CN218037505U

CN218037505U - Lens bearing structure

Info

Publication number: CN218037505U
Application number: CN202222175047.4U
Authority: CN
Inventors: 林剑春; 刘海成
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-13
Anticipated expiration: 2032-08-18

Abstract

The utility model relates to a lens bearing structure, including the lens holder, be provided with the lens through-hole that holds lens on the lens holder, be provided with a plurality of flexible supporting component who is used for supporting lens around the lens through-hole, flexible supporting component includes base, gasket, fixed subassembly, shell fragment subassembly and radial supporting component, the base lower extreme is connected to the lens holder, the base upper end is fixed through fixed subassembly shell fragment subassembly, shell fragment subassembly is including a vertical shell fragment, through vertical shell fragment inserts radial supporting component's logical groove supports radial supporting component, radial supporting component is close to one side of lens through-hole is connected with the gasket, through the flexible support of lens is realized to the side of gasket extrusion lens. The utility model has the characteristics of simple structure, the dress is transferred conveniently, and the processing technology requirement is low, and the range of application is wide, and flexible supporting component can effectual improvement lens heat altered shape, improves the precision of lens.

Description

Lens bearing structure

Technical Field

The utility model relates to an optical lens field mainly relates to a lens bearing structure.

Background

In low temperature infrared imaging systems, non-linear changes in the dimensions of the optical elements may be caused as the temperature decreases. In order to improve the surface shape accuracy and the position accuracy of the optical lens, obtain better imaging quality and reduce the deformation of the optical lens caused by temperature change, a correspondingly reasonable flexible supporting structure of the optical lens needs to be designed.

At present, most of the used flexible supporting structures are frame-type structures, i.e. the lens is mounted on the lens holder, and the flexible structure is processed on the lens holder, so as to counteract the thermal stress generated by the lens and reduce the deformation of the lens. However, the accuracy of the lens surface shape is influenced by the processing error of the lens base, if the error of a single through groove is too large, the whole lens base is scrapped, the cost is high, and some flexible supporting structures have the defects of difficult processing technology, and can only be widely applied to the support of small-caliber lenses.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that the flexible bearing structure machining precision of optical lens among the prior art requires that the high range of application is little, the utility model provides a lens bearing structure.

10. The utility model adopts the following technical scheme: the utility model provides a lens supporting structure, includes the lens seat, be provided with the lens through-hole that holds lens on the lens seat, be provided with a plurality of flexible supporting component that are used for supporting lens around the lens through-hole, flexible supporting component includes base, gasket, fixed subassembly, shell fragment subassembly and radial supporting component, the base lower extreme is connected to the lens seat, the base upper end is fixed through fixed subassembly shell fragment subassembly, shell fragment subassembly is including a vertical shell fragment, through vertical shell fragment inserts radial supporting component's logical groove supports radial supporting component, radial supporting component is close to one side of lens through-hole is connected with the gasket, through the flexible support of lens is realized to the side of gasket extrusion lens.

Preferably, the flexible support member is threadedly connected to the lens holder.

Preferably, one end of the gasket, which is close to the lens through hole, is an inner end, the other end of the gasket is an outer end, the surface of the inner end is an arc surface, and the surface of the outer end is a plane.

Preferably, the front surface and the side surface of the base are respectively provided with a rectangular through hole.

Preferably, the upper end of the fixing assembly is provided with an upper elastic sheet, a limiting elastic sheet is arranged below the upper elastic sheet, the elastic sheet assembly is provided with a rear end elastic sheet, and when the fixing assembly fixes the elastic sheet assembly, the rear end elastic sheet is inserted between the upper elastic sheet and the limiting elastic sheet.

Preferably, through holes are formed in two ends of the fixing component, and the fixing component penetrates through the through holes through bolts to be connected with the elastic sheet component.

Preferably, a plurality of glue injection grooves are formed in the inner surface and the outer surface of the vertical elastic sheet and are formed in the vertical direction.

Preferably, the radial support component is provided with a front end through groove and a rear end through groove, and the vertical elastic sheet is inserted into the rear end through groove of the radial support component to support the radial support component.

Preferably, the surface of the radial support assembly to which the shim is connected is provided with a flexible hinge.

The utility model discloses following beneficial effect has: the utility model has the characteristics of simple structure, the dress is transferred conveniently, and the processing technology requires lowly, and the range of application is wide, and flexible supporting component can provide axial flexible support and dual radial flexible support, and flexible supporting structure component's gasket material is close with lens material linear expansion coefficient moreover, can effectual improvement lens heat altered shape precision, improvement lens shape of face precision and positioning accuracy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of a lens holder according to the present invention;

fig. 3 is a schematic view of the flexible support assembly of the present invention;

fig. 4 is a schematic view of the gasket of the present invention;

fig. 5 is a schematic view of the base of the flexible support assembly of the present invention;

fig. 6 is a schematic view of the fixing assembly of the present invention;

fig. 7 is a schematic view of the elastic sheet assembly of the present invention;

fig. 8 is a schematic view of the radial support assembly of the present invention.

In the figure: 1-a lens holder; 11-a lens through hole; 12-a threaded hole; 13-connecting hole; 2-a gasket; 21-an outer end face; 22-inner end face; 3-a base; 31-a threaded through hole; 32-side rectangular through holes; 33-a rectangular through hole on the front side; 34-lens holder attachment hole; 4-a fixing component; 41-base attachment holes; 42-upper spring plate; 43-a limit spring plate; 44-spring assembly attachment holes; 5-a spring plate component; 51-glue injection groove; 52-through groove; 53-vertical shrapnel; 54-horizontal spring plate; 55-a rear end spring plate; 56-inclined plane; 57-fixing the assembly attachment holes; 6-a radial support assembly; 61-a front end through groove; 62-a flexible hinge; 63-a rear end through groove; 7-lens.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Examples

The following is only the preferred embodiment of the present invention, the protection scope of the present invention is not limited to the following embodiments, all the technical solutions belonging to the present invention belong to the protection scope of the present invention.

11. Referring to the attached drawing 1 of the specification, a lens supporting structure comprises a lens base 1, a lens through hole 11 for accommodating a lens is formed in the lens base 1, a plurality of flexible supporting assemblies for supporting the lens are arranged around the lens through hole 11, each flexible supporting assembly comprises a base 3, a gasket 2, a fixing assembly 4, an elastic sheet assembly 5 and a radial supporting assembly 6, the lower end of each base 3 is connected to the lens base, the elastic sheet assembly 5 is fixed at the upper end of each base through the fixing assembly 4, each elastic sheet assembly 5 comprises a vertical elastic sheet 53, the radial supporting assembly 6 is supported by a through groove formed by inserting the vertical elastic sheet 53 into the radial supporting assembly 6, one side, close to the lens through hole 11, of the radial supporting assembly 6 is connected with the gasket 2, and the gasket 2 extrudes the side face of the lens to realize flexible supporting of the lens.

Referring to fig. 2 of the specification, the lens holder 1 is of a circular ring structure as a whole. The lens holder 1 has a lens through hole 11 in the middle. The periphery of the bottom surface of the lens holder 1 is also provided with annular uniformly distributed threaded holes 12, and the threaded holes 12 are connected with the flexible supporting component in a threaded manner. An annular connecting hole 13 is processed on the outer end face of the upper circular ring and is used for connecting the lens holder with an external fixed object so as to fix the arrangement position of the lens holder 1.

Referring to the attached drawing 3 of the specification, the flexible supporting component mainly comprises a transparent gasket 2, a base 3, a fixing component 4, a spring plate component 5 and a radial supporting component 6. The radial support assembly 6 and the elastic sheet assembly 5 are matched to provide double radial flexible supports, and meanwhile, the elastic sheet assembly 5 and the fixing assembly 4 are matched to provide axial flexible supports. The base adopts lightweight design, also can provide certain radial and axial flexible support. The flexible support member is connected to the lens holder 1 by a screw thread.

Referring to fig. 4 of the specification, the outer end 21 of the gasket 2 is perpendicularly cut to have a plane surface having the same size as the radial support member, and is bonded to the radial support member by an oxide adhesive. The inner end 22 of the spacer is formed into an arc shape, the surface of the inner end is an arc surface, and the diameter of the inner circle is consistent with that of the lens. The material of the gasket is similar to the thermal expansion coefficient of the lens material, so that the effect of reducing the thermal stress generated by the lens can be achieved, and the surface shape precision of the lens is improved.

Referring to the attached fig. 5, the base 3 is an L-shaped rectangular parallelepiped, and a threaded through hole 31 is formed at the upper part thereof for connecting with the fixing component 4. The lower part of the connecting and fixing component is respectively provided with a side rectangular through hole 32 and a front rectangular through hole 33 on the front and the side, thus playing the roles of reducing weight and providing flexible support. A threaded through-hole 34 is also machined in the lower projecting end face for connection with the lens holder 1.

Referring to fig. 6 of the specification, the fixing assembly 4 is a bent elastic sheet, a threaded base connecting hole 41 is formed in the front surface of the fixing assembly for fixing with the base 3, and the upper elastic sheet 42 can fix the rear end elastic sheet 55 of the elastic sheet assembly 5 in the Z direction and can be matched with the elastic sheet assembly 5 to provide axial flexible support. The horizontal limiting elastic sheet 43 mainly limits the elastic sheet assembly 5, and prevents the elastic sheet assembly from sliding downwards. When the fixing assembly 4 fixes the elastic piece assembly 5, the rear end elastic piece 55 is inserted between the upper elastic piece 42 and the limiting elastic piece 43. Through holes 44 are processed on two sides of the fixing component 4, and the fixing component is connected with the elastic sheet component 5 through bolts which are not fixed during connection, so that the elastic sheet component is ensured to have a certain axial degree of freedom. The fixing component 4 mainly functions in fixing and limiting, and can also be matched with the elastic sheet component 5 to provide flexible support.

Referring to the attached figure 7 of the specification, the elastic sheet assembly 5 is approximately U-shaped as a whole, and a glue injection groove 51 is dug at the joint of the elastic sheet assembly and the radial support assembly 6, so that the elastic sheet assembly is convenient to bond and fix. A through slot 52 is machined below, and the vertical spring plate 53 and the through slot 52 can provide radial flexible support. The horizontal spring 54 provides an axial flexible support, the rear spring 55 contacts with the spring of the fixing component 4, the inclined surface 56 can be used as a lever, and the two ends are respectively a lens and the springs which contact with each other. The elastic sheets on both sides are processed with fixing component connecting holes 57 for bolt connection with the fixing component. The whole elastic sheet assembly is approximately U-shaped, and the vertical part is grooved to provide radial flexible support. Leverage is utilized to provide axially flexible support in cooperation with the fixed component 4.

Referring to the attached figure 8 of the specification, a front end through groove 61 is machined at the front end of the radial support assembly 6, an arc-shaped flexible hinge 62 is machined on the outer wall of the radial support assembly to enable the radial support assembly 6 to be flexible and used for offsetting deformation, a rear end through groove 63 is also machined at the rear end of the radial support assembly, the size of the rear end through groove is the same as that of an elastic sheet, and the vertical elastic sheet 53 is inserted into the rear end through groove 63 of the radial support assembly to support the radial support assembly 6. The surface of the radial support assembly to which the shim is attached is provided with a flexible hinge 62. The function of the radial support assembly 6 is to provide radially flexible support. Meanwhile, the gasket bonded with the lens seat is made of a material with a coefficient of linear expansion similar to that of the lens material, so that the thermal stress caused by the difference of the coefficient of linear expansion between the lens and the lens seat can be reduced, and the influence of the stress on the lens can be reduced.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Claims

1. The utility model provides a lens supporting structure, its characterized in that includes the lens seat, be provided with the lens through-hole that holds lens on the lens seat, be provided with a plurality of flexible supporting component that are used for supporting lens around the lens through-hole, flexible supporting component includes base, gasket, fixed subassembly, shell fragment subassembly and radial supporting component, the base lower extreme is connected to the lens seat, the base upper end is fixed through fixed subassembly shell fragment subassembly, shell fragment subassembly is including a vertical shell fragment, through vertical shell fragment inserts radial supporting component's logical groove supports radial supporting component, radial supporting component is close to one side of lens through-hole is connected with the gasket, through the flexible support of lens is realized to the side that gasket extruded lens.

2. The lens support structure of claim 1, wherein the flexible support member is threadably connected to the lens housing.

3. The lens support structure of claim 1, wherein the spacer has an inner end and an outer end, the inner end being close to the lens through hole, the inner end having a circular arc surface, and the outer end having a flat surface.

4. The lens support structure of claim 1, wherein the front and side surfaces of the base are respectively provided with rectangular through holes.

5. The lens supporting structure of claim 1, wherein an upper spring is disposed at an upper end of the fixing assembly, a limiting spring is disposed below the upper spring, the spring assembly is provided with a rear spring, and the rear spring is inserted between the upper spring and the limiting spring when the fixing assembly fixes the spring assembly.

6. The lens support structure of claim 5, wherein the fixing member has through holes at both ends thereof, and is connected to the spring member by bolts passing through the through holes.

7. The lens support structure of claim 1, wherein the vertical spring has a plurality of glue injection grooves formed on both the inner and outer surfaces thereof, and the glue injection grooves are formed along a vertical direction.

8. The lens support structure of claim 1, wherein the radial support assembly is provided with a front end channel and a rear end channel, and the radial support assembly is supported by the vertical spring plate being inserted into the rear end channel of the radial support assembly.

9. The lens support structure of claim 8, wherein the surface of the radial support assembly to which the spacer is connected is provided with a flexible hinge.