CN221101128U - Optical main system connected by rigid-flexible matching structure - Google Patents
Optical main system connected by rigid-flexible matching structure Download PDFInfo
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- CN221101128U CN221101128U CN202323251981.0U CN202323251981U CN221101128U CN 221101128 U CN221101128 U CN 221101128U CN 202323251981 U CN202323251981 U CN 202323251981U CN 221101128 U CN221101128 U CN 221101128U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 75
- 230000007613 environmental effect Effects 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 6
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 5
- 230000013011 mating Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 6
- 239000012141 concentrate Substances 0.000 abstract description 2
- 230000035882 stress Effects 0.000 description 13
- 238000009434 installation Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000011900 installation process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of optical equipment, and provides an optical main system connected by adopting a rigid-flexible matching structure, which comprises: the device comprises a main lens assembly, a secondary lens barrel and a main system frame, wherein the main lens assembly and the secondary lens assembly are respectively arranged at two ends of the secondary lens barrel and are rigidly connected with the secondary lens barrel; the main system frame is sleeved outside the secondary lens barrel and is flexibly connected with the main lens assembly, so that after the environmental conditions of the optical main system change, load stress and deformation are transmitted to the flexible connection part for release. The optical main system connected by adopting the rigid-flexible matching structure can concentrate deformation and stress on the flexible connection part and the main system frame when the optical main system faces complex environmental load, so that the position between the main mirror assembly and the secondary mirror assembly is used as a relative rigid body, the position between the main mirror assembly and the secondary mirror assembly cannot be changed, and further, the optical performance index of the optical main system is ensured not to be changed or controlled in an allowable range.
Description
Technical Field
The utility model relates to the technical field of optical equipment, in particular to an optical main system connected by adopting a rigid-flexible matching structure.
Background
The existing optical main system adopts rigid structure connection among all components, and because the optical main system has extremely high requirements on the shape and relative position accuracy of the main mirror and the secondary mirror surface, and the environment faced by the optical main system is quite complex, the influence of factors such as various vibration loads born by the optical main system, thermal stress loads caused by temperature change, installation stress loads caused by machining errors in the installation process of each structure and the like on the optical performance index of the main system needs to be comprehensively considered in the design process. The following problems exist with existing optical host systems in which all structural components are connected using rigid structures when subjected to these loads: 1. when the vibration load is in a large-magnitude environment, deformation and stress caused by the vibration load are basically uniformly borne by all parts of the optical main system due to the adoption of a rigid structure connection mounting mode, once the vibration magnitude is overlarge, the relative positions of the main mirror and the secondary mirror are changed, and even the stress is transmitted to the main mirror to cause the change of the surface shape of the main mirror. Because of the higher sensitivity of the main system, these all lead to deterioration of the optical performance index of the optical main system; 2. in the face of temperature change, the materials selected for each component of the optical main system have different thermal expansion coefficients, so that unmatched displacement loads exist after the materials with different thermal expansion coefficients are caused when the temperature is changed, the structures are deformed mutually, and as the rigid structure is adopted for connection and installation, the thermal deformation amount of each structural member is basically equivalent, the relative positions of the main mirror and the secondary mirror are also changed, so that the optical performance index of the optical main system is deteriorated; 3. in the face of installation stress load, due to the limitation of machining errors and machining precision, the rigid connection installation surface between the main mirror back plate and the main system frame cannot be an absolute plane, the existing machining precision limit is within 5um of flatness, and under the condition of flatness, practice proves that obvious installation deformation still exists in the rigid structure connection installation process, so that the relative positions of the main mirror and the secondary mirror are changed, and the optical performance index of the optical main system is deteriorated.
Disclosure of utility model
The utility model provides an optical main system connected by adopting a rigid-flexible matching structure, which is used for solving the defect that the relative position between a main mirror and a secondary mirror is easy to change when the environment changes due to the fact that all parts of the optical main system are rigidly connected in the prior art.
The utility model provides an optical main system connected by adopting a rigid-flexible matching structure, which comprises: the lens system comprises a main lens assembly, a secondary lens barrel and a main system frame, wherein the main lens assembly and the secondary lens assembly are respectively arranged at two ends of the secondary lens barrel and are rigidly connected with the secondary lens barrel; the main system frame is sleeved outside the secondary lens barrel and is flexibly connected with the main lens assembly, so that after the environmental condition of the optical main system changes, load stress and deformation are transmitted to a flexible connection part for release, and the relative position between the main lens assembly and the secondary lens assembly is unchanged.
According to the optical main system connected by adopting the rigid-flexible matching structure, the main system frame is connected with the main mirror assembly through a plurality of flexible connecting pieces.
According to the optical main system connected by adopting the rigid-flexible matching structure, the main system frame is a flexible main system frame.
According to the optical main system connected by adopting the rigid-flexible matching structure, each flexible connecting piece is provided with a bending part, and two ends of the flexible connecting piece are respectively connected with the main system frame and the main mirror assembly.
According to the utility model, an optical main system connected by a rigid-flexible matching structure is provided, and each flexible connecting piece comprises: the first connecting parts and the second connecting parts are arranged in parallel along the extending direction of the length of the first connecting parts, and each second connecting part is provided with the bending part; wherein one of the first connection portion and the second connection portion is connected with the main system frame, and the other is connected with the main mirror assembly.
According to the utility model, an optical main system connected by a rigid-flexible matching structure is provided, and the main mirror assembly comprises: the main lens plate is rigidly connected with the secondary lens barrel and is connected with the main system frame through the flexible connecting piece; and the main mirror is rigidly connected with the main mirror plate.
According to the optical main system connected by adopting the rigid-flexible matching structure, the main lens plate is provided with the first surface and the second surface which are opposite, the first surface is connected with the secondary lens barrel, the second surface is provided with a plurality of notches in a circumferential direction, and each notch is connected with one flexible connecting piece respectively.
According to the utility model, an optical main system connected by a rigid-flexible matching structure is provided, and the main system frame comprises: a frame part sleeved outside the secondary lens barrel; the third connecting parts are annularly arranged along the circumferential direction of the frame part, and each third connecting part is connected with the frame part and the main mirror assembly respectively.
According to the optical main system connected by adopting the rigid-flexible matching structure, the flexible connecting piece is a titanium alloy flexible connecting piece.
According to the present utility model, there is provided an optical primary system connected by a rigid-flexible matching structure, the secondary mirror assembly comprising: a secondary lens base rigidly connected with the secondary lens barrel; and the secondary mirror is rigidly connected with the secondary mirror seat.
According to the optical main system adopting the rigid-flexible matching structure for connection, the main mirror assembly is flexibly connected with the main system frame, and the main mirror assembly, the secondary lens barrel and the secondary mirror assembly are rigidly connected, so that deformation and stress can be concentrated on the flexible connection part and the main system frame when the optical main system faces complex environmental loads, the position between the main mirror assembly and the secondary mirror assembly is used as a relative rigid body, the position between the main mirror assembly and the secondary mirror assembly is not changed, and the optical performance index of the optical main system is not changed or controlled within a permissible range.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an optical host system employing rigid-flexible mating structure connection provided by the present utility model;
FIG. 2 is a cross-sectional view of an optical host system employing rigid-flexible mating structure connection as provided by the present utility model;
FIG. 3 is a schematic structural view of a flexible connection unit;
FIG. 4 is a schematic structural view of a flexible main system frame;
reference numerals:
10: a main mirror plate; 11: a notch; 20: a secondary barrel; 30: a secondary mirror base; 40: a main system frame; 41: a frame portion; 42: a third connecting portion; 50: a flexible connection member; 51: a first connection portion; 52: and a second connecting part.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The features of the utility model "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
The optical host system of the present utility model employing a rigid-flexible mating structure connection is described below in conjunction with fig. 1-4.
As shown in fig. 1 and 2, in an embodiment of the present utility model, an optical main system connected using a rigid-flexible matching structure includes: a main mirror assembly, a sub-lens barrel 20, and a main system frame 40. The main lens assembly and the sub lens assembly are respectively arranged at two ends of the sub lens barrel 20 and are rigidly connected with the sub lens barrel 20. The main system frame 40 is sleeved outside the secondary lens barrel 20, and the main system frame 40 is flexibly connected with the primary lens assembly, so that after the environmental condition of the optical main system changes, load stress and deformation are transmitted to a flexible connection part to be released, and the relative position between the primary lens assembly and the secondary lens assembly is unchanged.
Specifically, the primary mirror assembly and the secondary mirror assembly are respectively disposed at two ends of the secondary lens barrel 20 and are rigidly connected to the secondary lens barrel 20, the primary mirror assembly and the primary system frame 40 are flexibly connected, when the complex environmental load is faced, all deformation and stress of the optical primary system are concentrated at the flexible connection and the primary system frame 40, and the primary mirror assembly and the secondary mirror assembly are used as a relatively rigid body, so that the positions between the primary mirror assembly and the secondary mirror assembly are not changed relatively, and the optical performance index of the optical primary system under the complex environmental load is not changed or controlled within a permissible range.
According to the optical main system adopting the rigid-flexible matching structure connection, the main mirror assembly is flexibly connected with the main system frame, and the main mirror assembly, the secondary lens barrel and the secondary mirror assembly are rigidly connected, so that deformation and stress can be concentrated on the flexible connection part and the main system frame when the optical main system faces complex environmental loads, the position between the main mirror assembly and the secondary mirror assembly is used as a relatively rigid body, the position between the main mirror assembly and the secondary mirror assembly is not changed, and the optical performance index of the optical main system is not changed or controlled in a permissible range.
Further, as shown in fig. 1 and 2, in an embodiment of the present utility model, the main mirror assembly includes: the lens system comprises a main lens plate 10 and a main lens, wherein the main lens plate 10 is rigidly connected with one end of the secondary lens barrel 20, the main lens is rigidly connected with the main lens plate 10, and the main lens plate 10 is flexibly connected with a main system frame 40. The secondary mirror assembly includes: the secondary lens base 30 and the secondary lens, the secondary lens base 30 is rigidly connected with the other end of the secondary lens barrel 20, and the secondary lens is rigidly connected with the secondary lens base 30, so that a relatively rigid body is formed among the primary lens, the primary lens plate 10, the secondary lens barrel 20, the secondary lens base 30 and the secondary lens.
Alternatively, in one embodiment of the utility model, the main system frame 40 is connected to the main mirror assembly by a plurality of flexible connectors 50. In this embodiment, the rigidity of the flexible connection unit 50 is critical, and if the rigidity is large, the function of releasing the load and stress cannot be performed; if the rigidity is small, the fundamental frequency of the whole optical main system is too low, so that the load response of the whole optical main system is too large, and the optical main system is very unfriendly. In the present embodiment, the fundamental frequency of the flexible connection unit 50 is 400Hz or more, and the fundamental frequencies of the sub-tube 20 and the main lens plate 10 are 2000Hz or more. Since the main deformation and stress of the optical main system are mainly concentrated on the flexible connection unit 50, the yield strength of the flexible connection unit 50 is required to be high, and the flexible connection unit 50 is usually made of titanium alloy. Alternatively, in the present embodiment, the titanium alloy may be TC4.
As shown in fig. 2, in the embodiment of the present utility model, each flexible connection unit 50 has one bending portion, and both ends of the flexible connection unit 50 are connected to the main system frame 40 and the main mirror assembly, respectively.
Specifically, the main lens plate 10 has opposite first and second surfaces, the first surface is connected to the sub-lens barrel 20, and the second surface is provided with a plurality of notches 11 in a ring shape, and each notch 11 is connected to one flexible connection member 50.
The shape of the flexible connection 50 varies for different heights between the main system frame 40 and the gap 11. Specifically, as shown in fig. 2, when the bottom surface of the main system frame 40 is located above the notch 11, the flexible connection member 50 has a bent portion, so that two ends of the flexible connection member 50 are respectively connected with the notch 11 and the bottom surface of the main system frame 40, and under the condition that the optical main system faces the load, the load and the stress can be concentrated on the flexible connection member 50, thereby ensuring that the relative positional relationship between the main mirror and the secondary mirror, and the surface shapes of the main mirror and the secondary mirror are not changed or the change amount is within the allowable range under the load of various complex environments. When the bottom surface of the main system frame 40 is flush with the notch 11, the flexible connection unit 50 may have a straight bar-shaped structure, and the specific size thereof may be designed according to the actual required fundamental frequency.
Further, as shown in fig. 3, in an embodiment of the present utility model, each flexible connection unit 50 includes: the first connecting portion 51 and the plurality of second connecting portions 52, the plurality of second connecting portions 52 are disposed in parallel along an extending direction of a length of the first connecting portion 51, each of the second connecting portions 52 is provided with a bending portion, wherein one of the first connecting portion 51 and the second connecting portion 52 is connected with the main system frame 40, and the other is connected with the main mirror assembly.
Specifically, in the present embodiment, the second connection portions 52 are L-shaped structures, and the number of the second connection portions 52 is 3. In the embodiment shown in fig. 2, the first connection portion 51 is connected to the main system frame 40, the second connection portion 52 is connected to the notch 11, and accordingly, the first connection portion 51 may be connected to the notch 11, and the second connection portion 52 may be connected to the main system frame 40.
Further, the number of the second connecting parts 52 may be other, and it is only required that the fundamental frequency of the flexible connecting part 50 is greater than 400Hz, but the difference from 2000Hz is larger, such as 600Hz, or 800 Hz. Still alternatively, the size of each second connection part 52 may be enlarged to reduce the number of second connection parts 52, or the size of each second connection part 52 may be reduced to increase the number of second connection parts 52.
Alternatively, in another embodiment of the present utility model, the main system frame 40 is a flexible main system frame to concentrate both stresses and deformations on the main system frame 40 for release in the event that the optical main system is subjected to complex loads.
Specifically, as shown in fig. 4, in the present embodiment, the main system frame 40 includes: the frame portion 41 and the plurality of third connecting portions 42, the plurality of third connecting portions 42 are annularly provided along the circumferential direction of the frame portion 41, and each third connecting portion 42 is connected to the frame portion 41 and the main mirror assembly, respectively.
Specifically, in the present embodiment, the frame portion 41 and the plurality of third connecting portions 42 may be made of titanium alloy, so that the main system frame 40 and the plurality of flexible connecting members 50 are integrated, i.e. the structure of the frame portion 41 is the same as that of the main system frame 40, and the structure of the third connecting portion 42 is the same as that of the flexible connecting member 50, and therefore, the specific structure of the third connecting portion 42 will not be described herein.
The optical main system adopting the rigid-flexible matching structure for connection effectively solves the problem that the optical performance index of the main system is obviously deteriorated under the action of various complex environmental loads, greatly improves the environmental adaptability and reliability of the optical main system, and simultaneously reduces the mechanical assembly and optical adjustment difficulty of the optical main system to a certain extent.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. An optical host system employing rigid-flexible mating structure connection, comprising: the lens system comprises a main lens assembly, a secondary lens barrel and a main system frame, wherein the main lens assembly and the secondary lens assembly are respectively arranged at two ends of the secondary lens barrel and are rigidly connected with the secondary lens barrel;
The main system frame is sleeved outside the secondary lens barrel and is flexibly connected with the main lens assembly, so that after the environmental condition of the optical main system changes, load stress and deformation are transmitted to a flexible connection part for release, and the relative position between the main lens assembly and the secondary lens assembly is unchanged.
2. The optical host system of claim 1, wherein the host system frame and the host mirror assembly are connected by a plurality of flexible connectors.
3. The optical host system of claim 1, wherein the host system frame is a flexible host system frame.
4. The optical host system of claim 2, wherein each of the flexible connectors has a bending portion, and two ends of the flexible connector are respectively connected to the host system frame and the host mirror assembly.
5. The optical host system of claim 4 wherein each of the flexible connectors comprises: the first connecting parts and the second connecting parts are arranged in parallel along the extending direction of the length of the first connecting parts, and each second connecting part is provided with the bending part;
Wherein one of the first connection portion and the second connection portion is connected with the main system frame, and the other is connected with the main mirror assembly.
6. The optical host system of claim 4, wherein the host mirror assembly comprises:
The main lens plate is rigidly connected with the secondary lens barrel and is connected with the main system frame through the flexible connecting piece;
And the main mirror is rigidly connected with the main mirror plate.
7. The primary optic system of claim 6 wherein the primary optic plate has opposed first and second surfaces, the first surface being coupled to the secondary optic tube and the second surface being circumferentially provided with a plurality of notches, each of the notches being coupled to one of the flexible coupling members.
8. An optical host system connected by a rigid-flexible mating structure according to claim 3, wherein the host system frame comprises:
a frame part sleeved outside the secondary lens barrel;
The third connecting parts are annularly arranged along the circumferential direction of the frame part, and each third connecting part is connected with the frame part and the main mirror assembly respectively.
9. The optical host system of claim 2 wherein the flexible connection is a titanium alloy flexible connection.
10. The primary optical system of claim 1, wherein the secondary mirror assembly comprises:
a secondary lens base rigidly connected with the secondary lens barrel;
And the secondary mirror is rigidly connected with the secondary mirror seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323251981.0U CN221101128U (en) | 2023-11-30 | 2023-11-30 | Optical main system connected by rigid-flexible matching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323251981.0U CN221101128U (en) | 2023-11-30 | 2023-11-30 | Optical main system connected by rigid-flexible matching structure |
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| Publication Number | Publication Date |
|---|---|
| CN221101128U true CN221101128U (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323251981.0U Active CN221101128U (en) | 2023-11-30 | 2023-11-30 | Optical main system connected by rigid-flexible matching structure |
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| CN (1) | CN221101128U (en) |
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2023
- 2023-11-30 CN CN202323251981.0U patent/CN221101128U/en active Active
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