Optical path converter

Abstract

The invention relates to the technical field of light path coupling, and particularly discloses a light path converter which comprises a shell, a lens, a light splitting plane mirror, a measuring light source and an indicating light source. One end of the shell is provided with a mounting port, the lens is mounted on the inner wall of the mounting port, the measuring light source and the indicating light source are mounted in the shell, the measuring light source directly faces the middle of the lens, and the indicating light source is perpendicular to the measuring light source; and the light splitting plane mirror is arranged in the shell and forms an angle of 45 degrees with the optical axes of the indicating light source and the measuring light source. The method has the effect of improving the accuracy of the measured data.

Description

Technical Field

[0001] The invention relates to the technical field of optical path coupling, and in particular to an optical path converter. Background Art

[0002] In the related technology, when measuring with invisible light (mostly near-infrared laser), the scene object at the same viewpoint is generally measured with invisible light, and the system adds additional visible light for indication, thereby obtaining measurement parameter information of the measurement target, such as distance, temperature and other parameters.

[0003] However, in the related art measurement method, when the scene object is non-vertically incident or the measurement object has a curved surface or an inclined surface, the measurement object indicated by the visible light and the target measured by the infrared light will produce an error on the optical axis, thereby causing inaccurate measurement data. Summary of the invention

[0004] In order to improve the accuracy of measurement data, the present application provides an optical path converter.

[0005] The optical path converter provided in this application adopts the following technical solution: A light path converter comprises a housing, a lens, a beam splitter plane mirror, a measuring light source and an indicating light source; a mounting opening is arranged at one end of the housing, the lens is mounted on the inner wall of the mounting opening, the measuring light source and the indicating light source are mounted in the housing, the measuring light source is directly opposite to the middle position of the lens, and the optical axes of the indicating light source and the measuring light source are perpendicular to each other; the beam splitter plane mirror is mounted in the housing, and the beam splitter plane mirror is arranged at 45° to the optical axes of the indicating light source and the measuring light source.

[0006] Optionally, the shell includes a first shell and a second shell, and the first shell and the second shell are snap-fitted together; a mounting head is installed in the shell, the mounting head includes a mounting ring and a heat sink, the outer circumferential surface of the mounting ring is a sloped surface, the mounting ring is arranged on the inner wall of the mounting opening, the outer circumferential surface of the mounting ring is fitted against the inner wall of the mounting opening, and the slope of the mounting ring faces the outside of the shell; the lens is installed in the mounting ring, and a retaining ring is connected to the inner wall of one end of the mounting ring located outside the shell, and the retaining ring is fitted against the side of the lens facing the shell; one end of the heat sink is connected to the end surface of the mounting ring close to the inside of the shell, and the heat sink is located at the bottom of the mounting ring.

[0007] Optionally, a thermally conductive gasket is adhered to the inner wall of the mounting ring, an annular groove is provided on the side of the retaining ring close to the lens, one end of the thermally conductive gasket is adhered to the inner wall of the annular groove, and the side surface of the lens is attached to the side surface of the thermally conductive gasket.

[0008] Optionally, two heat dissipation fin groups are connected to the outer side of the heat dissipation plate, one of the heat dissipation fin groups is located in the first shell, and the other heat dissipation fin group is located in the second shell.

[0009] Optionally, the measuring light source jacket is provided with a first mounting shell, and the indicating light source jacket is provided with a second mounting shell, and the first mounting shell and the second mounting shell are both installed in the outer shell; the first mounting shell is connected to the first connecting plate and the second connecting plate at both ends of a side surface, and the first connecting plate and the second connecting plate are bent 90° toward the second mounting shell at one end away from the first mounting shell and connected to the side surface of the second mounting shell; a plurality of cooling fins are arranged between the first connecting plate and the second connecting plate, one end of the cooling fin is connected to the side surface of the first mounting shell, and the other end of the cooling fin is connected to the side surface of the second mounting shell.

[0010] Optionally, a first mounting plate is connected to a side of the second mounting shell away from the heat sink fins, and four first heat pipes are connected to a side of the first mounting plate away from the second mounting shell, wherein two of the first heat pipes are connected to the side of one of the heat sink fin groups, and the other two of the first heat pipes are connected to the side of another heat sink fin group; a second mounting plate is connected to a side of two heat sink fin groups away from the first heat pipes, and the second connecting plate is connected to an outer side of the heat sink; one end of two second heat pipes are connected to both sides of the first mounting shell, and the other end of the second heat pipe is connected to the side of the second mounting shell, and the second heat pipes are laid flat on the side of the heat sink fins.

[0011] Optionally, a third mounting plate is connected to the side of the first mounting plate close to the second mounting plate, one end of the third mounting plate extends between the two groups of the heat dissipation fin groups, a cooling fan is inserted between the two groups of the heat dissipation fin groups, and the outer frame of the cooling fan is pressed against the side of the second mounting plate and the end face of the third mounting plate.

[0012] Optionally, the mounting head, the heat sink fin group, the first mounting shell, the second mounting shell, the first connecting plate, the second connecting plate and the first mounting plate are all of an integrated design.

[0013] Optionally, the inner walls of the first shell and the second shell are both connected to a support plate, and the support plate is attached to the second heat pipe; the inner walls of the first shell and the second shell are both connected to a first positioning plate, a second positioning plate and a third positioning plate, the side surface of the first positioning plate is provided with a first slot for inserting the first mounting plate, and the side surface of the second positioning plate is provided with a second slot for inserting the right-angle corner of the second connecting plate; the third positioning plate is located at the top of the first mounting shell, and the side surface of the third positioning plate is provided with a third slot for inserting the side edge of the first mounting shell.

[0014] Optionally, the inner wall of the first shell and the inner wall of the second shell are both connected with a U-shaped channel, the U-shaped channel is aligned with the lens, and when the first shell and the second shell are buckled, the two sides of the U-shaped channels fit together, the upper inner wall and the lower inner wall of the U-shaped channel are both connected with a card block, the line between the two card blocks is 45° with the optical axis of the measuring light source, and the sides of the card blocks close to each other are provided with card slots, and the splitter plane mirror is inserted into the card slots; the outer side of the bottom of the U-shaped channel is connected with a U-shaped branch pipe, the indicating light source is inserted into the U-shaped branch pipe, and the measuring light source is plugged into the end of the U-shaped channel away from the lens.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The invisible light measurement light source emits laser, which passes through the beam splitter plane mirror and shoots toward the lens. The visible light indicator light source emits laser, which is reflected by the beam splitter plane mirror at 45° and then shoots toward the lens. The optical axis of the visible light indicator light source and the optical axis of the invisible light indicator light source are coupled by the beam splitter plane mirror, and the two optical axes are merged into one and irradiated onto the surface of the target object through the lens. When the target object is non-vertically incident or the measurement object has a curved or inclined surface, since the two optical axes are merged into one, no error on the optical axis will be generated during measurement, thereby improving the accuracy of the measurement data. 2. When the laser passes through the lens for a long time, the lens will absorb part of the laser energy and convert it into heat. Moreover, when used in hot weather, the lens will quickly accumulate heat, and the focal length of the lens will change with the change of temperature. For some high-precision or long-distance measurements, the change of lens temperature will have a significant impact on the distance measurement results. When the lens generates heat, the lens transfers the heat to the arc heat sink through the aluminum mounting ring, so that the temperature of the lens can be reduced, ensuring the normal use of the lens function; 3. The lens can be pre-installed in the mounting ring, the invisible light measurement light source can be installed in the first mounting shell, and the visible light indicator light source can be installed in the second mounting shell; through the pre-set first mounting shell, second mounting shell and mounting head position, after the lens, invisible light measurement light source and visible light indicator light source are installed, the optical path can be aligned, and there is no need to manually adjust the invisible light measurement light source and the visible light indicator light source to be vertical. At the same time, the optical path of the invisible light measurement light source is directly opposite to the lens, so that the installation of the optical path converter is convenient; 4. The first shell and the second shell are provided with a first positioning plate, a second positioning plate and a third positioning plate. Through the provision of the first positioning plate, the second positioning plate and the third positioning plate, the integrated mounting head, the heat dissipation fin group, the first mounting shell, the second mounting shell, the first connecting plate, the second connecting plate and the first mounting plate can be accurately positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of the optical path converter of the embodiment of the present application; Figure 2 This is a schematic diagram of the internal structure of the optical path converter according to an embodiment of the present application; Figure 3 is a schematic structural diagram of the first shell of an embodiment of the present application; Figure 4 This is a schematic diagram of the internal parts structure of the optical path converter according to an embodiment of the present application; Figure 5 It is a schematic diagram of the exploded structure of the lens, mounting ring, and thermally conductive gasket of the embodiment of the present application; Figure 6 This is a schematic structural diagram of the internal parts of the optical path converter according to an embodiment of the present application from another perspective; Figure 7 is a schematic diagram of the internal structure of the optical path converter of the embodiment of the present application from another perspective; Figure 8 yes Figure 7 Schematic diagram of the enlarged structure of part A.

[0017] Description of reference numerals: 1. Shell; 101. Mounting port; 11. First shell; 111. Support plate; 112. First positioning plate; 1121. First slot; 113. Second positioning plate; 1131. Second slot; 114. Third positioning plate; 1141. Third slot; 12. Second shell; 13. Lens; 14. Beam splitter; 15. Measuring light source; 16. Indicating light source; 2. Mounting head; 21. Mounting ring; 211. Retaining ring; 2111. Ring Groove; 212, thermally conductive gasket; 22, heat sink; 23, heat sink fin group; 3, first mounting shell; 31, first connecting plate; 32, second connecting plate; 33, heat sink fin; 4, second mounting shell; 41, first mounting plate; 42, first heat pipe; 43, second mounting plate; 44, second heat pipe; 45, third mounting plate; 46, cooling fan; 5, U-shaped channel; 51, block; 511, slot; 52, U-shaped branch pipe; 53, clamping block. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-8 This application is described in further detail.

[0019] The present application embodiment discloses an optical path converter. Figure 1-8The optical path converter includes a shell 1, a lens 13, a spectroscopic plane mirror 14, an invisible light measuring light source 15 and a visible light indicating light source 16; a mounting port 101 is provided at one end of the shell 1, the lens 13 is mounted on the inner wall of the mounting port 101, the invisible light measuring light source 15 and the visible light indicating light source 16 are mounted in the shell 1, the invisible light measuring light source 15 is directly opposite to the middle position of the lens 13, and the optical axes of the visible light indicating light source 16 and the invisible light measuring light source 15 are perpendicular to each other; the spectroscopic plane mirror 14 is mounted in the shell 1, the optical axes of the spectroscopic plane mirror 14, the visible light indicating light source 16 and the invisible light measuring light source 15 are arranged at 45°, the spectroscopic plane mirror 14 is coated with a 45° incidence, and the visible light band is fully reflected and the invisible light band is fully transparent.

[0020] The invisible light measurement light source 15 emits a laser, which passes through the beam splitter plane mirror 14 and is emitted to the lens 13. The visible light indication light source 16 emits a laser, which is reflected 45° by the beam splitter plane mirror 14 and then emitted to the lens 13. The optical axis of the visible light indication light source 16 and the optical axis of the invisible light indication light source 16 are coupled through the beam splitter plane mirror 14, and the two optical axes are merged into one and irradiated onto the surface of the target object through the lens 13. When the target object is non-vertically incident or the measured object has a curved surface or an inclined surface, since the two optical axes are merged into one, no error on the optical axis will be generated during measurement, thereby improving the accuracy of the measurement data.

[0021] The shell 1 includes a first shell 11 and a second shell 12, which are interlocked and detachably connected; a mounting head 2 is installed in the shell 1, and the mounting head 2 is made of aluminum material; the mounting head 2 includes a mounting ring 21 and a curved heat dissipation plate 22, the outer peripheral surface of the mounting ring 21 is a sloped surface, the mounting ring 21 is arranged on the inner wall of the mounting opening 101, the outer peripheral surface of the mounting ring 21 is attached to the inner wall of the mounting opening 101, and the slope of the mounting ring 21 faces the outside of the shell 1; the lens 13 is installed in the mounting ring 21, and a retaining ring 211 is connected to the inner wall of one end of the mounting ring 21 located outside the shell 1, and the retaining ring 211 is attached to the side of the lens 13 facing the shell 1; one end of the curved heat dissipation plate 22 is connected to the end surface of the mounting ring 21 close to the inside of the shell 1, and the curved heat dissipation plate 22 is located at the bottom of the mounting ring 21.

[0022] When the laser passes through the lens 13 for a long time, the lens 13 will absorb a part of the laser energy and convert it into heat. Furthermore, when used in hot weather, the lens 13 will quickly accumulate heat, and the focal length of the lens 13 will change with the change of temperature. For some high-precision or long-distance measurements, the change of the temperature of the lens 13 will have a significant impact on the distance measurement result. When the lens 13 generates heat, the lens 13 transfers the heat to the arc-shaped heat sink 22 through the aluminum mounting ring 21, so that the temperature of the lens 13 can be reduced, thereby ensuring the normal use of the lens 13 function.

[0023] A thermally conductive gasket 212 is pasted on the inner wall of the mounting ring 21, and an annular groove 2111 is provided on the side of the retaining ring 211 close to the lens 13. One end of the thermally conductive gasket 212 is pasted on the inner wall of the annular groove 2111, and the side of the lens 13 is attached to the side of the thermally conductive gasket 212; the thermally conductive gasket 212 can accelerate the transfer of heat from the lens 13 to the mounting ring 21, and at the same time, the thermally conductive gasket 212 can avoid direct contact between the mounting ring 21 and the lens 13, thereby reducing the friction between the lens 13 and the inner wall of the mounting ring 21 when installing.

[0024] Two cooling fin groups 23 are connected to the outer side of the arc-shaped heat sink 22, one cooling fin group 23 is located in the first shell 11, and the other cooling fin group 23 is located in the second shell 12; when the heat of the lens 13 is transferred to the arc-shaped heat sink 22, it is then transferred to the two cooling fin groups 23 through the arc-shaped heat sink 22, thereby improving the heat dissipation efficiency of the lens 13.

[0025] The invisible light measuring light source 15 is provided with a first mounting shell 3, and the visible light indicating light source 16 is provided with a second mounting shell 4. The first mounting shell 3 and the second mounting shell 4 are both installed in the outer shell 1; the first mounting shell 3 has two ends connected to a first connecting plate 31 and a second connecting plate 32 at one end away from the first mounting shell 3, and the first connecting plate 31 and the second connecting plate 32 are bent 90° toward the second mounting shell 4 at one end away from the first mounting shell 3 and connected to the side of the second mounting shell 4; a plurality of heat dissipation fins 33 are provided between the first connecting plate 31 and the second connecting plate 32, one end of the heat dissipation fin 33 is connected to the side of the first mounting shell 3, and the other end of the heat dissipation fin 33 is connected to the side of the second mounting shell 4; the first mounting shell 3, the second mounting shell 4, the first connecting plate 31 and the second connecting plate 32 are all made of aluminum material.

[0026] When the invisible light measuring light source 15 and the visible light indicating light source 16 are working, heat is generated. The invisible light measuring light source 15 transfers the heat to the first mounting shell 3, and the visible light indicating light source 16 transfers the heat to the second mounting shell 4. The first mounting shell 3 and the second mounting shell 4 transfer the heat to the heat dissipation fins 33 for heat dissipation, which is beneficial to reducing the working temperature of the invisible light measuring light source 15 and the visible light indicating light source 16.

[0027] A first mounting plate 41 is connected to the side of the second mounting shell 4 away from the heat dissipation fins 33, and four first heat pipes 42 are connected to the side of the first mounting plate 41 away from the second mounting shell 4, wherein two first heat pipes 42 are connected to the side of one of the heat dissipation fin groups 23, and the other two first heat pipes 42 are connected to the side of the other heat dissipation fin group 23; a second mounting plate 43 is connected to one side of the two heat dissipation fin groups 23 away from the first heat pipe 42, and the second connecting plate 32 is connected to the outer side of the arc-shaped heat dissipation plate 22; one end of two second heat pipes 44 are connected to both sides of the first mounting shell 3, and the other end of the second heat pipe 44 is connected to the side of the second mounting shell 4, and the second heat pipe 44 is laid flat on the side of the heat dissipation fin 33; the first mounting plate 41 and the second connecting plate 32 are both aluminum plates.

[0028] The heat dissipation fins 33 transfer heat to the second heat pipes 44 , the second heat pipes 44 transfer heat to the first mounting plate 41 , the first mounting plate 41 transfers heat to the first heat pipes 42 , and the second heat pipes 44 transfer heat to the two groups of heat dissipation fins 23 for heat dissipation.

[0029] A third mounting plate 45 is connected to the side of the first mounting plate 41 close to the second mounting plate 43. One end of the third mounting plate 45 extends between the two groups of heat dissipation fin groups 23. A cooling fan 46 is inserted between the two groups of heat dissipation fin groups 23. The outer frame of the cooling fan 46 is pressed against the side of the second mounting plate 43 and the end face of the third mounting plate 45.

[0030] The heat generated by the lens 13, the invisible light measuring light source 15 and the visible light indicating light source 16 is collected in the two groups of heat dissipation fins 23. The heat dissipation fan 46 works to take away the heat of the two groups of heat dissipation fins 23 through alternating cold and hot air flows, thereby achieving rapid heat dissipation of the lens 13, the invisible light measuring light source 15 and the visible light indicating light source 16, and improving the heat dissipation efficiency of the lens 13, the invisible light measuring light source 15 and the visible light indicating light source 16.

[0031] The mounting head 2, the heat dissipation fin group 23, the first mounting shell 3, the second mounting shell 4, the first connecting plate 31, the second connecting plate 32 and the first mounting plate 41 are all of an integrated design; the lens 13 can be pre-installed in the mounting ring 21, the invisible light measuring light source 15 can be installed in the first mounting shell 3, and the visible light indicating light source 16 can be installed in the second mounting shell 4; through the pre-set positions of the first mounting shell 3, the second mounting shell 4 and the mounting head 2, after the lens 13, the invisible light measuring light source 15 and the visible light indicating light source 16 are installed, the optical path is aligned, and there is no need to manually adjust the invisible light measuring light source 15 and the visible light indicating light source 16 to be vertical. At the same time, the optical path of the invisible light measuring light source 15 is directly opposite to the lens 13, thereby realizing the convenience of installing the optical path converter.

[0032] The inner walls of the first shell 11 and the second shell 12 are both connected with a support plate 111, and the support plate 111 is attached to the second heat pipe 44; the inner walls of the first shell 11 and the second shell 12 are both connected with a first positioning plate 112, a second positioning plate 113 and a third positioning plate 114, the side of the first positioning plate 112 is provided with a first slot 1121 for inserting the first mounting plate 41, and the side of the second positioning plate 113 is provided with a second slot 1131 for inserting the second connecting plate 32 at a right angle; the third positioning plate 114 is located at the top of the first mounting shell 3, and the side of the third positioning plate 114 is provided with a third slot 1141 for inserting the side of the first mounting shell 3.

[0033] A first positioning plate 112, a second positioning plate 113, and a third positioning plate 114 are arranged in the first shell 11 and the second shell 12. By setting the first positioning plate 112, the second positioning plate 113, and the third positioning plate 114, the integrated mounting head 2, the heat dissipation fin group 23, the first mounting shell 3, the second mounting shell 4, the first connecting plate 31, the second connecting plate 32, and the first mounting plate 41 can be accurately positioned.

[0034] The inner wall of the first shell 11 and the inner wall of the second shell 12 are both detachably connected with a U-shaped channel 5 by bolts, and the U-shaped channel 5 is aligned with the lens 13. When the first shell 11 and the second shell 12 are buckled, the two sides of the U-shaped channels 5 fit together, and the upper inner wall and the lower inner wall of the U-shaped channel 5 are connected with a clamping block 51. The connection line between the two clamping blocks 51 is 45° with the optical axis of the invisible light measurement light source 15. The sides of the clamping blocks 51 close to each other are provided with a clamping groove 511, and the splitter plane mirror 14 is inserted into the clamping groove 511; the outer side of the bottom of the U-shaped channel 5 is connected with a U-shaped branch pipe 52, the visible light indicating light source 16 is inserted into the U-shaped branch pipe 52, and the invisible light measurement light source 15 is plugged into the end of the U-shaped channel 5 away from the lens 13.

[0035] When assembling the beam combiner, the beam splitter plane mirror 14 is first inserted into the card slot 511, and then the integrated mounting head 2, the heat dissipation fin group 23, the first mounting shell 3, the second mounting shell 4, the first connecting plate 31, the second connecting plate 32 and the first mounting plate 41 are installed. At this time, the beam splitter plane mirror 14 and the optical axes of the visible light indication light source 16 and the invisible light measurement light source 15 are at 45°, and there is no need to manually adjust the positions of the beam splitter plane mirror 14, the visible light indication light source 16 and the invisible light measurement light source 15, thereby improving the convenience of installation.

[0036] A pressing block 53 is connected to the side of the end of the U-shaped channel 5 close to the lens 13 . The end of the pressing block 53 close to the other U-shaped channel 5 is chamfered. The pressing block 53 is pressed against the side of the lens 13 close to the U-shaped channel 5 .

[0037] When the mounting head 2 is installed in the mounting opening 101, the mounting ring 21 is aligned with the mounting opening 101 of the first shell 11, and the mounting ring 21 is inserted into the mounting opening 101. At the same time, the mounting ring 21 contacts the chamfered surface of the clamping block 53, so that the clamping block 53 gradually contacts the lens 13, so that the clamping block 53 is pressed against the lens 13, and the clamping block 53 is used to press the lens 13 into the mounting ring 21, and the mounting ring 21 is pressed into the mounting opening 101.

[0038] The implementation principle of an optical path converter in an embodiment of the present application is as follows: an invisible light measurement light source 15 emits a laser, which passes through a beam splitter plane mirror 14 and is emitted toward a lens 13; a visible light indication light source 16 emits a laser, which is reflected 45° by the beam splitter plane mirror 14 and is emitted toward a lens 13; an optical axis of the visible light indication light source 16 and an optical axis of the invisible light indication light source 16 are coupled through the beam splitter plane mirror 14, and the two optical axes are merged into one and irradiated onto the surface of a target object through the lens 13; when the target object is non-vertically incident or the measured object has a curved surface or an inclined surface, since the two optical axes are merged into one, no error on the optical axis will be generated during measurement, thereby improving the accuracy of the measurement data.

[0039] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An optical path converter, characterized in that: The invention comprises a housing (1), a lens (13), a beam splitter plane mirror (14), a measuring light source (15) and an indicating light source (16); a mounting opening (101) is provided at one end of the housing (1); the lens (13) is mounted on the inner wall of the mounting opening (101); the measuring light source (15) and the indicating light source (16) are mounted in the housing (1); the measuring light source (15) faces the middle position of the lens (13); the optical axes of the indicating light source (16) and the measuring light source (15) are perpendicular to each other; the beam splitter plane mirror (14) is mounted in the housing (1); the optical axes of the beam splitter plane mirror (14) and the indicating light source (16) and the measuring light source (15) are arranged at 45 degrees.

2. The optical path converter according to claim 1, characterized in that: The housing (1) comprises a first housing (11) and a second housing (12), the first housing (11) and the second housing (12) being snap-fitted and connected; a mounting head (2) is installed in the housing (1), the mounting head (2) comprises a mounting ring (21) and a heat dissipation plate (22), the outer peripheral surface of the mounting ring (21) is a sloped surface, the mounting ring (21) is arranged on the inner wall of the mounting opening (101), the outer peripheral surface of the mounting ring (21) is in contact with the inner wall of the mounting opening (101), and the mounting The slope of the ring (21) faces the outside of the housing (1); the lens (13) is installed in the mounting ring (21); the inner wall of one end of the mounting ring (21) located outside the housing (1) is connected to a retaining ring (211); the retaining ring (211) is attached to the side of the lens (13) facing the housing (1); one end of the heat sink (22) is connected to the end surface of the mounting ring (21) close to the inside of the housing (1); the heat sink (22) is located at the bottom of the mounting ring (21).

3. The optical path converter according to claim 2, characterized in that: A thermally conductive gasket (212) is adhered to the inner wall of the mounting ring (21), an annular groove (2111) is provided on the side of the retaining ring (211) close to the lens (13), one end of the thermally conductive gasket (212) is adhered to the inner wall of the annular groove (2111), and the side surface of the lens (13) is attached to the side surface of the thermally conductive gasket (212).

4. The optical path converter according to claim 2, characterized in that: Two heat dissipation fin groups (23) are connected to the outer side of the heat dissipation plate (22), one of the heat dissipation fin groups (23) is located in the first shell (11), and the other of the heat dissipation fin groups (23) is located in the second shell (12).

5. The optical path converter according to claim 4, characterized in that: The measuring light source (15) is provided with a first mounting shell (3) on its outer casing, and the indicating light source (16) is provided with a second mounting shell (4) on its outer casing, and the first mounting shell (3) and the second mounting shell (4) are both mounted in the outer casing (1); a first connecting plate (31) and a second connecting plate (32) are connected to two ends of a side surface of the first mounting shell (3); one end of the first connecting plate (31) and the second connecting plate (32) away from the first mounting shell (3) is bent 90 degrees toward the second mounting shell (4) and connected to the side surface of the second mounting shell (4); a plurality of heat dissipation fins (33) are provided between the first connecting plate (31) and the second connecting plate (32), one end of the heat dissipation fin (33) is connected to the side surface of the first mounting shell (3), and the other end of the heat dissipation fin (33) is connected to the side surface of the second mounting shell (4).

6. The optical path converter according to claim 5, characterized in that: The side of the second mounting shell (4) away from the heat dissipation fins (33) is connected to a first mounting plate (41), and the side of the first mounting plate (41) away from the second mounting shell (4) is connected to four first heat pipes (42), wherein two of the first heat pipes (42) are connected to the side of one of the heat dissipation fin groups (23), and the other two of the first heat pipes (42) are connected to the side of another heat dissipation fin group (23); the side of the two heat dissipation fin groups (23) away from the first heat pipes (42) is connected to a second mounting plate (43), and the second connecting plate (32) is connected to the outer side of the heat dissipation plate (22); one end of two second heat pipes (44) are connected to both sides of the first mounting shell (3), and the other end of the second heat pipe (44) is connected to the side of the second mounting shell (4), and the second heat pipe (44) is laid flat on the side of the heat dissipation fin (33).

7. The optical path converter according to claim 6, characterized in that: A third mounting plate (45) is connected to the side of the first mounting plate (41) close to the second mounting plate (43); one end of the third mounting plate (45) extends between the two groups of heat dissipation fin groups (23); a heat dissipation fan (46) is inserted between the two groups of heat dissipation fin groups (23); and an outer frame of the heat dissipation fan (46) is pressed against the side of the second mounting plate (43) and the end face of the third mounting plate (45).

8. The optical path converter according to claim 6, characterized in that: The mounting head (2), the heat dissipation fin group (23), the first mounting shell (3), the second mounting shell (4), the first connecting plate (31), the second connecting plate (32) and the first mounting plate (41) are all of an integrated design.

9. The optical path converter according to claim 8, characterized in that: The inner walls of the first shell (11) and the second shell (12) are both connected with a support plate (111), and the support plate (111) is attached to the second heat pipe (44); the inner walls of the first shell (11) and the second shell (12) are both connected with a first positioning plate (112), a second positioning plate (113) and a third positioning plate (114); the first positioning plate (112) is provided with a first slot (1121) for inserting the first mounting plate (41) on the side surface, and the second positioning plate (113) is provided with a second slot (1131) for inserting the second connecting plate (32) at a right angle on the side surface; the third positioning plate (114) is located at the top of the first mounting shell (3), and the third positioning plate (114) is provided with a third slot (1141) for inserting the side edge of the first mounting shell (3) on the side surface.

10. The optical path converter according to claim 9, characterized in that: The inner wall of the first shell (11) and the inner wall of the second shell (12) are both connected with a U-shaped channel (5), the U-shaped channel (5) is aligned with the lens (13), and when the first shell (11) and the second shell (12) are buckled, the two sides of the U-shaped channels (5) are in contact with each other, the upper inner wall and the lower inner wall of the U-shaped channel (5) are both connected with a clamping block (51), the connection line between the two clamping blocks (51) and the optical axis of the measuring light source (15) are at 45 degrees, and the sides of the clamping blocks (51) close to each other are both provided with a clamping groove (511), and the splitting plane mirror (14) is inserted into the clamping groove (511); the outer side surface of the bottom of the U-shaped channel (5) is connected with a U-shaped branch pipe (52), the indicating light source (16) is inserted into the U-shaped branch pipe (52), and the measuring light source (15) is plugged into the end of the U-shaped channel (5) away from the lens (13).

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