Coaxial laser

Abstract

The utility model relates to the technical field of lasers, and discloses a coaxial laser which comprises a main body, the top end of the main body is in threaded connection with a base, and the inner top wall of the base is fixedly provided with a laser chip. According to the coaxial laser, modular rapid disassembly and assembly are achieved through the threaded connection design of the main body and the base, meanwhile, the internal optical path adopts the vertical coaxial layout of the crystal and the optical lens, and the optical path transmission efficiency and the environmental adaptability are remarkably improved in combination with the sealing protection of the dustproof mirror. On the basis, the crystal is transversely limited through a clamping structure of the convex block and the mounting groove, and the longitudinal pre-tightening force formed by inserting the convex head of the pressing ring and the inserting hole is matched, so that the assembly clearance is effectively eliminated, and the vibration resistance is enhanced; the supporting rod further converts the screwing force of the base into the axial pressing force of the crystal, and the contact stability of the chip and the crystal is optimized. In addition, the thread meshing design of the adjusting cylinder and the sliding block supports the lifting dynamic focusing of the optical lens.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, specifically to a coaxial laser. Background Technology

[0002] Lasers, as precision optical devices, are widely used in industrial processing, medical equipment, and communications. Their optical path stability and output performance directly affect equipment reliability. Traditional coaxial lasers often use welding or gluing to fix internal components, making it difficult to maintain or replace core components such as crystals and lenses after assembly. Furthermore, long-term use can easily lead to optical path misalignment due to mechanical vibration or thermal deformation. In addition, existing structures typically lack effective temperature control design for the laser chip; heat accumulation under high-power conditions can easily cause wavelength drift, and focusing of optical lenses often relies on external tools for disassembly and adjustment, which is cumbersome and affects sealing. Although some solutions attempt to improve stability by adding heat sinks or snap-fit ​​structures, problems such as insufficient component preload, poor vibration resistance, and limited dynamic focusing still exist, making it difficult to simultaneously achieve efficient heat dissipation, rapid maintenance, and precise optical path alignment.

[0003] Therefore, it is necessary to propose a coaxial laser. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a coaxial laser that can be modularly assembled, offering advantages in improved heat dissipation efficiency and environmental adaptability, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a coaxial laser, including a main body, a base threadedly connected to the top of the main body, a laser chip fixedly installed on the inner top wall of the base, a crystal and an optical lens arranged sequentially from top to bottom inside the main body, and a dustproof mirror fixedly connected to the bottom of the main body.

[0006] Preferably, protrusions are fixedly connected to both sides of the inner wall of the main body, and mounting grooves are opened on both sides of the crystal, and the mounting grooves are engaged with the protrusions.

[0007] Preferably, the top of the protrusion has an insertion hole, the top of the crystal has a pressure ring, and the bottom of the pressure ring is fixedly connected to a protrusion, which is movably inserted into the insertion hole.

[0008] Preferably, a support rod is fixedly connected to the bottom end of the base, and the bottom end of the support rod abuts against the top end of the pressure ring.

[0009] Preferably, the surface of the main body is provided with an annular groove, an adjusting cylinder is rotatably sleeved on the surface of the annular groove, the surface of the annular groove is provided with a slot, a slider is fixedly connected to the top of the optical lens, the slider is slidably engaged with the slot, an external thread is provided on the side of the top of the slider, and the internal thread of the adjusting cylinder engages with the external thread of the top of the slider.

[0010] Preferably, a semiconductor cooling chip is fixedly connected to the upper surface of the base, and a heat dissipation fin is fixedly connected to the top of the semiconductor cooling chip.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This coaxial laser features a modular design for rapid assembly and disassembly via a threaded connection between the main body and the base. The internal optical path employs a vertically coaxial layout of the crystal and optical lens, combined with a dustproof lens for enhanced sealing, significantly improving optical transmission efficiency and environmental adaptability. Furthermore, a lateral locking structure using protrusions and mounting slots, along with a longitudinal pre-tightening force created by the protrusion of the pressure ring and its insertion hole, effectively eliminates assembly gaps and enhances vibration resistance. The support rod further converts the base's tightening force into axial clamping force on the crystal, optimizing the contact stability between the chip and the crystal. Additionally, the threaded engagement design of the adjusting cylinder and slider supports dynamic focusing of the optical lens, while the synergistic cooling system of the semiconductor cooler and heat sink fins provides precise temperature control, suppressing laser wavelength drift. These structural elements work together to achieve a balance between high-precision optical path alignment, stable output, and long-life operation. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0014] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0016] Figure 3 This is a schematic diagram of the pressure ring structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the optical lens structure of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 100. Main body; 101. Protrusion; 102. Insertion hole; 103. Dustproof mirror;

[0020] 200. Base; 201. Support rod;

[0021] 300. Laser chip;

[0022] 400, Crystal; 401, Mounting slot;

[0023] 500, pressure ring; 501, protruding head;

[0024] 600, Annular groove; 601, Groove opening;

[0025] 700. Optical lens; 701. Slider; 702. Adjusting cylinder;

[0026] 800, Semiconductor cooling chip; 801, Heat sink fins. Detailed Implementation

[0027] 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.

[0028] Reference Figures 1-4 As shown, a coaxial laser includes a main body 100, a base 200 threadedly connected to the top of the main body 100, a laser chip 300 fixedly mounted on the inner top wall of the base 200, a crystal 400 and an optical lens 700 arranged sequentially from top to bottom inside the main body 100, and a dustproof mirror 103 fixedly connected to the bottom of the main body 100. The threaded connection between the main body 100 and the base 200 enables modular assembly and rapid maintenance; the vertical coaxial layout of the crystal 400 and the optical lens 700 optimizes optical path transmission efficiency; and the dustproof mirror 103 effectively isolates external contaminants, improving the laser's environmental adaptability and long-term stability.

[0029] Preferably, both sides of the inner wall of the main body 100 are fixedly connected with protrusions 101, and both sides of the crystal 400 are provided with mounting grooves 401, which engage with the protrusions 101. The engagement structure between the protrusions 101 and the mounting grooves 401 provides bidirectional positioning of the crystal 400, avoiding off-axis problems caused by lateral displacement, while simplifying the installation process and ensuring precise alignment of the optical path.

[0030] In a further preferred embodiment, the top of the protrusion 101 is provided with an insertion hole 102, and the top of the crystal 400 is provided with a pressure ring 500. The bottom end of the pressure ring 500 is fixedly connected to a protrusion 501, which is movably inserted into the insertion hole 102. The pressure ring 500 applies longitudinal pressure to the crystal 400 through the insertion and engagement of the protrusion 501 and the insertion hole 102, eliminating assembly gaps, enhancing vibration resistance, and preventing optical element misalignment caused by mechanical impact.

[0031] Preferably, a support rod 201 is fixedly connected to the bottom end of the base 200, and the bottom end of the support rod 201 abuts against the top end of the pressure ring 500. The support rod 201 transmits the tightening force of the base 200 to the pressure ring 500, forming an axial preload on the crystal 400, improving the contact tightness between the chip 300 and the crystal 400, reducing the interface thermal resistance, and improving the heat dissipation effect.

[0032] In a further preferred embodiment, the surface of the main body 100 has an annular groove 600, and an adjusting cylinder 702 is rotatably sleeved on the surface of the annular groove 600. The surface of the annular groove 600 has a slot 601, and a slider 701 is fixedly connected to the top of the optical lens 700. The slider 701 slidably engages with the slot 601, and an external thread is provided on the side of the top of the slider 701. The internal thread of the adjusting cylinder 702 meshes with the external thread of the top of the slider 701. This threaded engagement design between the adjusting cylinder 702 and the slider 701 allows the rotation of the adjusting cylinder 702 to drive the optical lens 700 up and down along the slot 601, achieving dynamic focal length adjustment and adapting to different working conditions without disassembly.

[0033] Preferably, a thermoelectric cooler 800 is fixedly connected to the upper surface of the base 200, and a heat sink fin 801 is fixedly connected to the top of the thermoelectric cooler 800. The thermoelectric cooler 800 and the heat sink fin 801 together form an active heat dissipation system, which quickly dissipates the heat of the laser chip 300, suppresses wavelength drift caused by temperature rise, and ensures the stability of operation under high power output. The thermoelectric cooler 800 is a TEC1-12706 model with a maximum cooling power of 60W.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coaxial laser comprising a main body (100), characterized in that: The top end of the main body (100) is threadedly connected with a base (200), the inner top wall of the base (200) is fixedly installed with a laser chip (300), the inside of the main body (100) is sequentially provided from top to bottom with a crystal (400) and an optical lens (700), and the bottom end of the main body (100) is fixedly connected with a dustproof mirror (103).

2. A coaxial laser as claimed in claim 1, characterized in that: The inner wall of the main body (100) is fixedly connected with a lug (101) on both sides, the two side edges of the crystal (400) are provided with an installation groove (401), and the installation groove (401) is clamped with the lug (101).

3. A coaxial laser as claimed in claim 2, characterized in that: The top end of the lug (101) is provided with a bushing (102), the top end of the crystal (400) is provided with a compression ring (500), the bottom end of the compression ring (500) is fixedly connected with a lug (501), and the lug (501) is movably inserted with the bushing (102).

4. A coaxial laser as claimed in claim 3, characterized in that: The bottom end of the base (200) is fixedly connected with a support rod (201), and the bottom end of the support rod (201) abuts against the top end of the compression ring (500).

5. A coaxial laser as claimed in claim 1, characterized in that: The surface of the main body (100) is provided with an annular groove (600), the surface of the annular groove (600) is rotatably sleeved with an adjusting cylinder (702), the surface of the annular groove (600) is provided with a slot (601), the top end of the optical lens (700) is fixedly connected with a sliding block (701), the sliding block (701) is slidably clamped with the slot (601), the side surface of the top end of the sliding block (701) is provided with external threads, and the internal threads of the adjusting cylinder (702) are engaged with the external threads of the top end of the sliding block (701).

6. A coaxial laser as claimed in claim 1, characterized in that: The upper surface of the base (200) is fixedly connected with a semiconductor refrigerating sheet (800), and the top end of the semiconductor refrigerating sheet (800) is fixedly connected with a heat dissipation fin (801).

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