A filter mounting seat

Abstract

A filter mounting seat belongs to the technical field of mounting seats. The problem in the prior art that the filter mounting seat can only be adsorbed and mounted on a plane and is not suitable for a raised surface is solved. The filter mounting seat of the present invention includes a filter seat, a magnet and a handle; the filter seat is a disc structure, a first groove is provided in the central area of ​​the disc structure, a first through hole is provided at the bottom of the groove, more than three second grooves are provided on one side of the edge area of ​​the disc structure, and more than three third grooves are provided on the other side correspondingly, and a second through hole connected to the third groove is provided at the bottom of the second groove, and a magnet is fixed in each third groove, and the magnet and the screw head can be adsorbed and connected; the bottom end of the handle is fixed to the side of the disc structure and is located in the radial direction of the disc structure. The filter mounting seat can be installed on a raised surface, and the magnetic force can be adjusted by adjusting the axial distance between the second groove and the inner end face of the magnet and the size of the second through hole.

Description

Technical Field

[0001] The invention belongs to the technical field of mounting seats, and in particular relates to a filter mounting seat. Background Art

[0002] Optical filters are optical devices used to select the desired radiation bands. Optical filters are made by adding special dyes to plastic or glass substrates or by vapor-depositing optical films on their surfaces. They are used to attenuate (or absorb) certain light bands in light waves or to accurately select a small range of light bands to pass through, while reflecting (or absorbing) other undesirable bands. By changing the structure of the filter and the optical parameters of the film layer, various spectral characteristics can be obtained, so that the filter can control, adjust and change the transmission, reflection, polarization or phase state of light waves.

[0003] In optical instruments, there is no place to directly place the filter, so a filter mount is required. The filter mounts in the prior art include filter mounts with a threaded screw structure, filter mounts with a flange stop screw axially fixed structure, and filter mounts with a magnetic structure. Both the filter mounts with a threaded screw structure and the filter mounts with a flange stop screw axially fixed structure require screwing in the threads or unscrewing the screws, which is inconvenient to use. The magnetic structure filter mount is easy to use, but the mounting end face is required to be a flat surface, which is not suitable for raised surfaces. For an optical system that has been designed, the screw head usually protrudes from the mounting end face, resulting in the magnetic structure filter base not being able to fit well for installation. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem in the prior art that a filter mounting seat can only be installed on a plane by adsorption and is not suitable for a raised surface, and to provide a filter mounting seat that can be installed on a raised surface, and the magnetic force can be adjusted by adjusting the axial distance between the inner end surface of the second groove and the inner end surface of the magnet and the size of the second through hole.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows.

[0006] The filter mounting seat of the present invention comprises a filter seat, a magnet and a handle;

[0007] The filter seat is a disc structure, the central area of ​​the disc structure is provided with a first groove coaxially arranged therewith, the bottom of the first groove is provided with a first through hole, the shape and size of the first groove match the filter, one side of the edge area of ​​the disc structure is provided with more than three second grooves, and the other side is correspondingly provided with more than three third grooves, the second grooves and the third grooves are coaxially arranged one by one, and the bottom of the second groove is provided with a second through hole connected to the third groove, the second groove is used to accommodate the screw head protruding from the mounting end face, and each third groove is fixed with a magnet, and the magnet is adsorbed and connected to the screw head;

[0008] The bottom end of the handle is fixed to the side of the disc structure and is located in the radial direction of the disc structure.

[0009] Preferably, a chamfer is provided at the opening of the first groove, and the chamfer is located on the same side as the third groove.

[0010] Preferably, the filter is bonded and fixed in the first groove of the filter holder, and the magnet is bonded and fixed in the third groove; more preferably, the bonding material used is silicone resistant to 250°C.

[0011] Preferably, the magnet is a samarium cobalt magnet.

[0012] Preferably, the magnet has a temperature resistance of 300° C. or above.

[0013] Preferably, a threaded hole is provided on the side of the disc structure, and an external thread is provided on the bottom end of the handle, and the two are fixedly connected by threaded cooperation.

[0014] Preferably, the filter holder and the handle are both designed with anti-slip patterns in the circumferential direction.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The filter mounting seat of the present invention can be mounted on a mounting end surface with a protruding screw head without any changes to the original optical elements and mechanical structure, and the magnetic force can be adjusted by adjusting the axial distance between the inner end surface of the second groove and the inner end surface of the magnet and the size of the second through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the optical filter mounting seat of the present invention;

[0019] Figure 2 for Figure 1 A cross-sectional view of

[0020] In the figure, 1. filter holder, 1-1. second groove, 1-2. second through hole, 2. filter, 3. magnet, 4. handle. DETAILED DESCRIPTION

[0021] In order to further understand the present invention, preferred embodiments of the present invention are described below. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the filter mounting seat of the present invention comprises a filter seat 1, a magnet 3 and a handle 4. The filter seat 1 is a disc structure, and a first groove coaxially arranged therewith is provided in the central area of ​​the disc structure for mounting the filter 2. A first through hole is provided at the bottom of the first groove for passing light through the filter 2. The shape and size of the first groove match the filter 2, and the cross section is usually circular. One side of the edge area of ​​the disc structure is provided with more than three second grooves 1-1, and the other side is correspondingly provided with more than three third grooves. The second grooves and the third grooves are coaxially arranged one by one, and a second through hole 1-2 communicating with the third groove is provided at the bottom of the second groove 1-1. The second groove 1-1 is used to accommodate the screw head protruding from the mounting end face. A magnet 3 is fixed in each third groove. The magnet 3 is adsorbed and connected with the screw head to fix the filter 2 in the optical system. The bottom end of the handle 4 is fixed to the side of the disc structure and is located in the radial direction of the disc structure.

[0023] In this embodiment, in order to facilitate the installation of the filter 2, a chamfer is provided at the opening of the first groove, and the chamfer is located on the same side as the third groove.

[0024] In this embodiment, the optical filter 2 is preferably bonded to the first groove of the optical filter seat 1 using high temperature resistant silicone of 250°C. There is no special limitation on the size of the optical filter 2. In this embodiment, an optical filter with a diameter of Φ25mm×2mm is used, but it should be noted that other sizes of optical filters 2 in the art are suitable for the optical filter mounting seat of the present invention.

[0025] In this embodiment, the magnet 3 is preferably a samarium cobalt magnet resistant to high temperature of 300°C, and the magnet 3 is bonded in the third groove using silicone resistant to high temperature of 250°C. There is no special restriction on the size of the magnet 3, which can be selected according to actual needs. The size of the magnet 3 selected in this embodiment is Φ4mm×2mm, but it should be noted that magnets 3 of other sizes can also be applied to the present invention.

[0026] In this embodiment, the magnitude of the magnetic force can be adjusted by adjusting the axial distance between the inner end face of the second groove and the inner end face of the magnet 3 and the size of the second through hole. In this embodiment, the axial distance between the inner end face of the magnet 3 and the second groove 1-1 is preferably 0.3 mm to 2 mm, and the diameter of the second through hole 1-2 is 0 to Φ3.5 mm, but it should be noted that other sizes are also applicable to the present invention and can be adjusted according to needs.

[0027] In this embodiment, preferably, the side of the disk structure is provided with a threaded hole, and the bottom end of the handle 4 is provided with an external thread, and the two are fixedly connected by threaded cooperation. It should be noted that the handle 4 and the filter holder 1 in the present invention can also be fixedly connected in other ways.

[0028] In this embodiment, in order to increase the friction between the filter mount and the hand, anti-skid patterns are designed in the circumferential direction of the filter mount 1 and the handle 4. It should be noted that there is no special limitation on the anti-skid pattern, and any anti-skid pattern commonly used in the art can be used.

[0029] The method of using the filter mounting seat of the present invention is as follows: first, the filter 2 is fixed in the first groove, and then the handle 4 is held, and the screw head protruding from the mounting end surface of the optical system is accommodated in the second groove accordingly, and the filter 2 is installed in the optical system through the adsorption force between the magnet 3 and the screw head. When the magnetic force needs to be increased, the axial distance between the outer end surface of the magnet 3 and the second groove 1-1 is reduced or the diameter of the second through hole is increased.

[0030] The present invention is further described below with reference to the examples.

[0031] Example 1

[0032] The filter mounting seat comprises a filter seat 1, a magnet 3 and a handle 4. The filter seat 1 is a disc structure with a size of Φ44mm×6mm. The central area of ​​the disc structure is provided with a first groove coaxially arranged therewith. The outer opening of the first groove is provided with a chamfer. The size of the first groove matches the filter 2 (the Φ2 size of the filter 2 is 25mm×2mm). The filter 2 is bonded in the first groove with high temperature resistant silicone of 250°C. The bottom of the first groove is provided with a first through hole. One side of the edge area of ​​the disc structure is provided with three second grooves 1-1 with a size of Φ7.5mm and a depth of 3.5mm, distributed on a circle of Φ34mm. The other side is provided with three third grooves correspondingly. The second grooves 1-1 correspond to the third grooves one by one and are coaxially arranged. The bottom of the second groove 1-1 is provided with a second through hole 1-2 with a diameter of Φ2mm connected to the third groove. The second groove 1-1 is used to accommodate the screw head protruding from the mounting end face. A magnet 3 is fixed in each third groove. The magnet 3 is bonded to the filter holder 1 with high temperature resistant 250°C silicone. The size of the magnet 3 is Φ4mm×2mm. The material is a samarium cobalt magnet resistant to high temperature of 300°C. The axial distance between the inner end face of the magnet 3 and the inner end face of the second groove 1-1 is 0.5mm. The bottom end of the handle 4 is fixed to the side of the disc structure and is located in the radial direction of the disc structure. The size of the handle 4 is Φ4mm×25mm. It is tightened and fixed to the filter holder 1 through the M3 thread. There are 3 M4 screw heads distributed on the Φ34mm circle on the mounting end face. The screw heads are placed in the second groove 1-1. The magnet 3 is adsorbed and connected with the screw heads to fix the filter 2 in the optical system.

[0033] Obviously, the above-mentioned embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the embodiments. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived therefrom are still within the protection scope of the invention.

Claims

1. A filter mounting seat, characterized in that: It comprises a filter holder (1), a magnet (3) and a handle (4); The filter seat (1) is a disc structure, wherein a first groove coaxially arranged therewith is provided in the central region of the disc structure, a first through hole is provided at the bottom of the first groove, and the shape and size of the first groove match the filter (2); one side of the edge region of the disc structure is provided with more than three second grooves (1-1), and the other side is provided with more than three third grooves correspondingly; the second grooves and the third grooves are coaxially arranged in a one-to-one correspondence, and a second through hole (1-2) communicating with the third groove is provided at the bottom of the second groove (1-1); the second groove (1-1) is used to accommodate a screw head of a mounting end face of a protruding optical system; a magnet (3) is fixed in each third groove, and the magnet (3) is adsorbed and connected to the screw head; The bottom end of the handle (4) is fixed to the side of the disc structure and is located in the radial direction of the disc structure.

2. The filter mount according to claim 1, characterized in that: A chamfer is provided at the opening of the first groove, and the chamfer is located on the same side as the third groove.

3. The filter mounting base according to claim 1, characterized in that: The optical filter (2) is bonded and fixed in the first groove of the optical filter holder (1), and the magnet (3) is bonded and fixed in the third groove.

4. The filter mounting seat according to claim 3, characterized in that: The bonding material used is silicone that is resistant to 250°C.

5. The filter mounting base according to claim 1, characterized in that: The magnet (3) is a samarium cobalt magnet.

6. The filter mount according to claim 1, characterized in that: The magnet (3) has a temperature resistance of over 300°C.

7. The filter mount according to claim 1, characterized in that: A threaded hole is provided on the side of the disc structure, and an external thread is provided on the bottom end of the handle (4), and the two are fixedly connected by threaded cooperation.

8. The filter mounting seat according to claim 1, characterized in that: The filter seat (1) and the handle (4) are both designed with anti-slip mesh patterns in the circumferential direction.

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