KR101524541B1 - A Assembly Method of Reflective Optical System - Google Patents

Abstract

A method of assembling a reflective optical system according to the present invention comprises the steps of: a) assembling a main-diameter part having a central hole (optical aperture) to a base plate; b) assembling the truss structure to form a plurality of trusses connecting the base plate of the assembled circumferential portion and a circumferential base spaced a certain distance in the optical axis direction from the main axis; c) a spherical portion engaging step of engaging a minor diameter portion including a minor diameter to a minor diameter base of the truss structure; d) a sub-neck alignment step of optically aligning the sub-diameter coupled by the sub-diameter splicing step; And e) a sub-neck securing step to finally fix the optically aligned minor diameter.

Description

[0001] The present invention relates to a reflective optical system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling a reflective optical system, and more particularly to a method of assembling a reflective optical system and a method of assembling a reflective optical system.

The performance of the reflector generally requires surface precision of the reflector within a few tens of nanometers. Even if the reflector is highly precise, if the reflector is greatly deformed by an external force, such as gravity, depending on the method of supporting the reflector, May not achieve the desired performance. Therefore, the ultraprecision of the reflection part and the supporting method of the reflection device become the core technology of the reflection device.

For this reason, the method of supporting the reflector before super-precision machining and the method of supporting the reflector mounted on the telescope after machining must be determined at the time of designing the reflector.

Since the price of the reflector is very expensive, the complexity of the geometry increases exponentially. The shape of the reflecting device varies depending on the supporting method of the reflecting device. However, if the supporting method is complicatedly designed, the shape of the reflecting device becomes complicated, which results in an uneconomical reflecting device.

Therefore, it is required to provide an economical reflection device of the simplest shape as the superfine processing and the deformation of the reflection part are minimized when mounted on the telescope.

On the other hand, in order for the structure designed as the reflection device to exhibit the performance originally aimed at, it must be noted that the actual structure must be assembled as designed.

Nevertheless, the reality in assembling the reflective optical system includes the problem that there is no concept or manual for precise assembly or the method of assembling the jig is too complicated and difficult to mass-produce, so that the jig is not used.

The present invention is based on the fact that there is no concept of precise assembly to the extent that a jig is not used in assembling a conventional reflection optical system or that the jig assembling method is complicated and difficult and mass production is impossible, It is another object of the present invention to provide a method of assembling a reflecting optical body, which can mass-produce a reflecting optical system such as a telescope and the like while accurately assembling the same.

According to an aspect of the present invention, there is provided a method of assembling a reflective optical system, comprising the steps of: a) connecting a main mirror having a central hole to a base plate; b) assembling the truss structure to form a plurality of trusses connecting the base plate of the assembled circumferential portion and a circumferential base spaced a certain distance in the optical axis direction from the main axis; c) a spherical portion engaging step of engaging a minor diameter portion including a minor diameter to a minor diameter base of the truss structure; d) a sub-neck alignment step of optically aligning the sub-diameter coupled by the sub-diameter splicing step; And e) a sub-neck securing step to finally fix the optically aligned minor diameter.

In the step (a), the main mirror is connected to the base plate in a state where the height of the main mirror is adjusted to the height by using a main mirror centering jig.

The main mirror and the base plate are preferably connected to each other by a plurality of main mirror flexures configured to be positioned therebetween.

And an optical axis direction base plate jig configured to serve as a base of the base plate upon assembly of the main neck portion.

The step (b) may include: b1) coupling one end of the centering rod to the center hole of the main mirror; And b2) assembling the minor diameter base at the other end of the centering rod, and connecting the base plate and the minor diameter base by the plurality of trusses.

In the step (b1), it is preferable that the base plate on which the main mirror is assembled is turned upside down on a plurality of base plate support jigs.

And the plurality of base plate support jigs are preassembled with the base plate support jig base.

And a protector rod is used to insert the centering rod into the center hole of the base plate and to fasten the centering rod to prevent collision with the main groove at the time of fastening.

Preferably, (b2) is truss-connected to a plurality of truss bases, one end of the truss is coupled to the base plate, and the other end of the truss is coupled to the minor-diameter base.

And the centering rod and the protector rod are removed after the plurality of trusses are connected.

The sub-diameter portion in the step (c) includes a sub-diameter bead and a sub-diameter bezel configured to be coupled to the sub-diameter by the fastening means, and the sub-diameter and the sub-bezel are assembled on the sub-diameter support jig.

The step (c) is preferably performed on a plurality of fork jigs projecting from the optical table and configured to support the truss structure.

The minor diameter optical alignment in the step (d) is performed by an alignment fixture assembled to the minor diameter base.

And the alignment jig is assembled to a center aligner to include a center cross jig for translating the decenter of the contour portion.

Here, the center of gravity is adjusted through bolt adjustment, and the translational movement in the optical axis direction is adjusted by the forward / backward movement of the center cross jig in the optical axis direction.

The tilt during the optical alignment of the minor diameter part is controlled by rotating the bezel bonding disk with respect to the center ball by adjusting the screw so that the rotation about the x axis and the rotation about the y axis are adjusted.

The step (e) includes the steps of: e1) assembling the bezel and bezel bonding disc by a bond that has passed through the first bond inlet; e2) assembling the bezel bonding disc fixture and the bezel bonding disc by a bond that has passed through the second bond injection port and fixing to the minor-diameter base; And e3) curing the bond.

On the other hand, a reflective optical system according to the present invention for solving the above-described technical problem is characterized by being a reflective optical system assembled by the above-described method of assembling a reflective optical system.

According to another aspect of the present invention, there is provided a jig for assembling a reflection optical system, the jig for assembling a reflection optical system configured to be used in a method of assembling the reflection optical system.

As described above, in the conventional assembly of the reflection optical system, there is no concept of precise assembly so as not to use the jig, or considering the fact that the jig assembling method is complicated and difficult and mass production is impossible, According to the assembling method and the like, it is possible to mass-produce a reflective optical system such as a reflective telescope while assembling it precisely.

1 is a structural view for a main neck part assembly step,
FIG. 2 is a diagram showing a combined structure of a main mirror and a flexor according to an embodiment of the present invention,
FIGS. 3, 4 and 5 are diagrams for a truss structure assembling step,
FIG. 6 is a structural view for a sub-neck assembly step;
FIG. 7 is a configuration diagram for the entire assembly and sub-neck alignment step,
Figs. 8 and 9 are diagrams for the sub-neck alignment step,
Fig. 10 is a block diagram of the neck-neck fixing step, and Fig.
Fig. 11 is a view showing the assembly completed by the method of assembling the reflection optical system of the present invention and a photograph of a device actually assembled. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

The assembling method of the reflecting optical system according to the embodiment of the present invention mainly comprises a main neck part assembling step, a truss structure assembling step, a light part joining step, a sub-light part aligning step, and a light part fixing step.

Main neck  Assembly stage

First, as shown in Fig. 1, the main-diameter part assembling step is to connect the main mirror M1 having the center hole 300, through which light passes, to the base plate 11.

As shown in FIG. 2, the circumferential portion M1, which is a reflecting device, includes a reflector 100 located on an upper surface thereof, a flexure 400 located on a lower surface opposite to the upper surface, A plurality of coupling grooves 200 to be mounted, and a light tube 300 located in the middle portion and configured to pass light through the reflection device. In this embodiment, the upper surface is a curved surface and the lower surface is a flat surface. The light tube 300 formed as a hole in the center of the reflection device performs a light path function to transmit the light reflected from the diameter portion to the optical system (not shown) located below the lower surface of the reflection device.

The reflecting portion 100 of the main neck portion has a spherical surface or an aspherical surface because the upper surface is a curved surface and reflects the light applied from the outside to the spherical portion (sub-reflecting device) M2 located on the reflecting portion 100. At this time, the minor diameter part reflects the light incident from the reflection part 100 back to the light tube part 300 of the circumferential part.

A plurality of coupling grooves 200 formed on the lower surface of the reflection device is equipped with a flexor 400 configured to support the reflection device when a force is externally applied to the reflection device. In this embodiment, the number of the coupling grooves 200 is three, and the distance between the adjacent coupling grooves 200 is constant.

Specifically, the coupling groove 200 is formed on the side surface of the reflecting device, that is, between the lower surface and the upper surface toward the light tube 300, and also from the lower surface to the upper surface. At this time, the height of the coupling groove 200, that is, the height from the lower surface to the upper surface is smaller than the thickness of the reflection device, and the depth of the coupling groove 200 is smaller than the depth of the coupling groove 200 from the light tube 300, (That is, the side of the portion where the engaging groove 200 is not located). In order to attach the flexor 400 to the coupling groove 200 formed in the rectangular shape, the coupling groove 200 is formed by mounting the flexor 400 on the mounting surface of the inner surface of the coupling groove. And a bolt hole corresponding to the bolt 410. When the bolt 410 and the corresponding bolt hole for mounting the fastening groove 200 and the flexure 400 directly to each other are attached to each other, . In order to solve such a problem, as shown in FIG. 2B, a bolt hole is formed from the edge of the top surface inside the coupling groove 200 (that is, the side closest to the light tube 300 in the upper surface of the coupling groove 200) (Step 220) having a length equal to the length and having a predetermined height. The step 220 constituted in this way blocks the propagation path of the stress to the reflecting portion 100 and reduces deformation of the reflecting portion.

As an alternative to the above-described fastening grooves, the plurality of fastening grooves 200 are formed to have the same height, depth, and width as the fastening grooves 200 described above, but they also include a fastening block 210 therein (See FIG. 2C). The coupling block 210 has a thickness equal to or greater than the length C1 of the bolt hole 211 at the center of the inner surface formed in the coupling groove 200 and closest to the light tube 300, 200 having a width W2 that is smaller than the width W1 of the fastening groove 200. As shown in FIG. In addition, the fastening block 210 has a bolt hole 211 on the side closest to the side surface of the reflector to mount the flexor 400. The upper surface of the coupling block 210 is spaced apart from the upper surface of the coupling groove 200, that is, the inner surface of the coupling groove 200 closest to the reflective portion 100. The spaced apart structure is formed for the same effect as the step 220 described above, and the spaced apart length is formed to be substantially equal to the height H2 of the step 220. [

On the other hand, the reflection device of the above-described circumferential portion is as described in detail in Korean Patent Application No. 10-2013-0000096 filed by the applicant of the present application, and the specification of the specification is cited here.

The main mirror and the plurality of main-viewing and -phaser assemblies are connected to the base plate 11 by bolts or the like in a state in which the centers of the main mirrors M1 are aligned with the centers of the main mirrors M1 by using a centering jig 12. When the main neck portion is assembled, the main-diameter centering jig 12 is removed.

Meanwhile, the axial base plate jig 13 shown in FIG. 1 is configured to serve as a base of the base plate 11 when assembling the main neck portion.

Truss assembly phase

The truss structure assembling step is a step of forming a plurality of trusses connecting the base plate of the assembled circumferential portion and the circumferential base spaced a certain distance in the optical axis direction from the main axis.

As a first step for assembling the truss, it is important to accurately assemble the centering rod 31 to the base plate 11.

3, the base plate 11 on which the primary mirror M1 is assembled is turned upside down on the four base plate support jigs 33, for example. Here, the plurality of base plate support jigs 33 should be assembled with the base plate support jig base 34 in advance.

In this state, the centering rod 31 is inserted into the center hole 300 of the base plate 11 and fastened. In order to prevent collision between the centering rod 31 and the center hole 300, a protector rod 32 may be used.

4, when the centering rod 31 is properly coupled to the center hole of the main mirror M1 through the centering rod 31, And then connecting the base plate 11 and the minor-diameter base 41 by a plurality of trusses 42 is carried out.

4, the plurality of trusses 42 are configured such that one end of the truss 42 is coupled to the plurality of truss bases 43 coupled to the base plate 11, and the other end thereof is coupled to the minor-diameter base 41. As shown in Fig.

Meanwhile, as shown in FIG. 5, the centering rod and the protector rod are removed after the plurality of trusses 42 and the truss base 41 are connected to each other, thereby completing the assembly of the truss structure.

Partial neck  Combining / Sorting Step

The sub-reflecting unit is configured to reflect the light incident from the reflecting portion of the circumferential portion back to the light portion of the circumferential portion. That is, the reflecting portion 100 of the main neck portion has a spherical surface or an aspherical surface because the upper surface is a curved surface, and reflects light applied from the outside to a spherical portion (sub-reflecting device) M2 located on the reflecting portion 100, , And the minor diameter portion reflects the light incident from the reflecting portion 100 back to the light tube portion 300 of the circumferential portion.

As shown in Fig. 6, the minor portion includes a minor diameter M2 and an M2 bezel 61, and the minor diameter bezel 61 is engaged with the minor diameter by a fastening means such as a bolt and a pin. It is preferable that the sub-diameter and the sub-bezel are assembled on the subsidiary support jig 62.

When the assembly of the spherical portion itself is completed, it is assembled with the completed truss structure assembly in advance.

This whole assembly is carried out with the truss structure placed on a plurality of fork jigs 72 projected from the optical table 71 and configured to support the truss structure, as shown in Fig. 7 .

Next, an optical alignment operation on the peripheral portion must be performed, and this sub-portion alignment is enabled by the sub-diameter portion being assembled with the sub-base into the alignment fixture.

8, the alignment fixture is assembled to the center aligner 81 and includes a center cross jig 83 for translating and translating the decenter of the circumferential portion. In other words, the center cross jig 83 is assembled to a center aligner 81 to perform translation and translational movement of the peripheral portion.

The center-to-center x-axis translational movement and the y-axis translational movement are performed through bolt adjustment, and the translation movement to the z-axis in the optical axis direction is adjusted while pushing and pulling the center cross jig 83.

9, the rotation about the x-axis and the rotation about the y-axis are adjusted by using the screw 84 and the spring, because the bezel bonding disc 92 in this drawing is positioned on the M2 center ball 91 ).

Partial neck  Fixed phase

If the sub-mirror is optically final aligned as described above, it must be finally fixed by a bonding operation.

This bonding operation is performed through the first bond injection port 101 and the second bond injection port 102 as shown in FIG. A step of assembling the bezel 61 and the bezel bonding disc 92 by a bond that has passed through the first bond injection port 101 and the step of assembling the bezel bonding disc 92 by a bond that has passed through the second bond injection port 102, And the bezel bonding disc 92 is assembled and fixed to the subsidiary base 41. The bezel-

Then, when the bond is cured, the fixing of the diameter portion is completed. When all the fixtures are removed, the precision assembling and alignment of the reflection optical system is completed (see FIG. 11).

Considering the fact that the concept of precision assembly does not exist to such an extent that a fixture is not used or the method of assembling the fixture is complicated and it is impossible to mass-produce it by conventional methods of assembling a reflective optical system, It is possible to mass-produce a reflective optical system such as a telescope and the like while assembling it precisely.

Although the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims and equivalents thereof.

Main mirror M1 main mirror flexor 400
Base plate 11 Main centering jig 12
Optical axis direction base plate jig 13
Centering rod 31 Protector rod 32
Base plate support jig 33
Base plate support jig base 34
Parallel base 41 Truss 42
Truss base 43 Bore size M2
Pumice bezel 61 Pneumatic support jig 62
Optical table 71 front support jig 72
Fork Jig 73 Fork Rod 74
Center aligner 81 Center cross support jig 82
Center cross jig 83 screw 84
M2 Center Ball 91 Bezel Bonding Disc 92
Bezel bonding disc fixing portion 93 first bond inlet 101
The second bond inlet 102

Claims (19)

In the method of assembling the reflecting optical system,
a) a main body part assembling step of connecting a main mirror having a center hole to a base plate;
b) assembling the truss structure to form a plurality of trusses connecting the base plate of the assembled circumferential portion and a circumferential base spaced a certain distance in the optical axis direction from the main axis;
c) a spherical portion engaging step of engaging a minor diameter portion including a minor diameter to a minor diameter base of the truss structure;
d) a sub-neck alignment step of optically aligning the sub-diameter coupled by the sub-diameter splicing step; And
and e) a spherical portion fixing step of finally fixing the optically aligned minor diameter portion,
The step (e)
e1) assembling the bezel and bezel bonding disc by a bond that has passed through the first bond inlet;
e2) assembling the bezel bonding disc fixture and the bezel bonding disc by a bond that has passed through the second bond injection port and fixing to the minor-diameter base; And
e3) curing the bond;
And a reflective optical system.
The method according to claim 1,
The step (a)
Wherein the main mirror is connected to the base plate in a state where a height of the main mirror is adjusted to a height by using a main mirror centering jig.
3. The method of claim 2,
Wherein the main mirror and the base plate are connected to each other by a plurality of main mirror flexures configured to be positioned therebetween.
3. The method of claim 2,
And an optical axis direction base plate jig configured to serve as a base of the base plate upon assembling the main neck portion.
The method according to claim 1,
The step (b)
b1) coupling one end of the centering rod to the center hole of the main mirror; And
b2) assembling the minor diameter base at the other end of the centering rod, and connecting the base plate and the minor diameter base with the plurality of trusses.
6. The method of claim 5,
The step (b1)
And turning the base plate having the main mirror assembled therein upside down to a plurality of base plate support jigs.
The method according to claim 6,
Wherein the plurality of base plate support jigs are preassembled with the base plate support jig base.
The method according to claim 6,
Wherein a protector rod is used to insert the centering rod into the center hole of the base plate and to fasten the centering rod to prevent collision with the main groove at the time of tightening.
The method according to claim 6,
(B2)
Wherein one end of the truss is connected to a plurality of truss bases coupled to the base plate, and the other end of the truss is coupled to the minor-diameter base to be truss-connected.
9. The method of claim 8,
Wherein the centering rod and the protector rod are removed after connecting the plurality of trusses.
The method according to claim 1,
Wherein the sub-diameter portion in the step (c) includes a sub-diameter bezel and a sub-diameter bezel configured to be coupled to the sub-diameter by the fastening means, and the sub-diameter bezel is assembled on the sub-diameter support jig.
The method according to claim 1,
Wherein the step (c) is performed on a plurality of fork jigs protruding from the optical table and configured to support the truss structure.
The method according to claim 1,
(D) is performed by an alignment fixture that is assembled to a minor-diameter base.
14. The method of claim 13,
Wherein the alignment fixture is assembled to a center aligner and includes a center cross jig for translation with a decenter of the circumferential portion.
15. The method of claim 14,
Wherein the center of the center cross jig is adjusted by bolt adjustment and the translational movement in the optical axis direction is adjusted by the forward and backward movement of the center cross jig in the optical axis direction.
14. The method of claim 13,
Wherein the tilt during the sub-optical part optical alignment adjusts the screw so that rotation of the bezel bonding disc relative to the center ball is adjusted by rotation about the x-axis and rotation about the y-axis.
delete As a reflecting optical system,
A reflecting optical system assembled by a method of assembling a reflecting optical system according to any one of claims 1 to 16.
As a fixture for assembling a reflective optical system,
A fixture for assembling a reflective optical system configured to be used in a method of assembling a reflective optical system according to any one of claims 13 to 16.

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