Miniature blue light-to-white light laser module

Abstract

The utility model relates to the technical field of laser modules, in particular to a miniature blue light-to-white light laser module, which comprises a short column shell, a laser tube with a collimating lens is arranged in the short column shell, an aspherical lens is arranged on the front surface of the laser tube of the collimating lens, a light diffusion sheet is arranged on the front surface of the aspherical lens, and a light source is arranged on the front surface of the light diffusion sheet. A front clamping body is arranged on the front face of the light diffusion sheet. According to the miniature laser module capable of converting blue light into white light, the aspherical lens is arranged, the focal length of first focusing is shortened through the ultra-small working distance of the aspherical lens, so that the ultra-short axial length is achieved, meanwhile, due to the fact that the aspherical lens is adopted, the laser module has the advantages of being free of aberration and quite precise in focus, the focus can be quite small, and the size of the laser module is small. Therefore, the purpose of high condensation focus is achieved, the module can realize the blue light power of 3-10 watts, and the size of the module can reach the miniature size of which the axial size is within 15mm and the radial diameter is within 10mm.

Description

Technical Field

[0001] The utility model relates to the technical field of laser modules, in particular to a miniature blue light-to-white light laser module. Background Art

[0002] A blue-to-white-light laser module is a device that converts the blue light generated by a blue laser into white light. Usually, the blue light emitted by a blue laser is converted by phosphor or fluorescent materials to generate light containing multiple wavelengths, thereby forming white light. This blue-to-white-light laser module usually includes a blue laser, phosphor or fluorescent materials, optical lenses, reflectors, optical filters and other components. The working principle of the blue-to-white-light laser module is to utilize the fluorescence effect of phosphor or fluorescent materials to convert the blue light emitted by a blue laser into light containing multiple wavelengths such as red, green, and blue, thereby forming white light. This white light can be used in lighting, display, projection and other fields.

[0003] Currently, in the long-distance lighting application of new energy vehicles, the structure of the headlights is smaller than that of conventional car lights, and the existing blue-light-to-white laser module has a fixed structure. The focusing method is to use an ordinary spherical mirror to focus. The focal length is long, resulting in a long overall axial length, making the external structure of the module large, with a minimum axial size of 20mm and a minimum radial size of 11 to 13mm. In addition, due to aberrations, the ordinary spherical mirror cannot achieve precise focus, so the focus is large, resulting in a large spot diameter, so that the minimum center spot of a single blue-to-white fluorescent film can only reach 0.3mm, which limits the application of the existing blue-light-to-white laser module and makes it impossible to use it. Therefore, a miniature blue-light-to-white laser module is needed to address this situation. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a miniature blue light-to-white light laser module, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a miniature blue light to white light laser module, comprising a short column shell, a laser tube with a collimating lens is arranged inside the short column shell, an aspheric lens is arranged on the front of the laser tube of the collimating lens, a light diffuser is arranged on the front of the aspheric lens, a front card body is arranged on the front of the light diffuser, a fluorescent sheet and an aperture are arranged on the front of the front card body, and a focusing lens is arranged on the surface of the fluorescent sheet and the aperture.

[0006] Optionally, mounting blocks are provided on both sides of the short column housing, and mounting holes are provided on surfaces of the mounting blocks.

[0007] Optionally, a circuit board runs through the back side of the laser tube of the collimating lens, and an anti-static tube is provided on the back side of the circuit board.

[0008] Optionally, a mounting groove for mounting the fluorescent sheet and the aperture is provided on the front side of the front card body.

[0009] Optionally, a light-transmitting hole for light to pass through is opened at the center of the front card body.

[0010] Optionally, a circumferential surface of the front card body is provided with threads, an inner side wall of the short column shell is provided with internal threads, and the front card body is installed inside the short column shell through the threads.

[0011] The utility model provides a miniature blue light-to-white light laser module, which has the following beneficial effects:

[0012] The miniature blue-light-to-white-light laser module adopts the setting of aspherical lens, and shortens the focal length of the first focus through its ultra-small working distance, thereby achieving an ultra-short axial length. At the same time, due to the use of aspherical mirrors, it has the advantages of no aberration and very precise focus, so the focus can be very small, thereby achieving the purpose of high focusing focus. The module can achieve a blue light power of 3 to 10 watts while the module size can reach a miniature size within the axial size of 15 mm and the radial diameter of 10 mm, and the light spot size of the light point can be adjusted upward from 0.1 mm, effectively meeting the current demand for small-sized laser modules for new energy vehicle lights, and facilitating the installation of the module through the setting of mounting blocks and mounting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] In the figure: 1. short column shell; 2. laser tube; 3. aspheric lens; 4. light diffuser; 5. front card body; 6. fluorescent sheet; 7. aperture; 8. focusing lens; 9. circuit board; 10. antistatic tube; 11. mounting block; 12. mounting hole; 13. mounting slot; 14. light transmission hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: a miniature blue light to white light laser module, comprising a short column shell 1, mounting blocks 11 are arranged on both sides of the short column shell 1, mounting holes 12 are opened on the surface of the mounting blocks 11, a laser tube 2 with a collimating lens is arranged inside the short column shell 1, a circuit board 9 is penetrated on the back of the laser tube 2 of the collimating lens, the circuit board 9 is connected to the base of the laser tube 2 by glue, two through holes on the circuit board 9 and the positive and negative electrode pins of the laser tube 2 are soldered together, an anti-static tube 10 is arranged on the back of the circuit board 9, the anti-static tube 10 adopts a Zener tube as an electrostatic protection device, an aspheric lens 3 is arranged on the front of the laser tube 2 of the collimating lens, a light diffuser 4 is arranged on the front of the aspheric lens 3, the light diffuser 4 is located on the back of the front card body 5 in the corresponding circular groove in the short column shell 1, and is pressed and fixed by the front card body 5;

[0020] A front card body 5 is provided on the front of the light diffuser 4, and a thread is provided on the circumferential surface of the front card body 5, and an internal thread is provided on the inner side wall of the short column shell 1. The front card body 5 is installed inside the short column shell 1 through the thread, and the internal thread engages with the thread to produce positioning and tightening for installation and fixation. A mounting groove 13 for installing a fluorescent sheet 6 and an aperture 7 is provided on the front of the front card body 5, and a light-transmitting hole 14 for light to pass through is opened at the center of the front card body 5. A fluorescent sheet 6 and an aperture 7 are provided on the front of the front card body 5, and the fluorescent sheet 6 is located in the corresponding mounting groove 13 on the front card body 5 and is fixed by heat-conducting silver glue, and the silver glue fills the gap formed by the contact part of the fluorescent sheet 6 and the front card body 5, and the aperture 7 is also located in the corresponding circular mounting groove 13 at the front end of the front card body 5. And fixed by adhesive material, a focusing lens 8 is arranged on the surface of the fluorescent sheet 6 and the aperture 7, and the focusing lens 8 is fixed on the front of the fluorescent sheet 6 and the aperture 7, covering the fluorescent sheet 6 and the aperture 7 and fixed by glue, and the setting of the aspherical lens 3 is adopted, and the focal length of the first focusing is shortened through its ultra-small working distance, so as to achieve an ultra-short axial length. At the same time, because of the use of the aspherical lens 3, it has the advantages of no aberration and very precise focus, so the focus can be very small, so as to achieve the purpose of high focusing focus, so that the module can achieve 3 to 10 watts of blue light power while the module size can reach a miniature size within 15mm in axial dimension and 10mm in radial diameter, and the light spot size of the light emitting point can be adjusted upward from 0.1mm.

[0021] In the utility model, the working steps of the device are as follows:

[0022] First, connect the circuit by soldering the positive and negative pins on the laser tube 2, and then install the module by passing the bolts through the mounting holes 12;

[0023] When in use, the laser tube 2 emits blue light, which passes through the aspherical lens 3, the light diffuser 4, the light-transmitting hole 14 on the front card body 5, the fluorescent sheet 6, the aperture 7 and the focusing lens 7 in sequence, and is finally converted into white light and emitted.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A miniature blue light-to-white light laser module, comprising a short column housing (1), characterized in that: A laser tube (2) with a collimating lens is arranged inside the short column housing (1); an aspheric lens (3) is arranged on the front of the laser tube (2) with the collimating lens; a light diffuser (4) is arranged on the front of the aspheric lens (3); a front card body (5) is arranged on the front of the light diffuser (4); a fluorescent sheet (6) and an aperture (7) are arranged on the front of the front card body (5); and focusing lenses (8) are arranged on the surfaces of the fluorescent sheet (6) and the aperture (7).

2. The micro blue light-to-white light laser module according to claim 1, characterized in that: Mounting blocks (11) are provided on both sides of the short column housing (1), and mounting holes (12) are provided on the surfaces of the mounting blocks (11).

3. The micro blue light-to-white light laser module according to claim 1, characterized in that: A circuit board (9) penetrates the back of the laser tube (2) of the collimating lens, and an antistatic tube (10) is provided on the back of the circuit board (9).

4. The micro blue-light-to-white-light laser module according to claim 1, characterized in that: The front surface of the front card body (5) is provided with a mounting groove (13) for mounting the fluorescent sheet (6) and the diaphragm (7).

5. The micro blue light-to-white light laser module according to claim 1, characterized in that: A light-transmitting hole (14) for light to pass through is provided at the center of the front card body (5).

6. The micro blue light-to-white light laser module according to claim 1, characterized in that: The circumferential surface of the front card body (5) is provided with threads, the inner side wall of the short column housing (1) is provided with internal threads, and the front card body (5) is installed inside the short column housing (1) via the threads.

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