Optical lens bracket

Abstract

The invention particularly relates to an optical lens bracket, and belongs to the technical field of optical systems. Comprising a vertical plate and a bottom plate, the vertical plate is used for installing an optical lens assembly, the bottom plate is provided with a locking assembly used for fastening the bottom plate to a supporting table top, and the bottom plate is fixedly arranged at the bottom of the vertical plate; the adjusting assembly is located beside the vertical plate, one end of the adjusting assembly is used for being connected with a supporting table top, and the other end of the adjusting assembly is connected with the bottom plate; the adjusting assembly comprises a ball groove fixing piece and a ball head rod piece, and a ball head of the ball head rod piece is arranged in a spherical groove of the ball groove fixing piece in a matched mode. In the using process, the distance between the bottom plate and the supporting table top is adjusted by changing the relative position between the ball head rod piece and the bottom plate. The problem of pitching adjustment of the large-aperture optical mirror bracket can be solved, the reliability of the large-aperture optical mirror bracket can be improved, and the large-aperture optical mirror bracket has the advantages of being simple in structure, wide in application scene and mature in processing technology.

Description

Technical Field

[0001] The invention belongs to the technical field of optical systems, and in particular relates to an optical frame. Background Art

[0002] As a basic component in the adaptive optical system, the optical frame is used to support optical elements, adjust the direction of the light beam, and achieve fast and accurate positioning of the light beam. It is currently widely used in laboratories and optical equipment and instruments. In the optical path debugging of the adaptive optical system, it is usually necessary to adjust the pitch angle of the optical frame. Rotating the adjustment screw drives the optical frame to move up and down to change the pitch angle of the optical frame. After reaching the required pitch angle, the optical path debugging is completed. Traditional optical frames mostly use adjustment screws and locking screws to adjust and lock the pitch, that is, the optical frame is adjusted by rotating the adjustment screw, and then locked with the locking screw.

[0003] In order to correct the quality of higher power and larger aperture light beams, larger aperture optical mirrors and larger aperture optical frames are usually used. For example, a D400mm aperture optical frame assembly has a mass of about 120-200kg, depending on the material. Traditional adjustment screws are very likely to develop point contact with the connecting platform during use. As the mass and size of the optical frame increase, its own weight can easily cause slight changes in the azimuth angle of the frame, and the adjustment screws are prone to wear and even damage after long-term use. At the same time, there is a lot of jitter in the adaptive optical system during operation, which can easily cause the traditional adjustment screws and locking screws to loosen, causing a huge change in the angle of the optical path.

[0004] As a crucial optical frame in the optical system, in order to correct the quality of higher power and larger aperture light beams, larger aperture optical mirrors and larger aperture optical frames are used, which puts higher requirements on the stability and vibration resistance of the frame, otherwise it will directly affect the output performance of the optical system. Summary of the invention

[0005] The purpose of the present invention is to provide an optical frame, in view of the problem that the adjusting screw is easily loosened, worn or even damaged in the pitch mechanism of an optical frame that adopts the cooperation of an adjusting screw and a locking screw for pitch adjustment and locking. The optical frame can eliminate the difficulty of pitch adjustment of large-diameter optical frames, improve the reliability of large-diameter optical frames, and has the advantages of simple structure, wide application scenarios, and mature processing technology.

[0006] The specific technical solution is: an optical frame, comprising a vertical plate and a bottom plate, wherein the vertical plate is used to install the optical lens assembly, the bottom plate is provided with a locking assembly for fastening the bottom plate to the supporting table, and the bottom plate is fixed to the bottom of the vertical plate;

[0007] It also includes an adjustment component located beside the vertical plate, one end of the adjustment component is used to connect with the support table surface, and the other end is connected with the base plate; the adjustment component includes a ball groove firmware and a ball head rod, and the ball head of the ball head rod is adapted to the spherical groove of the ball groove firmware; when in use, the distance between the base plate and the support table surface is adjusted by changing the relative position between the ball head rod and the base plate.

[0008] Furthermore, a groove for installing the ball slot fixture is provided on the surface of the base plate that contacts the support surface, and a threaded hole that cooperates with the thread of the ball head rod is provided on the other side surface of the base plate; when in use, the ball head end of the ball head rod abuts against the groove of the ball slot fixture, and the height of the base plate is raised on the support surface through the threaded transmission between the ball head rod and the base plate.

[0009] Furthermore, the groove end of the ball slot firmware is provided with a flange structure, and the inner wall of the open end of the slot is provided with an annular protrusion structure threadedly matched with the flange structure, and the ball slot firmware is screwed so that the flange structure can be located between the annular protrusion structure and the bottom of the slot.

[0010] Furthermore, the ball groove fixture is threadedly matched with the inner wall of the groove, and in the thread on the circumferential side of the ball groove fixture, the helix lead angle is greater than the friction angle.

[0011] Furthermore, the ball slot fixture is sleeved in the slot, and the ball slot fixture and the slot can slide relatively along the opening direction of the slot.

[0012] Furthermore, a guiding mechanism is provided between the ball slot fixture and the slot, and the guiding mechanism includes a slide groove arranged on the inner wall of the slot and a slider arranged on the ball slot fixture, or the guiding mechanism includes a slider arranged on the inner wall of the slot and a slide groove arranged on the ball slot fixture.

[0013] Furthermore, a receiving cavity is provided on the surface of the base plate for contacting the supporting table surface, and the ball slot fixture is installed in the receiving cavity; when in use, the ball head end of the ball head rod abuts against the groove of the ball slot fixture, and the other end is used to abut against the supporting table surface, and the ball head rod is a telescopic rod.

[0014] Furthermore, there are at least two adjusting components, and all the adjusting components are distributed on both sides of the vertical plate.

[0015] Furthermore, a circular through hole is provided on the base plate, and the locking assembly includes a spring washer, a screw washer and a locking screw adapted to the circular through hole; when in use, the locking screw is used to be fastened to the support table after passing through the spring washer, the screw washer and the circular through hole in sequence.

[0016] Furthermore, reinforcing plates are fixedly provided at both ends of the vertical plate, and hanging rings are fixedly provided on the outer plate surfaces of the reinforcing plates.

[0017] The beneficial effects of the present invention are:

[0018] In the optical frame provided by the present application, the bottom plate is fixedly arranged at the bottom of the vertical plate. When the optical frame provided by the present application is used, the bottom plate is placed on the support table, the optical mirror assembly is installed on the vertical plate, one end of the adjustment assembly is connected to the support table, and the other end is connected to the bottom plate, and the distance between the bottom plate and the support table can be adjusted by changing the relative position between the adjustment assembly and the bottom plate. The adjustment assembly in the present application is located beside the vertical plate, that is, when in use, the adjustment assembly is located on one side of the optical mirror assembly on the vertical plate, so that when the distance between the bottom plate and the support table is adjusted by the adjustment assembly, the pitch angle adjustment of the optical mirror assembly can be realized, and then the relative position of the bottom plate and the support table is locked by the locking assembly on the bottom plate.

[0019] In addition, the adjustment assembly in the present application includes a ball head rod and a ball slot fixture, and during the pitch angle adjustment process of the optical lens assembly, the ball head end of the ball head rod always abuts against the groove of the ball slot fixture, and the two always maintain surface contact. Compared with the traditional method of adjusting the pitch angle of the optical lens assembly by adjusting screws, the present application avoids the "point-to-surface" contact connection form, which can reduce the wear of structural parts, improve the stability of the optical frame, and extend the service life of the optical frame. The optical frame provided by the present application has a streamlined structure, no difficulty in installation and adjustment, a wide range of application scenarios, mature processing technology, and good processing and assembly processability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1.

[0021] Figure 2 It is a front view schematic diagram of Example 1.

[0022] Figure 3 for Figure 2 AA section diagram in.

[0023] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part B in FIG.

[0024] Figure 5 This is a schematic diagram of the first structure of the connection between the ball head rod and the ball groove hardware in Example 1.

[0025] Figure 6 This is a second structural schematic diagram of the connection between the ball head rod and the ball groove hardware in Example 1.

[0026] Figure 7Schematic diagram of the structure of the ball slot hardware and the base plate in Example 3.

[0027] Figure 8 This is a schematic diagram of the structure of the adjustment component and the base plate in Example 4.

[0028] Reference numerals:

[0029] 1-vertical plate, 11-optical lens assembly, 2-bottom plate, 21-locking assembly, 211-spring washer, 212-screw washer, 213-locking screw, 22-slot, 23-threaded hole, 24-flange structure, 25-annular protrusion structure, 26-slider, 27-slide groove, 28-accommodating cavity, 29-circular through hole, 3-adjusting assembly, 31-ball groove fixture, 32-ball head rod, 4-reinforcement plate, 5-lifting ring, 6-transverse fixing plate, 7-connecting screw, 8-connecting screw washer. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in each embodiment of the present invention described below can be combined with each other as long as they do not conflict with each other. To achieve the above-mentioned purpose, the present invention adopts the following technical scheme.

[0031] Example 1

[0032] In order to address the problem that the adjustment screws in the pitch mechanism of an optical frame that uses an adjustment screw and a locking screw to perform pitch adjustment and locking are easily loosened, worn, or even damaged, this embodiment 1 provides an optical frame that can eliminate the difficulty in pitch adjustment of large-diameter optical frames, improve the reliability of large-diameter optical frames, and has the advantages of simple structure, wide application scenarios, and mature processing technology.

[0033] like Figures 1 to 6 As shown, the optical frame provided in this embodiment 1 includes a vertical plate 1 and a bottom plate 2. The bottom plate 2 is fixed to the bottom of the vertical plate 1. Preferably, the plate surface of the vertical plate 1 and the plate surface of the bottom plate 2 can be arranged perpendicular to each other.

[0034] When in use, the vertical plate 1 in this embodiment 1 is used to install the optical mirror assembly 11, and the bottom plate 2 in this embodiment 1 is used to be placed on the support table. It should be understood that the support table described in this embodiment 1 includes but is not limited to the connection platform table.

[0035] In this embodiment 1, the connection method between the vertical plate 1 and the optical mirror assembly 11 is not limited. Figure 2 , Figure 3As shown, the optical mirror assembly 11 can be fastened to the vertical plate 1 by means of connecting screws 7 and connecting screw washers 8 .

[0036] like Figure 1 , Figure 3 and Figure 4 As shown, the present embodiment 1 further comprises an adjustment component 3 located beside the riser 1. It should be understood that the adjustment component 3 located beside the riser 1 means that the adjustment component 3 is located on one side of the optical mirror component 11 on the riser 1 when in use.

[0037] When this embodiment 1 is used, one end of the adjustment component 3 is connected to the support table and the other end is connected to the base plate 2. By changing the relative position between the adjustment component 3 and the base plate 2, the distance between the base plate 2 and the support table can be adjusted, thereby realizing the pitch angle adjustment of the optical mirror assembly 11.

[0038] Furthermore, in order to facilitate fixing the pitch angle of the optical mirror assembly 11 after adjustment, the present embodiment 1 is provided with a locking assembly 21 on the base plate 2, so as to fix the pitch angle of the optical mirror assembly 11 after adjustment by fixing the relative position between the base plate 2 and the supporting table by the locking assembly 21.

[0039] Preferably, if Figure 3 and Figure 4 As shown, the locking assembly 21 may include a spring washer 211, a screw washer 212 and a locking screw 213. A circular through hole 29 adapted to the locking screw 213 is provided on the bottom plate 2 of this embodiment 1. When in use, the locking screw 213 is fastened to the support table after passing through the spring washer 211, the screw washer 212 and the circular through hole 29 in sequence.

[0040] In this embodiment 1, by arranging a spring washer 211 and a screw washer 212 between the nut of the locking screw 213 and the base plate 2, it is possible to avoid the phenomenon that the locking screw 213 becomes loose due to a large amount of shaking during operation of the adaptive optical system, thereby improving the reliability and stability of this embodiment 1.

[0041] In this embodiment 1, the specific number of locking components 21 is not limited, as long as the relative position between the bottom plate 2 and the support table can be stabilized. For ease of implementation, five locking components 21 can be arranged around the bottom plate 2 at intervals.

[0042] The optical frame provided in the first embodiment can be adapted to large-diameter optical mirror components, such as D400mm diameter optical mirror frame components. Depending on the material, the mass of the D400mm diameter optical mirror frame components is generally 120-200kg. Figure 1As shown, in this embodiment 1, reinforcing plates 4 are respectively fixed on both ends of the vertical plate 1, and hanging rings 5 ​​are respectively fixed on the outer plate surface of the reinforcing plates 4. Further, in order to further increase the structural stability and rigidity of this embodiment 1, this embodiment 1 can also arrange a horizontal fixing plate 6 above the vertical plate 1 and the reinforcing plate 4. More preferably, as Figure 1 As shown, the top surface of the transverse fixing plate 6 and the bottom surface of the bottom plate 2 can be made parallel to each other, so that after the bottom plate 2 is placed flat on the support table, the angle can be quickly aligned through the transverse fixing plate 6.

[0043] like Figure 3 and Figure 4 As shown, the adjustment component 3 of this embodiment 1 includes a ball slot fixture 31 and a ball head rod 32, and the ball head end of the ball head rod 32 is adapted to the spherical groove of the ball slot fixture 31; when in use, the distance between the base plate 2 and the supporting table surface is adjusted by changing the relative position between the ball head rod 32 and the base plate 2.

[0044] During the pitch angle adjustment process of the optical mirror assembly 11, the ball end of the ball head rod 32 always abuts against the groove of the ball groove fixture 31, and the two always maintain surface contact. Compared with the traditional method of adjusting the pitch structure of the optical mirror assembly 11 by adjusting screws, the optical frame provided in this embodiment 1 avoids the "point-to-surface" contact connection form, can reduce the wear of structural parts, improve the stability of the optical frame, and extend the service life of the optical frame. The optical frame provided in this embodiment 1 has a simple structure, no difficulty in installation and adjustment, a wide range of application scenarios, mature processing technology, and good processing and assembly processability.

[0045] Preferably, if Figure 4 As shown, the surface of the bottom plate 2 for contacting with the support surface is provided with a notch 22 for installing the ball slot fixture 31. Specifically, the notch 22 on the bottom plate 2 can be a blind hole, and the opening direction of the notch 22 can be perpendicular to the surface of the bottom plate 2 for contacting with the support surface. The other side surface of the bottom plate 2 is provided with a threaded hole 23 that is threadedly matched with the ball head rod 32. Figure 4 In the view shown, the threaded hole 23 on the bottom plate 2 is connected to the notch 22 on the bottom plate 2. When in use, the ball end of the ball head rod 32 abuts in the notch of the ball slot fixture 31, and the height of the bottom plate 2 is raised on the support surface through the threaded transmission between the ball head rod 32 and the bottom plate 2. It should be understood that when the present embodiment 1 is in use, the lifting process of the bottom plate 2 is that the ball head rod 32 moves relative to the bottom plate 2 in the direction of the ball slot fixture 31 through the threaded transmission, the ball head rod 32 applies a force to the ball slot fixture 31, and the ball end of the ball head rod 32 always abuts against the notch of the ball slot fixture 31. Under the action of the ball head rod 32, the ball slot fixture 31 moves relative to the bottom plate 2 in the direction of the opening of the notch 22 and abuts against the support surface, thereby lifting the bottom plate 2.

[0046] Furthermore, in order to ensure that the ball slot fixture 31 moves downward in parallel and does not fall off the notch 22 on the bottom plate 2, in this embodiment 1, a flange structure 24 may be provided at the end of the groove of the ball slot fixture 31, and an annular protrusion structure 25 threadedly matched with the flange structure 24 is provided in the inner wall of the opening end of the notch 22, and the ball slot fixture 31 is screwed in the notch 22 so that the flange structure 24 is completely located between the annular protrusion structure 25 and the bottom of the notch 22. When in use, the ball slot fixture 31 moves downward in parallel under the action of the ball head rod 32, and the threaded match between the flange structure 24 and the annular protrusion structure 25 prevents the ball slot fixture 31 from falling off the notch 22 on the bottom plate 2.

[0047] In the present embodiment 1, since the adjustment component 3 is located beside the vertical board 1, the distance between the bottom plate 2 and the support table surface is adjusted by the adjustment component 3, so that the optical mirror component 11 on the vertical board 1 can achieve the purpose of pitch adjustment. In order to better adjust the pitch angle of the optical mirror component 11 on the vertical board 1, there can be at least two adjustment components 3 in the present embodiment 1, and all the adjustment components 3 are distributed on both sides of the vertical board 1. Preferably, there can be five adjustment components 3 in the present embodiment 1, two of which are arranged on one side of the vertical board 1, and the other three are arranged on the other side of the vertical board 1.

[0048] Figure 5 (a) and (b) show the structure diagrams of the connection between the ball head rod 32 and the ball slot fixture 31 before and after the base plate 2 is placed flat on the support table and the base plate 2 is lifted by the adjustment component 3. At this time, the axial direction of the ball head rod 32 is parallel to the opening direction of the slot 22. Figure 5 In the view shown in FIG. 1 , the axial direction of the ball head rod 32 is arranged vertically.

[0049] Figure 6 (a) and (b) show the schematic diagrams of the connection between the ball head rod 32 and the ball slot fixture 31 before and after the bottom plate 2 is lifted by the adjustment component 3 when a certain processing error occurs in the threaded hole 23, and the threaded hole 23 and the bottom plate are at a certain angle. At this time, the axial direction of the ball head rod 32 and the opening direction of the slot 22 form a certain angle. The axial direction of the ball head rod 32 is tilted, but the axial direction of the ball slot fixture 31 is still parallel to the opening direction of the slot 22 and still moves horizontally downward, which can avoid point contact.

[0050] Example 2

[0051] The difference between the optical frame provided in the second embodiment and the optical frame in the first embodiment lies in the connection relationship between the ball groove fixture 31 and the notch 22 .

[0052] In the second embodiment, the outer wall of the ball slot fixture 31 is threadedly matched with the inner wall of the slot 22, and the helix angle of the thread around the ball slot fixture 31 is greater than the friction angle. That is, in the threaded match between the ball slot fixture 31 and the slot 22, the thread cannot be self-locking, so that the ball slot fixture 31 can move along the opening direction of the slot 22 under the action of the ball head rod 32, and then the bottom plate 2 can be lifted in cooperation with the support table to achieve the pitch angle adjustment of the optical lens assembly 11 on the vertical plate 1.

[0053] Example 3

[0054] The difference between the optical frame provided in the third embodiment and the optical frame in the first embodiment lies in the connection relationship between the ball groove fixture 31 and the notch 22 .

[0055] In this embodiment 3, the ball slot fixture 31 is sleeved in the slot 22, and the opening direction of the slot 22 is perpendicular to the plate surface of the base plate 2 for contacting with the support table. The ball slot fixture 31 and the slot 22 can slide relative to each other along the opening direction of the slot 22, so that the ball slot fixture 31 can move along the opening direction of the slot 22 under the action of the ball head rod 32, and then cooperate with the support table to lift the base plate 2 to achieve the pitch angle adjustment of the optical mirror assembly 11 on the vertical plate 1.

[0056] Furthermore, in order to ensure that the ball slot fixture 31 slides stably in the slot 22, this embodiment 3 may be provided with a guide mechanism between the ball slot fixture 31 and the slot 22, and the guide mechanism may include a slide groove 27 arranged on the inner wall of the slot 22 and a slider 26 arranged on the ball slot fixture 31, or the guide mechanism may include a slider 26 arranged on the inner wall of the slot 22 and a slide groove 27 arranged on the ball slot fixture 31.

[0057] To facilitate implementation, Figure 7 As shown, the guide mechanism in the present embodiment 3 includes a slide groove 27 arranged on the inner wall of the notch 22 and a slider 26 arranged on the ball groove fixture 31 .

[0058] Example 4

[0059] The difference between the optical frame provided in the fourth embodiment and the optical frame in the first embodiment lies in the connection relationship between the adjustment component 3 and the base plate 2 .

[0060] In this embodiment 4, Figure 8As shown, a receiving cavity 28 is provided on the plate surface of the bottom plate 2 for contacting with the support surface, and a ball groove fixture 31 is installed in the receiving cavity 28. When in use, the ball head end of the ball head rod 32 abuts in the groove of the ball groove fixture 31, and the other end is used to abut on the support surface, and the ball head rod 32 is a telescopic rod, so that the bottom plate 2 can be lifted or lowered in height by the telescopic pushing action of the ball head rod 32 and in cooperation with the support surface, so as to adjust the pitch angle of the optical lens assembly 11 on the vertical plate 1.

[0061] Preferably, in this embodiment 4, the ball head rod 32 can be an electric telescopic rod or a hydraulic telescopic rod, etc.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical frame, characterized in that: It includes a vertical plate and a bottom plate, wherein the vertical plate is used to install the optical mirror assembly, the bottom plate is provided with a locking assembly for fastening the bottom plate to the supporting table, and the bottom plate is fixed to the bottom of the vertical plate; It also includes an adjustment component located beside the vertical plate, one end of the adjustment component is used to connect with the support table surface, and the other end is connected with the base plate; the adjustment component includes a ball groove firmware and a ball head rod, and the ball head of the ball head rod is adapted to the spherical groove of the ball groove firmware; when in use, the distance between the base plate and the support table surface is adjusted by changing the relative position between the ball head rod and the base plate.

2. The optical frame according to claim 1, characterized in that: The base plate is provided with a groove for installing the ball slot fixture on the plate surface that contacts the support table surface, and a threaded hole that cooperates with the thread of the ball head rod is opened on the plate surface on the other side of the base plate; when in use, the ball head end of the ball head rod abuts against the groove of the ball slot fixture, and the height of the base plate is raised on the support table surface through the thread transmission between the ball head rod and the base plate.

3. The optical frame according to claim 2, characterized in that: The groove end of the ball slot fixture is provided with a flange structure, and the inner wall of the opening end of the slot is provided with an annular protrusion structure threadedly matched with the flange structure. By screwing the ball slot fixture, the flange structure can be located between the annular protrusion structure and the bottom of the slot.

4. The optical frame according to claim 2, characterized in that: The ball groove fixture is threadedly matched with the inner wall of the groove, and in the thread around the ball groove fixture, the helix lead angle is greater than the friction angle.

5. The optical frame according to claim 2, characterized in that: The ball slot fixture is sleeved in the slot, and the ball slot fixture and the slot can slide relatively along the opening direction of the slot.

6. The optical frame according to claim 5, characterized in that: A guide mechanism is provided between the ball slot fixture and the slot, wherein the guide mechanism comprises a slide groove arranged on the inner wall of the slot and a slider arranged on the ball slot fixture, or the guide mechanism comprises a slider arranged on the inner wall of the slot and a slide groove arranged on the ball slot fixture.

7. The optical frame according to claim 1, characterized in that: The bottom plate is provided with a receiving cavity on the plate surface which is used to contact the supporting table surface, and the ball slot fixture is installed in the receiving cavity; when in use, the ball head end of the ball head rod abuts against the groove of the ball slot fixture, and the other end is used to abut against the supporting table surface, and the ball head rod is a telescopic rod.

8. The optical frame according to any one of claims 1 to 7, characterized in that: There are at least two adjusting components, and all the adjusting components are distributed on both sides of the vertical plate.

9. The optical frame according to any one of claims 1 to 7, characterized in that: A circular through hole is provided on the bottom plate, and the locking assembly includes a spring washer, a screw washer and a locking screw adapted to the circular through hole; when in use, the locking screw is used to be fastened to the support table after passing through the spring washer, the screw washer and the circular through hole in sequence.

10. The optical frame according to any one of claims 1 to 7, characterized in that: Reinforcement plates are fixedly disposed at both ends of the vertical plate, and hanging rings are fixedly disposed on the outer plate surfaces of the reinforcement plates.

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