Double-row splitting and light-combining laser light path

Abstract

The utility model discloses a double-row splitting and light-combining laser light path, which comprises a first light path assembly and a second light path assembly which are oppositely arranged, and is characterized by further comprising a combining reflector, a polarizing beam splitter, a first compression prism and a second compression prism, a light beam emitted by the first light path assembly corresponds to the polarizing beam splitter, and a light beam emitted by the second light path assembly corresponds to the combining reflector; the combining reflector is used for reflecting a light beam emitted by the second light path assembly to the polarizing beam splitter, and the light beam refracted by the polarizing beam splitter sequentially passes through the first compression prism and the second compression prism; the double-row splitting and light-combining laser light path further comprises a focus lens, the focus lens is located on the side, away from the first compression triangular prism, of the second compression triangular prism, and light beams refracted by the second compression triangular prism penetrate through the focus lens.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser light paths, in particular to a double-row branching and light-combining laser light path. Background Art

[0002] After atoms (molecules) absorb energy from the outside, they transition from the lower level (low energy state) to the upper level (high energy state). This state is called an excited state. The excited state is an unstable state and will quickly return to the low energy state. This behavior is called a "transition". At this time, light equivalent to the transition energy is radiated. This phenomenon is called spontaneous emission. The radiated light collides with other atoms in the same excited state, and also stimulates them to make the same transition. This induced radiated light is called stimulated emission. The light radiated by atoms is called laser.

[0003] For example, the "a light-combining laser" disclosed in the patent document "CN217115149U" has the main technical effect of setting up multiple groups of laser diodes, connecting the side walls of each group of second cylindrical convex mirrors with circuits, and cooperating the ends of the circuits with focusing light-combining elements, and then refracting the laser through the focusing light-combining element, which can effectively increase the laser power and thus the intensity of the laser when it is emitted.

[0004] In this patent, it is difficult to accurately control the combined light beams, and it is difficult to adjust the direction and position of the light beams, so improvements are needed. Utility Model Content

[0005] The purpose of the utility model is to provide a double-row branching and light-combining laser light path to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A double-row branching and light-combining laser optical path, comprising a first optical path component and a second optical path component, wherein the first optical path component and the second optical path component are arranged opposite to each other, and further comprising a combining reflector, a polarization beam splitter, a first compression prism and a second compression prism, wherein the light beam emitted by the first optical path component corresponds to the polarization beam splitter, and the light beam emitted by the second optical path component corresponds to the combining reflector;

[0008] The combining reflector is used to reflect the light beam emitted by the second optical path component to the polarization beam splitter, and the light beam refracted from the polarization beam splitter passes through the first compression prism and the second compression prism in sequence;

[0009] The double-row branching and light-combining laser light path also includes a focusing lens, which is located on a side of the second compression prism away from the first compression prism, and the light beam refracted from the second compression prism passes through the focusing lens.

[0010] By adopting the above technical solution, the first optical path component and the second optical path component can form two rows of optical paths at the same time, thereby strengthening the energy of the light in the optical path to achieve the purpose of obtaining a more concentrated light spot. The relative arrangement of the first optical path component and the second optical path component can more conveniently concentrate the two rows of optical paths into one optical path. By using a combining reflector and a polarizing beam splitter to merge the optical paths, the brightness of the light can be enhanced by the polarizing beam splitter. Passing the light beam through the first compression prism and the second compression prism in sequence can achieve two compressions of the light beam on the one hand, and on the other hand, can more accurately adjust the direction and position of the light beam. The use of a focusing mirror has a high transmittance and can maintain a high energy transmission efficiency during light transmission. The focusing mirror can achieve precise focal length adjustment by adjusting the position or changing the curvature to form a focal light spot.

[0011] Preferably, the light beam refracted by the polarization beam splitter vertically passes through the incident surface of the first compression prism; the light beam refracted by the first compression prism vertically passes through the incident surface of the second compression prism.

[0012] By adopting the above technical solution, when the light beam is incident vertically, the incident angle is zero, so that the light beam does not reflect at the incident surface, which can reduce the energy loss of the light beam and ensure that more light is transmitted to the first compression prism for compression.

[0013] Preferably, the first optical path component includes 6 optical path units 1, and the optical path units 1 form 6 optical paths that pass through the polarization beam splitter accordingly; the second optical path component includes 6 optical path units 2, and the optical path units 2 form 6 optical paths that pass through the combining reflector and the polarization beam splitter in sequence; the 6 optical paths formed by the optical path unit 1 and the 6 optical paths formed by the optical path unit 2 overlap at the polarization beam splitter to form 6 optical paths.

[0014] By adopting the above technical solution, 12 light paths are overlapped to form 6 light paths, which, on the one hand, increases the density of the light beam again, which is beneficial to improving the accuracy of the light beam; on the other hand, reduces the area of ​​the light beam when it enters the first compression prism, thereby reducing the volume of the first compression prism, increasing the flexibility of the device and improving the convenience of adjusting the first compression prism, so that the direction and position of the light beam can be controlled more accurately.

[0015] Preferably, one of the optical path units comprises a first laser diode, a first collimator lens assembly and a first reflector, and the light beam emitted by the first laser diode passes through the first collimator lens assembly and the first reflector in sequence and corresponds to the polarization beam splitter.

[0016] Preferably, one of the optical path units 2 comprises a second laser diode, a second collimating lens assembly and a second reflector, and the light beam emitted by the second laser diode passes through the second collimating lens assembly and the second reflector in sequence and corresponds to the combining reflector.

[0017] By adopting the above technical solution, the light beam emitted by the first laser diode and the second laser diode can make the light beam highly directional, so that the energy of the light spot is more concentrated. The first reflector and the second reflector can change the propagation direction of the light beam, which is conducive to the concentration of the light beam. The first collimator lens assembly and the second collimator lens assembly can ensure the quality of the collimated light beam, improve the light transmittance and collimation efficiency.

[0018] Preferably, the polarization beam splitter is further provided with a polarizing plate, and the six light paths emitted by the optical path unit 1 pass through the polarizing plate and the polarization beam splitter in sequence.

[0019] By adopting the above technical solution, the establishment of the polarizer can convert the non-linear polarized light in the light beam into linear polarized light, thereby increasing the concentration effect of the light beam.

[0020] Beneficial effects of the utility model:

[0021] 1. In the present application, the double-row branching and light-combining laser optical path can form two rows of optical paths at the same time by using the first optical path component and the second optical path component, thereby strengthening the energy of the light in the optical path to achieve the purpose of obtaining a more concentrated light spot. The relative arrangement of the first optical path component and the second optical path component can more conveniently concentrate the two rows of optical paths into one optical path. By using a combining reflector and a polarizing beam splitter to combine the optical paths, the brightness of the light can be enhanced through the polarizing beam splitter. Passing the light beam through the first compression prism and the second compression prism in sequence can achieve two compressions of the light beam on the one hand, and on the other hand, can more accurately adjust the direction and position of the light beam;

[0022] 2. The double-row split-light laser light path in this application can ensure the quality of the collimated beam, improve the light transmittance and collimation efficiency while changing the direction of the beam by using the first collimator lens assembly and the first reflector;

[0023] 3. The double-row split-and-combined laser optical path in this application is relatively simple in design by using a focusing mirror, which has a low manufacturing cost and is easy to obtain. The focusing mirror has a high transmittance and can maintain a high energy transmission efficiency during light transmission.

[0024] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Schematic diagram of the overall structure of the utility model.

[0026] Figure 2 : A top view of the overall structure of the utility model.

[0027] Figure 3 : The utility model Figure 1 Enlarged view of part A.

[0028] Figure 4 : The utility model Figure 1 Enlarged view of part B.

[0029] Figure numerals: 1. first laser diode; 2. first collimator lens assembly; 3. first reflector; 4. second laser diode; 5. second collimator lens assembly; 6. second reflector; 7. polarizer; 8. combining reflector; 9. polarization beam splitter; 10. first compression prism; 11. second compression prism; 12. focusing lens. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Please refer to Figure 1-4 The present application discloses a double-row branching and light-combining laser optical path. The double-row branching and light-combining laser optical path includes a first optical path component and a second optical path component, the first optical path component and the second optical path component are arranged opposite to each other, and the first optical path component and the second optical path component can emit multiple light beams, which are combined and compressed into one light beam to finally form the required focal spot. The utility model can be used in laser processing equipment, laser display and projection, laser communication system, laser treatment and other fields, which are not limited here.

[0032] The first optical path component is provided with a polarization beam splitter 9 at the transmitting end, and the light beam emitted by the first optical path component passes through the polarization beam splitter 9; the second optical path component is provided with a combining reflector 8, which is located on one side of the second optical path component and is used to reflect the light beam emitted from the second optical path component into the polarization beam splitter 9; the double-row branching and combining laser optical path also includes a first compression prism 10, a second compression prism 11 and a focusing lens 12, and the light path refracted from the polarization beam splitter 9 enters the incident surface of the first compression prism 10 and the incident surface of the second compression prism 11 vertically in sequence, which can realize the double compression of the light beam on the one hand, and can adjust the direction and position of the light beam more accurately on the other hand. The light beam refracted from the second compression prism 11 passes through the focusing lens 12. The focusing lens 12 has a high transmittance, which can enable the light to maintain a high energy transmission efficiency during transmission. This is conducive to merging and compressing the light beam to obtain a more concentrated and uniform light spot.

[0033] Specifically, the first optical path component has 6 optical path units, and the 6 optical path units emit parallel light beams in parallel. By arranging the 6 optical path units, on the one hand, the transmission and adjustment of the light path can be accurately controlled, thereby facilitating the merging of the light paths; on the other hand, the energy of the light beam can be enhanced.

[0034] The optical path unit 1 includes a first laser diode 1, a first collimator lens assembly 2 and a first reflector 3. The emission end of the first laser diode 1 corresponds to the first collimator lens assembly 2. The first laser diode 11 is used to emit laser light. The laser light emitted by the first laser diode 1 passes through the first collimator lens assembly 2 and the first reflector 3 in sequence. The light beam emitted by the first laser diode 1 enters the first collimator lens assembly 2 vertically, so that the light beam emitted by the first laser diode 1 can pass through the first collimator lens assembly 2 completely, so as to maximize the utilization of the energy of the light beam. The first reflector 3 is located at a position where the first collimator lens assembly 2 is far away from the first laser diode 1, and the first reflector 3 is tilted relative to the first collimator lens assembly 2, so that the first reflector 3 can change the direction of the light beam passing through the first collimator lens assembly 2 by reflection.

[0035] It is worth noting that the six first reflectors 3 are staggered so that the six first reflectors 3 can respectively direct the six light beams reflected from the first collimating lens assembly 2 to the same direction. The direction of the straight line of the six first reflectors 3 is not parallel to the direction of the light reflected by the first reflectors 3.

[0036] It is worth noting that the second optical path assembly also includes six optical path units 2, and the six optical path units 2 include a second laser diode 4, a second collimating lens assembly 5 and a second reflector 6. The structural relationship of the optical path unit 2 refers to that of the optical path unit 1. And the directions of the light reflected by the first reflector 3 and the second reflector 6 are the same.

[0037] The first optical path component is provided with a polarizer 7, which is located in the middle of the first reflector 3 and the polarization beam splitter 9. The polarizer 7 is placed vertically to the light beam refracted by the first reflector 3, and all the light beams emitted by the first reflector 3 pass through the polarizer 7. The polarizer 7 can absorb other natural light, thereby once again increasing the concentration effect of the light beam. The light beam passing through the polarizer 7 passes through the polarization beam splitter 9 again, which can convert the non-linear polarized light in the light beam into linear polarized light, thereby further increasing the density of the light beam. The combining reflector 8 reflects the 6 light beams reflected from the second reflector 6 into the polarization beam splitter 9, thereby merging the 6 light beams reflected from the first reflector 3 and the 6 light beams reflected from the second reflector 6 into 6 light beams, further increasing the energy of the light beam, so that the formed light spot is more concentrated.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A double-row branching and combining laser optical path, comprising a first optical path component and a second optical path component, wherein the first optical path component and the second optical path component are arranged opposite to each other, characterized in that: It also includes a combining reflector (8), a polarization beam splitter (9), a first compression prism (10) and a second compression prism (11), wherein the light beam emitted by the first light path component corresponds to the polarization beam splitter (9), and the light beam emitted by the second light path component corresponds to the combining reflector (8); The combining reflector (8) is used to reflect the light beam emitted by the second optical path component to the polarization beam splitter (9), and the light beam refracted from the polarization beam splitter (9) passes through the first compression prism (10) and the second compression prism (11) in sequence; The double-row branching and light-combining laser light path also includes a focusing lens (12), which is located on a side of the second compression prism (11) away from the first compression prism (10), and the light beam refracted from the second compression prism (11) passes through the focusing lens (12).

2. A double-row split-and-combined laser optical path according to claim 1, characterized in that: The light beam refracted by the polarization beam splitter (9) vertically passes through the incident surface of the first compression prism (10); and the light beam refracted by the first compression prism (10) vertically passes through the incident surface of the second compression prism (11).

3. A double-row split-and-combined laser optical path according to claim 1, characterized in that: The first optical path component comprises six optical path units one, the optical path units one forming six optical paths correspondingly passing through a polarization beam splitter (9), the second optical path component comprises six optical path units two, the optical path units two forming six optical paths sequentially passing through the combining reflector (8) and the polarization beam splitter (9), the six optical paths formed by the optical path unit one and the six optical paths formed by the optical path unit two being combined and overlapped at the polarization beam splitter (9) to form six optical paths.

4. A double-row branching and combining laser optical path according to claim 3, characterized in that: One of the optical path units comprises a first laser diode (1), a first collimator lens assembly (2) and a first reflector (3); a light beam emitted by the first laser diode (1) passes through the first collimator lens assembly (2) and the first reflector (3) in sequence and corresponds to the polarization beam splitter (9).

5. A double-row branching and combining laser optical path according to claim 3 or 4, characterized in that: One of the optical path units 2 comprises a second laser diode (4), a second collimator lens assembly (5) and a second reflector (6); the light beam emitted by the second laser diode (4) passes through the second collimator lens assembly (5) and the second reflector (6) in sequence and corresponds to the combining reflector (8).

6. A double-row branching and combining laser optical path according to claim 3, characterized in that: The polarization beam splitter (9) is also provided with a polarizing plate (7), and the six light paths emitted by the optical path unit 1 pass through the polarizing plate (7) and the polarization beam splitter (9) in sequence.

Images