CN209948327U - Q switch of BNC electrode - Google Patents

Abstract

The utility model provides a Q switch of BNC electrode belongs to the electro-optical Q switch technical field of adjusting, include metal switch shell and install the BNC electrode on metal switch shell upper portion, the BNC electrode includes BNC positive pole and BNC negative pole, the BNC negative pole contacts with metal switch shell, the inside inner chamber that is used for laying the DKDP crystal that is provided with of metal switch shell, be provided with first DKDP crystal electrode and second DKDP crystal electrode on the DKDP crystal. Compared with the prior art, the embodiment of the utility model realizes the effect of the electrical connection of the BNC electrode and the DKDP crystal, uses the insulating wire to connect the electrodes, and solves the problem of unmatched distance between the BNC electrode and the DKDP crystal electrode and the hidden trouble of electric leakage; the conductive rubber is used for bearing the first DKDP crystal electrode on the DKDP crystal and is electrically connected with the BNC anode, and the second DKDP crystal electrode is electrically connected with the BNC cathode, so that the phenomenon that the DKDP crystal is damaged and the phenomenon that the internal optical uniformity of the DKDP crystal is damaged due to the strong external force point do not exist.

Description

Q switch of BNC electrode

Technical Field

The utility model belongs to the technical field of the electro-optical Q-switch that adjusts, specifically a Q-switch of BNC electrode.

Background

Q function is transferred in Q switch experiment because the electro-optic effect of DKDP (potassium dideuterium phosphate) crystal, when adding voltage on the crystal, the optical property of crystal can change, realizes the function of carrying out the break-make to the light, and the easy deliquescence of DKDP crystal needs the encapsulation in inclosed shell during the use, so must be connected the inside DKDP crystal of shell and outside power supply. The general electric connection adopts two electrode pins to be connected with the gold-plated electrodes on the side surface of the crystal, the distance between the electrode pins is approximately equal to the distance between the two gold-plated electrodes on the side surface of the DKDP, the electric connection is simple and easy to assemble, but the electric connection is not suitable for the field with stronger interference signals, such as the laser communication field.

The BNC interface can isolate video input signals, reduce mutual interference between signals, and achieve better signal response effect due to large signal bandwidth, and is widely used in high frequency communication systems.

But the positive negative pole electrode interval of BNC interface is less, and DKDP crystal gilding interval is great, the matching in the distance is difficult to realize to the electricity connection of the two, the electric leakage will appear when the operation is improper, and the positive negative pole of BNC interface is the metal, when with DKDP crystal direct contact, because DKDP crystal's hardness is very little, can not directly carry out extrusion and welding operation, cause DKDP crystal to damage easily, even do not appear damaging, DKDP crystal receives inhomogeneous external force strong point also can influence its inside optical homogeneity, thereby influence Q switch and transfer Q performance.

SUMMERY OF THE UTILITY MODEL

To overcome the disadvantages of the prior art, embodiments of the present invention provide a Q-switch for BNC electrodes.

In order to solve the technical problem, the utility model provides a following technical scheme:

a Q switch of a BNC electrode comprises a metal switch shell and the BNC electrode arranged on the upper part of the metal switch shell, wherein the BNC electrode comprises a BNC positive electrode and a BNC negative electrode, the BNC negative electrode is in contact with the metal switch shell, an inner cavity for placing DKDP crystals is arranged in the metal switch shell, and a first DKDP crystal electrode and a second DKDP crystal electrode are arranged on the DKDP crystals; conductive rubber corresponding to the first DKDP crystal electrode and the second DKDP crystal electrode is further arranged at the bottom in the metal switch shell, one side of the conductive rubber corresponding to the second DKDP crystal electrode is fixedly connected to the inner wall of the metal switch shell, and the other side of the conductive rubber is in contact with the second DKDP crystal electrode; the BNC positive electrode is connected to the first DKDP crystal electrode through an insulated wire.

As a further improvement of the utility model: and the conductive rubber corresponding to the first DKDP crystal electrode is not contacted with the inner wall of the metal switch shell.

As a further improvement of the utility model: the upper portion of the metal switch shell is provided with a mounting hole, one end of the insulating wire is connected with the BNC positive electrode in a welding mode, and the other end of the insulating wire extends into the metal switch shell from the mounting hole and is connected to the conductive rubber corresponding to the first DKDP crystal electrode.

As a further improvement of the utility model: the insulating wire is wound on the conductive rubber corresponding to the first DKDP crystal electrode.

As a further improvement of the utility model: the BNC positive pole is arranged in the middle of the BNC negative pole, and the BNC positive pole is connected with the BNC negative pole through the insulating layer.

As a further improvement of the present invention: and sealing window sheets are arranged on the left side and the right side of the metal switch shell.

Compared with the prior art, the beneficial effects of the utility model are that:

compared with the prior art, the embodiment of the utility model realizes the effect of the electrical connection of the BNC electrode and the DKDP crystal, uses the insulating wire to connect the electrodes, and solves the problem of unmatched distance between the BNC electrode and the DKDP crystal electrode and the hidden trouble of electric leakage; the conductive rubber is used for bearing a first DKDP crystal electrode on the DKDP crystal and electrically connected with a BNC positive electrode, and a second DKDP crystal electrode is electrically connected with a BNC negative electrode, so that the phenomenon that the DKDP crystal is damaged and the phenomenon that the internal optical uniformity of the DKDP crystal is damaged due to strong external force points do not exist; the insulated wire and the conductive rubber are directly wound and connected, and complex operations such as welding and the like do not exist; the connection of the external power supply of the Q switch is carried out through the BNC electrode, so that the Q switch can be used under the condition of high-frequency interference resistance.

Drawings

FIG. 1 is a schematic diagram of a BNC electrode Q-switch;

in the figure: the switch comprises a 1-BNC electrode, a 2-BNC anode, a 3-BNC cathode, a 4-metal switch shell, a 5-inner cavity, 6-DKDP crystals, a 7-first DKDP crystal electrode, an 8-second DKDP crystal electrode, 9-conductive rubber, a 10-sealing window sheet, 11-mounting holes, 12-insulating wires and 13-insulating layers.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1, the present embodiment provides a Q-switch of a BNC electrode, which includes a metal switch housing 4 and a BNC electrode 1 installed on the upper portion of the metal switch housing 4, wherein the BNC electrode 1 includes a BNC positive electrode 2 and a BNC negative electrode 3, and the BNC negative electrode 3 is in contact with the metal switch housing 4; an inner cavity 5 for placing a DKDP crystal 6 is formed in the metal switch shell 4, and a first DKDP crystal electrode 7 and a second DKDP crystal electrode 8 are arranged on the DKDP crystal 6; the bottom in the metal switch shell 4 is also provided with conductive rubber 9 corresponding to the first DKDP crystal electrode 7 and the second DKDP crystal electrode 8, one side of the conductive rubber 9 corresponding to the second DKDP crystal electrode 8 is fixedly connected to the inner wall of the metal switch shell 4, and the other side of the conductive rubber is in contact with the second DKDP crystal electrode 8; the BNC positive electrode 2 is connected to the first DKDP crystal electrode 7 through an insulated wire 12.

The BNC positive electrode 2 is connected to the conductive rubber 9 corresponding to the first DKDP crystal electrode 7 through the insulated wire 12, the conductive rubber 9 corresponding to the first DKDP crystal electrode 7 is in contact with the first DKDP crystal electrode 7 (the conductive rubber 9 here is not in contact with the inner wall of the metal switch case 4), and the second DKDP crystal electrode 8 is in contact with the inner wall of the metal switch case 4 through the conductive rubber 9 corresponding to the second DKDP crystal electrode 8, and further the electrical conduction of the DKDP crystal 6 and the BNC electrode 1 is realized because the BNC negative electrode 3 is in contact with the metal switch case 4.

Through the setting of conductive rubber 9 for DKDP crystal 6 and metal switch shell 4 soft contact, thereby prevented that metal switch shell 4 from producing extrusion wearing and tearing to DKDP crystal 6, avoided producing stronger stress point, lead to DKDP crystal 6 to appear damaging.

The upper portion of the metal switch shell 4 is provided with a mounting hole 11, one end of the insulating wire 12 is connected with the BNC positive electrode 2 in a welding mode, and the other end of the insulating wire extends into the metal switch shell 4 from the mounting hole 11 and is connected to the conductive rubber 9 corresponding to the first DKDP crystal electrode 7.

The conductive rubber 9 corresponding to the BNC positive electrode 2 and the second DKDP crystal electrode 8 is electrically connected by an insulated wire 12.

The insulated wire 12 is wound on the conductive rubber 9 corresponding to the first DKDP crystal electrode 7, so that the insulated wire 12 is not in direct contact with the DKDP crystal 6, stress damage to the DKDP crystal 6 by the insulated wire 12 is prevented, and complex operations such as welding are avoided.

The BNC positive electrode 2 is arranged in the middle of the BNC negative electrode 3, and the BNC positive electrode 2 is connected with the BNC negative electrode 3 through the insulating layer 13, so that the BNC positive electrode 2 is electrically separated from the BNC negative electrode 3.

The working principle of the embodiment is as follows: the BNC positive electrode 2 is connected to the conductive rubber 9 corresponding to the first DKDP crystal electrode 7 through the insulated wire 12, the conductive rubber 9 corresponding to the first DKDP crystal electrode 7 is in contact with the first DKDP crystal electrode 7 (the conductive rubber 9 here is not in contact with the inner wall of the metal switch case 4), and the second DKDP crystal electrode 8 is in contact with the inner wall of the metal switch case 4 through the conductive rubber 9 corresponding to the second DKDP crystal electrode 8, and further the electrical conduction of the DKDP crystal 6 and the BNC electrode 1 is realized because the BNC negative electrode 3 is in contact with the metal switch case 4.

Example 2

Referring to fig. 1, in a Q-switch of a BNC electrode, in this embodiment, compared with embodiment 1, the left and right sides of the metal switch casing 4 are further provided with sealing window sheets 10 for sealing the DKDP crystal 6 in the metal switch casing 4 to prevent the DKDP crystal 6 from being exposed to air and deliquescing.

Compared with the prior art, the embodiment of the utility model realizes the effect of the electrical connection between the BNC electrode 1 and the DKDP crystal 6, uses the insulating wire 12 to connect the electrodes, and solves the problem of the unmatched distance between the BNC electrode 1 and the DKDP crystal 6 and the hidden trouble of electric leakage; the conductive rubber 9 is used for bearing a first DKDP crystal electrode 7 on the DKDP crystal 6 to be electrically connected with the BNC anode 2, and a second DKDP crystal electrode 8 is electrically connected with the BNC cathode 3, so that the phenomenon that the DKDP crystal 6 is damaged and the phenomenon that the internal optical uniformity of the DKDP crystal 6 is damaged due to strong external force do not exist; the insulating wire 12 and the conductive rubber 9 are directly wound and connected, and complex operations such as welding and the like do not exist; the connection of the external power supply of the Q-switch is made via the BNC electrode 1, so that the Q-switch can be used with high-frequency interference resistance.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (6)

1. A Q switch of a BNC electrode comprises a metal switch shell (4) and a BNC electrode (1) arranged on the upper part of the metal switch shell (4), wherein the BNC electrode (1) comprises a BNC positive electrode (2) and a BNC negative electrode (3), and the BNC negative electrode (3) is contacted with the metal switch shell (4), and is characterized in that an inner cavity (5) for placing a DKDP crystal (6) is arranged inside the metal switch shell (4), and a first DKDP crystal electrode (7) and a second DKDP crystal electrode (8) are arranged on the DKDP crystal (6); conductive rubber (9) corresponding to the first DKDP crystal electrode (7) and the second DKDP crystal electrode (8) is further arranged at the bottom in the metal switch shell (4), one side of the conductive rubber (9) corresponding to the second DKDP crystal electrode (8) is fixedly connected to the inner wall of the metal switch shell (4), and the other side of the conductive rubber is in contact with the second DKDP crystal electrode (8); the BNC positive electrode (2) is connected to the first DKDP crystal electrode (7) through an insulating wire (12).

2. The Q-switch of a BNC electrode of claim 1, wherein said conductive rubber (9) corresponding to said first DKDP crystal electrode (7) is not in contact with the inner wall of the metal switch housing (4).

3. The Q switch of BNC electrode according to claim 2, wherein the metal switch housing (4) is provided with a mounting hole (11) at the upper part, one end of the insulated wire (12) is connected with the BNC positive electrode (2) by welding, and the other end of the insulated wire extends into the metal switch housing (4) from the mounting hole (11) and is connected to the conductive rubber (9) corresponding to the first DKDP crystal electrode (7).

4. A BNC electrode Q-switch according to claim 1 or 3, characterized in that said insulated wire (12) is wound on the conductive rubber (9) corresponding to the first DKDP crystal electrode (7).

5. The Q-switch of BNC electrode according to claim 1, wherein the BNC positive electrode (2) is arranged in the middle of the BNC negative electrode (3), and the BNC positive electrode (2) and the BNC negative electrode (3) are connected through the insulating layer (13).

6. A BNC electrode Q-switch according to any of claims 1-3, characterized in that said metal switch housing (4) is further provided with sealing window sheets (10) on left and right sides.