Novel two-gear switching type high-brightness laser illumination laser

Abstract

The utility model discloses a novel two-gear switching type high-brightness laser illumination laser which comprises a laser illuminator and a laser lamp emission optical fiber head arranged on the left side of the laser illuminator, and a movable connection guide rod is arranged in the laser illuminator. A zoom group structural body is arranged on the side face of the movable connecting guide rod, a zoom group irradiation groove is formed in the middle of the zoom group structural body, two spherical lenses are arranged in the zoom group structural body, and the zoom group structural body can move up and down along the movable connecting guide rod. The beneficial effects of the utility model are that only the spherical mirror group is adopted, compared with aspherical mirrors and spherical mirrors, the processing difficulty is low, the processing cost is low, and the assembly precision requirement is low, the high-precision one-dimensional translation stage is adopted as a zoom group cut-in / cut-out assembly, and the precision of the translation stage is ensured by the grating and the optical encoder when the divergence angle is switched. And high-precision laser pointing can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the security laser active illumination field, especially relates to Gauss light beam shaping technology, high direction accuracy divergence angle switching technology. BACKGROUND

[0002] In today's security field, night vision technology plays a pivotal role, which is mainly divided into two categories of active night vision technology and passive night vision technology. Among them, low-light-level night vision and infrared thermal imaging technology belong to the category of passive imaging technology, which relies on weak light in the environment or the heat radiation of the object itself to image, and has its own unique advantages and application scenarios. Laser night vision technology, as a typical representative of active night vision technology, takes auxiliary illumination laser as the core, and shows the significant advantages of long action distance and high imaging clarity, providing strong support for many security monitoring tasks.

[0003] However, laser illumination faces many technical challenges in practical application. On the one hand, the laser output by the laser usually presents a Gaussian beam, which means that its spot distribution follows the Gaussian distribution law, with high central light intensity and gradually decreasing edge light intensity, which cannot directly meet the key condition of good light intensity uniformity required by laser illumination. To achieve uniform illumination, it is urgent to accurately shape the illumination laser into a flat-top beam. On the other hand, the security monitoring scene is complex and variable, and there are completely different requirements for laser illumination under different observation needs. When observing at close range, the camera lens has a small focal length and a large field of view, so the illumination laser needs to cover most or even all of the field of view to ensure the integrity of the monitoring picture. In the case of long-distance observation, in order to ensure that the camera can capture a clear image, the illumination laser must have sufficient brightness. This diversification of needs requires the shaping optical system to have a divergence angle switching function to adapt flexibly to different observation distances and provide the best illumination effect for security monitoring. In summary, it is urgent to develop a laser illumination technology that can effectively solve the above problems. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a novel two-gear switching type high-brightness laser illumination laser, which aims to solve the problem that the shaping optical system needs to have a divergence angle switching function.

[0005] To address the aforementioned problems, this utility model proposes a novel two-level switchable high-brightness laser illumination laser, comprising a laser illuminator and a laser lamp emitting fiber head disposed on the left side of the laser illuminator. A movable connecting rod is disposed inside the laser illuminator, and a zoom group structure is disposed on the side of the movable connecting rod. A zoom group illumination slot is disposed in the middle of the zoom group structure, and two spherical lenses are disposed in the zoom group structure. The zoom group structure can move up and down along the movable connecting rod.

[0006] In one embodiment, a guide rod side connector is provided on the side of the movable connecting guide rod, and a threaded through hole is provided on the guide rod side connector. The guide rod side connector is connected to the laser illuminator by a screw passing through the threaded through hole.

[0007] In one embodiment, a control adjustment switch is provided on the left side near the lower side of the laser illuminator, and the control adjustment switch controls the laser lamp emitting fiber head to start and stop.

[0008] In one embodiment, a fixed spherical lens group is provided near the right side of the laser illuminator, and the fixed spherical lens group consists of three spherical lenses.

[0009] In one embodiment, an outer connecting protective sleeve is provided at the outer right side of the laser illuminator, and the inner diameter of the outer connecting protective sleeve is equal to the outer diameter of the laser illuminator.

[0010] In one embodiment, a limiting movement groove is provided at the inner position of the outer connecting protective sleeve, wherein the limiting movement groove at the middle position of the outer connecting protective sleeve is larger.

[0011] In one embodiment, a limiting moving block is provided at the middle position of the limiting moving groove, and a first telescopic connecting rod is provided at the side position of the limiting moving block. The first telescopic connecting rod and the limiting moving block are an integral structure.

[0012] In one embodiment, a second telescopic connecting rod is provided at the middle position of the first telescopic connecting rod, and a third telescopic connecting rod is provided at the middle position of the second telescopic connecting rod. The second telescopic connecting rod, the first telescopic connecting rod, the third telescopic connecting rod, and the second telescopic connecting rod are all connected by a limiting moving block and a limiting moving groove structure.

[0013] In one embodiment, a side connecting ring is provided on the side of the third telescopic connecting rod, a through groove is provided in the middle of the side connecting ring, and an insertion groove is provided on the side connecting ring near the side. The third telescopic connecting rod is installed and connected to the side connecting ring by insertion.

[0014] In an embodiment, the first telescopic connecting rod at the middle position is provided with a middle warning sheet, and a red transparent warning transparent label is arranged on the middle warning sheet.

[0015] Beneficial effects: 1, the technical scheme of the utility model discloses a novel two-grade switching type high-brightness laser lighting laser, including laser illuminator and the laser lamp emitting optical fiber head of the laser illuminator left side position, the inside position of laser illuminator is provided with mobile connection guide rod, the side position of mobile connection guide rod is provided with zoom group structure, the middle position of zoom group structure is provided with zoom group irradiation groove, two pieces of spherical lens are arranged in zoom group structure, the zoom group structure can move up and down along the mobile connection guide rod, the spherical mirror group is only used in the present application, that is, the high gauss beam can be shaped into a flat-top beam, meet the laser active illumination to the high uniformity laser spot requirement, compared with the aspherical mirror, the spherical mirror has low processing difficulty, low processing cost and low assembly precision requirement, the present application adopts high-precision one-dimensional translation stage as zoom group cut-in / cut-out component, the precision of the translation stage is ensured by the grating and the optical encoder, and the positioning accuracy is less than or equal to 5 microns, when the size of the switching divergence angle is switched, the laser can also be ensured to have high-precision pointing, and the pointing accuracy is less than or equal to 50 microradian when the two grades are switched.

[0016] 2, the technical scheme of the utility model discloses a novel two-grade switching type high-brightness laser lighting laser, including the inside position of the outer connecting protective sleeve is provided with a limit moving groove, wherein the limit moving groove at the middle position of the outer connecting protective sleeve is larger, the right side of the laser illuminator is provided with an outer connecting protective sleeve, the inner diameter of the outer connecting protective sleeve is equal to the outer diameter of the laser illuminator, the middle position of the limit moving groove is provided with a limit moving block, the side position of the limit moving block is provided with a first telescopic connecting rod, the first telescopic connecting rod and the limit moving block are of an integral structure, the middle position of the first telescopic connecting rod is provided with a second telescopic connecting rod, the middle position of the second telescopic connecting rod is provided with a third telescopic connecting rod, the second telescopic connecting rod, the first telescopic connecting rod, the third telescopic connecting rod and the second telescopic connecting rod are connected through the limit moving block and the limit moving groove structure, the side position of the third telescopic connecting rod is provided with a side connecting ring, the middle of the side connecting ring is provided with a through groove, the side connecting ring is provided with a plug-in groove close to the side position, the third telescopic connecting rod is installed and connected with the side connecting ring in a plug-in manner, the side of the first telescopic connecting rod at the middle position is provided with a middle warning sheet, and a red transparent warning transparent label is arranged on the middle warning sheet, after the improvement of the utility model, the stretched side connecting ring can form a protective cage structure through the three telescopic connecting rods, so that the user can avoid being injured by accidentally touching the nearby laser lamp, and the red transparent warning transparent label can warn and inform, thereby effectively reducing the occurrence of dangerous accidents. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the two-level switching high-brightness laser illumination laser of this utility model after switching into the zoom group;

[0019] Figure 2 This is a schematic diagram of the two-level switching high-brightness laser illumination laser of this utility model before switching into the zoom group;

[0020] Figure 3 This is a partial cross-sectional view of the protective sleeve for the external connection of the two-speed switching high-brightness laser illumination laser of this utility model.

[0021] The annotations in the attached figures are explained as follows:

[0022] In the diagram: 1. Laser illuminator; 2. Laser light emitting fiber optic head; 3. Variable magnification group structure; 4. Variable magnification group irradiation slot; 5. Control and adjustment switch; 6. Moving connecting rod; 7. Side connector of the guide rod; 8. Fixed spherical lens group; 9. Upper connecting fastening knob; 10. Outer connecting post; 11. Outer connecting protective sleeve; 12. First telescopic connecting rod; 13. Second telescopic connecting rod; 14. Third telescopic connecting rod; 15. Central warning plate; 16. Side connecting ring; 17. Warning transparent label; 18. Limiting moving groove; 19. Limiting moving block; 20. Central connecting fastening threaded post. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] In the utility model, unless another explicit provision and limitation, the terms "connect", "fix" and the like should be broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship, unless another explicit limitation.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In addition, if the embodiment of the utility model involves "first", "second" and the like description, the "first", "second" and the like description is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature.In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme.In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0027] This invention proposes a novel two-level switching high-brightness laser illumination device. The device includes a laser illuminator and a laser light emitting fiber head located on the left side of the illuminator. A movable connecting rod is located inside the laser illuminator, and a zoom group structure is located on the side of the movable connecting rod. A zoom group illumination slot is located in the middle of the zoom group structure, and two spherical lenses are disposed within the zoom group structure. The zoom group structure can move along the movable connecting rod... The guide rod moves up and down. This invention uses only a spherical mirror group to shape a Gaussian beam into a flat-top beam, which meets the requirement of high uniformity of laser spot for active laser illumination. Compared with aspherical mirrors, spherical mirrors are easier and cheaper to manufacture, and have lower assembly precision requirements. This invention uses a high-precision one-dimensional translation stage as the variable magnification group's entry / exit component. The accuracy of the translation stage is guaranteed by gratings and optical encoders, with a positioning accuracy of ≤5μm. When switching the divergence angle, it can also ensure high-precision laser pointing, with a pointing accuracy of ≤50μrad when switching between the two levels. This utility model relates to a two-speed switchable high-brightness laser illuminator, which includes a limiting movement groove located inside an outer connecting protective sleeve. The limiting movement groove at the middle position of the outer connecting protective sleeve is larger. An outer connecting protective sleeve is located on the right outer side of the laser illuminator, with its inner diameter equal to the outer diameter of the laser illuminator. A limiting movement block is located at the middle position of the limiting movement groove. A first telescopic connecting rod is located on the side of the limiting movement block, and the first telescopic connecting rod and the limiting movement block are integrally formed. A second telescopic connecting rod is located at the middle position of the first telescopic connecting rod, and a third telescopic connecting rod is located at the middle position of the second telescopic connecting rod. The second telescopic connecting rod, the first telescopic connecting rod, the third telescopic connecting rod, and the second telescopic connecting rod are all integrated into the laser illuminator. All connecting rods are connected via limiting moving blocks and limiting moving slots. A side connecting ring is provided on the side of the third telescopic connecting rod, with a through groove in the middle and an insertion slot near the side. The third telescopic connecting rod is installed and connected to the side connecting ring via insertion. A central warning plate is provided on the side of the first telescopic connecting rod at the middle position, with a red transparent warning label on it. With this improved design, the side connecting ring can be stretched to form a protective cage structure through the action of the three telescopic connecting rods, preventing users from accidentally touching nearby laser lights and causing injury. Simultaneously, the red transparent warning label provides a warning, effectively reducing the occurrence of dangerous accidents.

[0028] Specifically, in one embodiment of the utility model, the two-level switchable high-brightness laser illumination laser includes a laser illuminator 1 and a laser lamp emitting fiber head 2 disposed on the left side of the laser illuminator 1. A movable connecting rod 6 is disposed inside the laser illuminator 1, a zoom group structure 3 is disposed on the side of the movable connecting rod 6, a zoom group illumination groove 4 is disposed in the middle of the zoom group structure 3, and two spherical lenses are disposed in the zoom group structure 3. The zoom group structure 3 can move along the movable connecting rod 6. By moving up and down, this invention uses only a spherical mirror group to shape a Gaussian beam into a flat-top beam, which meets the requirement of high uniformity of laser spot for active laser illumination. Compared with aspherical mirrors, spherical mirrors are easier and cheaper to manufacture, and have lower assembly precision requirements. This invention uses a high-precision one-dimensional translation stage as the variable magnification group's entry / exit component. The accuracy of the translation stage is guaranteed by gratings and optical encoders, with a positioning accuracy of ≤5μm. When switching the divergence angle, it can also ensure high-precision laser pointing, with a pointing accuracy of ≤50μrad when switching between the two levels.

[0029] In this embodiment, as Figure 1 and Figure 2 As shown, a guide rod side connector 7 is provided on the side of the movable connecting guide rod 6. The guide rod side connector 7 is provided with a threaded through hole. The guide rod side connector 7 is connected to the laser illuminator 1 by a screw passing through the threaded through hole. The guide rod side connector 7 is provided to fasten the movable connecting guide rod 6 and prevent the movable connecting guide rod 6 from shaking and affecting the movement and adjustment of the zoom group structure 3.

[0030] In this embodiment, as Figure 1 and Figure 2 As shown, a control switch 5 is located on the lower left side of the laser illuminator 1. The control switch 5 controls the laser lamp emitting fiber head 2 to start and stop. The control switch 5 is designed to allow manual switching of the current in the laser illuminator 1.

[0031] In this embodiment, as Figure 1 and Figure 2 As shown, a fixed spherical lens group 8 is provided near the right side of the laser illuminator 1. The fixed spherical lens group 8 consists of three spherical lenses. The fixed spherical lens group 8 is used to adjust and change the direction and angle of the laser beam.

[0032] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the outer connection protection sleeve 11 is arranged at the right outer side position of the laser illuminator 1, the inner diameter of the outer connection protection sleeve 11 is equal to the outer diameter of the laser illuminator 1, the outer connection protection sleeve 11 is arranged with a limit moving groove 18 at the inner position, the limit moving groove 18 is larger at the middle position of the outer connection protection sleeve 11, the limit moving groove 18 is arranged with a limit moving block 19 at the middle position, the first telescopic connecting rod 12 is arranged at the side position of the limit moving block 19, the first telescopic connecting rod 12 is an integral structure with the limit moving block 19, the second telescopic connecting rod 13 is arranged at the middle position of the first telescopic connecting rod 12, the third telescopic connecting rod 14 is arranged at the middle position of the second telescopic connecting rod 13, the second telescopic connecting rod 13 and the first telescopic connecting rod 12 and the third telescopic connecting rod 14 and the second telescopic connecting rod 13 are connected through the limit moving block 19 and the limit moving groove 18 structure, the side surface connecting ring 16 is arranged at the side position of the third telescopic connecting rod 14, the middle of the side surface connecting ring 16 is arranged with a through slot, the side surface connecting ring 16 is arranged with a plug-in slot near the side position, the third telescopic connecting rod 14 is installed and connected with the side surface connecting ring 16 through plug-in mode, the first telescopic connecting rod 12 at the middle position is arranged with a middle warning sheet 15, the middle warning sheet 15 is arranged with a red transparent warning transparent label 17, after the improvement of the utility model, the stretched side surface connecting ring 16 can form a protection cage structure through the three telescopic connecting rods, the user can be prevented from being injured due to accidentally touching the close laser lamp, and the red transparent warning transparent label 17 can be used for warning and informing, so that the occurrence of dangerous accidents is effectively reduced.

[0033] The above description is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the utility model concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A novel two-level switching high-brightness laser illumination laser, comprising a laser illuminator (1) and a laser lamp emitting fiber head (2) disposed on the left side of the laser illuminator (1), characterized in that, A movable connecting rod (6) is provided inside the laser illuminator (1). A variable magnification group structure (3) is provided on the side of the movable connecting rod (6). A variable magnification group irradiation slot (4) is provided in the middle of the variable magnification group structure (3). Two spherical lenses are provided in the variable magnification group structure (3). The variable magnification group structure (3) can move up and down along the movable connecting rod (6).

2. The novel two-level switching high-brightness laser illumination laser as described in claim 1, characterized in that, The movable connecting guide rod (6) is provided with a guide rod side connector (7) at the side position. The guide rod side connector (7) is provided with a threaded through hole. The guide rod side connector (7) is connected to the laser illuminator (1) by screws passing through the threaded through hole.

3. A novel two-level switching high-brightness laser illumination laser as described in claim 1, characterized in that, A control adjustment switch (5) is provided on the left side near the lower side of the laser illuminator (1). The control adjustment switch (5) controls the laser lamp emitting fiber head (2) to start and stop.

4. A novel two-level switching high-brightness laser illumination laser as described in claim 1, characterized in that, The laser illuminator (1) has a fixed spherical lens group (8) located near the right side, which consists of three spherical lenses.

5. A novel two-level switching high-brightness laser illumination laser as described in claim 1, characterized in that, An outer connecting protective sleeve (11) is provided at the outer right side of the laser illuminator (1), and the inner diameter of the outer connecting protective sleeve (11) is equal to the outer diameter of the laser illuminator (1).

6. A novel two-level switching high-brightness laser illumination laser as described in claim 5, characterized in that, A limiting movement groove (18) is provided inside the outer connecting protective sleeve (11), wherein the limiting movement groove (18) at the middle position of the outer connecting protective sleeve (11) is larger.

7. A novel two-level switching high-brightness laser illumination laser as described in claim 6, characterized in that, A limiting moving block (19) is provided at the middle position of the limiting moving groove (18), and a first telescopic connecting rod (12) is provided at the side position of the limiting moving block (19). The first telescopic connecting rod (12) and the limiting moving block (19) are an integral structure.

8. A novel two-level switching high-brightness laser illumination laser as described in claim 7, characterized in that, A second telescopic connecting rod (13) is provided at the middle position of the first telescopic connecting rod (12), and a third telescopic connecting rod (14) is provided at the middle position of the second telescopic connecting rod (13). The second telescopic connecting rod (13), the first telescopic connecting rod (12), the third telescopic connecting rod (14), and the second telescopic connecting rod (13) are all connected by a limiting moving block (19) and a limiting moving groove (18) structure.

9. A novel two-level switching high-brightness laser illumination laser as described in claim 8, characterized in that, A side connecting ring (16) is provided on the side of the third telescopic connecting rod (14). A through groove is provided in the middle of the side connecting ring (16). An insertion groove is provided on the side connecting ring (16) near the side. The third telescopic connecting rod (14) is installed and connected to the side connecting ring (16) by insertion.

10. A novel two-level switching high-brightness laser illumination laser as described in claim 7, characterized in that, The first telescopic connecting rod (12) located in the middle position has a central warning plate (15) on its side, and a red transparent warning label (17) is provided on the central warning plate (15).

Images