Biconvex lens laser

Abstract

The utility model discloses a biconvex lens laser, and relates to the technical field of optical communication. Wherein the tube shell of the biconvex lens laser comprises a side wall, and a through hole is formed in the side wall; the base is connected with the tube shell, and an accommodating space is formed between the base and the tube shell; the biconvex lens comprises a first convex surface and a second convex surface, the first convex surface and the second convex surface are located on the two sides of the through hole respectively, and the biconvex lens and the side wall are provided with a connecting part; the light source is arranged in the containing space and faces the biconvex lens. And the overall stability of the structure is enhanced by the connecting part between the biconvex lens and the side wall of the tube shell. Therefore, not only is the stability of the lens in the packaging process improved, but also the risk of lens displacement or damage caused by factors such as vibration or temperature change and the like is reduced. The high-reliability structure ensures the stability and the performance consistency of the lens in long-term use.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, and in particular to a double convex lens laser. Background Technology

[0002] Currently, edge-emitting lasers, such as FP lasers and DFB lasers, widely employ spherical lenses in their packaging designs. Taking the spherical cap structure process as an example, firstly, a spherical glass lens needs to be fabricated and then embedded in the central through-hole of the metal casing, ensuring it does not penetrate the through-hole. Next, a mixed glass solder is prepared in a specific ratio and evenly coated at the contact point between the spherical lens and the central through-hole of the metal casing, forming a ring of solder-glass adhesive. This is then placed in a soldering furnace for high-temperature sintering. After natural cooling, the spherical glass lens and the metal casing are welded together to form a TO cap.

[0003] However, this spherical design has many drawbacks. In terms of mechanical dimensions, the matching requirement between the sphere diameter and the diameter of the central through-hole in the metal casing is extremely high. During assembly, the spherical lens cannot pass through the central hole of the casing, nor can it be too small; otherwise, the height deviation of the spherical lens's center will be too large after assembly, significantly increasing production and time costs. Regarding packaging consistency, due to the complex structural design, packaging consistency issues, such as inconsistent focal lengths, are very likely to occur during production, thus affecting overall performance. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, this utility model provides a double convex lens laser.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] The biconvex lens laser provided by this utility model includes:

[0007] The tube shell includes a side wall, on which a through hole is formed;

[0008] A base, which is connected to the shell, and an accommodating space is provided between the base and the shell;

[0009] A biconvex lens, comprising a first convex surface and a second convex surface, wherein the first convex surface and the second convex surface are respectively located on both sides of the through hole, and the biconvex lens has a connecting portion to the side wall;

[0010] A light source is disposed within the accommodating space and oriented toward the biconvex lens.

[0011] In one possible implementation of this application, the through hole is located in the middle of the sidewall.

[0012] In one possible implementation of this application, the first convex surface is disposed outside the accommodating space, and the second convex surface is disposed inside the accommodating space.

[0013] In one possible implementation of this application, the connecting portion is located between the first convex surface and the sidewall.

[0014] In one possible implementation of this application, the connecting portion is provided on both sides of the through hole.

[0015] In one possible implementation of this application, a heat sink is further included, which is disposed within the accommodating space and located between the base and the light source.

[0016] In one possible implementation of this application, a backlight detector is also included, which is disposed within the accommodating space.

[0017] In one possible implementation of this application, the light source is a side-emitting laser diode.

[0018] Compared to existing technologies, the biconvex lens laser of this invention enhances the overall structural stability through a connection between the biconvex lens and the sidewall of the housing. This not only improves the lens's stability during packaging but also reduces the risk of lens displacement or damage due to factors such as vibration or temperature changes. The highly reliable structure ensures the lens's stability and consistent performance over long-term use. Compared to traditional spherical lenses, it reduces the complex manufacturing steps required. This not only simplifies and simplifies the production process but also significantly improves overall production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0020] Figure 1 This is a schematic diagram of the structure of the double convex lens laser provided by this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the housing and the double convex lens in the double convex lens laser provided by this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Tube shell; 110. Side wall; 120. Through hole; 20. Base; 30. Biconvex lens; 310. First convex surface; 320. Second convex surface; 330. Connecting part; 40. Light source; 50. Heat sink; 60. Backlight detector; 70. Insert. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the embodiments of this utility model, the terms "first," "second," etc., are used only to distinguish related technical features and do not indicate a sequential order. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0026] In this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0027] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] The biconvex lens laser provided by this invention enhances the overall structural stability through a connection between the biconvex lens and the sidewall of the housing. This not only improves the lens's stability during packaging but also reduces the risk of lens displacement or damage due to factors such as vibration or temperature changes. The highly reliable structure ensures the lens's stability and consistent performance over long-term use. Compared to traditional spherical lenses, it reduces the complex manufacturing steps required. This not only simplifies and simplifies the production process but also significantly improves overall production efficiency. Example

[0029] This utility model embodiment provides a biconvex lens laser, such as... Figure 1 and Figure 2As shown, the device includes a shell 10, which includes a sidewall 110 with a through hole 120; a base 20 connected to the shell 10, with an accommodating space between the base 20 and the shell 10; a biconvex lens 30, which includes a first convex surface 310 and a second convex surface 320, located on both sides of the through hole 120, and a connecting portion 330 between the biconvex lens 30 and the sidewall 110; and a light source 40 disposed within the accommodating space and facing the biconvex lens 30.

[0030] The biconvex lens 30 with this structure can reduce the process steps required for traditional spherical lenses, improve production efficiency, save production costs, and the biconvex lens 30 of this application has high structural reliability, thereby ensuring high consistency and high reliability of lens packaging.

[0031] Due to its common and mature manufacturing process, the widespread application of the biconvex lens 30 in optical communication systems can reduce the complexity and cost of the production process. The biconvex lens 30 of this application has a simple structure and relatively low cost, which can effectively reduce the overall cost of the laser emitting module.

[0032] Furthermore, in terms of optical performance and characteristics, there is no significant difference between the spherical lens and the biconvex lens 30. Through reasonable design of the lens curvature radius, the coupling focal length is basically the same as that of the ferrule 70.

[0033] like Figure 2 As shown, in at least one possible embodiment, the through-hole 120 is located in the middle of the sidewall 110. The centrally located through-hole 120 helps to disperse stress on the sidewall 110, making the entire housing 10 structure more stable. This structure can reduce structural deformation or damage caused by external forces (such as vibration, impact, etc.), further improving the reliability and lifespan of the laser. The centrally located through-hole 120 can serve as a precise positioning reference, facilitating higher precision control during the packaging process. This helps ensure precise alignment between the biconvex lens 30 and the light source 40, thereby improving the overall performance and stability of the laser.

[0034] like Figure 2 As shown, in at least one possible embodiment, the first convex surface 310 is disposed outside the accommodating space, and the second convex surface 320 is disposed inside the accommodating space. More specifically, the arc length of the first convex surface 310 may be more than twice the arc length of the second convex surface 320. The longer arc of the first convex surface 310 may be able to more effectively collect and focus light from the second convex surface 320. This helps to guide more light to the predetermined target area, improving the output efficiency and beam quality of the laser.

[0035] like Figure 2As shown, in at least one possible embodiment, the connecting portion 330 is located between the first convex surface 310 and the sidewall 110. More specifically, the connecting portion 330 can be located on both sides of the through hole 120. This design, with connecting portions 330 on both sides of the through hole 120, ensures a secure mounting of the biconvex lens 30 on the housing 10. This double connection not only improves the lens's vibration and impact resistance but also helps prevent displacement or detachment of the lens due to external forces during use. The connecting portion 330 helps disperse the stress between the lens and the sidewall 110, reducing the risk of structural damage due to stress concentration. This optimized stress distribution makes the entire laser structure more stable and improves long-term reliability.

[0036] like Figure 1 As shown, in at least one possible embodiment, the biconvex lens 30 laser provided by this embodiment of the present invention further includes a heat sink 50, which is disposed within the accommodating space and located between the base 20 and the light source 40. It is understood that the main function of the heat sink 50 is to effectively absorb and conduct the heat generated by the light source 40 during operation. By placing the heat sink 50 between the base 20 and the light source 40, it is ensured that heat is rapidly absorbed and dispersed over a larger area, thereby improving heat dissipation efficiency. This helps prevent the light source 40 from overheating, extends its service life, and maintains the stable performance of the laser. Overheating is one of the common causes of laser failure. By introducing the heat sink 50 design, the laser failure rate due to overheating can be significantly reduced. This structure improves the overall reliability of the laser, enabling it to operate stably under various operating conditions. Traditional thermal management schemes may require additional heat dissipation equipment, such as fans or radiators. However, the heat sink 50 design in this embodiment of the present invention simplifies the thermal management scheme, achieving efficient heat dissipation without the need for additional heat dissipation equipment. This helps reduce the manufacturing and maintenance costs of the laser.

[0037] like Figure 1As shown, in at least one possible embodiment, the biconvex lens 30 laser provided by this embodiment of the present invention also includes a backlight detector 60, which is disposed within the accommodating space. More specifically, the backlight detector 60 may be connected to the base 20 via a heat sink 50. In this way, the excellent thermal conductivity of the heat sink 50 allows the heat generated by the backlight detector 60 during operation to be rapidly conducted to the base 20 and then dissipated through the heat dissipation system. This helps to reduce the operating temperature of the backlight detector 60, preventing performance degradation or damage due to overheating, thereby improving the overall thermal management efficiency of the laser. The heat sink 50, acting as a bridge connecting the backlight detector 60 and the base 20, not only plays a role in heat conduction but also strengthens the structural connection between the two. This makes the position of the backlight detector 60 within the laser more stable, reducing the risk of displacement or damage due to vibration or impact.

[0038] One of the main functions of the backlight detector 60 is to monitor the backlight current output by the laser to determine the performance of the laser chip. By placing the backlight detector 60 within the housing space and connecting it to the base 20 via the heat sink 50, the backlight detector 60 can accurately and stably monitor the backlight current, thereby improving the overall performance and reliability of the laser. Placing the backlight detector 60 within the housing space and connecting it to the base 20 via the heat sink 50 simplifies the internal wiring and installation work of the laser. This makes the internal structure of the laser more compact and neat, which is beneficial for reducing manufacturing costs and improving production efficiency.

[0039] In at least one possible embodiment, the light source 40 is a side-emitting type laser diode, such as an FP laser or a DFB laser. As a light source 40, the laser diode emits a high-quality beam with a low divergence angle and high directionality. This helps ensure that the light, after passing through the biconvex lens 30, forms a clear, focused spot, improving the laser's output efficiency and beam quality. The laser diode has high electro-optical conversion efficiency, enabling it to convert more electrical energy into light energy. This means that with the same input power, the laser diode can produce higher optical output power, thereby improving the overall performance of the laser. Laser diodes typically have a long lifespan and can maintain stable performance under long-term continuous operation. This helps reduce the laser's maintenance costs and ensures its reliability in various applications. The laser diode is small and compact, making it suitable for integration into the biconvex lens 30 laser. This helps reduce the overall size of the laser, improving its portability and flexibility. The light output of the laser diode can be precisely controlled by current modulation. This allows the biconvex lens 30 laser to adjust the optical output power and beam characteristics as needed to meet different application requirements. The laser diode consumes less power during operation, helping to reduce the overall energy consumption of the laser. This is particularly important for laser applications that require long-term operation, as it can significantly reduce energy consumption and operating costs. Laser diodes, as a mature light source technology, offer high reliability and stability. This allows the biconvex lens laser to maintain stable performance output under various operating conditions, improving the overall reliability of the system.

[0040] This utility model embodiment also provides a process for fabricating a biconvex lens 30 laser, which involves cutting the glass used to make the biconvex lens 30 into glass pillars; assembling the glass pillars into through holes 120 on the tube shell 10; and melting the glass pillars onto a tube cap and cooling them to form a biconvex lens 30 laser as described above. Using the biconvex lens 30 laser fabrication process provided by this utility model embodiment can reduce the use of glass solder, further reducing the overall cost and making it more environmentally friendly. More specifically, the glass pillars can be melted at high temperatures under nitrogen protection and cooled to form the tube cap. In this way, the glass preform is directly melted onto the tube cap, making the lens and tube cap a single unit.

[0041] First, the glass material for the biconvex lens 30 is cut into glass pillars. Next, the cut glass pillars are fitted into the through-hole 120 on the casing 10. Under nitrogen protection, the glass pillars are melted at high temperature and then cooled and solidified on the cap. This step is crucial, as it determines the shape, optical performance, and bonding strength between the biconvex lens 30 and the cap. Through melting and cooling, the glass preform is directly melted onto the cap, uniting the lens and cap as one, eliminating the need for additional welding steps.

[0042] Traditional fabrication processes for biconvex lens 30 lasers may require the use of glass solder to fix the lens and cap. However, the fabrication process of this invention involves directly cooling a molten glass column onto the cap, eliminating the need for glass solder and thus reducing overall costs. Reducing the use of glass solder not only lowers material costs but also reduces waste emissions during production, making it more environmentally friendly. The melt-cooling fabrication process results in a tighter bond between the lens and cap, improving bonding strength. This helps ensure the long-term stability and reliability of the laser. The melt-cooling fabrication process simplifies the fabrication process of biconvex lens 30 lasers and improves production efficiency. During the melt-cooling process, the shape and curvature of the lens can be precisely controlled, thereby optimizing its optical performance. This helps ensure the laser outputs a high-quality beam.

[0043] Compared with existing technologies, the biconvex lens laser provided in this embodiment enhances the overall structural stability of the connection portion 330 between the biconvex lens 30 and the side wall 110 of the housing 10. This not only improves the stability of the lens during the packaging process but also reduces the risk of lens displacement or damage caused by factors such as vibration or temperature changes. The highly reliable structure ensures the stability and performance consistency of the lens during long-term use. Compared with traditional spherical lenses, it reduces the complex process steps required in manufacturing. This not only makes the production process simpler and more efficient but also significantly improves overall production efficiency.

[0044] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model.

Claims

1. A lenticular laser, characterized by, Comprise: A tube shell (10) comprising a side wall (110) with a through hole (120) formed thereon; A base (20) connected with the tube shell (10), and having a containing space between the tube shell (10) and the base (20); A lenticular lens (30) comprising a first convex surface (310) and a second convex surface (320), the first convex surface (310) and the second convex surface (320) are respectively located on both sides of the through hole (120), and the lenticular lens (30) has a connecting part (330) with the side wall (110); A light source (40) arranged in the containing space and facing the lenticular lens (30).

2. The lenticular laser of claim 1, wherein, The through hole (120) is arranged in the middle of the side wall (110).

3. The lenticular laser of claim 1 or 2, wherein, The first convex surface (310) is arranged outside the containing space, and the second convex surface (320) is arranged inside the containing space.

4. The lenticular laser of claim 1, wherein, The connecting part (330) is located between the first convex surface (310) and the side wall (110).

5. The lenticular laser of claim 1, wherein, Both sides of the through hole (120) have the connecting part (330).

6. The lenticular laser of claim 1, wherein, Further comprising a heat sink (50) arranged in the containing space, and the heat sink (50) is located between the base (20) and the light source (40).

7. The lenticular laser of claim 1, wherein, Further comprising a backlight detector (60) arranged in the containing space.

8. The lenticular laser of claim 1, wherein, The light source (40) is a side-emitting type laser diode.

Images