LD emitter

Abstract

The invention provides an LD emitter, and relates to the technical field of photoelectric devices. Comprising a light wave emitter, a hollow fixing mechanism, a cylindrical refraction lens, a filtering mechanism and an optical fiber. The light wave emitter is installed at one end of the fixing mechanism, the refraction lens, the filtering mechanism and the optical fiber are sequentially and coaxially installed in a cavity of the fixing mechanism, and the optical fiber penetrates through the end, away from the light wave emitter, of the fixing mechanism. When the light wave emitter emits light waves, the light waves are converted into convergent light through the refraction lens, and the convergent light enters the optical fiber after being filtered by the filtering mechanism. The problems of low production and assembly efficiency, high packaging cost and influence on light wave propagation efficiency of a traditional light emitting device can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optoelectronic devices, in particular to an LD emitter. BACKGROUND

[0002] With the rapid development of manufacturing industry, fast, high-precision and low-cost manufacturing process is the operation policy that producers constantly develop and pursue at present.

[0003] With the gradual increase of market development and demand of medical equipment (such as laser treatment), industrial detection (such as material processing), consumer electronics (such as projectors) and other products, the production efficiency and cost control of light emitting devices have become the key link of the production and manufacturing of optoelectronic equipment.

[0004] In the prior art, the production of light emitting devices, especially the assembly process, requires assembly personnel or machines to gradually couple the emitter, lens, filter and other structures in the light emitting device to ensure the smooth refraction and propagation of light waves after emission. However, such gradual coupling assembly method has the problems of low efficiency, high packaging cost and affecting the efficiency of light wave propagation. SUMMARY

[0005] Therefore, the purpose of the embodiments of the present application is to provide an LD emitter, which can improve the problems of low efficiency, high packaging cost and affecting the efficiency of light wave propagation in the production and assembly of traditional light emitting devices.

[0006] To achieve the above technical purpose, the technical scheme adopted by the present application is as follows:

[0007] The embodiments of the present application provide an LD emitter, which comprises:

[0008] a light wave emitter, a hollow fixing mechanism, a cylindrical refractive lens, a filtering mechanism and an optical fiber;

[0009] The light wave emitter is installed at one end of the fixing mechanism, the refractive lens, the filtering mechanism and the optical fiber are coaxially installed in the cavity of the fixing mechanism in sequence, and the optical fiber penetrates through the end of the fixing mechanism away from the light wave emitter.

[0010] When the light wave emitter emits light waves, the light waves are converted into converging light through the refractive lens, and the converging light enters the optical fiber after being filtered by the filtering mechanism.

[0011] In the technical solution, the coaxial packaging design of the overall structure realizes accurate positioning and calibration-free assembly of the optical path assembly. The light wave emitter is installed at one end of the fixing mechanism, so that the light source output direction is aligned with the axial direction of the fixing mechanism, avoiding the light axis deviation; the refractive lens, the filtering mechanism and the optical fiber are coaxially installed in the cavity of the fixing mechanism in sequence, forming a continuous and strictly aligned light transmission channel, ensuring that the light wave can complete the processes of refraction, filtering and conduction in sequence without additional coupling calibration. The structure is simple and has high practicability.

[0012] As an optional implementation, the fixing mechanism comprises a first fixed shell, a second fixed shell and a "T"-shaped stepped ring, the first fixed shell is fixedly connected with one end of the transverse part of the stepped ring, the second fixed shell is sleeved on the vertical part of the stepped ring, one end of the second fixed shell abuts against the other end of the transverse part of the stepped ring, one end of the optical fiber is arranged in the stepped ring, and the other end of the optical fiber penetrates the second fixed shell away from the stepped ring.

[0013] In the technical solution, the first fixed shell is fixedly connected with the transverse part of the stepped ring to form an axial reference surface, the second fixed shell is sleeved on the vertical part and abuts against the transverse part to form radial constraint, and the optical fiber is arranged in the stepped ring to realize coaxial positioning. The transverse part of the stepped ring serves as an abutting platform of the first fixed shell and the second fixed shell, and the vertical part serves as a guide channel of the optical fiber. The abutting cooperation of the second fixed shell and the stepped ring forms axial limiting, and the sleeving structure realizes radial pre-tightening, so that the light wave emitter, the refractive lens, the filtering mechanism and the optical fiber form a stable coaxial optical path, and the packaging can be completed without repeatedly adjusting the positions of the optical devices. The design that the optical fiber penetrates the second fixed shell ensures the fixation of the light emitting end of the optical fiber and avoids the influence of the external environment on the optical path. The structure is simple and has high practicability.

[0014] As an optional implementation, one end of the first fixed shell is provided with a first mounting groove, the light wave emitter is mounted in the first mounting groove, the other end of the first fixed shell is provided with a second mounting groove, the filtering mechanism is clamped in the second mounting groove, and a mounting through hole communicating the first mounting groove and the second mounting groove is arranged between the first mounting groove and the second mounting groove, and the refractive lens is arranged in the mounting through hole.

[0015] In the technical solution, the first mounting groove directly bears the light wave emitter, the second mounting groove fixes the filtering mechanism, and the mounting through hole serves as an optical path transmission channel and contains the refractive lens. This structure design makes the light wave emitter, the refractive lens and the filtering mechanism naturally form a coaxial relationship during installation, without manual adjustment of the optical path coupling. The layout that the mounting through hole communicates the two mounting grooves ensures that the light beam emitted by the light wave emitter can directly penetrate the refractive lens to reach the filtering mechanism, eliminating the axial deviation caused by the split mounting. The structure is simple and has high practicability.

[0016] As an optional implementation, the vertical part of the stepped ring is further provided with a limiting protrusion, and the second fixed shell is provided with a limiting slot;

[0017] When the second fixed shell is sleeved on the stepped ring, and one end of the second fixed shell abuts against the transverse part of the stepped ring, the limiting protrusion is clamped in the limiting slot.

[0018] In the technical solution, the limiting protrusion provided on the vertical part of the stepped ring cooperates with the limiting slot inside the second fixed shell, so that the axial positioning is completed when the second fixed shell abuts against the transverse part of the stepped ring, and the limiting protrusion is embedded in the limiting slot to form radial constraint. This double positioning mechanism not only prevents the second fixed shell from rotating or axially deviating due to vibration or external force after installation, but also ensures the coaxiality between the second fixed shell and the stepped ring, thereby ensuring the accurate alignment of the optical fiber and the internal components such as the filtering mechanism and the refractive lens, and avoiding the deviation of the optical path or the decrease of the coupling efficiency due to the loosening of the second fixed shell. The structure is simple and has strong practicability.

[0019] As an optional implementation, the second fixed shell is a three-segment integrated structure, the first segment of the second fixed shell is a cylinder with an inner diameter greater than or equal to the outer diameter of the vertical part of the stepped ring, the second segment of the second fixed shell is a hollow cone, and the third segment of the second fixed shell is a cylinder with an inner diameter equal to the diameter of the optical fiber. The first segment of the second fixed shell abuts against the transverse part of the stepped ring.

[0020] In the technical solution, the inner diameter of the first segment of the cylinder is adapted to the outer diameter of the vertical part of the stepped ring, which not only ensures the assembly gap tolerance, but also forms radial constraint; the second segment of the cone structure serves as a transition area and can guide the optical fiber in space and relieve stress concentration; the inner diameter of the third segment of the cylinder is strictly matched with the diameter of the optical fiber, forming a circumferential wrapping type fixation to prevent the optical fiber from deviating. The abutting relationship between the first segment of the cylinder and the transverse part of the stepped ring provides axial support in a surface contact manner, avoiding local stress problems caused by threaded locking. The three-segment structure changes the geometric form by gradient, ensuring the coaxiality of the optical fiber while integrating the optical path packaging function and the mechanical fixing function in a single component. The structure is simple and has strong practicability.

[0021] As an optional implementation, the filtering mechanism includes a cylindrical mounting shell, the mounting shell is clamped in the second mounting slot, and two filter plates are mounted in the mounting shell. A horizontal line at a half height position of the mounting shell is taken as a symmetry axis, the two filter plates are arranged in axial symmetry along the symmetry axis, and each filter plate forms a preset angle with the symmetry axis.

[0022] In the technical solution, the filter mechanism is precisely positioned and stably installed in the fixing mechanism through the clamping cooperation of the cylindrical mounting shell and the second mounting groove, ensuring the coaxiality of the filter mechanism, the light wave emitter, the refractive lens and the optical fiber. The two filter plates arranged in the mounting shell are symmetrically distributed about the horizontal symmetry axis, and each filter plate forms a preset angle with the symmetry axis, so that the two filter plates are symmetrically and obliquely arranged in space. This arrangement can adjust the light path direction through the symmetric oblique angle when the converging light passes through the two filter plates, reduce the scattering and reflection loss of the light wave in the filtering process, and enhance the filtering effect. The symmetry axis is arranged at the midpoint of the height of the mounting shell, ensuring the balanced distribution of the filter plates in the mounting shell and avoiding the instability caused by the gravity center deviation. The oblique design of the angle further optimizes the light wave incidence angle, avoids the echo interference on the surface of the filter plate, and improves the light wave transmission efficiency.

[0023] As an optional implementation, the first fixing shell, the stepped ring and the mounting shell are made of stainless steel, and the second fixing shell is made of TPE.

[0024] In the technical solution, the first fixing shell, the stepped ring and the mounting shell made of stainless steel ensure the high strength, corrosion resistance and dimensional stability of the key connecting components, so as to maintain the coaxiality precision of the light path during packaging. At the same time, the second fixing shell made of TPE is tightly sleeved with the stepped ring by using the elastic deformation ability, which can not only buffer the installation stress, but also form a sealing structure through material rebound to avoid external environmental interference. The combination of stainless steel and TPE forms a balance between rigid support and flexible adaptation, so that the light wave emitter, the refractive lens, the filter mechanism and other components can be directly coaxially packaged without complex coupling, reducing the process difficulty and material cost.

[0025] As an optional implementation, the refractive lens is arranged in the mounting through hole, and the outer wall of the refractive lens is bonded with the inner wall of the mounting through hole.

[0026] In the technical solution, the refractive lens is directly arranged in the mounting through hole of the fixing mechanism, and the fixing mode of bonding the outer wall and the inner wall of the through hole is adopted, so that coaxial packaging of the light wave emitter, the refractive lens and the filtering mechanism is realized. The refractive lens is arranged in the mounting through hole, so that the light path generated by the light wave emitter can penetrate the refractive lens and the filtering mechanism along the axial direction of the through hole in sequence, forming a straight light path transmission path without subsequent adjustment. The bonding operation of the outer wall and the inner wall of the through hole ensures the axial positioning accuracy of the refractive lens in the through hole, and fills the assembly gap between the outer wall of the lens and the inner wall of the through hole through the glue layer, eliminating the eccentric error that may be caused by the traditional mechanical clamping mode, and finally realizing the self-alignment packaging of the optical elements in the fixing mechanism. In this way, the pre-installed position of the refractive lens is ensured by the pre-installed mounting through hole, and the refractive lens is directly inserted and bonded in the mounting through hole during the emitter assembly, so that the installation of the refractive lens is completed. Compared with the traditional coupling adjustment assembly mode, the assembly difficulty and material cost of the refractive lens are reduced. The structure is simple and has high practicality.

[0027] The application adopting the above technical solution has the following advantages:

[0028] In the technical solution provided in the present application, the precise positioning and calibration-free assembly of the light path assembly are realized through the coaxial packaging design of the overall structure. The light wave emitter is installed at one end of the fixing mechanism, so that the light source output direction is aligned with the axial direction of the fixing mechanism, avoiding the light axis deviation. The refractive lens, the filtering mechanism and the optical fiber are coaxially installed in the cavity of the fixing mechanism in sequence, forming a continuous and strictly aligned light transmission channel, ensuring that the light wave can complete the refraction, filtering and conduction processes in sequence without additional coupling calibration. The spatial position of each component is locked through the mechanical constraint of the fixing mechanism. The divergent light emitted by the light wave emitter is converted into convergent light by the refractive lens, and then directly coupled into the optical fiber after filtering the stray light by the filtering mechanism. The relative positions of the light path components do not need to be adjusted manually during the whole process, solving the coupling problem that needs to be calibrated item by item in the traditional technology. BRIEF DESCRIPTION OF DRAWINGS

[0029] The present application can be further illustrated by the non-limiting embodiments shown in the accompanying drawings. It should be understood that the following drawings only show certain embodiments of the present application, and therefore should not be considered as limiting the scope, and other related drawings can be obtained by those skilled in the art without creating creative labor.

[0030] Figure 1 The LD emitter structure schematic diagram provided for the embodiments of the present application.

[0031] Figure 2 The structure schematic diagram of the filtering mechanism provided for the embodiments of the present application.

[0032] Icon: 1 - light wave emitter; 2 - filter mechanism; 201 - mounting shell; 202 - filter sheet; 3 - optical fiber; 4 - first fixing shell; 5 - second fixing shell; 6 - stepped ring; 601 - limiting protrusion; 7 - refractive lens. DETAILED DESCRIPTION

[0033] The technical solutions in the present application will be described in detail below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] Please refer to Figure 1 The present application provides an LD emitter, comprising:

[0035] The light wave emitter 1, the fixing mechanism, the refractive lens 7, the filter mechanism 2 and the optical fiber 3.

[0036] The light wave emitter 1 is installed at the lower end surface of the fixing mechanism, the refractive lens 7, the filter mechanism 2 and the optical fiber 3 are coaxially installed in the cavity of the fixing mechanism in sequence, and the optical fiber 3 penetrates the upper end surface of the fixing mechanism.

[0037] When the light wave emitter 1 emits light waves, the light waves are converted into converging light through the refractive lens 7, and the converging light enters the optical fiber 3 after being filtered by the filter mechanism 2.

[0038] In this way, through the coaxial packaging design of the overall structure, the precise positioning and calibration-free assembly of the optical path components are realized. The light wave emitter 1 is installed at the lower end surface of the fixing mechanism, so that the light source output direction is aligned with the axial direction of the fixing mechanism, avoiding the deviation of the optical axis; the refractive lens 7, the filter mechanism 2 and the optical fiber 3 are coaxially installed in the cavity of the fixing mechanism in sequence, forming a continuous and strictly aligned light transmission channel, ensuring that the light waves can complete the processes of refraction, filtering and conduction in sequence without additional coupling calibration.

[0039] In the embodiment, the fixing mechanism comprises a first fixing shell 4, a second fixing shell 5 and a "T"-shaped stepped ring 6, the upper end surface of the first fixing shell 4 is fixedly connected with the lower end surface of the horizontal part of the stepped ring 6, the second fixing shell 5 is sleeved on the vertical part of the stepped ring 6 and is limited by the limiting protrusion 601 on the stepped ring 6 and the limiting groove on the inner wall of the second fixing shell 5, the lower end surface of the second fixing shell 5 abuts against the upper end surface of the horizontal part of the stepped ring 6, the lower end of the optical fiber 3 is arranged in the stepped ring 6, and the upper end of the optical fiber 3 penetrates through the upper end surface of the second fixing shell 5.

[0040] The lower part of the first fixing shell 4 is provided with a first mounting groove, the light wave emitter 1 is mounted in the first mounting groove, the upper part of the first fixing shell 4 is provided with a second mounting groove, the filter mechanism 2 is clamped in the second mounting groove, a mounting through hole is arranged between the first mounting groove and the second mounting groove and communicates the first mounting groove and the second mounting groove, the refractive lens 7 is arranged in the mounting through hole, and the outer wall of the refractive lens 7 is bonded with the inner wall of the mounting through hole. In this way, the second mounting groove is used as the pre-mounting position of the refractive lens 7, the refractive lens 7 is directly blind-mounted and bonded in the mounting through hole in the assembly process, and the coaxial mounting of the refractive lens 7, the light wave emitter 1, the filter mechanism 2 and the optical fiber 3 is completed, the structure is simple, and the practicability is high.

[0041] In the embodiment, the second fixing shell 5 is a three-segment integrated structure, the first segment of the second fixing shell 5 is a cylinder with an inner diameter greater than or equal to the outer diameter of the vertical part of the stepped ring 6, the second segment of the second fixing shell 5 is a hollow cone, and the third segment of the second fixing shell 5 is a cylinder with an inner diameter equal to the diameter of the optical fiber 3. The lower end surface of the first segment of the cylinder abuts against the upper end surface of the horizontal part of the stepped ring 6. In this way, the inner diameter of the first segment of the cylinder is matched with the outer diameter of the vertical part of the stepped ring 6, which not only ensures the assembly gap tolerance but also forms radial constraint; the second segment of the cone structure serves as a transition area and can guide the optical fiber 3 in space and relieve stress concentration; the strict matching of the inner diameter of the third segment of the cylinder and the diameter of the optical fiber 3 forms circumferential wrapping type fixing and prevents the optical fiber 3 from deviating. The abutting relationship between the first segment of the cylinder and the horizontal part of the stepped ring 6 provides axial support in a surface contact mode, avoiding local stress problems caused by thread locking. The three-segment structure changes in geometry by gradient, which not only ensures the coaxiality of the optical fiber 3 but also integrates the optical path packaging function and the mechanical fixing function in a single component, so that the structure is simple and the practicability is high.

[0042] In the embodiment, the first fixing shell 4 is provided with a first mounting groove, the light wave emitter 1 is mounted in the first mounting groove, the upper part of the first fixing shell 4 is provided with a second mounting groove, the filter mechanism 2 is clamped in the second mounting groove, a mounting through hole is arranged between the first mounting groove and the second mounting groove and communicates the first mounting groove and the second mounting groove, the refractive lens 7 is arranged in the mounting through hole, and the outer wall of the refractive lens 7 is bonded with the inner wall of the mounting through hole. Figure 2, the filter mechanism 2 includes a cylindrical mounting shell 201, the mounting shell 201 is clamped in the second mounting groove, and two filter plates 202 are mounted in the mounting shell 201. Wherein, the horizontal line at the half height position of the mounting shell 201 is taken as the axis of symmetry, the two filter plates 202 are arranged in axial symmetry along the axis of symmetry, and the two filter plates 202 are crossed with the axis of symmetry at an angle of 5 degrees. In this way, the filter mechanism 2 is precisely positioned and stably mounted in the fixing mechanism through the clamping cooperation of the cylindrical mounting shell 201 and the second mounting groove, ensuring the coaxiality of the filter mechanism 2, the light wave emitter 1, the refracting lens 7 and the optical fiber 3. The two filter plates 202 arranged in axial symmetry in the mounting shell 201 are crossed with the axis of symmetry at an angle of 5 degrees, so that the two filter plates 202 form a symmetrical inclined layout in space. This layout can adjust the light path direction through the symmetrical inclined angle when the convergent light passes through the two filter plates 202, reduces the scattering and reflection loss of light wave in the filtering process, and at the same time enhances the filtering effect. Through the inclined design of 5 degrees, the light wave incidence angle is further optimized, avoiding the generation of echo interference on the surface of the filter plate 202, and improving the light wave transmission efficiency.

[0043] In the embodiment, the first fixed shell 4, the stepped ring 6 and the mounting shell 201 are made of stainless steel, and the second fixed shell 5 is made of TPE material. In this way, the coaxial fixed installation of the light wave emitter 1, the refracting lens 7, the filter mechanism 2 and the optical fiber 3 is realized through the first fixed shell 4, the stepped ring 6 and the mounting shell 201 made of stainless steel, ensuring that the LD emitter will not have the problem of part deviation during assembly and use. In addition, the second fixed shell 5 made of TPE (thermoplastic rubber) material can buffer the installation stress on one hand, and form a sealing structure by using the resilience of the material on the other hand, avoid external environmental interference, and improve the stability and service life of the LD emitter.

[0044] In the assembly process of the LD emitter of the present application, the light wave emitter 1 is first welded in the first mounting groove, then the refracting lens 7 is blind assembled and bonded in the mounting hole from the second mounting groove, then the filter mechanism 2 is clamped (in actual application, in order to improve the installation stability of the filter mechanism 2, it can also be welded) in the second mounting groove, then the stepped ring 6 is welded on the upper end face of the first fixed shell 4, then the optical fiber 3 is arranged in the stepped ring 6, and finally the second fixed shell 5 is sleeved on the optical fiber 3, and the lower end face of the second fixed shell 5 abuts against the upper end face of the horizontal part of the stepped ring 6, and the limiting protrusion 601 of the vertical part of the stepped ring 6 is clamped in the limiting groove in the inner wall of the second fixed shell 5, completing the assembly.

[0045] The LD emitter of the present application, in use, the light wave emitter 1 emits light waves, the light waves are converted into convergent light through the refractive lens 7, then the convergent light is filtered through the filter mechanism 2 with an isolation of 60db, then the filtered light waves are refracted into the optical fiber 3, realizing the transmission of optical signals.

[0046] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An LD transmitter, characterized in that: include: A light wave transmitter, a hollow fixing mechanism, a cylindrical refractive lens, a filtering mechanism and an optical fiber; The light wave transmitter is installed at one end of the fixing mechanism, the refractive lens, the filtering mechanism and the optical fiber are coaxially installed in the cavity of the fixing mechanism in sequence, and the optical fiber penetrates the end of the fixing mechanism away from the light wave transmitter; When the light wave transmitter emits light waves, the light waves are converted into convergent light by the refractive lens, and the convergent light is filtered by the filtering mechanism and then enters the optical fiber.

2. The LD transmitter according to claim 1, characterized in that The fixing mechanism includes a first fixing shell, a second fixing shell and a "T"-shaped step ring, the first fixing shell is fixedly connected to one end of the transverse part of the step ring, the second fixing shell is sleeved on the vertical part of the step ring, one end of the second fixing shell is abutted against the other end of the transverse part of the step ring, one end of the optical fiber is passed through the step ring, and the other end of the optical fiber penetrates the second fixing shell away from one end of the step ring.

3. The LD transmitter according to claim 2, characterized in that A first mounting groove is defined at one end of the first fixed housing, and the light wave transmitter is installed in the first mounting groove. A second mounting groove is defined at the other end of the first fixed housing, and the filter mechanism is clamped in the second mounting groove. A mounting through hole connecting the first mounting groove and the second mounting groove is defined between the first mounting groove and the second mounting groove, and the refractive lens is passed through the mounting through hole.

4. The LD transmitter according to claim 2, characterized in that The vertical portion of the stepped ring is further provided with a limiting protrusion, and the second fixed shell is provided with a limiting groove; When the second fixed shell is sleeved on the stepped ring and one end of the second fixed shell abuts against the transverse portion of the stepped ring, the limiting protrusion is clamped in the limiting groove.

5. The LD transmitter according to claim 2, characterized in that The second fixed shell is a three-section integrated structure, the first section of the second fixed shell is a cylinder with an inner diameter greater than or equal to the outer diameter of the vertical part of the step ring, the second section of the second fixed shell is a hollow cone, the third section of the second fixed shell is a cylinder with an inner diameter equal to the diameter of the optical fiber, and the first section of the cylinder of the second fixed shell abuts against the transverse part of the step ring.

6. The LD transmitter according to claim 3, characterized in that The filtering mechanism includes a cylindrical mounting shell, which is clamped in the second mounting groove. Two filters are installed in the mounting shell. A horizontal line located at half the height of the mounting shell is used as the axis of symmetry. The two filters are arranged axially symmetrically along the axis of symmetry, and each filter forms an angle of preset size with the axis of symmetry.

7. The LD transmitter according to claim 6, characterized in that The first fixed housing, the stepped ring and the mounting housing are made of stainless steel, and the second fixed housing is made of TPE.

8. The LD transmitter according to claim 3, characterized in that The refractive lens is inserted into the mounting through hole, and the outer wall of the refractive lens is bonded to the inner wall of the mounting through hole.

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