360-degree laser module

Abstract

The invention relates to a 360-degree laser module. The 360-degree laser module comprises a shell structure, a light source structure and a conical mirror structure, the shell structure comprises a shell, a circuit bin, a light source mounting bin, a light hole and three limiting screws, insulating pads are fixedly mounted at the ends, close to each other, of the three limiting screws, an external thread ring sleeve is fixedly mounted at the top of the shell, a sleeve is movably mounted on the outer side of the external thread ring sleeve, and a bin cover is movably mounted on the front face of the shell; the light source structure comprises a carrier plate, two binding posts are fixedly mounted in the carrier plate, a heat sink, an edge-emitting laser chip and a prism are fixedly mounted at the top of the carrier plate, a laser box cover is fixedly mounted at the top of the carrier plate, and a light transmitting mirror is fixedly mounted in the top wall of the laser box cover; the conical mirror structure comprises a glass tube, and the top of the glass tube is provided with a reflective conical mirror. The 360-degree laser module has the advantages that the light source is easy to assemble, the length of the laser module is short, and the light source can be replaced.

Description

Technical Field

[0001] This invention relates to the field of laser technology, specifically a 360-degree laser module. Background Technology

[0002] A laser level is a high-precision measuring tool that uses a laser beam to accurately measure horizontal or vertical alignment. It is suitable for various indoor and outdoor scenarios, such as measuring the flatness and verticality of walls and floors during construction, and ensuring precise alignment during furniture installation and painting installation in interior decoration. With its high precision and versatility, the laser level has become an indispensable tool in modern construction and decoration.

[0003] Commercially available 360-degree laser modules achieve a 360-degree ring of light by illuminating a conical mirror with a laser source. The packaging process requires the light source and the conical mirror to be coaxially packaged. Currently, TO-packaged lasers are used as the light source. The TO-packaged laser is pressed into a flange sleeve before being mounted as a conical mirror. Once pressed into the flange sleeve, the TO laser is fixed and the emission angle of the laser beam cannot be adjusted, requiring high precision in the pressing process. TO-source 360-degree laser modules are also relatively long, requiring considerable assembly space. Furthermore, as the device is used, damage to the light source necessitates the replacement of the entire laser module, resulting in high maintenance costs. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a 360-degree laser module, which has advantages such as simple light source assembly, short laser module length, and replaceable light source.

[0005] This invention provides the following technical solution: A 360-degree laser module includes a housing structure, a light source structure, and a conical mirror structure. The light source structure is movably installed on the inner side of the housing structure, and the conical mirror structure is fixedly installed on the top of the housing structure. The housing structure includes a housing, an inner circuit compartment, a light source mounting compartment at the top of the circuit compartment and inside the housing, a light-transmitting hole at the top of the light source mounting compartment and inside the housing, three limiting screws extending into the inner side of the light source mounting compartment being movably mounted on the outer side of the housing, an insulating pad being fixedly mounted at the end of each of the three limiting screws that are close to each other, an external threaded ring sleeve being fixedly mounted on the top of the housing, a sleeve being movably mounted on the outer side of the external threaded ring sleeve, and a compartment cover being movably mounted on the front of the housing. The light source structure includes a carrier plate, two terminals are fixedly installed inside the carrier plate, a heat sink is fixedly installed on the top of the carrier plate, a side-emitting laser chip is fixedly installed on the top of the heat sink, a prism is fixedly installed on one side of the heat sink and on the top of the carrier plate, a laser housing cover is fixedly installed on the top of the carrier plate, and a light-transmitting lens is fixedly installed inside the top wall of the laser housing cover. The conical mirror structure includes a glass tube, and a reflective conical mirror extending into the inside of the glass tube is fixedly installed at the top of the glass tube.

[0006] Furthermore, the circuit compartment and the light source mounting compartment are partially connected. The connection provides the circuit lead-out of the light source structure, while the disconnected part provides the bottom support and heat transfer of the light source structure. The bottom surface of the light source mounting compartment is coated with a heat dissipation insulating layer, such as a graphene heat dissipation insulating layer. The light source mounting compartment and the light-transmitting hole are connected.

[0007] Furthermore, the inner side of the sleeve is provided with an internal thread that is compatible with the external threaded ring sleeve. The inside of the sleeve and the top of the light-transmitting hole is a through hole. An optical lens is fixedly installed in the through hole. By rotating the sleeve, the distance between the sleeve and the housing can be adjusted, thereby making the distance between the optical lens and the light source structure adjustable, which helps to focus the light onto the reflector.

[0008] Furthermore, the three limiting screws extend from the left, right and back of the housing into the interior of the light source mounting compartment, respectively. The interior of the housing is provided with threaded holes that are adapted to the corresponding limiting screws. By rotating the screws, the light emission angle of the light source structure on the inner side can be adjusted and locked in place.

[0009] Furthermore, an installation groove adapted to the cover is provided on the inner side of the housing and on the front of the light source mounting compartment. The housing and the cover are connected by a snap-fit, which facilitates the assembly of the light source structure.

[0010] Furthermore, the housing has five through holes inside and outside the circuit compartment, four of which are used for extended installation connections and one for positioning.

[0011] Furthermore, the top of the heat sink is coated with a solder layer, and the top surface of the solder layer is fixedly connected to the bottom surface of the edge-emitting laser chip. Gold wires extending to the corresponding terminals are respectively installed on the top surface of the edge-emitting laser chip and the top surface of the solder layer, extending the electrodes of the edge-emitting laser chip to the bottom outer side of the edge-emitting laser chip, which facilitates the connection and installation of external circuits.

[0012] Furthermore, the prism is a right-angle prism, with its inclined surface located on one side of the laser-emitting chip and below the light-transmitting lens.

[0013] Furthermore, the bottom of the reflective cone, the optical lens, and the light-transmitting hole are coaxial optical paths.

[0014] Furthermore, the top surface of the sleeve is provided with a connecting groove that is compatible with the glass tube.

[0015] Compared with the prior art, the present invention provides a 360-degree laser module, which has the following beneficial effects: 1. This 360-degree laser module features a light source mounting compartment, limiting screws, and insulating pads. The light source mounting compartment provides installation space for the light source structure, while the insulating pads provide insulation between the limiting screws and the light source structure within the metal casing. The three limiting screws extend from the left, right, and back of the casing into the interior of the light source mounting compartment, and the interior of the casing has threaded holes that match the corresponding limiting screws. The light source structure is fixed by adjusting the three limiting screws, resulting in simple light source assembly and a high yield rate.

[0016] 2. This 360-degree laser module uses a COS-packaged laser light source, saving the length of the TO series light source pins. The housing structure has been redesigned based on the original TO light source module housing, which can effectively reduce the length of the entire laser module, achieving the goal of a short laser module length. This makes it easier for level manufacturers to provide more assembly specifications of modules for different product specifications.

[0017] 3. This 360-degree laser module features a cover that is movably mounted on the housing. The housing has an inner side with a mounting groove on the front of the light source mounting compartment that matches the cover. The housing and the cover are connected by a snap-fit ​​mechanism. When the light source is damaged, only the same model of light source structure needs to be replaced, resulting in low maintenance costs. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the structure of a 360-degree laser module according to the present invention; Figure 2 This is a cross-sectional view of the housing structure of a 360-degree laser module according to the present invention; Figure 3 This is a cross-sectional view of the light source structure of a 360-degree laser module according to the present invention; Figure 4 This is a top view of the light source structure of a 360-degree laser module of the present invention without the laser housing cover installed; Figure 5 This is a schematic diagram of the bottom surface of the light source structure of a 360-degree laser module according to the present invention; Figure 6 This is a cross-sectional view of the conical mirror structure of a 360-degree laser module according to the present invention; Figure 7 This is a front view of the mounting compartment for a 360-degree laser module without an installed light source, according to the present invention. Figure 8 This is a front view of a 360-degree laser module according to the present invention; Figure 9 This is a schematic diagram of the back of a 360-degree laser module according to the present invention; Figure 10 This is a schematic diagram of the bottom surface of a 360-degree laser module according to the present invention; Figure 11 This is a top view of a 360-degree laser module according to the present invention.

[0019] In the picture: 1. Shell structure, 11. Shell, 12. Circuit compartment, 13. Light source mounting compartment, 131. Compartment cover, 14. Limiting screw, 15. Insulating pad, 16. Light transmission hole, 17. External threaded ring sleeve, 18. Sleeve, 19. Optical lens; 2 Light source structure, 21 Carrier board, 22 Heat sink, 23 Edge-emitting laser chip, 24 Prism, 25 Laser housing cover, 26 Transmitting lens, 27 Terminal block, 28 Gold wire; 3. Conical mirror structure, 31. Glass tube, 32. Reflecting cone. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1 , Figure 7 A 360-degree laser module includes a housing structure 1, a light source structure 2, and a conical mirror structure 3. The light source structure 2 is movably installed on the inner side of the housing structure 1, and the conical mirror structure 3 is fixedly installed on the top of the housing structure 1.

[0022] Please see Figure 2 , Figure 8 , Figure 11 The housing structure 1 includes a housing 11. A circuit compartment 12 is provided on the inner side of the housing structure 1. A light source mounting compartment 13 is provided on the top of the circuit compartment 12 and inside the housing 11. A light-transmitting hole 16 is provided on the top of the light source mounting compartment 13 and inside the housing 11. Three limiting screws 14 are movably installed on the outer side of the housing 11 and extend to the inner side of the light source mounting compartment 13. An insulating pad 15 is fixedly installed at the close end of each of the three limiting screws 14. An external threaded ring sleeve 17 is fixedly installed on the top of the housing 11. A sleeve 18 is movably installed on the outer side of the external threaded ring sleeve 17. A compartment cover 131 is movably installed on the front of the housing 11.

[0023] Please see Figure 3 , Figure 4 , Figure 5 , Figure 10 The light source structure 2 includes a carrier plate 21. Two terminals 27 are fixedly installed inside the carrier plate 21. A heat sink 22 is fixedly installed on the top of the carrier plate 21. A side-emitting laser chip 23 is fixedly installed on the top of the heat sink 22. A prism 24 is fixedly installed on the left side of the heat sink 22 and on the top of the carrier plate 21. A laser housing cover 25 is fixedly installed on the top of the carrier plate 21. A light-transmitting mirror 26 is fixedly installed inside the top wall of the laser housing cover 25.

[0024] Please see Figure 6 The conical mirror structure 3 includes a glass tube 31, and a reflective conical mirror 32 extending to the inside of the glass tube 31 is fixedly installed at the top of the glass tube 31.

[0025] In this embodiment, the circuit compartment 12 and the light source mounting compartment 13 are partially connected. The connection provides the circuit lead-out of the light source structure 2, and the non-connected part provides the bottom support and heat transfer of the light source structure 2. The bottom surface of the light source mounting compartment 13 is coated with a heat dissipation insulating layer, such as a graphene heat dissipation insulating layer. The light source mounting compartment 13 is connected to the light transmission hole 16.

[0026] In this embodiment, the inner side of the sleeve 18 is provided with an internal thread that is compatible with the external threaded ring sleeve 17. The inside of the sleeve 18 and the top of the light-transmitting hole 16 is a through hole. An optical lens 19 is fixedly installed in the through hole. By rotating the sleeve 18, the distance between the sleeve 18 and the housing 11 can be adjusted, thereby making the distance between the optical lens 19 and the light source structure 2 adjustable, which helps to focus the light onto the reflective cone mirror 32.

[0027] In this embodiment, three limiting screws 14 extend from the left, right, and back sides of the housing 11 into the interior of the light source mounting chamber 13, respectively. Figure 2 , Figure 9 As shown. The housing 11 has a threaded hole inside that matches the corresponding limiting screw 14. By rotating the screw 14, the light emission angle of the inner light source structure 2 can be adjusted and locked in place.

[0028] In this embodiment, an installation groove adapted to the cover 131 is provided on the inner side of the housing 11 and on the front of the light source mounting compartment 13. The housing 11 and the cover 131 are connected by a snap-fit, which facilitates the assembly of the light source structure 2.

[0029] In this embodiment, as Figure 11 As shown, the housing 11 has five through holes inside and outside the circuit compartment 12, four of which are used for extended installation connections and one through hole is used for positioning.

[0030] In this embodiment, the top of the heat sink 22 is coated with a solder layer, and the top surface of the solder layer is fixedly connected to the bottom surface of the edge-emitting laser chip 23. Gold wires 28 extending to the corresponding terminals 27 are respectively installed on the top surface of the edge-emitting laser chip 23 and the top surface of the solder layer. Figure 4 As shown, the electrodes of the edge-emitting laser chip 23 are extended to the outer bottom of the edge-emitting laser chip 23 to facilitate the connection and installation of external circuits.

[0031] In this embodiment, the prism 24 is a right-angle prism, and the inclined surface of the prism 24 is located to the left of the side-emitting laser chip 23 and below the light-transmitting lens 26.

[0032] In this embodiment, the bottom of the reflective cone 32, the optical lens 19, and the light-transmitting hole 16 form a coaxial optical path.

[0033] In this embodiment, the top surface of the sleeve 18 is provided with a connecting groove that is compatible with the glass tube 31.

[0034] In this embodiment, the housing structure 1 and the conical mirror structure 3 are first installed together. Then, the light source structure 2 is installed into the light source mounting compartment 13 opened inside the housing structure 1. The exposed terminal 27 is electrically connected through the partial connection gap between the circuit compartment 12 and the light source mounting compartment 13. After adjusting the installation position of the light source structure 2, external equipment is used to apply pressure (fixing auxiliary force) to the light source structure 2 in the direction of the circuit compartment 12. After fixing the light source structure 2 by turning the three limit screws 14, the pressure applied to the light source structure 2 by the external equipment is removed. The circuit is powered on for testing and the sleeve 18 is rotated to adjust the distance between the optical lens 19 and the light source structure 2. The laser is focused onto the reflective conical mirror 32 and then the sleeve 18 is fixed with glue. After the assembly test is qualified, the external drive circuit board is placed into the circuit compartment 12 and the inner edge of the circuit compartment 12 is sealed with glue. After completion, the compartment cover 131 is fastened.

[0035] The beneficial effects of the above embodiments are as follows: This 360-degree laser module, by setting up a light source mounting chamber 13, limiting screws 14, and insulating pads 15, provides mounting space for the light source structure 2. The insulating pads 15 ensure that the limiting screws 14 are insulated from the light source structure 2 in the metal shell. The three limiting screws 14 extend from the left, right, and back of the shell 11 into the interior of the light source mounting chamber 13, and the interior of the shell 11 has threaded holes that are compatible with the corresponding limiting screws 14. The light source structure 2 is fixed by adjusting the three limiting screws 14. The light source assembly is simple and the yield rate is high.

[0036] This 360-degree laser module uses a COS-packaged laser light source, saving the length of the TO series light source pins. The housing structure has been redesigned based on the original TO light source module housing, which can effectively reduce the length of the entire laser module, achieving the goal of a short laser module length. This makes it easier for level manufacturers to provide more assembly specifications of modules for different product specifications.

[0037] The 360-degree laser module has a housing cover 131 that is movably installed on the housing 11. The housing 11 has an inner side with a mounting groove on the front of the light source mounting compartment 13 that matches the housing cover 131. The housing 11 and the housing cover 131 are connected by a snap-fit. When the light source is damaged, only the same model of light source structure 2 needs to be replaced, resulting in low maintenance costs.

[0038] All electrical components in the above scheme are electrically connected to the main controller and power supply. The main controller can be a conventional known device such as a computer that performs control, and it adopts existing publicly available power connection technology.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 360-degree laser module, comprising a housing structure (1), a light source structure (2), and a conical mirror structure (3), characterized in that: A light source structure (2) is movably installed on the inner side of the shell structure (1), and a conical mirror structure (3) is fixedly installed on the top of the shell structure (1). The housing structure (1) includes a housing (11), a circuit compartment (12) is provided on the inner side of the housing structure (1), a light source mounting compartment (13) is provided on the top of the circuit compartment (12) and inside the housing (11), a light-transmitting hole (16) is provided on the top of the light source mounting compartment (13) and inside the housing (11), three limiting screws (14) are movably installed on the outer side of the housing (11) and extend to the inner side of the light source mounting compartment (13), an insulating pad (15) is fixedly installed at the close end of the three limiting screws (14), an external threaded ring sleeve (17) is fixedly installed on the top of the housing (11), a sleeve (18) is movably installed on the outer side of the external threaded ring sleeve (17), and a compartment cover (131) is movably installed on the front of the housing (11). The light source structure (2) includes a carrier plate (21), two terminals (27) are fixedly installed inside the carrier plate (21), a heat sink (22) is fixedly installed on the top of the carrier plate (21), a side-emitting laser chip (23) is fixedly installed on the top of the heat sink (22), a prism (24) is fixedly installed on one side of the heat sink (22) and on the top of the carrier plate (21), a laser housing cover (25) is fixedly installed on the top of the carrier plate (21), and a light-transmitting lens (26) is fixedly installed inside the top wall of the laser housing cover (25). The conical mirror structure (3) includes a glass tube (31), and a reflective conical mirror (32) extending to the inside of the glass tube (31) is fixedly installed at the top of the glass tube (31).

2. A 360-degree laser module according to claim 1, characterized in that: The circuit compartment (12) and the light source mounting compartment (13) are partially connected. The bottom surface of the light source mounting compartment (13) is coated with a heat dissipation insulating layer. The light source mounting compartment (13) and the light-transmitting hole (16) are connected.

3. A 360-degree laser module according to claim 1, characterized in that: The sleeve (18) has an internal thread that matches the external threaded ring sleeve (17) on its inner side. The inside of the sleeve (18) and the top of the light-transmitting hole (16) is a through hole, and an optical lens (19) is fixedly installed in the through hole.

4. A 360-degree laser module according to claim 1, characterized in that: The three limiting screws (14) extend from the left, right and back of the housing (11) into the interior of the light source mounting chamber (13), respectively. The interior of the housing (11) is provided with threaded holes that are adapted to the corresponding limiting screws (14).

5. A 360-degree laser module according to claim 1, characterized in that: The housing (11) has an installation groove on the inside and on the front of the light source mounting compartment (13) that is compatible with the compartment cover (131). The housing (11) and the compartment cover (131) are connected by snap-fit.

6. A 360-degree laser module according to claim 1, characterized in that: The housing (11) has five through holes inside and outside the circuit compartment (12).

7. A 360-degree laser module according to claim 1, characterized in that: The top of the heat sink (22) is coated with a solder layer, the top surface of the solder layer is fixedly connected to the bottom surface of the edge-emitting laser chip (23), and gold wires (28) extending to the corresponding terminals (27) are respectively installed on the top surface of the edge-emitting laser chip (23) and the top surface of the solder layer.

8. A 360-degree laser module according to claim 1, characterized in that: The prism (24) is a right-angle prism, and the inclined surface of the prism (24) is located on one side of the side-emitting laser chip (23) and below the light-transmitting lens (26).

9. A 360-degree laser module according to claim 1, characterized in that: The bottom of the reflective cone (32), the optical lens (18), and the light-transmitting hole (16) are coaxial optical paths.

10. A 360-degree laser module according to claim 1, characterized in that: The top surface of the sleeve (18) is provided with a connecting groove that is compatible with the glass tube (31).

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