Laser dazzling TO packaging single-tube LD beam combining device

Abstract

The invention discloses a laser dazzling TO packaging single-tube LD beam combining device. The laser dazzling TO packaging single-tube LD beam combining device comprises a device bottom plate, a light source unit, a polarization beam combining unit and a focusing coupling unit. The light source unit, the polarization beam combining unit and the focusing coupling unit are arranged on the top face of the device bottom plate. The green light high-power output device has the beneficial effects that through space beam combination of the light source unit and polarization beam combination of the polarization beam combination unit, green light high-power output under the small size can be achieved to the maximum extent.

Description

Technical Field

[0001] The present invention relates to the field of dazzling lasers, and in particular, to a laser dazzling TO package single-tube LD beam combining device. Background Art

[0002] A dazzling laser is a device that can temporarily disable a living target without causing fatal harm by acting on the eyes of the living target with a laser. Currently, existing dazzling lasers include: green light TO package single-tube LD. The disadvantage is that the power of the green light TO package single-tube LD is relatively low, resulting in a relatively limited action distance of the dazzling laser. Summary of the Invention

[0003] The object of the present invention is to solve the problem of the relatively limited action distance of existing dazzling lasers, and to provide a new type of laser dazzling TO package single-tube LD beam combining device.

[0004] To achieve the above object, a technical solution provided by the present invention is: a laser dazzling TO package single-tube LD beam combining device includes: a device bottom plate, a light source unit, a polarization beam combining unit, and a focusing and coupling unit. The top surface of the device bottom plate has the light source unit, the polarization beam combining unit, and the focusing and coupling unit. The light source unit has two light source modules. One of the light source modules is arranged along the positive Y-axis direction with respect to the other light source module. The polarization beam combining unit has a half-wave plate, a light source right-angle reflector, and a polarization beam splitter cube. One of the light source modules, the half-wave plate, and the light source right-angle reflector are arranged along the positive X-axis direction. The other light source module and the polarization beam splitter cube are arranged along the positive X-axis direction. The light source right-angle reflector and the polarization beam splitter cube are arranged along the positive Y-axis direction. The output beams of the two light source modules are both emitted along the positive X-axis direction. The output beam of one of the light source modules passes through the half-wave plate and the light source right-angle reflector and is incident on one of the incident surfaces of the polarization beam splitter cube, and the output beam of the other light source module is incident on the other incident surface of the polarization beam splitter cube. The polarization beam splitter cube combines the output beams of the two light source modules to form a combined beam that is emitted towards the focusing and coupling unit.

[0005] As a preferred solution of the laser dazzling TO package single-tube LD beam combining device, the light source module has at least one light source component; the light source component has an LD light source board and an LD right-angle reflector group; the LD light source board has a TO package single-tube LD group, and the TO package single-tube LD in the TO package single-tube LD group corresponds one-to-one with the LD right-angle reflector in the LD right-angle reflector group; the output beam of the TO package single-tube LD in the TO package single-tube LD group passes through the LD right-angle reflector in the LD right-angle reflector group and is emitted along the positive X-axis direction.

[0006] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the Z-axis height of the TO-packaged single-tube LD in the TO-packaged single-tube LD group gradually decreases (or increases) along the X-axis direction; correspondingly, the Z-axis height of the LD right-angle mirror in the LD right-angle mirror group gradually decreases (or increases) along the X-axis direction.

[0007] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the light source module has two of the light source elements, the two light source elements are symmetrically arranged, and the LD right-angle mirrors in the two light source elements are attached to each other on the symmetry plane.

[0008] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the focusing and coupling unit has a focusing lens and an energy transmission optical fiber, and the combined light is focused by the focusing lens onto the energy transmission optical fiber.

[0009] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the focusing and coupling unit further has a fixed lens barrel, a lens movable seat, and an optical fiber mounting seat. The focusing lens is arranged at one end of the fixed lens barrel through the lens movable seat, and the lens movable seat is in threaded cooperation with the fixed lens barrel, so that the lens movable seat can displace along the fixed lens barrel to adjust the focal position of the focusing lens. The energy transmission optical fiber is arranged at the opposite end of the fixed lens barrel through the optical fiber mounting seat; wherein, the focal position falls on the core of the energy transmission optical fiber.

[0010] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the lens movable seat has movable seat teeth, and the fixed lens barrel has a barrel through-hole at the position of the movable seat teeth. The barrel through-hole is used to provide an operation space for displacing and locking the lens movable seat.

[0011] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, it further includes: an optical path deflection unit, which is between the polarization beam combining unit and the focusing and coupling unit, and the combined light of the polarization beam combining unit reaches the focusing and coupling unit through the optical path deflection unit.

[0012] As a preferred solution for the laser dazzling TO-packaged single-tube LD beam combining device, the optical path deflection unit has two deflection right-angle mirrors. The polarization beam splitting cube and one of the deflection right-angle mirrors are arranged along the positive Y-axis direction. The two light source modules, the other deflection right-angle mirror, the focusing lens and the energy transmission optical fiber of the focusing and coupling unit are arranged along the positive Y-axis direction. The two deflection right-angle mirrors are arranged along the negative X-axis direction.

[0013] Compared with the prior art, the beneficial effects of the present invention are at least as follows: Through the spatial beam combination of the light source unit and the polarization beam combination of the polarization beam combination unit, high-power green light output can be maximally achieved with a smaller volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the present invention.

[0015] Figure 2 It is a schematic structural diagram of the light source unit of the present invention.

[0016] Figure 3 It is a schematic structural diagram of the focusing and coupling unit of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] Please refer to Figure 1 , which shows a combined device for a laser dazzling TO package single-tube LD (green light LD).

[0019] The combined device for the laser dazzling TO package single-tube LD includes: a device bottom plate 1, a light source unit 2, a polarization beam combination unit 3, an optical path deflection unit 4, a focusing and coupling unit 5, etc. On the top surface of the device bottom plate 1, there are the light source unit 2, the polarization beam combination unit 3, the optical path deflection unit 4, and the focusing and coupling unit 5.

[0020] To reduce the alignment workload of the combined device for the laser dazzling TO package single-tube LD, the device bottom plate 1 can be configured with assembly references for the light source unit 2, the polarization beam combination unit 3, the optical path deflection unit 4, and the focusing and coupling unit 5.

[0021] To enable the heat generated by the light source unit 2 during operation to be better conducted to the device bottom plate 1, a thermal conductive silicone grease layer can be provided between the light source unit 2 and the device bottom plate 1.

[0022] The light source unit 2 has two light source modules 21 and 22. One of the light source modules 21 and the other light source module 22 are arranged along the positive Y-axis direction. The polarization beam combining unit 3 has a half-wave plate 31, a light source right-angle reflector 32, and a polarization beam splitting cube 33. One of the light source modules 21, the half-wave plate 31, and the light source right-angle reflector 32 are arranged along the positive X-axis direction. The other light source module 22 and the polarization beam splitting cube 33 are arranged along the positive X-axis direction. The light source right-angle reflector 32 and the polarization beam splitting cube 33 are arranged along the positive Y-axis direction. The output beams of the two light source modules 21 and 22 are emitted along the positive X-axis direction. The output beam of one of the light source modules 21 passes through the half-wave plate 31 and the light source right-angle reflector 32 and is incident on one of the incident surfaces of the polarization beam splitting cube 33. The output beam of the other light source module 22 is incident on the other incident surface of the polarization beam splitting cube 33. The polarization beam splitting cube 33 combines the output beams of the two light source modules to form a combined beam. The combined beam is emitted along the positive Y-axis direction.

[0023] Wherein, the half-wave plate 31 is used to change the polarization state of one of the light source modules 21, so that the output beam of one of the light source modules 21 passes through the light source right-angle reflector 32 and is reflected and then passes through the polarization beam splitting cube 33 and is emitted along the positive Y-axis direction. The output beam of the other light source module 22 passes through the beam splitting surface of the polarization beam splitting cube 33 and is emitted along the positive Y-axis direction.

[0024] Preferably, the half-wave plate 31 can be arranged on the device bottom plate 1 through a half-wave plate mounting seat. The mounting position and mounting angle of the half-wave plate mounting seat can be adjusted to adjust the mounting position and mounting angle of the half-wave plate 31.

[0025] Preferably, the polarization beam splitting cube 33 can be arranged on the device bottom plate 1 through a cube mounting seat. The mounting position and mounting angle of the cube mounting seat can be adjusted to adjust the mounting position and mounting angle of the polarization beam splitting cube 33.

[0026] The light source modules 21 and 22 have at least one light source element 200. Please refer to Figure 2, the light source component 200 has a light source component mounting base 201, an LD light source board 202, and an LD right-angle mirror group 203. The light source component mounting base 201 has a mounting base bottom wall and a mounting base vertical wall. The mounting base bottom plate is fixed on the top surface of the device bottom plate 1. The LD light source board 202 is on one side of the mounting base vertical wall. The LD light source board 202 has a TO-packaged single-tube LD group 2020. The TO-packaged single-tube LDs of the TO-packaged single-tube LD group 2020 are embedded inside the mounting holes of the mounting base vertical wall. The LD light source board 202 is attached to the side surface of one side of the mounting base vertical wall. Preferably, a thermal conductive silicone grease layer is provided between the LD light source board 202 and the mounting base vertical wall. The heat generated when the TO-packaged single-tube LD group works is conducted to the mounting base vertical wall through the thermal conductive silicone grease layer. The LD right-angle mirror group 203 is on the opposite side of the mounting base vertical wall. The LD right-angle mirrors of the LD right-angle mirror group 203 and the TO-packaged single-tube LDs of the TO-packaged single-tube LD group 2020 are in one-to-one correspondence. The emitted light beams of the TO-packaged single-tube LDs of the TO-packaged single-tube LD group 2020 are emitted in the positive X-axis direction through the LD right-angle mirrors of the LD right-angle mirror group 203.

[0027] Among them, the Z-axis height of the TO-packaged single-tube LDs of the TO-packaged single-tube LD group 2020 gradually decreases (or increases) along the X-axis direction. Correspondingly, the Z-axis height of the LD right-angle mirrors of the LD right-angle mirror group 203 gradually decreases (or increases) along the X-axis direction. The purpose of the above design is to eliminate the X-axis spacing of multiple light beams and convert them into a light beam array with a small Z-axis spacing (laser height difference) for output along the X-axis, completing the spatial beam combination of the single light source component 200.

[0028] In this embodiment, each light source module has two light source components 200. The two light source components 200 are symmetrically arranged. The LD right-angle mirrors in the two light source components 200 are attached to the symmetry plane to reduce the Y-axis spacing of the emitted light beams of the two light source components 200.

[0029] The optical path deflection unit 4 is between the polarization beam combination unit 3 and the focusing and coupling unit 5. The emitted light beam of the polarization beam combination unit 3 reaches the focusing and coupling unit 5 through the optical path deflection unit 4. The optical path deflection unit 4 has two deflection right-angle mirrors 41, 42. The polarization beam splitting cube 33 and one of the deflection right-angle mirrors 41 are arranged along the positive Y-axis direction. The two light source modules, the other deflection right-angle mirror, and the focusing and coupling unit 5 are arranged along the positive Y-axis direction. The two deflection right-angle mirrors are arranged along the negative X-axis direction.

[0030] Please refer to Figure 3, the focusing and coupling unit 5 includes a fixed barrel 51, a focusing lens 52, a lens movable seat 53, an energy transmission optical fiber 54, an optical fiber mounting seat 55, etc. The focusing lens 52 is disposed at one end of the fixed barrel 51 through the lens movable seat 53. The lens movable seat 53 is in threaded engagement with the fixed barrel 51, so that the lens movable seat 53 can be displaced along the fixed barrel 51 to adjust the focal position of the focusing lens 52. The energy transmission optical fiber 54 is disposed at the opposite end of the fixed barrel 51 through the optical fiber mounting seat 55. The energy transmission optical fiber 54 penetrates outwards. To enable the focused light spot of the focusing lens 52 to completely enter the interior of the energy transmission optical fiber 54, it is necessary to adjust the focal position of the focusing lens 52 to fall on the core of the energy transmission optical fiber 54.

[0031] To facilitate the displacement of the lens movable seat 53, the lens movable seat 53 has movable seat teeth, and the fixed barrel 51 has a barrel through-hole at the position of the movable seat teeth. The barrel through-hole is used to provide an operating space for displacing and locking the lens movable seat 53.

[0032] The above only expresses the embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A laser dazzling TO package single-tube LD beam combining device, characterized in that, Including: A device base plate, a light source unit, a polarization beam combining unit, and a focusing and coupling unit. The light source unit, the polarization beam combining unit, and the focusing and coupling unit are located on the top surface of the device base plate.

2. The laser dazzling TO package single-tube LD beam combining device according to claim 1, characterized in that, The light source unit has two light source modules, and one of the light source modules is arranged along the positive Y-axis direction with respect to the other light source module; the polarization beam combining unit has a half-wave plate, a light source right-angle reflector, and a polarization beam splitter cube. One of the light source modules, the half-wave plate, and the light source right-angle reflector are arranged along the positive X-axis direction, and the other light source module and the polarization beam splitter cube are arranged along the positive X-axis direction. The light source right-angle reflector and the polarization beam splitter cube are arranged along the positive Y-axis direction; the output beams of the two light source modules are both emitted along the positive X-axis direction. The output beam of one of the light source modules passes through the half-wave plate and the light source right-angle reflector and is incident on one of the incident surfaces of the polarization beam splitter cube, and the output beam of the other light source module is incident on the other incident surface of the polarization beam splitter cube. The polarization beam splitter cube combines the output beams of the two light source modules to form a combined beam that is emitted towards the focusing and coupling unit.

3. The laser dazzling TO package single-tube LD beam combining device according to claim 2, characterized in that, The light source module has at least one light source component; the light source component has an LD light source board and an LD right-angle reflector group; the LD light source board has a TO-packaged single-tube LD group, and the TO-packaged single-tube LD in the TO-packaged single-tube LD group corresponds one-to-one with the LD right-angle reflector in the LD right-angle reflector group; the output beam of the TO-packaged single-tube LD is emitted towards the positive X-axis direction through the LD right-angle reflector.

4. The laser dazzling TO package single-tube LD beam combining device according to claim 3, characterized in that, The Z-axis height of the TO-packaged single-tube LD in the TO-packaged single-tube LD group gradually decreases (or increases) along the X-axis direction; correspondingly, the Z-axis height of the LD right-angle reflector in the LD right-angle reflector group gradually decreases (or increases) along the X-axis direction.

5. The laser dazzling TO package single-tube LD beam combining device according to claim 3 or 4, characterized in that, The light source module has two of the light source components, and the two light source components are symmetrically arranged, and the LD right-angle reflectors in the two light source components are attached to each other on the symmetry plane.

6. The laser dazzling TO package single-tube LD beam combining device according to claim 2, characterized in that, The focusing and coupling unit has a focusing lens and a power transmission optical fiber, and the combined beam is focused onto the power transmission optical fiber through the focusing lens.

7. The laser dazzling TO package single-tube LD beam combining device according to claim 6, characterized in that, The focusing and coupling unit further has a fixed barrel, a lens movable seat, and an optical fiber mounting seat. The focusing lens is arranged at one end of the fixed barrel through the lens movable seat. The lens movable seat is in threaded cooperation with the fixed barrel, so that the lens movable seat can be displaced along the fixed barrel to adjust the focal position of the focusing lens. The power transmission optical fiber is arranged at the opposite end of the fixed barrel through the optical fiber mounting seat; wherein, the focal position falls on the core of the power transmission optical fiber.

8. The laser dazzling TO package single-tube LD beam combining device according to claim 7, characterized in that, The lens movable seat has movable seat teeth, and the fixed barrel has a barrel through-hole at the position of the movable seat teeth. The barrel through-hole is used to provide an operation space for displacing and locking the lens movable seat.

9. The laser dazzling TO package single-tube LD beam combining device according to claim 2, characterized in that, Further including: An optical path deflection unit, the optical path deflection unit is between the polarization beam combining unit and the focusing and coupling unit, and the combined beam of the polarization beam combining unit reaches the focusing and coupling unit through the optical path deflection unit.

10. The laser dazzling TO package single-tube LD beam combining device according to claim 9, characterized in that, The optical path deflection unit has two deflecting right-angle mirrors. The polarization beam splitting cube and one of the deflecting right-angle mirrors are arranged along the positive Y-axis. The two light source modules, the other deflecting right-angle mirror, the focusing lens of the focusing and coupling unit, and the energy transmission optical fiber are arranged along the positive Y-axis. The two deflecting right-angle mirrors are arranged along the negative X-axis.

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