyped upper surface, wherein, described first adjustment screw is near fixed block side.Adopt above structure, comparatively reasonably can realize the accurate adjustment to web member two dimension angular.

The upper and lower two ends of described extension spring 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 near adjustment screw position, this structure makes 2-d rotating platform stability better, is convenient to accurate control linkage part pose.

Described vertical travel mechanism arranged outside has lock-screw, and this lock-screw abuts with column through the end of vertical travel mechanism, and this structure can the comparatively easy location reliably realized vertical travel mechanism.

The minimum scale value of the scale mark on described location-plate is 0.5mm, and the focal length of described Optical Surveillance System is more than or equal to 20mm, and the enlargement ratio equaling 20mm place at focal length is 10 times, and the Pixel size of described charge coupled cell is 5 microns.This configuration can ensure the imaging definition of Optical Surveillance System, guarantees 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, Ultrasonic Cleaning 10 minutes, wipe oil and solid particulate matter;

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

This surface treatment method can remove the impurity such as the oxide of cement plane, makes glue easier in cement plane condensation, facilitates the cementing of web member and planar optical elements.

Described adjustment fixture is 3 covers, and is triangular in shapely distributed on location-plate upper surface, this configuration avoids between each adjustment fixture and interferes, for cementing especially 3 cementation methods of multiple spot, improve cementing efficiency.

Beneficial effect: the plane class optical element gluing method adopting above technical scheme, to achieve between planar optical elements and cementing web member that relative position relation precision adjusts, bondline thickness and homogeneity precise hard_drawn tuhes, the cementing stress equilibrium of the multiple spot completed by the inventive method, consistency of thickness is high, glue-line is even, optical element additional facet shape is no more than 100nm, minimum on optical element performance impact.

Accompanying drawing explanation

Fig. 1 is process flow diagram of the present invention;

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

Fig. 3 adjusts the structural representation that fixture and location-plate install in the present invention;

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

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

Embodiment

Below in conjunction with embodiment and accompanying drawing, the invention will be further described.

A kind of plane class optical element gluing method, first adjustment equipment is as shown in Figure 2 set up, it comprises location-plate 3, this location-plate 3 is provided with hollow out locating slot 31, this hollow out locating slot 31 shape can according to treating cementing planar optical elements 2 shape setting, keep its bottom surface level, facilitate holding plane optical element 2, sidewall and plane perpendicular, with the sidewall of length and Width for locating surface, with locating surface focus for zero-bit, scale mark is portrayed respectively in length and Width, minimum scale value is 0.5mm, this scale mark should ensure that operator is convenient and observe, can be arranged on the end face of location-plate 3 outside hollow out locating slot 31, location-plate outside hollow out locating slot 31 is provided with the adjustment fixture 4 of 3 cover distribution triangular in shape, Optical Surveillance System 5 is installed outside location-plate 3, comprise optical lens 51 and charge coupled cell 52, the focal distance f of this Optical Surveillance System 5: >=20mm, enlargement ratio is about at 10 times (f=20mm places), Pixel size is 5 microns.

As shown in Figure 3, described adjustment fixture 4 comprises the column 6 be arranged on vertically on location-plate 3, can slide up and down to be arranged on the vertical travel mechanism 7 on this column 6, 2-d rotating platform 8 and the screw-thread micrometer 9 be arranged on above described vertical travel mechanism 7, wherein, described column 6 is right cylinder, described screw-thread micrometer 9 is fixed on column 6 by support 10, to control the upper and lower displacement of vertical travel mechanism 7, described vertical travel mechanism 7 arranged outside has lock-screw 11, for locking positioning on column 6, this vertical travel mechanism 7 has the horizontal guide rail 71 extended in the horizontal direction, this horizontal guide rail 71 is parallel to be extended to hollow out locating slot 31 side with location-plate 3, 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, comprise orienting lug 81, adjustment block 82 and fixed block 83, be rectangular block shape structure, wherein, orienting lug 8 is enclosed within horizontal guide rail 71, employing microclearance coordinates, can move horizontally along horizontal guide rail 71, adjustment block 82 and fixed block 83 are bolted, this fixed block 83 is provided with the through hole for installation connecting element 1, the upper surface of described through hole is provided with locating sleeve 84, during use, this locating sleeve 84 is transition fit with web member 1, convenient installation, and be unlikely to come off, the upper surface of locating sleeve 84 is portrayed fixture groove cruciferous, this fixture groove is parallel with the scale mark on location-plate 3.

Composition graphs 4 and Fig. 5, described adjustment block 82 is divided into the upper flat plate 82a and lower dull and stereotyped 82b that are oppositely arranged up and down, upper flat plate 82a is fixedly connected with by screw with fixed block 84, adopt same with orienting lug 81 of lower dull and stereotyped 82b is screwed, connected by 4 extension springs 86 between upper flat plate 82a and lower dull and stereotyped 82b, as shown in Figure 5, extension spring 86 is divided into two groups of omnidirectional distribution, 2 extension spring 86 Parallel Symmetrics often in group are arranged, spherical locating core ball 85 is provided with between upper flat plate 82a and lower dull and stereotyped 82b, on upper flat plate 82a and lower dull and stereotyped 82b opposing end surface, relative set caves inward portion to hold locating core ball 85, this locating core ball 85 is installed in rotation in described depressed part, to form typed ball bearing pair, as two dimension angular adjustment freedom degree rotating center.Upper flat plate 82a and lower dull and stereotyped 82b is arranged respectively pull bar 89 with fixing extension spring 86 two ends, pull bar 89 can adopt various ways, as arranged groove in figure, being placed in groove by pull bar 89, being as the criterion with the consistance not affecting upper and lower planar surface.Upper flat plate 82a upper surface diagonal line arranges the first adjustment screw 87 and the second adjustment screw 88 respectively near end positions, pitch is 0.20mm, first adjustment screw 87 is near fixed block 83 side, this the first adjustment screw 87 and the second adjustment screw 88 are passed down through upper flat plate 82a along upper flat plate 82a upper surface, lower end abuts with lower dull and stereotyped 82b upper surface, its part of stretching out upper flat plate 82a upper end is adjustment part, upper flat plate 82a arranges corresponding threaded hole, acted on by extension spring 86, increase snap-in force, realize angle orientation and improve angle stability.

Rotate two set screw respectively, upper flat plate 82a angle deflects, and then drives fixed block 83 to deflect, and completes fixed block 83 beat and luffing angle adjustment, and then realizes the depth of parallelism accurate adjustment to metal tie rods lower end mucilage glue surface opposite planar element.

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

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

Step 2, is installed to web member 1 on fixed block 83, utilizes locating sleeve 84 fastening, and adjustment web member 1 pose, makes its preliminary planar optical elements 2 vertical;

Step 3, adjustment optical lens 51, makes web member 1 and cement plane blur-free imaging in charge coupled cell 52 of planar optical elements 2, preserves image, record web member 1 current location;

Step 4, takes off web member 1, does surface treatment to this web member 1, and afterwards at its cement plane gluing, gluing volume is greater than cementing volume, and described surface treatment comprises:

A, Ultrasonic Cleaning 10 minutes, wipe oil and solid particulate matter;

B, hydrofluoric acid dips cement plane with 5%, after 5 minutes, with distilled water cleaning, are dried.

Step 5, reinstall web member 1 in fixed block 83, fastening by locating sleeve 84, with the scale mark on location-plate 3 and locating sleeve 84 fixture groove for reference, mobile link part 1 is to precalculated position, by the upper and lower displacement of screw-thread micrometer 9 accurate adjustment vertical travel mechanism 7, rotate the first adjustment screw 87 and the second adjustment screw 88, to adjust web member 1 angle;

Step 6, by multiplying power relation and the charge coupled cell 52 Pixel size equivalent of Optical Surveillance System 5, calculate the spacing between current web member 1 and planar optical elements 2, and adjust web member pose by adjustment fixture 4, progressive alternate, to reach the object accurately controlling bondline thickness;

Step 7, after glue curing, loosens adjustment fixture 4, itself and web member 1 is departed from, the planar optical elements 2 that overall taking-up is bonding, complete cementing.

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

It should be noted that, above embodiment is only in order to illustrate technical solution of the present invention but not restriction technologies scheme, although applicant is explained in detail the present invention with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those amendments that technical solution of the present invention is carried out or equivalently to replace, aim and the scope of the technical program can not be departed from, all should be encompassed in the middle of the claims in the present invention scope.

Claims (9)

1. a plane class optical element gluing method, is characterized in that, comprise following steps:

Step 1, plane of orientation optical element (2), described planar optical elements (2) is installed in the hollow out locating slot (31) on location-plate (3), described hollow out locating slot (31) is square channel-shaped structure, there is the bottom surface of level and the sidewall perpendicular to this bottom surface, setting any pairwise orthogonal sidewall is locating surface, with locating surface intersection point for zero-bit, portrays scale mark respectively in length and width direction;

Step 2, fixed connecting piece (1), described web member (1) company of being fixed to is adjusted on fixture (4), this adjustment fixture (4) has translation, the angular setting degree of freedom of level and vertical direction relative to location-plate (3), described adjustment fixture (4) is portrayed the cross-shaped fixtures groove paralleled with the scale mark on location-plate (3), adjustment pose, makes web member (1) tentatively vertical with planar optical elements (2);

Step 3, erection Optical Surveillance System (5), described Optical Surveillance System (5) comprises optical lens (51) and charge coupled cell (52), adjust described optical lens (51), make cement plane blur-free imaging in charge coupled cell (52) of web member (1) and planar optical elements (2), preserve image, record web member (1) current location;

Step 4, web member (1) surface treatment, gluing, take off described web member (1), do surface treatment, afterwards at its cement plane gluing, then is re-installed in adjustment fixture (4);

Step 5, web member (1) located lateral and pose adjustment, with the scale mark on location-plate (3) and fixture groove for reference, mobile adjustment fixture (4), make web member (1) arrive precalculated position, utilize upper and lower displacement and the angle of adjustment fixture (4) adjustment web member (1);

Step 6, real-time monitoring, by multiplying power relation and charge coupled cell (52) the Pixel size equivalent of Optical Surveillance System (5), calculate the spacing between current web member (1) and planar optical elements (2), reach the object accurately controlling bondline thickness;

Step 7, completes cementing, after glue curing, loosens adjustment fixture (4) and itself and web member (1) are departed from, and overallly can take out the planar optical elements (2) bonded, complete cementing.

2. plane class optical element gluing method according to claim 1, it is characterized in that: described adjustment fixture (4) comprises the column (6) be supported on vertically on location-plate (3), the vertical travel mechanism (7) be arranged on this column (6) can be slided up and down to, 2-d rotating platform (8) and the screw-thread micrometer (9) be arranged on above described vertical travel mechanism (7), wherein, described screw-thread micrometer (9) is fixed on column (6) by support (10), with the vertical travel mechanism of precise hard_drawn tuhes (7) upper and lower displacement, described vertical travel mechanism (7) has the horizontal guide rail (71) extended in the horizontal direction, this horizontal guide rail (71) is positioned at directly over location-plate (3), 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 characterized in that: described 2-d rotating platform (8) comprises the orienting lug (81) of kink on horizontal guide rail (71), be arranged on described orienting lug (81) top, and the adjustment block (82) be connected with this orienting lug (81), and be arranged on the fixed block (83) of this adjustment block (82) side, wherein, described orienting lug (81) coordinates with horizontal guide rail (71) microclearance, described fixed block (83) is provided with the through hole for installation connecting element (1), the locating sleeve (84) for clamp connection (1) is provided with above this through hole, described fixture groove is portrayed on the upper surface of this locating sleeve (84).

4. plane class optical element gluing method according to claim 3, it is characterized in that: described adjustment block (82) is divided into up and down just to the upper flat plate (82a) arranged and lower flat board (82b), wherein, upper flat plate (82a) is fixedly connected with fixed block (83), lower flat board (82b) is fixedly connected with orienting lug (81), locating core ball (85) is set between two flat boards, this locating core ball (85) is with local inline mode and upper, lower flat board forms typed ball bearing pair, at least 2 extension springs (86) are provided with between described upper flat plate (82a) and lower flat board (82b), described extension spring (86) upper end is connected with upper flat plate (82a), lower end is connected with lower flat board (82b), extended state is under normality, on keeping, lower dull and stereotyped pose is constant, the first adjustment screw (87) and the second adjustment screw (88) is respectively arranged with at the two ends of upper flat plate (82a) upper surface diagonal line line, described first adjustment screw (87) and the second adjustment screw (88) are passed down through upper flat plate (82a), lower end abuts with lower flat board (82b) upper surface, wherein, described first adjustment screw (87) is near fixed block (83) side.

5. plane class optical element gluing method according to claim 4, it is characterized in that: described extension spring (86) up and down two ends is fixed in the upper and lower flat board of adjustment block (82) by pull bar (89), this extension spring (86) is 4 altogether, divide two groups, omnidirectional distribution, and respectively near adjustment screw (87,88) position.

6. plane class optical element gluing method according to claim 4, it is characterized in that: described vertical travel mechanism (7) arranged outside has lock-screw (11), and this lock-screw (11) abuts with column (6) through the end of vertical travel mechanism (7).

7. plane class optical element gluing method as claimed in any of claims 1 to 6, it is characterized in that: the minimum scale value of the scale mark on described location-plate (3) is 0.5mm, the focal length of described Optical Surveillance System (5) is more than or equal to 20mm, the enlargement ratio equaling 20mm place at 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, is characterized in that: the surface treatment described in step 4 is carried out successively according to following steps:

The first step, Ultrasonic Cleaning 10 minutes, wipe oil and solid particulate matter;

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

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