PBS prism fixing device, optical path system and laser

Abstract

The utility model belongs to the technical field of prism fixing, and particularly relates to a PBS prism fixing device, a light path system and a laser. The PBS prism fixing device comprises a base and a support which is rotatably installed on the base. The support is provided with a prism accommodating groove, an S polarized light receiving hole and a P polarized light transmitting hole, wherein the S polarized light receiving hole and the P polarized light transmitting hole are communicated with the prism accommodating groove. According to the PBS prism fixing device, the PBS prism can be fixed through the support with the prism containing groove, the support is rotatably installed on the base, and rotation debugging of the PBS prism is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of prism fixing, and particularly relates to a PBS prism fixing device, an optical path system and a laser. Background Art

[0002] In the field of lasers, various prisms are often used. During use, the prisms need to be fixed to cooperate with other devices to complete specified work. Among them, the PBS prism, that is, the Polarizing Beam Splitter, is a special optical element that can split the incident unpolarized light into two perpendicular linearly polarized lights. These two lights are the P-polarized light and the S-polarized light respectively. Among them, the P-polarized light completely passes through the prism, while the S-polarized light is reflected at a 45-degree angle, and the outgoing direction forms a 90-degree angle with the P light.

[0003] When the existing PBS prisms are fixed, a simple single-sided adhesive fixing method is adopted. Under some conditions, an additional light-trapping trap is also required, and it cannot be rotated and adjusted inside the laser. Not only is the structure complex, but also the operability of the PBS prism debugging is reduced. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a PBS prism fixing device, an optical path system and a laser to solve the above technical problems.

[0005] The utility model provides a PBS prism fixing device, including:

[0006] A base, and a bracket rotatably mounted on the base; wherein

[0007] A prism receiving groove is provided on the bracket, and an S-polarized light trapping hole and a P-polarized light passing hole communicated with the prism receiving groove are provided.

[0008] In an embodiment of the present application, a shaft hole is provided on the base, and at least a part of the bracket is received in the shaft hole.

[0009] In an embodiment of the present application, an opening communicated with the side of the shaft hole is provided on the base;

[0010] A fastener is provided on the opening for reducing the opening so that the shaft hole tightly holds the part of the bracket received in the shaft hole.

[0011] In an embodiment of the present application, the bracket includes a prism mounting portion and a rotating shaft portion;

[0012] The prism receiving groove and the S-polarized light trapping hole communicated with the prism receiving groove are provided on the prism mounting portion;

[0013] The rotating shaft portion is received in the shaft hole, and a P-polarized light passing hole communicating with the prism receiving groove is provided in the rotating shaft portion.

[0014] In an embodiment of the present application, a plurality of setscrew holes communicating with the prism receiving groove are provided on the prism mounting portion;

[0015] A setscrew for pushing against the side of the prism in the prism receiving groove is provided in the setscrew hole.

[0016] In an embodiment of the present application, a plurality of heat sinks are provided on the prism mounting portion.

[0017] In an embodiment of the present application, the prism mounting portion includes:

[0018] A main body portion, one end of which is provided with the prism receiving groove and the other end is connected to the rotating shaft portion;

[0019] Four blocks are provided on four side edges of the main body portion; among the four blocks, adjacent two are provided with the setscrew holes, and one is provided with the S-polarized light collecting hole; and

[0020] Heat sinks are provided at the respective corners of the main body portion.

[0021] In an embodiment of the present application, oval fixing holes are provided on the bottom plate of the base.

[0022] Correspondingly, the present utility model further provides an optical path system including the PBS prism fixing device as described above.

[0023] Correspondingly, the present utility model further provides a laser including the PBS prism fixing device as described above.

[0024] The beneficial effect of the present utility model is that the PBS prism fixing device of the present utility model includes a base and a bracket rotatably mounted on the base; a prism receiving groove, an S-polarized light collecting hole communicating with the prism receiving groove, and a P-polarized light passing hole are provided on the bracket. The PBS prism fixing device of the present utility model can fix the PBS prism through the bracket having the prism receiving groove, and the bracket is rotatably mounted on the base, facilitating the rotation and debugging of the PBS prism.

[0025] Other features and advantages of the present utility model will be described in the following description, and, in part, will be obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.

[0026] To make the above objectives, features, and advantages of the present utility model more obvious and understandable, the following preferred embodiments are specifically described below in conjunction with the accompanying drawings. Brief Description of the Drawings

[0027] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 and Figure 2 is a perspective view of the PBS prism fixing device of the present utility model;

[0029] Figure 3 is a top view of the bracket of the PBS prism fixing device of the present utility model;

[0030] Figure 4 is Figure 3 a cross-sectional view taken along the line A-A in

[0031] Figure 5 is Figure 3 a cross-sectional view taken along the line B-B in

[0032] Figure 6 is an assembly schematic diagram of the PBS prism fixing device of the present utility model;

[0033] Figure 7 is a solid of the bracket of the PBS prism fixing device of the present utility model.

[0034] In the figure:

[0035] base 1, shaft hole 11, opening 12, fastener 13, fixing hole 14, bracket 2, prism mounting part 21, main body part 211, block 212, heat sink 213, setscrew 214, setscrew hole 215, rotating shaft part 22, prism receiving groove 3, S-polarized light collecting hole 31, P-polarized light passing hole 32, prism 100. Detailed Description of the Embodiments

[0036] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions of the present utility model with reference to the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0037] See Figures 1 to 7, in an embodiment of the present application, the PBS prism fixing device includes: a base 1, and a bracket 2 rotatably mounted on the base 1; wherein a prism receiving groove 3 is provided on the bracket 2, and an S-polarized light trapping hole 31 and a P-polarized light passing hole 32 communicated with the prism receiving groove 3 are provided.

[0038] Optionally, refer to Figure 2 , a shaft hole 11 is provided on the base 1, and at least a part of the bracket 2 is received in the shaft hole 11. For example, a rotating shaft or a cylinder adapted to the shaft hole 11 can be provided on the bracket 2, etc., so that the bracket 2 can be rotated and adjusted in angle on the base 1.

[0039] Furthermore, an opening 12 communicated with the side of the shaft hole 11 is provided on the base 1; a fastener 13 is provided on the opening 12 for narrowing the opening 12 so that the shaft hole 11 holds the part of the bracket 2 received in the shaft hole 11.

[0040] As an alternative embodiment, refer to Figure 2 and Figure 6 , the shaft hole 11 can be opened in the middle of the base 1, and the opening 12 can extend downward from the top of the base 1 to communicate with the shaft hole 11. After the bracket 2 is inserted into the shaft hole 11 and rotated and adjusted in angle, the opening 12 can be narrowed by tightening the fastener 13 so that the shaft hole 11 holds the bracket 2, thereby fixing the bracket 2.

[0041] As a preferred embodiment of the bracket 2, refer to Figures 2 to 7 , the bracket 2 includes a prism mounting portion 21 and a rotating shaft portion 22; wherein the prism receiving groove 3 is provided on the prism mounting portion 21, and the S-polarized light trapping hole 31 communicated with the prism receiving groove 3 is provided; the rotating shaft portion 22 is received in the shaft hole 11, and the P-polarized light passing hole 32 communicated with the prism receiving groove 3 is provided in the rotating shaft portion 22.

[0042] Furthermore, a plurality of setscrew holes 215 communicated with the prism receiving groove 3 are provided on the prism mounting portion 21; setscrews 214 for pushing the side of the prism in the prism receiving groove 3 are provided in the setscrew holes; the prism 100 can be fixed in the prism receiving groove 3 by screwing the corresponding setscrews 214 into the setscrew holes 215.

[0043] Optionally, the setscrew 214 can be made of polytetrafluoroethylene; the setscrew hole 215 can be a threaded hole, and the setscrew 214 is in threaded fit with the setscrew hole 215.

[0044] Preferably, a plurality of heat sinks 213 are provided on the prism mounting portion 21.

[0045] Refer to Figure 3 , Figure 4 ,Figure 5 and Figure 7 As a preferred embodiment of the prism mounting portion 21, the prism mounting portion 21 includes:

[0046] A main body portion 211, at one end of which there is provided the prism receiving groove 3, and at the other end is connected to the rotating shaft portion 22; and the P-polarized light passing hole 32 in the rotating shaft portion 22 communicates with the prism receiving groove 3; optionally, the main body portion 211 may be the central portion of the prism mounting portion 21;

[0047] Four blocks 212 are respectively arranged on four side edges of the main body portion 211; among the four blocks 212, two adjacent ones are provided with the setscrew holes 215, and one is provided with the S-polarized light collecting hole 31; see Figure 5 , the setscrew holes 215 are arranged in the left and upper side blocks, the S-polarized light collecting hole 31 is arranged in the right side block, and the axis of the S-polarized light collecting hole 31 is perpendicular to the axis of the P-polarized light passing hole 32; and

[0048] Heat sinks 213 are arranged at the respective corners of the main body portion 211; the number of heat sinks 213 may be one, two or more.

[0049] In this embodiment, optionally, an oval fixing hole 14 is provided on the bottom plate of the base 1.

[0050] Preferably, the extending direction of the fixing hole 14 may be the same as the axial direction of the rotating shaft portion 22, so as to facilitate the adjustment of the front and rear positions during the installation of the base 1.

[0051] In an application scenario, see Figure 6 , when fixing the prism 100, place the prism 100 into the prism receiving groove 3, with the vertical polarization (S polarization direction) facing the S-polarized light collecting hole 31; then pre-tighten two setscrews 214, which may be to use a torque screwdriver to tighten the setscrews 214; further, fit the rotating shaft portion 22 of the bracket 2 into the shaft hole 11 on the base 1, pre-tighten the fastener 13 on the base opening 12, rotate and adjust the bracket 2, and after finding the optimal angle, lock the fastener 13.

[0052] In this embodiment, the PBS prism fixing device has a high degree of modularization, and the bracket 2 has the functions of fixing the prism 100, heat dissipation, light collection, and rotation; the base can be installed in the required scenarios and has a high adaptability.

[0053] Correspondingly, on the basis of the above embodiment, another embodiment of the present application provides an optical path system, including the PBS prism fixing device as described above.

[0054] Correspondingly, on the basis of the above embodiment, another embodiment of the present application provides a laser, including the PBS prism fixing device as described above.

[0055] In summary, the PBS prism fixing device of the present utility model has a simple structure and a high degree of modularization, reduces the requirements for employees during installation and debugging, is easy to operate; improves the adjustability of the PBS prism; improves the product stability and consistency; and saves the usage space of the PBS prism.

[0056] Each device (components without specific structures described) selected in this application is a general standard component or a component known to those skilled in the art, and its structure and principle can be known by those skilled in the art through technical manuals or by conventional experimental methods.

[0057] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection.

[0058] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0059] Taking the above-mentioned ideal embodiments of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A PBS prism fixing device, characterized in that: include: A base (1), and a bracket (2) rotatably mounted on the base (1); in The bracket (2) is provided with a prism receiving groove (3), and an S-polarized light receiving hole (31) and a P-polarized light passing hole (32) which are connected to the prism receiving groove (3).

2. The PBS prism fixing device according to claim 1, characterized in that: The base (1) is provided with an axial hole (11), and the bracket (2) is at least partially accommodated in the axial hole (11).

3. The PBS prism fixing device according to claim 2, characterized in that: The base (1) is provided with an opening (12) which is in communication with the side of the shaft hole (11); The opening (12) is provided with a fastener (13) for reducing the opening (12) so that the shaft hole (11) tightly embraces the portion of the bracket (2) accommodated in the shaft hole (11).

4. The PBS prism fixing device according to claim 2, characterized in that: The bracket (2) comprises a prism mounting portion (21) and a rotating shaft portion (22); The prism mounting portion (21) is provided with the prism receiving groove (3) and the S-polarized light hole (31) connected to the prism receiving groove (3); The rotating shaft portion (22) is accommodated in the shaft hole (11), and the rotating shaft portion (22) is provided with the P-polarized light passage hole (32) which is in communication with the prism accommodation groove (3).

5. The PBS prism fixing device according to claim 4, characterized in that: The prism mounting portion (21) is provided with a plurality of top screw holes (215) which are in communication with the prism receiving groove (3); A push screw (214) for pushing the side edge of the prism in the prism receiving groove (3) is arranged in the push screw hole.

6. The PBS prism fixing device according to claim 4, characterized in that: A plurality of heat sinks (213) are arranged on the prism mounting portion (21).

7. The PBS prism fixing device according to claim 5, characterized in that: The prism mounting portion (21) comprises: A main body (211), one end of which is provided with the prism receiving groove (3), and the other end of which is connected to the rotating shaft (22); Four blocks (212) are respectively arranged on four sides of the main body (211); among the four blocks (212), two adjacent blocks are provided with the top screw holes (215), and one block is provided with the S-polarized light trap hole (31); and The heat sink (213) is arranged at each corner of the main body (211).

8. The PBS prism fixing device according to claim 2, characterized in that: An oval-shaped fixing hole (14) is provided on the bottom plate of the base (1).

9. An optical path system, characterized in that: It comprises a PBS prism fixing device as described in any one of claims 1-8.

10. A laser, characterized in that: It comprises a PBS prism fixing device as described in any one of claims 1-8.

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