Elastic fixing plate for end face of optical lens

Abstract

An optical lens end face elastic fixing plate comprises a fixing plate body, the fixing plate body is annular and comprises elastic cantilevers, fixing blocks and fixing holes, the multiple elastic cantilevers are distributed at equal intervals along the circumference of an inner ring of the fixing plate body, the fixing blocks are arranged on one sides of the free ends of the elastic cantilevers, and the fixing holes are formed in the fixing blocks. The multiple fixing holes are formed in the fixing plate body at equal intervals, the fixing blocks are bent downwards, the pressing faces, making contact with the end faces of the lenses, of the fixing blocks are flat faces, and the horizontal height of the pressing faces, making contact with the end faces of the lenses, of the fixing blocks is smaller than that of the lower surface of the fixing plate body. The horizontal height of the pressing surface where the fixing block is contacted with the end face of the lens is lower than the horizontal height of the lower surface of the fixing plate body, so that the lens is firmly fixed in the lens mounting hole while the end face of the lens is lower than the surface of the fixing plate; corners of the fixing blocks are subjected to rounding treatment, so that a coating film on the surface of the lens is prevented from being scratched; the pressure applied to the lens end face by the fixing block pressing surface is consistent, the lens surface type does not change, and the quality of laser beams is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to optical lens installation technical field, concretely relates to a kind of optical lens end face elastic fixing plate. BACKGROUND

[0002] In the fixing of lens in laser or laser light path is crucial, because laser has high coherence, directionality and monochromaticity, the precision and stability of optical element in optical path (especially lens) are extremely high, if lens is not fixed well, it can lead to the propagation direction of laser beam changes, beam quality drops, energy loss increases and other problems, thereby affecting the performance of entire laser system.

[0003] In prior art, common lens fixing mode is end face pressure ring type, side edge top screw fixing, end face three-point elastic lens pressing fixing. Among them, end face three-point elastic lens pressing fixing mode has the least influence on lens surface type and the best reflected beam quality, but the thickness of lens and the fixing hole depth of lens fixing plate must be matched during the installation process of end face three-point elastic lens pressing, if the thickness of lens is less than the fixing hole depth of lens fixing plate, the fixing point of elastic three-point pressing plate cannot contact lens, cannot exert fixing force on the end face of lens, at this time, end face fixing fails, so end face three-point elastic lens pressing fails, thereby lens is not fixed well, finally affecting the performance of entire laser system. UTILITY MODEL CONTENT

[0004] In view of the problems in the background art, the utility model researches and designs a kind of optical lens end face elastic fixing plate, which aims to provide a kind of optical lens end face elastic fixing plate, which can firmly fix the lens in the lens mounting hole when the end face of the lens is lower than the surface of the fixing plate, and stabilize the lens surface type.

[0005] The technical solution of the utility model:

[0006] A kind of optical lens end face elastic fixing plate, including fixed plate body, the fixed plate body is annular, the fixed plate body includes elastic cantilever, fixed block, fixed hole, multiple elastic cantilevers are distributed along the circumference of inner ring of fixed plate body equidistantly, the free end side of each elastic cantilever is provided with fixed block, multiple fixed holes are equidistantly arranged on fixed plate body, the fixed block is bent downward and the pressing surface of fixed block and lens end face contact is flat surface, the horizontal height of the pressing surface of fixed block and lens end face contact is lower than the horizontal height of the lower surface of fixed plate body.

[0007] Preferably, the fixed hole is arranged on the fixed plate body between adjacent elastic cantilevers, and the fixed connection between the fixed plate body and the lens seat is realized by sequentially penetrating the fixed hole of the fixed plate body and the lens seat through the bolt.

[0008] Preferably, the fixed block is arranged on the free end side of the elastic cantilever close to the center of the fixed plate body.

[0009] Preferably, the fixed block is bent downward by 90°.

[0010] Preferably, the edges of the fixed block are chamfered to prevent scratching the coating on the lens surface.

[0011] Preferably, the material of the elastic cantilever is metal alloy or engineering plastic.

[0012] The utility model discloses the beneficial effect: the utility model discloses reasonable structure, novel design is set up fixed block and is bent downward by 90°, and the horizontal height of the pressing surface of the fixed block after bending and the lens end surface contact is lower than the horizontal height of the lower surface of fixed plate body, thereby the height difference of lens surface and fixed plate body is absorbed, guarantees the lens end surface to be lower than the fixed plate surface, and lens can also be fixed firmly in lens mounting hole, the edges of the fixed block are chamfered to prevent scratching the coating on the lens surface, and the elastic cantilever is set up, and even when the elastic cantilever deforms, the fixed block pressing surface can still be free to adjust the position of the lens contact surface, thereby making the pressure applied to the lens end surface consistent, and the lens will not change the face type due to uneven stress, thereby guaranteeing the quality of laser beam, and having very high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses the three -dimensional structure schematic diagram provided for the embodiment of the utility model;

[0014] Figure 2 The utility model discloses the main view structure schematic diagram provided for the embodiment of the utility model;

[0015] Figure 3 The utility model discloses the left view structure schematic diagram provided for the embodiment of the utility model;

[0016] Figure 4 The utility model discloses the structure schematic diagram of fixed plate installation in the lens seat;

[0017] Figure 5 The utility model discloses the section structure schematic diagram of lens placement in the lens seat.

[0018] Wherein: 1, fixed plate body, 2, elastic cantilever, 3, fixed block, 3-1, pressing surface, 4, fixed hole, 5, bolt, 6, lens seat, 7, lens, 8, lens mounting hole. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0020] Example

[0021] like Figures 1-3 As shown, an elastic fixing plate for the end face of an optical lens includes a fixing plate body 1, which is annular and includes elastic cantilevers 2, fixing blocks 3, and fixing holes 4. The three elastic cantilevers 2 are equidistantly distributed along the circumference of the inner ring of the fixing plate body 1, and an identical fixing block 3 is provided on one side of the free end of each elastic cantilever 2. The three fixing holes 4 are equidistantly arranged on the fixing plate body 1. The three fixing blocks 3 are bent downward and the pressure surface 3-1 where the fixing block 3 contacts the end face of the lens is a flat surface. The horizontal height of the pressure surface 3-1 where the fixing block 3 contacts the end face of the lens is lower than the horizontal height of the lower surface of the fixing plate body 1.

[0022] like Figure 1 、 Figure 2 、 Figure 4 As shown, in this embodiment, the fixing holes 4 are provided on the fixing plate body 1 between adjacent elastic cantilevers 2, and the fixing plate body 1 and the lens seat 6 are fixedly connected by bolts 5 passing through the fixing holes 4 on the fixing plate body 1 and the lens seat 6 in sequence.

[0023] like Figure 1 、 Figure 2 、 Figure 4 As shown, in this embodiment, each fixing block 3 is correspondingly arranged on the side surface of the free end of the elastic cantilever 2 close to the center of the fixing plate body 1.

[0024] like Figure 1 、 Figure 4 As shown, in this embodiment, each fixing block 3 is bent downward by 90°.

[0025] like Figure 1 、 Figure 2 、 Figure 4 As shown, in this embodiment, the pressing surface 3 - 1 of the fixing block 3 in contact with the end face of the lens is rectangular.

[0026] like Figure 1 、 Figure 4 As shown, in this embodiment, the corners of each fixing block are rounded to prevent scratches on the surface coating of the lens 7.

[0027] In this embodiment, the elastic cantilever 2 is made of one of beryllium bronze, stainless steel alloy, polyetheretherketone, and polycarbonate.

[0028] Specific use process: Figure 1 、 Figure 4 Figure 4 Figure 5As shown, in actual use, the lens is placed on the annular table of the lens seat mounting hole, the bolt 5 is sequentially threaded through the fixing hole 4 on the lens seat 6 and the fixing plate body 1 to fix the fixing plate body 1 on the lens seat, the rectangular pressing surface 3-1 at the bottom of the three fixing blocks 3 is in contact with the end face of the lens, and consistent pressure is applied to the end face of the lens 7; at this time, even if the end face of the lens is lower than the surface of the fixing plate body 1, the function of fixing the lens by the fixing plate body 1 can be realized. In the utility model, the fixing block 3 is bent downward by 90 degrees, the pressing surface 3-1 of the fixing block 3 in contact with the end face of the lens 7 is lower than the horizontal height of the lower surface of the fixing plate body 1 after bending, so that the height difference between the surface of the lens 7 and the fixing plate body 1 is absorbed, and the lens 7 can be firmly fixed in the lens mounting hole 8 while ensuring that the end face of the lens 7 is lower than the surface of the fixing plate; the edges and corners of the fixing block 3 are rounded to prevent scratching the surface coating of the lens 7; the elastic cantilever 2 is provided, so that the position of the fixing block pressing surface 3-1 in contact with the lens 7 can be freely adjusted even when the elastic cantilever is deformed, so that the pressure applied to the end face of the lens 7 is consistent, and the lens 7 will not change the surface shape due to uneven stress, so as to ensure the quality of the laser beam, and has high practical value.

[0029] In summary, the utility model achieves the expected effect.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above, however, it is not used to limit the utility model, any person skilled in the art, within the scope of the technical scheme of the utility model, can make some changes or modifications to the equivalent embodiments of equivalent changes by using the disclosed technical content, as long as it does not deviate from the technical scheme of the utility model, and any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, still belongs to the scope of the technical scheme of the utility model.

Claims

1. An optical lens end face elastic fixing plate, characterized in that: The fixing plate body is annular, and comprises elastic cantilever arms, fixing blocks and fixing holes.

2. The optical lens end face elastic fixing plate according to claim 1, characterized in that: The fixing holes are arranged on the fixing plate body between the adjacent elastic cantilever arms.

3. The optical lens end face elastic fixing plate according to claim 1, characterized in that: The fixing blocks are arranged on the side surface of the free end of the elastic cantilever arm close to the center of the fixing plate body.

4. The optical lens end face elastic fixing plate according to claim 1, characterized in that: The fixing blocks are bent downward by 90°.

5. The optical lens end face elastic fixing plate according to claim 1, characterized in that: The edges and corners of the fixing blocks are rounded to prevent scratching the coating on the surface of the lens.

6. The optical lens end face elastic fixing plate according to claim 1, characterized in that: The material of the elastic cantilever arms is metal alloy or engineering plastic.

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