EP1938134A2

EP1938134A2 - Optical structure comprising an elastic suspension system and method for producing said structure

Info

Publication number: EP1938134A2
Application number: EP06793729A
Authority: EP
Inventors: Ingo Smaglinski; Martin Popp; Thomas Petigk; Thomas Paatzsch
Original assignee: Cube Optics AG
Current assignee: Huber and Suhner Cube Optics AG
Priority date: 2005-10-14
Filing date: 2006-09-21
Publication date: 2008-07-02
Also published as: WO2007042385A2; US20080251683A1; US8267611B2; WO2007042385A3; DE102005049731A1

Abstract

The invention relates to a structure consisting of a first and second component and a connecting element, which joins the two components together and comprises at least two spring elements. The aim of the invention is to provide a structure, in particular an optical structure of the aforementioned type, in which the two components have an extremely high positional and angular degree of accuracy in relation to one another. To achieve this, each spring element has a spring constant that is at least double the value, (in two perpendicular spatial directions), of the third spatial direction, or direction of elasticity, running perpendicular to the first two spatial directions. The two spring elements have elasticity directions that do not run parallel to each other.

Description

Optical structure with elastic suspension and method for producing such

The present invention relates to a structure, in particular an optical structure, consisting of a first and a second component and a connecting element connecting the two components. There are a variety of applications in which two components must be aligned and fixed at a certain distance from each other. Particularly in optics, optical components often have to be aligned with one another with extremely high positional and angular accuracy and then fixed relative to one another in the aligned position in order, for example, to minimize aberrations.

An example of such a construction is shown in DE 100 43 985. Here, the distance between two components is determined by providing one component with four feet which are glued to the other component. However, since certain component tolerances generally exist, the two components must be aligned with one another prior to bonding, with the result that not all four feet usually rise up flat against the opposing component, but partially touch only punctiform or even not at all. During the adjustment thus automatically arise small Justierspalte between the feet and the opposite component. For fixing here an adhesive is used, which surrounds the feet and inevitably fills the corresponding Justierspalte. In other words, the adhesive is used here constructively, since it bridges small Justierspalte, which initially allows an exact alignment of the two components to each other, but possibly due to a shrinkage process of the adhesive during curing may cause a misalignment.

In the structures mentioned above, there is also the problem that the structure is often exposed to certain temperature fluctuations, so that, in particular when the two components have a different thermal expansion, there are deviations from the exact position and the angular orientation by a change in temperature can. Even with the described "constructive" use of the adhesive, there is a misalignment, since the adhesive usually shows a deviating from the components and the feet used expansion behavior with temperature changes.

However, temperature changes not only lead to a misalignment, but often and in particular in the connection technique described in DE 100 43 985 to a bending of at least one component. This is due to the rather rigid connection between the two components. Based on this prior art, it is an object of the invention to provide a structure, in particular an optical structure of the type mentioned above, in which the two components have an extremely high positional and angular accuracy to each other even with larger temperature fluctuations.

According to the invention this object is achieved in that the connecting element has at least two elastic elements or spring elements, each spring element has strong anisotropic elastic properties, so that the spring constant in two mutually perpendicular directions in space is at least twice as large as in the third, to the both first spatial directions perpendicular, the so-called elasticity direction, wherein the two spring elements have elasticity directions that are not parallel to each other.

In general, the term "spring constant" or "spring reference variable" is understood to mean the proportionality constant, which relates the deflection of a linear spring to the resulting deflection force. In practice, however, linear springs are not easy to implement. The elastic elements or the spring elements can be deflected in general not only in one spatial direction from its rest position, but also in the other direction perpendicular thereto. The smaller the spring constant, the softer the spring element or the easier it is for the spring element to be deflected out of the rest position Accordingly, it will be assumed below that the spring elements which can otherwise be realized by any elastic element, However, the spring constant in at least one direction is at most half as large as in the other directions, so that the spring elements provide a comparatively "soft" connection in one direction (this direction becomes the direction of elasticity) It will be understood that, strictly speaking, there is no linear relationship between deflection force and deflection, and thus the spring constant is only an approximation, that is, for small deflections, in the present invention goes, but the reality very well beschrei bt.

Even if each non-parallel arrangement of the elasticity directions brings about advantages according to the invention, an essentially vertical arrangement of the two elasticity directions relative to one another is advantageous, in particular when only two spring elements are used. The described measure ensures that at least the angular accuracy remains relatively high for larger temperature changes. In this case, each spring element serves, on the one hand, to permit the movement of the first component relative to the second component to a limited extent, in particular in the case of a temperature change, in one direction, the so-called elasticity direction, while a corresponding relative movement in the other directions extending approximately perpendicularly thereto as possible prevented. The elasticity direction runs in a zugten embodiment substantially parallel to the mutually aligned surfaces of the components.

In a particularly preferred embodiment, the directions of elasticity of the two spring elements include an angle between 50 and 130 °, preferably between 70 and 110 ° and particularly preferably between 85 and 95 °. Basically, an angle of about 90 ° is best, because then each one element in one direction provides the necessary elasticity and in the other direction provides the necessary stability.

When using substantially rigid connecting elements, as is customary in the prior art, they also exert a certain bending moment on at least one of the components when one of the components is shortened or lengthened relative to the other. By providing a "soft" direction through the connector, the torque applied to the components is significantly reduced, resulting in higher angular accuracy.

Depending on the shape and size of the components, it may be advantageous to use more than two spring elements with correspondingly anisotropic spring constants. When using three spring elements, these could for example be arranged so that in each case two directions of elasticity form an angle between 100 and 140 °.

In order to achieve an extremely accurate positioning of a first component relative to a second component and a corresponding elastic bearing even with temperature differences with high position and angular accuracy, is provided in a particularly preferred embodiment that four spring elements are provided, the spring constant in each case in two mutually perpendicular directions in space at least is twice as large as in the third, to the two first spatial directions vertical spatial directions, the so-called elasticity direction is, all elasticity directions are substantially in one plane. In particular, in the alignment of optical components to each other, these often have two mutually aligned surfaces. The spring elements are advantageously aligned in such a way that the plane which is spanned by the directions of elasticity runs parallel to the surface of the component to be aligned.

In particular, it is advantageous if two of the four spring elements have approximately parallel directions of elasticity and the spring elements of the other two of the four spring elements also have approximately parallel directions of elasticity, wherein the elasticity directions of the first pair of spring elements with the elasticity directions of the second pair of spring elements an angle between 50 and 130 °, preferably between 70 and 110 ° and more preferably between 85 and 95 °.

Furthermore, it is provided in a particularly preferred embodiment that at least one pair of spring elements is arranged so that their directions of elasticity on the imaginary connection connecting line between the points of the individual spring elements of the spring element pair is located on one of the components.

The connecting element may be formed integrally with one of the two components in a particularly preferred embodiment. This has the advantage that it does not cause bending moments due to thermal fluctuations, because then the component and the connecting element have the same coefficient of thermal expansion.

The connecting element itself may be formed in one piece or in several parts. In principle, therefore, all the spring elements can be integrally formed. Instead, the connecting element can also consist of different separate spring elements.

In a further particularly preferred embodiment it is provided that the first component has a surface facing the second component and one or more adjoining the surface edge surface or edge surfaces, wherein the spring elements are connected to the edge surface. In other words, according to the invention, the spring elements do not act on the surface facing the second component, but instead on the edge surfaces. This has the particular advantage that the first component relative to the second component can be adjusted in a first step and then the spring elements can be attached to the outer edge surfaces of the component, so that the adhesive used for the attachment or the corresponding spot weld not constructive contributes to the determination of the distance between the two components.

Furthermore, it is provided in a particularly preferred embodiment that the second component has a surface facing the first component and that the connecting element is connected to the surface of the second component. In other words, the connecting element is on the surface of the second component. This can be moved freely for the positioning of the two components to each other first on the surface of the second component. In the next step, the connecting element is then fixed on the surface of the second component.

The connecting element may be, for example, an etching part. Etched parts can be produced inexpensively with fairly high precision.

It has been shown that the spring elements are suitably made of metal, even if other materials are used in principle. Metal exhibits typical elastic properties which are particularly suitable for the present invention. Conveniently, the metal is selected such that it exhibits approximately the same expansion behavior as the second component. More specifically, it is advantageous if the volume expansion coefficient of the spring elements or the connecting element at 25 ° C by not more than 20%, preferably not more than 10% and particularly preferably not deviates by more than 5% from the volume expansion coefficient of the second component.

Furthermore, the volume expansion coefficient of the spring elements should be as small as possible, preferably smaller than 0.02 and particularly preferably smaller than 0.01 K ^-1 at 25 ° C. This ensures that the distance between the two components changes only slightly with a temperature change ,

In a further particularly preferred embodiment, the spring elements are made of a material whose modulus of elasticity is at least 1000 times greater, preferably at least 2000 times greater and more preferably at least 5000 times greater than the maximum elastic tensile strength.

It has been found that the spring constant in the "soft" direction or the elasticity direction, in particular for optical applications, is less than 40 N / mm, preferably less than 25 N / mm and particularly preferably less than 15 N / mm.

Although in principle all different types of connection between the connecting element on the one hand and the first or second component on the other hand are possible, so has a bonding or welding, preferably a bond, proved to be particularly easy to handle. In particular, bonding and welding provide a stepless adjustability of the position of the two components relative to one another.

The connecting element consists in a first embodiment of a substantially square base surface, which is connected to the surface of the second component, and four angled prong-shaped spring elements which are connected to the edge surface of the first component. Such a connecting element can be produced, for example, as an etched part in one piece from metal, wherein the individual serrated spring elements are then angled at approximately 90 ° to the square base. Furthermore, it is expedient if the square base has an approximately centrally arranged recess, which is optionally also square. Of course, the base and the possibly existing recess depending on the application also have a different shape.

Alternatively, a further embodiment of a connecting element has proved successful, in which this consists of a web frame and four jagged Federele- extending therefrom. In this case, the web frame is placed on the surface of the second component, while the serrated spring elements extending therefrom engage the edge surface of the second component. It is particularly useful if the serrated spring elements have a contact portion that comes into contact with the first component, and a portion with respect to the contact portion of reduced thickness. This improves the resilient properties.

Furthermore, the present invention relates to a method for producing a construction according to the invention. The object mentioned is achieved by a method according to one of claims 20 to 24.

Further advantages, features and applications of the present invention will become apparent from the following description of some preferred embodiments. Show it:

1 shows an exemplary construction of the prior art before the connection of the two components,

Figure 2 is a schematic representation of a construction of the prior art, Figures 3 and 4 are schematic representations of the processes in a temperature change in a structure according to the invention, Figure 5 is a representation of a first embodiment of an inventive

Connecting element,

6 shows a second embodiment of the construction according to the invention, FIG. 7 shows a third embodiment of the construction according to the invention,

FIG. 8 shows a fourth embodiment of the construction according to the invention,

FIG. 9 shows a fifth embodiment of the construction according to the invention,

Figures 10 and 1 1, a sixth embodiment of the structure according to the invention and Figures 12 and 13, a seventh embodiment of the structure according to the invention.

FIG. 1 shows an exploded view of a construction according to the prior art. Evident is a first component 1, a second component 2 and a connecting element 3. The connecting element 3 is here attached in one piece to the first component 1 and consists of four spacer feet, which extend from the component 1 in the direction of the component 2. In order to position the component 1 relative to the component 2, the spacer feet 3 are formed such that they correspond approximately to the desired distance between the component 1 and component 2. In order to position and fix the two components 1, 2 exactly relative to one another, in a first step the component 1 is aligned relative to the component 2 such that relative positions and the angular orientation are correct. As a rule, at least one of the spacer feet 3 will then be placed directly on the surface of the second component 2. Nevertheless, due to component tolerances in some of the spacer feet 3, a small gap will remain. To fix the spacer feet 3 are glued to the top of the component 2. The adhesive used will also fill the remaining gaps. In the final state, the cured adhesive is thus used constructively, since it reduces the distance between co-determined with the component 1 and the component 2. The distance feet here have a square profile and are essentially rigid.

This becomes particularly clear with reference to FIG. 2, which shows a schematic diagram of the connecting elements used hitherto. Here it can be seen clearly that the component 1 is seated with the right Distanzfuß 3 on the second component 2, while the exact positioning of the first component 1 relative to the second component 2 makes a gap between the left Distanzfuß 3 and the second component 2 is required , Adhesive 8 is then used to fix the two components, and the adhesive δ then bridges the gap between the left spacer foot 3 and the second component 2. It can be seen immediately that, in the event that the adhesive 8 hardens, it shrinks the adhesive content comes, this possibly changed the previously achieved position and angle adjustment again. In addition, the compound shown in Figures 1 and 2, which corresponds essentially to that described in DE 100 43 985, relatively rigid. As a result of a change in temperature, there will be tensions within the components, which will be the greater the more different the components expand as the temperature changes. In particular, in optical structures that require an angular accuracy of less than 0.5 mrad, the known connection technology can only be used if all the materials used have the same coefficient of expansion or the structure is temperature-stabilized.

FIG. 3 shows schematically how a construction according to the invention behaves when the temperature changes. In the structure according to the invention, the first component 1 via four spring elements (4, 5, 6, 7 - wherein the fourth spring element 5 is not visible in Figure 3, since it is behind the spring element 6) connected to the component 2. The two spring elements 4 and 7 have a direction of elasticity, which runs in the figure 3 from left to right. The two other spring elements 5 and 6, however, have a direction of elasticity which is perpendicular to the image plane.

It was assumed that the first component 1 has a greater coefficient of thermal expansion than the second component 2. For clarification, in the first component 1, a very large thermal expansion and in the second component 2 no thermal expansion were assumed. It is understood that the expansion effect in practice is much smaller and is not visible to the naked eye.

In Figure 3, the first component 1 is once in the original size with a solid line, hatched once at a higher temperature with a dashed line and once at a lower temperature and shown with dotted line. Since the first component 1 expands more strongly than the second component 2, this inevitably leads to the spring elements 4, 5, 6, 7 bending, wherein in the view shown only the bending of the two spring elements 4 and 7 can be seen. This bending is shown schematically by the additional spring elements shown in dashed lines. Since the first component 1 is fixed by means of the spring elements 6 and 5 in the direction of the arrow comes There is no change in the overall position of the first component 1 in the arrow direction, but the component 1 expands, starting from the attachment point of the spring elements 5, 6 on the first component evenly to the right and left (or contracts). This ensures that the first component 1 does not tilt with respect to the second component 2 and maintains its position fairly exactly.

As already stated, the prior art fasteners exert a bending moment on the components due to their very rigid connection. This is prevented by the suspension according to the invention, as shown schematically in Figure 4, which substantially corresponds to Figure 3, particularly clearly.

According to the invention, the spring elements are very flexible in one spatial direction, while they are relatively rigid in the two directions perpendicular thereto. By this measure, a change in length of the first component 1 relative to the second component 2 by the flexible spring elements 4, 5, 6, 7 are added. Any bending takes place essentially within the spring elements 4, 5, 6, 7 and not within one of the two components 1, 2. By providing the spring elements 5 and 6, which are quite rigid in the "soft" direction or the elasticity direction of the spring element 4, 7, in principle a kind of fixed point 19 is determined. This fixed point 19 remains constant by the relatively rigid connection in the arrow direction by means of the spring elements 5, 6 in the position above the second component 2. The first component 1 extends to the right and left of the fixed point 19 or contracts there without the fixed point 19 changes. In other words, u is different. a. The present invention of the prior art in that is fixed by the tricky suspension only one point of the first component 1 with respect to the second component 2, while in the prior art, a fixation over several points followed and thus occurred with temperature changes voltages ,

As a result, even with larger temperature fluctuations only a small positional deviation and almost no angular error can be determined. Experiments have shown that the positioning and angular accuracy can be improved enormously by the inventive measure.

For better clarity, a first embodiment of the construction according to the invention is shown in FIG. Evident is the first component 1, the second component 2 and four spring elements 4, 5, 6, 7, which connect the two components. Each of these spring elements 4, 5, 6, 7 is designed so that it allows an elastic bending of the spring element relative to the first component 1 in one direction, but substantially prevented in the two perpendicular thereto directions.

For explanation, consider, for example, the tab-shaped spring element 4 shown in the front in FIG. 5. This spring element permits elastic bending such that the first component 1 can easily move forwards and backwards relative to the second component 2, while moving to the right or left or from top to bottom is essentially excluded. In other words, allow the two spring elements 4, 7 a movement in the direction of the line 13, which is parallel to the second component 2. The two spring elements 5, 6 instead allow some movement along the line 14, while substantially preventing movements in the other directions. This results essentially in the height of the intersection of the two lines 13 and 14 to a fixed point (or pivot point) 19, so that the first component 1 and the second component 2 in the amount of this fixed point exactly ülieinnerlie¬ even with larger temperature fluctuations. Any length expansions are removed starting from this fixed point in the direction of the axes 13 and 14. It could therefore be said that if the first component 1 were to expand due to an increased coefficient of expansion relative to the second component 2, this expansion takes place in the direction of the arrows starting from the fixed point 19 which lies at the intersection of the two lines 13, 14 , All four spring elements 4, 5, 6, 7 therefore bend slightly, with the two components 1, 2 remaining substantially exactly in the same angular position relative to one another. The spring elements 4, 5, 6, 7 engage as possible on the outer or edge surfaces of the first component 1. In principle, the farther apart the points of application of the spring elements 4, 5, 6, 7 lie with the same (or parallel) elasticity direction, the better the angular rigidity of the construction.

Furthermore, it can be seen that the spring elements 4, 5, 6, 7 are not all arranged in the middle of the provided by the base surface 9 sides, but the spring elements 4, 7 are slightly outwardly (in the figure 5 to the right) offset. This results in that the fixed point 19 is not located in the center of the first component 1. This measure can be advantageous if optical components which are particularly sensitive to positional errors are not located in the center of the component on a component. The fixed point is advantageously placed exactly where the elements with the greatest sensitivity to misalignment are positioned.

FIG. 6 shows a second embodiment of a construction according to the invention. The picture below shows an exploded view and the composite construction above. The structure consists of the first component 1, the second component 2 and a connecting element 3, which here has two spring elements 4, 5. The connecting element 3 is seated on the surface of the second component 2 facing the first component 1. The spring elements, which extend from a kind of web, come into contact with the edge surfaces of the first component 1. An additional advantage here is that the connecting element 3 is seated flat on the second component 2. Any component tolerances are compensated by the positioning of the first component 1 with respect to the two spring elements 4, 5. As soon as the first component 1 is positioned relative to the component 2, the connecting element 3 is adhesively bonded to the edge surfaces of the first component 1 at the same time both with the surface of the second component 2 and via the spring elements 4, 5. This ensures a completely stress-free rest position. In this structure, the adhesive is not used constructively to determine the distance between the two components to each other, ie it is not used to fill up adjusting columns between connecting element 3 on the one hand and a the two components 1, 2 on the other. Therefore, it is essential that the spring elements 4, 5 on the outer or edge surfaces of a component, namely here the first component 1, attack. The first spring element 4 is designed such that, as indicated in FIG. 6 above, it has a high elasticity in the direction of the double arrow, which is much greater than the elasticity in the directions perpendicular thereto. In the same way, the spring element 5 shows a corresponding anisotropic behavior, the soft axes, the so-called elasticity directions, not parallel, but in the present case form an angle of about 90 °. This type of connection of the two components makes it possible that the optical structure can be exposed to greater temperature fluctuations, without causing a misalignment of the two components to each other.

FIG. 7 shows a third embodiment, in which the connecting element 3 has a total of three spring elements 4, 5, 6.

Figure 8 shows a fourth embodiment in which the connecting element is round and has a total of four spring elements 4, 5, 6, 7. In principle, the connecting element 3 can assume any desired shape, which is advantageously adapted to the edge surfaces of the first component 1 to be positioned above the second component 2.

Another example is shown in FIG. 9, which essentially corresponds to the embodiments of FIGS. 7 and 6, wherein here too four spring elements 4, 5, 6, 7 are provided.

Finally, FIG. 10 shows a special embodiment of a connecting element 3. The connecting element 3 is designed here as an etching part and is made of metal. The connecting element 3 has a substantially square base 9, the square base 9 has a square recess 10 also. Four spring elements 4, 5, 6, 7 are connected to the square base 9. The spring elements 4, 5, 6, 7 are each tab-shaped or pin-shaped and have a contact portion 11 and a particularly flexible portion 12 with a relation to the contact portion 11 reduced thickness. As can be seen in Figure 10 above, the four spring elements 4, 5, 6, 7 are simply bent upwards after preparation in the etching process, so that the spring elements 4, 5, 6, 7 with the base 9 a substantially right angle lock in. In the figure 11 is an exploded view in a perspective view of the assembled structure to recognize how the individual parts are joined together. This embodiment of the connecting element 3 has the advantage that due to the large base 9, the connecting element 3 can be securely fixed to the surface of the second component 2. However, it has the disadvantage that due to the bending of the spring elements 4, 5, 6, 7 relative to the base 9 at the bending line 20, the spring elements 4, 5, 6, 7 are relatively soft, so that they spring elements movement of the first component 1 to the second component 2 to or from this way can not completely prevent. It can be seen in Figure 11 above that the spring elements 4, 5, 6, 7 each with their contact surface 11 on the edge surface of the first component 1 present. By this connecting element can almost the entire distance between the two components 1 and 2 for the spring elements 4, 5, 6, 7 are used, since the base 9 is very flat.

FIG. 12 shows a further embodiment of an inventive connecting element 3. This connecting element 3 consists of a web 15 and four extending therefrom spring elements 4, 5, 6, 7, each having a contact portion 1 1 and an adjoining portion with respect to the contact portion 1 1 reduced thickness. The web 15 has predetermined bending points 16 and a closure bending mechanism 17, 18, so that the web shown below in Figure 12 can be bent at the predetermined bending points 16 into a rectangle or a square, as shown in Figure 12 above. Figure 13 shows in a perspective view and in an exploded view, how this embodiment of the connecting element 3 is used for positioning and fixing of two components. The connecting element shown in FIGS. 12 and 13 has the advantage over the connecting element shown in FIGS. 10 and 11 that the spring elements 4, 5, 6, 7 extend in the vertical direction, i.e. in the vertical direction. during a movement of the first component 1 on the second component 2 to or away from this, is rigid. Instead, it has a smaller contact surface on the surface of the second component 2. The contact surface of the web 15 on the surface of the component 2 can be further reduced if the web has recesses 21. In principle, the web 15 could also be designed so that it essentially sits on only 3 points on the surface of the second component. The smaller bearing surface has the advantage that the connecting element has a better support position.

As a result of the construction according to the invention, it is possible by simple means to achieve a significantly simplified fixation of two components relative to one another. The components can be aligned with each other in all 6 degrees of freedom (3 translational and 3 rotational). The proposed elastic suspension also has the advantage that it provides a very high positional and angular accuracy even with larger temperature fluctuations, especially when the two components aligned to each other have different coefficients of expansion. LIST OF REFERENCE NUMBERS

1 first component

2 second component

3 connecting element

4 spring element

5 spring element

6 spring element

7 spring element

8 adhesive

9 square base

10 square recess

1 1 contact section

12 flexible section

13, 14 lines

15 footbridge

16 predetermined bending points

17 locking mechanism

18 locking mechanism

19 fixed point (pivot point)

20 bending line

21 recess

Claims

PATENT CLAIMS E

1. assembly consisting of a first and a second component (1, 2) and a two components (1, 2) connecting the connecting element (3) having at least two spring elements, each spring element (4, 5, 6, 7) a spring constant which is at least twice as great in two mutually perpendicular spatial directions as in the third spatial direction perpendicular to the two first spatial directions, the so-called elasticity direction, wherein the two spring elements have elasticity directions which do not run parallel to one another.

2. Structure according to claim 1, characterized in that the two components (1, 2) have different thermal expansion coefficients.

3. Structure according to claim 1 or 2, characterized in that the two elasticity directions form an angle between 50 and 130 °, preferably between 70 and 1 10 ° and more preferably between 85 and 95 °.

4. Structure according to claim 1 or 2, characterized in that at least three spring elements (4, 5, 6) each having a spring constant, which is in two mutually perpendicular directions in space at least twice as large as the spring constant in the third to the two spatial directions, the so-called elasticity direction, is provided, wherein the elasticity direction of the three spring elements (4,

5, 6) lie approximately in one plane.

5. Structure according to claim 4, characterized in that each pair of elasticity in each case includes an angle between 100 and 140 °.

6. Structure according to one of claims 1 to 5, characterized in that four spring elements (4, 5, 6, 7) are provided, the spring constant in two mutually perpendicular

Spaces each is at least twice as large as the spring constant in the third to the two first spatial directions vertical spatial direction, the so-called elasticity direction, and wherein all directions of elasticity are substantially in one plane.

7. Structure according to claim 6, characterized in that two of the four spring elements (4, 5,

6, 7) have approximately parallel directions of elasticity and the spring elements of the other two of the four spring elements (4, 5, 6, 7) also have approximately parallel elasticity directions, wherein the elasticity directions of the first pair of spring elements with the elasticity directions of the second pair of spring elements an angle between 50 and 130 °, preferably between 70 and 110 ° and more preferably between 85 and 95 °.

8. Structure according to one of claims 1 to 7, characterized in that the connecting element (3) integral with one of the two components (1, 2) is formed.

9. Structure according to one of claims 1 to 7, characterized in that the connecting element (3) are integrally formed.

10. Structure according to one of claims 1 to 9, characterized in that the first component (1) has a second component (2) facing surface and one or more adjoining the surface edge surfaces, wherein the spring elements (4, 5, 6, 7) are connected to the edge surface.

1 1. Structure according to one of claims 1 to 10, characterized in that the second component (2) has a surface facing the first component and that the connecting element (3) with the surface of the second component (2) is connected.

12. Structure according to one of claims 1 to 1 1, characterized in that the connecting element (3) is an etched part.

13. Structure according to one of claims 1 to 12, characterized in that the spring elements (4, 5, 6, 7) are made of metal.

14. Structure according to one of claims 1 1 to 13, characterized in that the connecting element (3) with the second component (2) glued or welded, preferably glued.

15. Structure according to one of claims 10 to 14, characterized in that the spring elements (4, 5, 6, 7) with the edge surface or the edge surfaces of the first component (1) glued or welded, preferably glued.

16. Structure according to one of claims 1 to 15, characterized in that the connecting element (3) of a substantially square base surface (9) which is connected to the surface of the second component (2), and four angled zackenför- shaped Spring elements (4, 5, 6, 7).

17. Structure according to one of claims 1 to 15, characterized in that the connecting element (3) consists of a web frame and four extending therefrom zackenförmi- gene spring elements (4, 5, 6, 7).

18. Structure according to claim 16 or 17, characterized in that the serrated spring elements (4, 5, 6, 7) has a contact portion (1 1), which comes into contact with the first component (1), and a portion with respect to the Contact portion (1 1) have reduced thickness.

19. Structure according to one of claims 1 to 18, characterized in that each spring element (4, 5, 6, 7) in two mutually perpendicular spatial directions spring constants, each at least ten times as large, preferably at least fifty times as large and more preferably at least are a hundred times as large as the spring constant in the third direction perpendicular to the first two spatial directions, the so-called

Elastic direction is, wherein the two spring elements have elasticity directions that are not parallel to each other.

20. A method for producing a structure according to one of claims 1 to 19, character- ized in that first the connecting element is positioned on the second component, then the first component is aligned with respect to the second component and finally the connecting element with both the first and also connected to the second component.

21. The method according to claim 20, characterized in that the connection of the connecting element on the one hand and the component on the other hand by means of gluing.

22. The method according to claim 20 or 21, characterized in that in the positioning of the first component relative to the second component, the first component is moved together with the connecting element on the surface of the second component until the desired position is reached.

23. The method according to claim 21 or 22, characterized in that the first component is aligned such that the spring elements of the connecting element come to lie in the immediate vicinity of the edge surfaces of the first component and the spring elements are attached to the edge surfaces of the first component ,

24. The method according to claim 23, characterized in that the first component is aligned such that the spring element does not touch the edge surfaces of the first component and in the connection of spring element and edge surface of the remaining gap is filled with adhesive.