Polarization element optical axis adjustment mount

Abstract

This utility model discloses a mounting base for adjusting the optical axis of a polarizing element, comprising a base and a rotating body. The base has a rotating cavity inside, and a first light-transmitting hole and a second light-transmitting hole are respectively opened at both ends of the base, communicating with the rotating cavity. The base also has a side opening communicating with the rotating cavity. The rotating body is rotatably disposed within the rotating cavity, and the rotating body has a mounting cavity for mounting the polarizing element. The first light-transmitting hole, the mounting cavity, and the second light-transmitting hole form a through channel, and at least a portion of the rotating body is exposed through the side opening. This utility model's mounting base eliminates the need for complete disassembly when adjusting the optical axis of the polarizing element; simply rotating the rotating body changes the spatial orientation of the polarizing element, thereby changing the polarization optical axis. This avoids the cumbersome steps of disassembly and recalibrating the angle in traditional methods, significantly improving adjustment efficiency.

Description

Technical Field

[0001] This utility model relates to the field of optical experimental system technology, and in particular to a polarization element optical axis adjustment mounting base. Background Technology

[0002] Polarizing elements (such as waveplates and polarizers) are the core control devices in optical systems, and their optical axis direction plays a decisive role in the conversion efficiency and accuracy of light polarization state. For example, in many applications such as laser processing, quantum communication, and polarization imaging, it is necessary to adjust the spatial orientation of polarizing elements to change the polarization optical axis (hereinafter referred to as the optical axis). However, the installation and adjustment of polarizing elements in current optical experimental systems are inconvenient. Most fixed brackets can only clamp the element, and adjusting the optical axis of the polarizing element requires complete disassembly and recalibration of the angle, resulting in low adjustment efficiency and inconvenient operation. Utility Model Content

[0003] In view of this, the present invention proposes a mounting base for adjusting the optical axis of a polarization element, with the aim of improving the convenience of adjusting the optical axis of the polarization element.

[0004] The solution provided by this utility model includes: A polarization element optical axis adjustment mounting base, comprising: Base and rotating body; The base has a rotating cavity inside, and a first light-transmitting hole and a second light-transmitting hole are respectively opened at both ends of the base to communicate with the rotating cavity. The side of the base also has a side opening to communicate with the rotating cavity. The rotating body is rotatably disposed within the rotating cavity, and the rotating body is provided with a mounting cavity for mounting polarizing elements; The first light-transmitting hole, the mounting cavity, and the second light-transmitting hole form a through channel, and at least a portion of the rotating body is exposed through the side opening.

[0005] As a further optional solution, the axial end face of the rotating body is provided with multiple sets of elastic extrusion components, which abut against the inner wall of the rotating cavity.

[0006] As a further optional solution, the elastic extrusion assembly is provided with at least three sets, and the multiple sets of elastic extrusion assemblies are distributed at equal intervals along the circumference; The elastic extrusion assembly includes a steel ball and a spring. The axial end face of the rotating body is provided with an assembly hole corresponding to the elastic extrusion assembly. The steel ball and the spring are disposed in the assembly hole. The spring applies an elastic preload to the steel ball so that the steel ball abuts against the inner wall of the rotating cavity.

[0007] As a further optional solution, the rotating body includes a mating section and a turning section in the axial direction; A first circumferential mating surface is formed on the outer periphery of the mating section, and a second circumferential mating surface corresponding to the first circumferential mating surface is formed inside the rotating cavity, so as to achieve radial positioning of the rotating body within the rotating cavity; The actuating segment corresponds axially to the position of the side opening.

[0008] As a further optional solution, the outer peripheral wall of the actuating section is provided with a friction pattern.

[0009] As a further optional solution, the mounting cavity is provided with an internal thread, and an annular protrusion is provided in the mounting cavity. An annular fixing member is threadedly connected to the mounting cavity. The polarization element is pressed onto the annular protrusion by the annular fixing member to fix the polarization element in the mounting cavity.

[0010] As a further optional solution, the first light-transmitting hole is located at one end of the annular protrusion, and the first light-transmitting hole is provided with an internal thread; The second light-transmitting hole is located at one end of the annular fixing member. A connecting ring is internally threaded into the second light-transmitting hole. The inner diameter of the second light-transmitting hole is larger than the outer diameter of the annular fixing member, and the inner diameter of the connecting ring is smaller than the outer diameter of the annular fixing member. The connecting ring is provided with an internal thread.

[0011] As a further optional solution, the base is provided with a radially opened fixing hole, the fixing hole communicating with the rotating cavity, and a set screw is threaded into the fixing hole.

[0012] As a further optional solution, the base is provided with a mounting hole, which is a threaded hole; the channel formed by the first light-transmitting hole, the mounting cavity and the second light-transmitting hole is perpendicular to the length direction of the mounting hole.

[0013] As a further alternative, the base includes a first base body and a second base body, the rotating cavity is formed between the first base body and the second base body, and the first base body and the second base body are fixed with screws.

[0014] Compared with the prior art, the polarization element optical axis adjustment mounting base of this application has at least the following advantages: By incorporating a rotating cavity within the base and mounting a rotating body within it, a mounting cavity for the polarizing element is provided inside the rotating body. Adjusting the optical axis of the polarizing element eliminates the need for complete disassembly; simply rotating the rotating body changes the spatial orientation of the polarizing element, thereby altering the optical axis. This avoids the cumbersome steps of disassembly and recalibration required in traditional methods, significantly improving adjustment efficiency. A side opening connecting to the rotating cavity is provided on the side of the base, with at least a portion of the rotating body exposed through this opening. This allows operators to easily manipulate the rotating body directly through the side opening, eliminating the need for complex tools or procedures, greatly simplifying the adjustment process and enhancing ease of use. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of a polarization element optical axis adjustment mounting base according to an embodiment of this utility model; Figure 2 This is a second schematic diagram of the structure of a polarization element optical axis adjustment mounting base according to an embodiment of this utility model; Figure 3 This is an exploded view of a polarization element optical axis adjustment mounting base according to an embodiment of the present invention; Figure 4 This is a front view of a polarization element optical axis adjustment mounting base according to an embodiment of this utility model; Figure 5 yes Figure 4 Schematic diagram of the cross section of AA; Figure 6 This is an exploded view of the elastic compression component on the rotating body in an embodiment of this utility model; Figure 7 yes Figure 4 Cross-sectional view of BB; Figure 8 yes Figure 7 Enlarged view of C; In the diagram: 1. Base; 1a. First base body; 1b. Second base body; 11. Rotating cavity; 111. Second circumferential mating surface; 12. First light-transmitting hole; 13. Second light-transmitting hole; 14. Side opening; 15. Connecting ring; 16. Fixing hole; 17. Set screw; 18. Mounting hole; 2. Rotating body; 2a. Mating section; 2b. Actuating section; 21. Mounting cavity; 22. Annular protrusion; 23. Annular fastener; 24. Assembly hole; 25. First circumferential mating surface; 26. Friction pattern; 27. Elastic extrusion assembly; 271. Steel ball; 272. Spring; 3. Passage. Detailed Implementation

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0020] refer to Figures 1 to 8 An embodiment of this utility model shows a polarization element optical axis adjustment mounting base, including a base 1 and a rotating body 2; the base 1 has a rotating cavity 11 inside, and a first light-transmitting hole 12 and a second light-transmitting hole 13 communicating with the rotating cavity 11 are respectively opened at both ends of the base 1, and a side opening 14 communicating with the rotating cavity 11 is also provided on the side of the base 1; the rotating body 2 is rotatably disposed in the rotating cavity 11, and the rotating body 2 has a mounting cavity 21 for mounting the polarization element; wherein, the first light-transmitting hole 12, the mounting cavity 21 and the second light-transmitting hole 13 form a through channel 3, and at least a part of the rotating body 2 is exposed outside the side opening 14.

[0021] When the mounting base is applied to an optical experimental system, the first light-passing hole 12 and the second light-passing hole 13 correspond to two optical elements (such as optical sleeves), and the polarization element is set on the rotating body 2, that is, the polarization element is located between the two optical elements. In this embodiment, by setting a rotating cavity 11 inside the base 1 and rotating the body 2 within the rotating cavity 11, the optical axis of the polarization element can be adjusted without disassembling the entire unit. Simply rotating the body 2 changes the spatial orientation of the polarization element, thereby changing the optical axis. This avoids the cumbersome steps of disassembly and recalibrating the angle in traditional methods, significantly improving adjustment efficiency. The base 1 has a side opening 14 communicating with the rotating cavity 11, and at least a portion of the body 2 is exposed through the side opening 14. This allows the operator to easily rotate the body 2 directly through the side opening 14 without the need for complex tools or procedures, greatly simplifying the adjustment operation and improving ease of use.

[0022] In some embodiments, the axial end face of the rotating body 2 is provided with a plurality of elastic compression components 27, and the elastic compression components 27 abut against the inner wall of the rotating cavity 11.

[0023] One end of the rotating body 2 contacts the interior of the rotating cavity 11 through the elastic compression component 27, thereby preventing the entire axial end face of the rotating body 2 from abutting against the inner wall of the rotating cavity 11 and reducing friction.

[0024] More specifically, such as Figure 6 and Figure 8 As shown, the elastic extrusion assembly 27 is provided with at least three sets, and the multiple sets of elastic extrusion assemblies 27 are distributed equidistantly along the circumference; the elastic extrusion assembly 27 includes steel balls 271 and springs 272, and the axial end face of the rotating body 2 is provided with mounting holes 24 corresponding to the elastic extrusion assembly 27. The steel balls 271 and springs 272 are disposed in the mounting holes 24, and the springs 272 apply elastic preload to the steel balls 271 so that the steel balls 271 abut against the inner wall of the rotating cavity 11.

[0025] Among them, the steel ball 271 forms point contact with the inner wall of the rotating cavity 11, resulting in low friction; at least three steel balls 271 are evenly distributed on the axial end face of the rotating body 2, making the posture of the rotating body 2 more stable.

[0026] In some embodiments, such as Figures 6 to 8 As shown, the rotating body 2 includes a mating section 2a and a turning section 2b in the axial direction; a first circumferential mating surface 25 is formed on the outer periphery of the mating section 2a, and a second circumferential mating surface 111 corresponding to the first circumferential mating surface 25 is formed in the rotating cavity 11 to achieve radial positioning of the rotating body 2 in the rotating cavity 11; the turning section 2b corresponds to the position of the side opening 14 in the axial direction.

[0027] The first circumferential mating surface 25 on the mating section 2a is adapted to the size of the second circumferential mating surface 111 in the rotating cavity 11, so that the rotating body 2 can rotate around its own axis and the rotating body 2 does not wobble in the radial direction; preferably, the axial length of the contact surface between the first circumferential mating surface 25 and the second circumferential mating surface 111 does not exceed 3mm, so that the friction between the first circumferential mating surface 25 and the second circumferential mating surface 111 is not too large, avoiding difficulty in rotating the rotating body 2.

[0028] In some embodiments, such as Figure 1 and Figure 6 As shown, the outer peripheral wall of the actuating section 2b is provided with friction patterns 26. In this way, it is not easy to slip when the rotating body 2 is actuated with a finger.

[0029] In addition, such as Figure 4 As shown, two side openings 14 are symmetrically provided on the base 1, which facilitates gripping the two sides of the rotating body 2 to rotate the rotating body 2.

[0030] In some embodiments, to facilitate fixing the polarization element within the mounting cavity 21 of the rotating body 2, such as... Figure 3 and Figure 5 As shown, the mounting cavity 21 is provided with an internal thread, and an annular protrusion 22 is provided in the mounting cavity 21. An annular fixing member 23 is connected to the mounting cavity 21 by the internal thread. The polarization element is pressed onto the annular protrusion 22 by the annular fixing member 23 to fix the polarization element in the mounting cavity 21.

[0031] Specifically, when installing the polarizing element, first unscrew the annular fixing member 23, then place the polarizing element into the mounting cavity 21, and then screw the annular fixing member 23 back into the mounting cavity 21, so that the annular fixing member 23 presses the polarizing element onto the annular protrusion 22; in other words, the annular protrusion 22 and the annular fixing member 23 clamp the polarizing element, so that the polarizing element and the rotating body 2 are relatively fixed.

[0032] In some embodiments, such as Figure 3 and Figure 5 As shown, the first light-transmitting hole 12 is located at one end of the annular protrusion 22, and the first light-transmitting hole 12 is provided with an internal thread; the second light-transmitting hole 13 is located at one end of the annular fixing member 23, and the second light-transmitting hole 13 is internally threaded to a connecting ring 15. The inner diameter of the second light-transmitting hole 13 is larger than the outer diameter of the annular fixing member 23, and the inner diameter of the connecting ring 15 is smaller than the outer diameter of the annular fixing member 23. The connecting ring 15 is provided with an internal thread.

[0033] In this embodiment, the first light-transmitting hole 12 is provided with an internal thread, which can facilitate direct threaded connection with optical components such as optical sleeves, making it convenient to build an optical experimental system; similarly, the connecting ring 15 is provided with an internal thread, which is also for the purpose of facilitating threaded connection with optical components such as optical sleeves.

[0034] In this embodiment, the purpose of providing a connecting ring 15 on the second light-transmitting hole 13 is that when the connecting ring 15 is installed on the second light-transmitting hole 13, the annular fixing member 23 cannot be removed from the rotating body 2 (the outer diameter of the annular fixing member 23 is larger than the inner diameter of the connecting ring 15); if it is necessary to install or remove the annular fixing member 23, the connecting ring 15 must be removed first. In this way, even if the annular fixing member 23 becomes loose on the rotating body 2, it cannot be removed from the mounting cavity 21, thereby ensuring that the polarization element cannot be removed from the mounting cavity 21.

[0035] In some embodiments, such as Figure 5 As shown, the base 1 has a radially opened fixing hole 16, which connects to the rotating cavity 11. A set screw 17 is threaded into the fixing hole 16. Thus, after the optical axis is adjusted, the end of the set screw 17 can be pressed against the rotating body 2, preventing the rotating body 2 from rotating and ensuring the stability of the optical axis during the experiment.

[0036] In some embodiments, such as Figure 2 As shown, the base 1 is provided with a mounting hole 18, which is a threaded hole; the channel 3 formed by the first light-transmitting hole 12, the mounting cavity 21 and the second light-transmitting hole 13 is perpendicular to the length direction of the mounting hole 18.

[0037] In this embodiment, the mounting hole 18 on the base 1 can be threadedly connected to the support rod in the optical experimental system, making it easy to install the mounting base into the optical experimental system.

[0038] In some embodiments, to facilitate the machining of the rotating cavity 11 and the mounting of the rotating body 2 to the rotating cavity 11, such as... Figure 3 As shown, the base 1 includes a first base body 1a and a second base body 1b, and the rotating cavity 11 is formed between the first base body 1a and the second base body 1b. The first base body 1a and the second base body 1b are fixed with screws.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A mounting base for adjusting the optical axis of a polarization element, characterized in that, include: Base and rotating body; The base has a rotating cavity inside, and a first light-transmitting hole and a second light-transmitting hole are respectively opened at both ends of the base to communicate with the rotating cavity. The side of the base also has a side opening to communicate with the rotating cavity. The rotating body is rotatably disposed within the rotating cavity, and the rotating body is provided with a mounting cavity for mounting polarizing elements; The first light-transmitting hole, the mounting cavity, and the second light-transmitting hole form a through channel, and at least a portion of the rotating body is exposed through the side opening.

2. The polarization element optical axis adjustment mounting base according to claim 1, characterized in that: Multiple sets of elastic extrusion components are provided on the axial end face of the rotating body, and the elastic extrusion components abut against the inner wall of the rotating cavity.

3. The polarization element optical axis adjustment mounting base according to claim 2, characterized in that: The elastic extrusion assembly is provided in at least three sets, and the multiple sets of elastic extrusion assemblies are distributed at equal intervals along the circumference. The elastic extrusion assembly includes a steel ball and a spring. The axial end face of the rotating body is provided with an assembly hole corresponding to the elastic extrusion assembly. The steel ball and the spring are disposed in the assembly hole. The spring applies an elastic preload to the steel ball so that the steel ball abuts against the inner wall of the rotating cavity.

4. The polarization element optical axis adjustment mounting base according to claim 2 or 3, characterized in that: The rotating body includes a mating section and a turning section in the axial direction; A first circumferential mating surface is formed on the outer periphery of the mating section, and a second circumferential mating surface corresponding to the first circumferential mating surface is formed inside the rotating cavity, so as to achieve radial positioning of the rotating body within the rotating cavity; The actuating segment corresponds axially to the position of the side opening.

5. The polarization element optical axis adjustment mounting base according to claim 4, characterized in that: The outer peripheral wall of the actuating section is provided with friction patterns.

6. The polarization element optical axis adjustment mounting base according to claim 1, characterized in that: The mounting cavity is provided with an internal thread, and an annular protrusion is provided inside the mounting cavity. An annular fixing member is threadedly connected inside the mounting cavity. The polarization element is pressed onto the annular protrusion by the annular fixing member to fix the polarization element inside the mounting cavity.

7. The polarization element optical axis adjustment mounting base according to claim 6, characterized in that: The first light-transmitting hole is located at one end of the annular protrusion, and the first light-transmitting hole is provided with an internal thread; The second light-transmitting hole is located at one end of the annular fixing member. A connecting ring is internally threaded into the second light-transmitting hole. The inner diameter of the second light-transmitting hole is larger than the outer diameter of the annular fixing member, and the inner diameter of the connecting ring is smaller than the outer diameter of the annular fixing member. The connecting ring is provided with an internal thread.

8. The polarization element optical axis adjustment mounting base according to claim 7, characterized in that: The base is provided with a radially opened fixing hole, which communicates with the rotating cavity, and a set screw is threaded into the fixing hole.

9. The polarization element optical axis adjustment mounting base according to claim 8, characterized in that: The base is provided with a mounting hole, which is a threaded hole; the channel formed by the first light-transmitting hole, the mounting cavity and the second light-transmitting hole is perpendicular to the length direction of the mounting hole.

10. The polarization element optical axis adjustment mounting base according to claim 8, characterized in that: The base includes a first base body and a second base body, and the rotating cavity is formed between the first base body and the second base body. The first base body and the second base body are fixed together with screws.

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