Novel laser

Abstract

The utility model relates to the technical field of lasers, and provides a novel laser, which comprises a shell, and a laser chip and a spherical lens which are arranged in the shell, the shell comprises a tube base and a shell cap arranged on the tube base in a covering mode. The shell cap is a full-transparent cap; the laser chip and the spherical lens are respectively arranged above the tube seat; the emergent end of the laser chip faces the spherical lens; the laser chip is electrically connected with the plurality of tube legs; and a plurality of pipe legs extend out of the shell from the pipe seat. According to the utility model, a product side surface light emitting and light path internal coupling mode is adopted, which is convenient for use and assembly in a finished product.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, and in particular to a novel laser. Background Technology

[0002] A laser is a device that emits laser light. Currently, TO-type lasers are commonly used; these are semiconductor lasers that encapsulate a laser diode chip within a TO-type metal casing. TO-type lasers emit laser light from the top. They utilize a metal tube combined with a non-spherical lens cap, requiring the use of reflectors to change the direction of the light path before emitting the laser light through an optical window at the top.

[0003] However, TO-type lasers emit laser light through an optical window at the top, resulting in a relatively complex internal structure, larger space requirements, and more materials used; their application also has certain limitations. Installing TO-type lasers inside many products requires bending the pins, increasing the risk of compromising product sealing. Furthermore, existing lasers experience significant signal loss when the fiber is bent at large angles. Both practicality and cost need improvement. Utility Model Content

[0004] This invention mainly addresses the technical problems of existing lasers that emit laser light through an optical window at the top, resulting in relatively complex internal structures and large space requirements for the product. It proposes a new type of laser that emits light from the side of the product and uses internal coupling of the optical path, making it easier to use and assemble in the finished product.

[0005] This utility model provides a novel laser, comprising: a housing and a laser chip and a spherical lens disposed within the housing;

[0006] The housing includes a tube base and a housing cap covering the tube base; the housing cap is a fully transparent cap;

[0007] The laser chip and the spherical lens are respectively mounted above the tube base;

[0008] The laser chip's output end faces the spherical lens;

[0009] The laser chip is electrically connected to multiple pins; the multiple pins extend from the socket to the outside of the housing.

[0010] Preferably, the top of the cap is hemispherical.

[0011] Preferably, the laser chip is mounted on the pad via a carrier, the spherical lens is mounted on the pad via a pad block, and the pad is located above the tube base.

[0012] Preferably, a thermistor is disposed next to the laser chip, and the thermistor is located on the carrier.

[0013] Preferably, a cooler is provided on the tube seat, and the cooler is located below the pad.

[0014] This invention provides a novel laser that emits light from the side of the product and uses internal optical coupling, facilitating assembly and use in finished products. The laser chip is encapsulated within the laser housing as a stable output light source. The cap-shaped housing structure ensures the laser's practicality, stability, and reliability. The optimized structure reduces the product's footprint while maintaining high reliability, ensuring miniaturization and reliability. This laser eliminates the need for bent leads, saving time in the lead bending process and preventing damage to the housing, thus ensuring the product's hermeticity and reliability. This invention eliminates the need for optical fibers, resulting in lower loss. This invention features small size, high practicality, and high reliability. The packaging structure maintains good reliability and high sealing while occupying less space. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the novel laser provided by this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the novel laser provided by this utility model;

[0017] Figure 3 This is a side view of the novel laser provided by this utility model;

[0018] Figure 4 This is an installation diagram of the novel laser provided by this utility model.

[0019] Reference numerals: 1. Cap; 2. Pad; 3. Cooler; 4. Tube socket; 5. Lens; 6. Thermistor; 7. Chip; 8. Carrier; 9. Tube leg; 10. Pad plate. Detailed Implementation

[0020] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this 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 for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0021] Example 1

[0022] like Figure 1-3 As shown in the figure, a novel laser provided by this utility model includes: a housing and a laser chip 7 and a spherical lens 5 disposed within the housing.

[0023] The housing includes a tube base 4 and a cap 1 covering the tube base 4. The cap 1 is cap-shaped, with a hemispherical top and is fully transparent.

[0024] The laser chip 7 and the spherical lens 5 are located inside the housing. The laser chip 7 and the spherical lens 5 are respectively mounted above the tube socket 4; the emitting end of the laser chip 7 faces the spherical lens 5. The spherical lens 5 can convert the optical signal output by the laser chip 7 into a parallel optical signal. The laser chip 7 can be a 1653.7nm DFB laser chip. The laser chip 7 is electrically connected to multiple tube legs 9; the multiple tube legs 9 are arranged on the tube socket 4 and extend from the tube socket 4 to the outside of the housing.

[0025] The principle of laser generation by laser chip 7: Through the excitation method of injecting current through multiple pins 9, the population inversion of non-equilibrium charge carriers is achieved between the energy bands (conduction band and valence band) of laser chip 7. When a large number of electrons and holes in the population inversion state recombine, stimulated emission is generated, and laser is produced.

[0026] Specifically, the laser chip 7 is mounted on the pad 10 via the carrier 8, and the spherical lens 5 is mounted on the pad 10 via the pad block 2. The pad 10 is located above the tube base 4.

[0027] The working principle of this novel laser is as follows: The electrical signal is transmitted to the laser chip 7 through the tube 9. The light emitted by the laser chip 7 is coupled into a parallel light beam through the spherical lens 5. The light propagates in a straight line in a uniform medium, so after the parallel light passes through the shell 1, it emits a parallel light signal, realizing side emission.

[0028] Example 2

[0029] like Figure 1-3 As shown, this embodiment, based on Embodiment 1, includes a thermistor 6 and a cooler 3. Specifically, the thermistor 6 is positioned next to the laser chip 7 and is located on the carrier 8. The thermistor 6 can collect the temperature near the laser chip 5. The cooler 3 is positioned on the tube socket 4 and is located below the pad 10. The cooler 3 utilizes the Peltier effect to generate heating and cooling.

[0030] The cooler 3 can heat and cool, and the thermistor 6 can provide feedback on the temperature inside the laser, providing support for the external controller to achieve precise temperature control. Through the cooperation between the cooler 3 and the thermistor 6, this utility model enables the laser chip 7 to work in a steady state, so that the laser chip 7 can maintain a stable laser signal output in a stable working environment.

[0031] The novel laser of this embodiment, when applied, such as Figure 4 As shown, the laser is fixed to a heat dissipation structure, such as an aluminum or copper heat sink or a metal casing, by means of mounting holes or pin soldering. This reduces the temperature of the hot end of the product, thereby achieving continuous and stable temperature control inside the product. The heat dissipation structure effectively absorbs and dissipates the heat emitted by the product. Furthermore, during use, the laser's pins are soldered to further enhance its heat dissipation performance.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel laser characterized in that, It comprises a shell and a laser chip (7) and a spherical lens (5) arranged in the shell. The shell comprises a tube base (4) and a shell cap (1) arranged on the tube base (4); the shell cap (1) is a full transparent cap. The laser chip (7) and the spherical lens (5) are respectively arranged above the tube base (4). The exit end of the laser chip (7) faces the spherical lens (5). The laser chip (7) is electrically connected with a plurality of tube legs (9); the plurality of tube legs (9) extend out of the tube base (4) to outside of the shell.

2. The novel laser as claimed in claim 1, wherein, The top of the shell cap (1) is semispherical.

3. The novel laser as claimed in claim 1, wherein, The laser chip (7) is arranged on a backing plate (10) through a carrier (8), the spherical lens (5) is arranged on the backing plate (10) through a cushion block (2), and the backing plate (10) is located above the tube base (4).

4. The novel laser as claimed in claim 3, wherein, A thermistor (6) is arranged beside the laser chip (7), and the thermistor (6) is located on the carrier (8).

5. The novel laser as claimed in claim 3, wherein, A refrigerator (3) is arranged on the tube base (4), and the refrigerator (3) is located below the backing plate (10).

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