A pump laser emitter, laser line and laser machine

Abstract

The application provides a pump laser emitter, a laser line and a laser machine, and particularly relates to the technical field of laser machines, which comprises a sealed shell; further comprises a pump laser module arranged in the sealed shell; the pump laser module is composed of a laser generation assembly, a laser transmission assembly, a light beam adjusting assembly, an objective lens, an imaging transmission module and a light transmission hole structure; the pump laser emitter, the laser line and the laser machine adopt the combined mode of "instant high-voltage triggering pump lamp and precise shutoff of main capacitor by MOSFET tube", abandon the traditional long-term preheating mode of xenon lamp, and only activate the pump lamp for a short time when laser is needed, and meanwhile, the MOSFET tube is used to avoid the complete release of the energy of the main capacitor, so that the invalid energy consumption and the equipment heating are greatly reduced, the stable work can be realized without a complex water cooling system, and the core problems of the traditional laser machine, such as "time-consuming preheating, energy waste and serious heating", are fundamentally solved.

Description

Technical Field

[0001] This invention provides a pumped laser emitter, a laser circuit, and a laser machine, specifically relating to the field of laser machine technology. Background Technology

[0002] In the field of electronic product LCD screen repair, especially in mobile phone screen repair, lasers are widely used for repair. Laser repair, with its non-contact and high-precision processing characteristics, can accurately target the repair area (such as repairing ribbon cable solder joints and removing local defects), avoiding secondary damage. At the same time, it can replace the entire screen with partial repair, significantly reducing repair costs. It can also adapt to the fine requirements of screens of different sizes, improve repair yield and efficiency, reduce electronic waste, and has both economic value and environmental significance. It is the core technology direction of precision repair of mobile phone screens.

[0003] The existing pump laser emitter and its associated circuitry of laser machines have the following defects:

[0004] As shown in the attached diagram in the instruction manual ( Figures 10 to 11 The "prior art pumped laser machine" shown in the figure is a well-known HOYA brand product; it mainly includes: D1, pumped laser machine body; D3, laser emission structure; D11, worktable; D12, machine head; D13, display;

[0005] Specifically: the pump source of this pumped laser machine is mostly a xenon lamp, which requires long-term preheating, has insufficient energy utilization, and generates significant heat, thus requiring a complex water-cooling system (as shown in the instruction manual). Figure 11 As shown, the water-cooling inlet is located on the back of the laser emitting structure; this method has the risk of water leakage and short circuit, and the lifespan of the xenon lamp is also greatly shortened due to continuous wear and tear.

[0006] In terms of energy control, existing pumped laser machines have high driving circuit voltages, and use thyristors for discharge switches (which require the capacitor energy to be discharged, resulting in significant waste) or high-cost IGBTs (which have slow turn-off). At the same time, the Q-switching circuit uses the "inductor boost + avalanche diode" scheme, which leads to a large overall size and poor stability of the equipment.

[0007] Therefore, this invention proposes a pumped laser emitter, laser circuit, and laser machine to overcome the shortcomings of the prior art. Summary of the Invention

[0008] In view of the deficiencies of the existing technology, the present invention provides a pumped laser emitter, laser circuit and laser machine, which can effectively solve the related technical problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] This invention discloses a pumped laser emitter, laser circuit, and laser machine, including a sealed housing; it also includes a pumped laser module disposed inside the sealed housing; the pumped laser module consists of a laser generating component, a laser transmission component, a beam adjustment component, an objective lens, an imaging transmission module, and a light-transmitting aperture structure; wherein, the objective lens is fixedly installed on the bottom of one side of the sealed housing and located below the laser transmission component; the imaging transmission module is fixedly disposed on the other side of the bottom of the sealed housing and communicates with the interior of the sealed housing; the beam adjustment component is located between the laser generating component and the laser transmission component and is used to adjust the laser spot size; the laser generating component includes a laser Q-switcher and a laser generator, the laser Q-switcher being a structure based on an ultra-high-speed MOS transistor and an iron powder microcrystalline magnetic ring; the laser generator consists of beam inlet and outlet ends at both ends, a pump lamp tube installed inside it, a rod-shaped light guide with a frosted surface, and a low-voltage, high-capacity main capacitor; the pump lamp tube is equipped with instantaneous high-voltage... A high-voltage pulse triggering structure is used to generate the initial electric arc. The laser generator is also equipped with a voltage-resistant MOSFET as a discharge control switch. The laser transmission component also includes a specific wavelength filter to filter out invalid stray light. The laser generation component generates and emits a laser beam. The instantaneous high-voltage pulse triggering structure applies an instantaneous high-voltage pulse to the pump lamp to generate the initial electric arc. The low-voltage, high-capacity main capacitor discharges rapidly during the arc's duration, exciting the pump lamp to generate a laser beam. The beam is axially oriented by a rod-shaped light guide with a frosted surface and then passes through the filter and the light-transmitting aperture structure in sequence. A portion of the beam enters the objective lens through the first laser path formed by the laser transmission component and the light-transmitting aperture structure and projects the laser onto the product surface through the objective lens. Another portion of the beam enters the imaging transmission module for imaging through the second laser path formed by the laser transmission component. The MOSFET turns off when the laser intensity reaches the required value, stopping the main capacitor from continuing to discharge.

[0011] Compared with the known prior art, the technical solution provided by this invention has the following beneficial effects:

[0012] The pumped laser emitter, laser circuit, and laser machine use a combination of "instantaneous high voltage triggering of the pump lamp and precise shutdown of the main capacitor by the MOSFET" to abandon the traditional long-term preheating method of xenon lamps and only briefly activate the pump lamp when laser is needed.

[0013] At the same time, the use of MOSFETs avoids the complete release of energy from the main capacitor, greatly reducing ineffective energy consumption and equipment heat generation. It can work stably without a complex water cooling system, fundamentally solving the core problems of traditional laser machines such as "time-consuming preheating, energy waste, and severe heat generation".

[0014] It adopts a Q-switching structure with low-voltage main capacitor, miniaturized MOSFET and ultra-high-speed MOSFET, and iron powder microcrystalline magnetic ring, which is more compact than traditional laser machines;

[0015] By using dual motors and a bidirectional swing shutter, the length and width of the light spot can be adjusted independently. Combined with a flower-shaped light transmission adjustment hole, light spot distortion is avoided, which solves the problem of low efficiency of manual adjustment in existing technologies and meets the fine processing requirements of mobile phone screens such as "narrow bezels" and "micro solder joints". Attached Figure Description

[0016] Figure 1 This is a front-view perspective view of the present invention.

[0017] Figure 2 This is a partial three-dimensional structural diagram of relevant components inside the machine head in this invention;

[0018] Figure 3 This is a partial three-dimensional structural diagram of relevant components inside the sealed housing in this invention;

[0019] Figure 4 This is a partial three-dimensional structural diagram of the relevant components of the laser generating component and the laser transmission component in this invention;

[0020] Figure 5 This is a front view structural diagram of the relevant components at the laser generating component and laser transmission component in this invention;

[0021] Figure 6 This is a partial bottom-view three-dimensional structural diagram of the laser generating component and the laser transmission component in this invention;

[0022] Figure 7 This is a partial three-dimensional structural diagram of the relevant components at the beam adjustment assembly in this invention;

[0023] Figure 8 This is a partial bottom-view three-dimensional structural diagram of the relevant components at the beam adjustment assembly in this invention;

[0024] Figure 9 This is a partially exploded three-dimensional structural diagram of the relevant components at the beam adjustment assembly in this invention;

[0025] Figure 10 This is a three-dimensional structural diagram of a pumped laser machine in the prior art;

[0026] Figure 11 This is a three-dimensional structural diagram of the relevant components of the laser emission structure in a pumped laser machine in the prior art;

[0027] Figure 12 This is a schematic diagram of another three-dimensional structure of the laser emission structure and related components in a pumped laser machine in the prior art.

[0028] The labels in the diagram represent:

[0029] 1. Laser machine body; 11. Worktable; 12. Machine head; 13. External monitor;

[0030] 2. Sealed housing;

[0031] 3. Pumped laser module;

[0032] 31. Laser generating assembly; 311. Laser Q-switcher; 312. Second reflecting mirror; 313. Polarizing mirror; 314. Laser generator;

[0033] 32. Laser transmission component; 321. Light transmission aperture; 322. First reflecting mirror; 323. First oblique semi-reflecting mirror; 324. Second oblique semi-reflecting mirror; 325. Polarizing mirror;

[0034] 33. Beam adjustment assembly; 331. Positioning plate; 332. Limiting partition; 333. Drive motor; 334. Eccentric drive wheel; 335. First moving part; 336. Second moving part; 337. Bidirectional swinging part;

[0035] 4. Objective lens. Detailed Implementation

[0036] The present invention will be further described below with reference to embodiments.

[0037] Example 1:

[0038] like Figures 1 to 6 As shown, a pumped laser emitter and laser circuitry include a sealed housing 2;

[0039] It also includes a pump laser module 3 disposed inside the sealed housing 2;

[0040] The pumped laser module 3 consists of a laser generating component 31, a laser transmission component 32, a beam adjustment component 33, an objective lens 4, an imaging transmission module 5, and a light-transmitting aperture structure.

[0041] The objective lens 4 is fixedly installed on the bottom side of the sealed housing 2 and located below the laser transmission assembly 32; the imaging transmission module 5 is fixedly installed on the other side of the bottom of the sealed housing 2 and communicates with the inside of the sealed housing 2.

[0042] The beam adjustment component 33 is located between the laser generating component 31 and the laser transmission component 32, and is used to adjust the laser spot size. The laser generating component 31 includes a laser Q-switcher 311 and a laser generator 314. The laser Q-switcher 311 is a structure based on an ultra-high-speed MOS transistor and an iron powder microcrystalline magnetic ring.

[0043] Among them, the laser Q-switcher 311 can store a portion of light after it is injected, and when a high voltage is applied instantaneously to its two ends, its properties change, and the light can be released.

[0044] The laser generator 314 consists of beam inlet and outlet ends at both ends, pump lamps installed inside, a rod-shaped light guide with a frosted surface, and a low-voltage, high-capacity main capacitor. Note: The operating voltage is approximately 600V.

[0045] The pump lamp inside the laser generator 314 is a xenon lamp. A rod-shaped light guide is positioned close to the xenon lamp, with a distance of approximately 1 mm between them. Both are encased in a reflective layer made of reflective material, such as a bright metal layer or white ceramic. This layer serves two purposes: when the xenon lamp emits an electric arc, the reflective properties of the bright metal or white ceramic cause the light to be reflected multiple times within the reflective layer, resulting in multiple reflections and refractions by the rod-shaped light guide, allowing the light to exit axially from both ends of the rod. Simultaneously, the wavelength of the light emitted by the xenon lamp is also 1050 nm. There is no clear boundary between the two wavelengths. The light emitted after passing through the laser Q-switcher 311 carries not only the 1050 nm wavelength light but also other wavelengths.

[0046] The pump lamp is equipped with an instantaneous high-voltage pulse triggering structure. When in use, current flows through the inside of the "xenon lamp" to generate an initial electric arc, which is similar to the electric ignition principle of existing lighters.

[0047] The following comparison uses existing pumped laser machines as an example:

[0048] As shown in the attached diagram in the instruction manual ( Figures 10 to 11 The "prior art pumped laser machine" shown in the figure mainly includes: D1, pumped laser machine body; D3, laser emitting structure; D11, worktable; D12, machine head; D13, display;

[0049] Firstly, the existing technology uses the outdated Q-switching structure of "inductor coil secondary boost + avalanche diode", which results in a large Q-switching structure with poor stability and a flat pulse rise edge.

[0050] The pump laser in this embodiment uses a combination of ultra-high-speed MOS transistors and iron powder microcrystalline magnetic rings, which can avoid the above-mentioned defects and improve the stability and response speed of the Q-switched pulses.

[0051] Furthermore, the instantaneous high-voltage pulse triggering structure in this embodiment is superior to the prior art. It includes a high-voltage pulse generator and a trigger capacitor, and can output an instantaneous high voltage of about 8000V. It only works when laser emission is required and does not require long-term preheating like xenon lamps in the prior art.

[0052] It also includes other detailed structures, but these are only used for comparison in this embodiment and will not be described in detail.

[0053] The laser generator 314 is also equipped with a voltage-resistant MOSFET as a discharge control switch. The voltage range of the MOSFET is 700-850V.

[0054] It is worth noting that this MOSFET is electrically connected to the main control circuit and can receive precise turn-off signals, thus solving the problem of energy waste caused by the inability of traditional thyristors to turn off midway.

[0055] In existing technologies, pumped laser machines mostly use thyristors (which maintain a continuous circuit when the current is non-zero, and require the capacitor energy to be discharged before being turned off, with only 5% of the energy being usable) or IGBTs (which can be turned off, but are extremely expensive and have a slow turn-off speed, and still have significant energy loss).

[0056] The MOSFET in this embodiment can be turned off immediately when the laser intensity reaches the required value, stopping the main capacitor from continuing to discharge, avoiding unnecessary energy loss, and at the same time, the cost is lower than that of IGBT.

[0057] The laser transmission component 32 also includes a filter lens of a specific wavelength, preferably a 1050nm infrared laser filter lens, for filtering out invalid stray light;

[0058] Compared with the stray light interference caused by the lack of a dedicated filter structure in the existing technology, this filter can filter out the invalid components such as visible light and ultraviolet light in the broadband white light generated by the pump lamp, and only allow the target wavelength laser to pass through.

[0059] A laser beam is generated and emitted by the laser generating component 31; the instantaneous high voltage pulse triggering structure applies an instantaneous high voltage pulse to the pump lamp to generate an initial electric arc, and the low voltage large capacity main capacitor discharges rapidly during the electric arc, exciting the pump lamp to generate a laser beam.

[0060] It is worth noting that during this process, the discharge time of the main capacitor is strictly controlled within the millisecond window before the arc is extinguished, thus avoiding the high power consumption problem of continuous discharge in traditional equipment.

[0061] In the existing technology, the capacitor discharge of the pump laser machine needs to continue until the voltage drops to the "lowest lamp lighting voltage" (such as 200V), and a lot of energy is wasted and converted into heat;

[0062] The precise discharge control in this embodiment can significantly reduce ineffective heat generation and lower heat dissipation requirements.

[0063] After the light beam is axially oriented by the frosted rod-shaped light guide, it passes through the filter lens and the light-transmitting hole structure in sequence.

[0064] The surface frosting treatment allows the rod-shaped light guide to redirect the chaotic light beam into axial propagation through diffuse reflection, solving the energy loss problem caused by the disorder of the optical path in the existing technology.

[0065] Part of the beam enters the objective lens 4 through the first laser line formed by the laser transmission component 32 and the light-transmitting hole structure, and projects the laser onto the product surface through the objective lens 4; another part of the beam enters the imaging transmission module 5 through the second laser line formed by the laser transmission component 32 for imaging; the MOSFET turns off when the laser intensity reaches the required value, stopping the main capacitor from continuing to discharge.

[0066] This method significantly improves energy efficiency compared to existing technologies and greatly reduces ineffective heat generation.

[0067] Specific implementation:

[0068] The laser generating assembly 31 also includes a second reflecting mirror 312, a polarizing mirror 313, and a laser generator 314. The laser Q-switcher 311 is fixedly installed inside one end of the sealed housing 2, and the second reflecting mirror 312 is fixedly installed inside the sealed housing 2 and located on the side close to the laser Q-switcher 311.

[0069] The specific configuration is as follows: the second reflecting mirror 312 is a total reflection mirror, which can reflect laser energy back to the resonant cavity, reduce energy loss, and solve the problem of energy attenuation caused by the long optical path in the existing technology;

[0070] To reduce the size of the device, existing technologies often use multiple mirrors to bend the light path. Each additional mirror results in an energy loss, and the longer the light path, the more prone it is to vibration and deviation.

[0071] The total reflection mirror in this embodiment can reduce the number of reflections, reduce energy superposition loss, and simplify the optical path structure.

[0072] The polarizing lens 313 is fixedly installed inside the sealed housing 2 and located on the side of the second reflecting lens 312 away from the laser Q-switcher 311. The laser generator 314 is fixedly installed inside the sealed housing 2 and located on the side of the polarizing lens 313 away from the second reflecting lens 312.

[0073] The laser Q-switcher 311, the second reflecting mirror 312, the polarizing mirror 313, and the beam inlet and outlet are all located on the same horizontal axis.

[0074] This coaxial design ensures optical path alignment accuracy and avoids the poor stability problem caused by multiple mirrors bending the optical path in existing technologies.

[0075] The laser transmission assembly 32 includes a light-transmitting hole 321, a first reflecting mirror 322, a first oblique semi-reflecting mirror 323, and a second oblique semi-reflecting mirror 324. The light-transmitting hole 321 is opened in the sealed housing 2 and is located on the side close to the beam inlet and outlet end of the laser generator 314, and is on the same axis as the beam inlet end, so that the beam can pass through.

[0076] Among them, the filter lens with a specific wavelength, note: 1050nm infrared laser filter lens, is set between the light-transmitting hole 321 and the first reflective lens 322, and is coaxial with the light-transmitting hole 321 and the first reflective lens 322. It can filter stray light before the beam enters the transmission path and prevent invalid light from entering subsequent optical components and causing interference. Specifically, it makes visible light blocked by the filter lens, and allows the 1050nm wavelength infrared pulse laser to pass through the filter lens.

[0077] A beam transmission space is provided on one side inside the sealed housing 2. The first reflecting mirror 322 is fixedly installed above the beam transmission space, and the horizontal axis of the mirror surface of the first reflecting mirror 322 is collinear with the horizontal axis of the light transmission hole 321. The first oblique semi-reflecting mirror 323 and the second oblique semi-reflecting mirror 324 are fixedly installed in the beam transmission space and located directly below the first reflecting mirror 322. The first oblique semi-reflecting mirror 323 and the second oblique semi-reflecting mirror 324 are inclined towards each other. Among them, the first oblique semi-reflecting mirror 323 is located directly above the objective lens 4.

[0078] Furthermore, the first oblique semi-reflective mirror 323 and the second oblique semi-reflective mirror 324 are each tilted towards each other at an angle of 45°;

[0079] Compared to existing technologies that use multiple reflections in the optical path, this angle design significantly shortens the optical path and improves system stability.

[0080] Furthermore, a polarizing lens 325 is also fixedly installed in the beam transmission space on the side of the first oblique half-reflecting lens 323 away from the second oblique half-reflecting lens 324, for polarizing the first oblique half-reflecting lens 323.

[0081] It can further filter out unpolarized stray light, ensuring that the laser entering the objective lens 4 has a consistent polarization direction, thus improving processing accuracy.

[0082] When in use: When the pumped laser emitter and laser circuit are put into use (such as in mobile phone screen repair scenarios), the equipment does not need to be preheated after being powered on and can directly enter the standby state.

[0083] When laser emission is required, the main control circuit sends a signal to the instantaneous high-voltage pulse triggering structure of the laser generating component 31. This structure quickly generates an instantaneous high voltage to form an initial electric arc in the pump lamp. At the same time, the main control circuit controls the low-voltage, large-capacity main capacitor in the laser generator 314 to discharge along the arc channel, exciting the pump lamp to generate a broadband beam.

[0084] The beam generated by the pump lamp first enters the rod-shaped light guide with a frosted surface. After being regulated into an axially propagating beam by the light guide, it passes through the light-transmitting hole structure and the filter lens of a specific wavelength in sequence, filtering out invalid stray light and retaining only the target wavelength laser.

[0085] The beam then enters the beam adjustment component 33, where the size of the light transmission adjustment hole is adjusted by the shutter structure to match the required laser spot size. The adjusted beam then enters the laser transmission component 32: part of the beam is transmitted to the objective lens 4 via the first laser line, and after focusing, it is directed onto the product surface to complete the processing; the other part of the beam is transmitted to the imaging transmission module 5 via the second laser line, and is converted into a real-time imaging signal for display by external devices to assist operators in positioning.

[0086] During this process, the laser Q-switcher 311 performs Q-switching on the beam to generate high peak power pulsed laser. Simultaneously, the main control circuit monitors the beam intensity in real time. When the intensity reaches the processing requirements, it immediately controls the MOSFET to turn off, stopping the main capacitor discharge and preventing redundant energy release. After a single processing cycle, the instantaneous high-voltage trigger structure stops working, the pump lamp returns to its non-lit state, the main capacitor is recharged to its operating voltage, and the system waits for the next trigger signal, returning to a standby state.

[0087] Example 2:

[0088] Based on the above embodiment one, another implementation method is proposed, the specific improvement being: the first reflecting mirror 322 in the laser transmission component 32 is configured from the original total reflection mirror to a semi-transparent and semi-reflective mirror (the transmission-reflection ratio is preferably 40% transmission and 60% reflection, which can be adaptively adjusted according to the laser processing energy requirements and imaging clarity requirements), and the structure, connection relationship and basic parameters of the other components, such as the wavelength of the filter lens, the withstand voltage range of the MOSFET, the working voltage of the main capacitor, etc., remain consistent with embodiment one.

[0089] Specific configuration logic and working compatibility description: The semi-transparent and semi-reflective mirror is fixedly installed above the beam transmission space. Its horizontal axis is still collinear with the horizontal axis of the light-transmitting hole 321, ensuring that the target wavelength laser emitted from the light-transmitting hole 321 and filtered by the filter lens can be accurately incident on the surface of the semi-transparent and semi-reflective mirror.

[0090] During operation, the incident laser is "splittered" through a semi-transparent and semi-reflective mirror: part of the laser energy is reflected and directed along the original first laser path to the first oblique semi-reflective mirror 323, and finally focused onto the product surface by the objective lens 4 to meet the energy intensity required for processing; the remaining laser energy is transmitted and directed directly to the second oblique semi-reflective mirror 324, and enters the subsequent steps.

[0091] This embodiment replaces the original total reflection mirror with a single semi-transparent semi-reflective mirror. While retaining the core advantages of "no preheating and high energy utilization" in Embodiment 1, it further simplifies the optical path structure of the laser transmission component 32, reduces the number of mirrors, reduces energy attenuation caused by reflection from multiple mirrors, and avoids the "alignment deviation" problem that is prone to occur in traditional multi-mirror optical paths, thereby improving the stability of the system in long-term operation.

[0092] The following comparison with existing pumped laser machines further illustrates this point: Figures 10 to 12 As shown, D3 is a laser emission structure; its laser splitting usually needs to be achieved through a combination of "multiple total reflection mirrors + half reflection mirrors", which easily leads to a long optical path and superimposed energy loss. Each additional mirror increases the laser energy loss.

[0093] Improvements compared to existing technologies: ① Replacing the existing multi-lens combination with a single semi-transparent semi-reflective mirror to achieve path splitting, reducing the number of lenses used and avoiding energy loss caused by multiple lens stacking from the source; ② Simplifying the optical path design, shortening the optical path length, reducing vibration interference on the optical path, improving the stability of the optical path during long-term operation, and avoiding the impact of optical path deviation on processing accuracy; ③ Eliminating the precision calibration process of multiple lenses, simplifying the assembly process, while reducing the space occupied by lenses and shrinking the overall size of the laser transmission component; ④ Only the transmission and reflection parameters of a single semi-transparent semi-reflective mirror need to be adjusted to adapt to different processing scenario requirements, without the need to replace the multi-lens combination, greatly accelerating the scene adaptation speed and improving the flexibility of equipment use.

[0094] Example 3:

[0095] like Figures 7 to 9 As shown, the above-mentioned pumped laser emitter and laser circuit also include a beam adjustment component 33, which includes a positioning plate 331, a limiting partition 332, a drive motor 333, and an eccentric drive wheel 334. The positioning plate 331 is installed in the beam transmission space inside the sealed housing 2 by bolt threads, and the positioning plate 331 is located between the bottom of the first reflecting mirror 322 and the top of the first oblique half-reflecting mirror 323.

[0096] The positioning plate 331 is made of aluminum alloy and the surface is anodized. This reduces the reflection loss of the laser on its surface and improves the heat dissipation performance, preventing the local temperature from becoming too high due to long-term irradiation of the beam, which could affect the stability of the component.

[0097] The light-transmitting hole structure is configured as follows: a light-transmitting circular hole is opened on the surface of the positioning plate 331, and a flower-shaped light-transmitting adjustment hole is opened on the surface of the first reflecting lens 322; the two are corresponding to each other to ensure that the light beam passes through accurately.

[0098] Its function is that the flower-shaped light-transmitting adjustment hole has a smooth arc transition design at the edge. Compared with the rectangular or circular adjustment holes commonly used in existing technologies, it can avoid the problem of light spot edge distortion caused by "uneven corner occlusion" when adjusting the light spot size, ensuring that the output laser spot outline is regular and meeting the processing needs of fine areas such as "narrow edge gaps" and "micro solder joints" in mobile phone screen repair.

[0099] The limiting partition 332 is fixedly embedded in the bottom of the positioning plate 331, and its upper and lower surfaces are respectively provided with two sets of guide grooves. The two sets of guide grooves correspond to the length and width directions of the limiting partition 332, and each set of guide grooves consists of at least two horizontal limiting grooves.

[0100] There are two drive motors 333, which are fixedly installed at the bottom of the sealed housing 2 and located on both sides of the bottom of the limiting partition 332; the top output shaft ends of the two drive motors 333 are respectively eccentrically connected to eccentric drive wheels 334.

[0101] Specifically, both drive motors 333 are electrically connected to the main control circuit. The main control circuit can output pulse signals to control the rotation angle and speed of the drive motors 333 according to the required spot size for laser processing (such as the size requirements of different repair areas on a mobile phone screen). For example, when processing narrow gaps, the control motor drives the eccentric wheel to push the shutter structure to reduce the length of the light-transmitting hole, and when processing wide surfaces, it increases the length, achieving independent adjustment of the length and width dimensions. In the existing technology, laser spot adjustment often adopts the scheme of "manual knob adjustment of the light shield" or "single motor control of a single dimension". Manual adjustment is inefficient and has poor precision. The single motor scheme cannot achieve independent adjustment of length and width, and it is difficult to adapt to processing areas of different shapes.

[0102] The limiting partition 332 is provided with shutter structures on both the upper and lower sides. That is to say, the shutter structures are located on the upper and lower sides of the light transmission adjustment hole; and the two shutter structures are in opposite directions, corresponding to the length and width directions of the limiting partition 332 respectively.

[0103] The function is that the layout of the shutter structure on the upper and lower sides can ensure "two-way symmetrical blocking" of the light transmission adjustment hole, avoid the shift of the center of gravity of the light spot caused by unilateral blocking, and further improve the uniformity of the light spot.

[0104] The eccentric drive wheel 334 is driven to rotate by the drive motor 333, which forms a contacting engagement with the shutter structure to adjust the length and width of the light transmission adjustment hole, thereby achieving laser spot size adjustment.

[0105] Specifically, the shutter structure includes a first moving part 335, a second moving part 336, and a bidirectional swinging part 337. The first moving part 335 and the second moving part 336 are respectively slidably connected in the corresponding horizontal limiting grooves, and a return spring is connected between the sliding part of the two and the horizontal limiting groove.

[0106] The bidirectional swing member 337 is rotatably disposed on one side of the limiting partition 332, and a torsion spring reset structure is connected to its rotating part for automatic reset after the bidirectional swing member 337 is rotated by force.

[0107] Specifically, the torsion spring reset structure is composed of a torsion spring wound around the bidirectional swing member 337.

[0108] The two ends of the bidirectional swing member 337 respectively abut against the ends of the first moving member 335 and the second moving member 336 located on the same side.

[0109] The first moving member 335 and the second moving member 336 are both composed of an arrow plate in the middle and a shielding plate disposed on one side of the two arrow plates close to each other; the bottom of the arrow plate slides in the horizontal limiting groove through a slider adapted to the horizontal limiting groove; the shielding plates are respectively located on both sides of the light-transmitting adjustment hole and are tightly attached to the outer surface of the limiting partition 332; the tip of the arrow plate abuts against the two ends of the bidirectional swing member 337; a lever plate is also provided on the side of the arrow plate of the first moving member 335 away from the second moving member 336, and the lever plates on the upper and lower first moving members 335 abut against the outer peripheral surface of the corresponding eccentric drive wheel 334;

[0110] The lever arm plate has an arc-shaped contact surface at the end away from the arrow plate, which fits against the outer circumferential surface of the eccentric drive wheel 334. This reduces wear when the two are in contact and ensures that the eccentric drive wheel 334 can stably push the lever arm plate when it rotates.

[0111] The shielding plate is made of blackened stainless steel, which has a high light-blocking rate and can prevent the laser from leaking from the gap between the shielding plate and the limiting partition 332, thus preventing the leaked laser from affecting the laser quality.

[0112] In use: When performing laser processing (such as mobile phone screen repair), the main optical control circuit outputs control signals to the two drive motors 333 according to the processing area requirements; the drive motors 333 drive the eccentric drive wheel 334 to rotate, pushing the first moving part 335 to slide along the horizontal limit groove.

[0113] When the first moving part 335 slides, it is linked to the rotation of the bidirectional swinging part 337, which in turn pushes the second moving part 336 to slide in the opposite direction, so that the shielding plates of the two parts can jointly adjust the length / width of the light transmission adjustment hole and precisely adjust the laser spot to the required size.

[0114] Once the laser spot meets the target, the main control circuit stops outputting signals, and the reset spring and torsion spring reset structure drive each component back to its initial position, preparing for the next adjustment. During this process, the positioning plate 331 reduces laser reflection loss and dissipates heat, while the shielding plate blocks laser leakage, ensuring processing energy and imaging quality.

[0115] Example 4:

[0116] The aforementioned laser machine employing a pumped laser emitter and laser circuitry includes a laser machine body 1, a worktable 11 on the laser machine body 1, a product loading platform on the worktable 11, and an X / Y / Z axis adjustment mechanism at the bottom of the product loading platform for adjusting the alignment relationship between the product and the objective lens 4. A machine head 12 is also located on the top of the laser machine body 1, and the aforementioned sealed housing 2 and pumped laser module 3 are both housed within the machine head 12. An external display 13 is also installed on one side of the laser machine body 1, and the external display 13 is electrically connected to the imaging transmission module 5 to transmit the image and display it on the external display 13.

[0117] Furthermore, a wind-cooled heat dissipation channel can be provided inside the head 12, which is in close contact with the outer wall of the sealed housing 2; since the pump laser module 3 in this solution has significantly reduced heat generation through "precise energy control of MOSFET", stable heat dissipation can be achieved in conjunction with the wind-cooled heat dissipation channel;

[0118] The following comparison uses existing pumped laser machines as an example:

[0119] However, existing laser machine heads generate significant heat and must be equipped with water-cooling pipes, such as... Figure 11 As shown, D3 and the two water-cooling inlets on the back of the laser emitting structure not only increase the size of the head (the head size of this solution is significantly smaller than that of the existing technology), but also pose a risk of water leakage in the water-cooling pipes leading to short circuits.

[0120] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pumped laser emitter and a laser circuit, characterized in that, Including the sealed housing (2); It also includes a pumped laser module (3) disposed inside the sealed housing (2); The pumped laser module (3) consists of a laser generating component (31), a laser transmission component (32), a beam adjustment component (33), an objective lens (4), an imaging transmission module (5), and a light-transmitting aperture structure; Among them, the objective lens (4) is fixedly installed on the bottom side of the sealed housing (2) and located below the laser transmission assembly (32); the imaging transmission module (5) is fixedly installed on the other side of the bottom of the sealed housing (2) and communicates with the inside of the sealed housing (2); The beam adjustment component (33) is located between the laser generating component (31) and the laser transmission component (32) and is used to adjust the laser spot size; The laser generating assembly (31) includes a laser Q-switcher (311) and a laser generator (314). The laser Q-switcher (311) is based on an ultra-high-speed MOS transistor and an iron powder microcrystalline magnetic ring. The laser generator (314) consists of beam inlet and outlet ends at both ends, pump lamps installed inside, rod-shaped light guides with frosted surfaces, and low-voltage, high-capacity main capacitors. The pump lamp is equipped with an instantaneous high-voltage pulse triggering structure to generate an initial electric arc, and the laser generator (314) is also equipped with a voltage-resistant MOSFET as a discharge control switch; The laser transmission assembly (32) also includes a filter lens of a specific wavelength for filtering out unwanted stray light; A laser beam is generated and emitted by the laser generating component (31); the instantaneous high voltage pulse triggering structure applies an instantaneous high voltage pulse to the pump lamp to generate an initial electric arc, and the low voltage large capacity main capacitor discharges rapidly during the electric arc to excite the pump lamp to generate a beam. After the beam is axially regulated by the rod-shaped light guide with a frosted surface, it passes through the filter lens and the light-transmitting hole structure in sequence. A portion of the beam enters the objective lens (4) through the first laser line formed by the laser transmission component (32) and the light-transmitting hole structure, and the laser is projected onto the product surface through the objective lens (4); another portion of the beam enters the imaging transmission module (5) through the second laser line formed by the laser transmission component (32) for imaging; the MOSFET is turned off when the laser intensity reaches the required value, stopping the main capacitor from continuing to discharge.

2. The pumped laser emitter and laser circuit according to claim 1, characterized in that, The laser generating assembly (31) also includes a second reflecting mirror (312) and a polarizing mirror (313). The laser Q-switcher (311) is fixedly installed at one end inside the sealed housing (2). The second reflecting mirror (312) is fixedly installed inside the sealed housing (2) and located on the side close to the laser Q-switcher (311). The polarizing mirror (313) is fixedly installed inside the sealed housing (2) and located on the side of the second reflecting mirror (312) away from the laser Q-switcher (311). The laser generator (314) is fixedly installed inside the sealed housing (2) and located on the side of the polarizing mirror (313) away from the second reflecting mirror (312). The laser Q-switcher (311), the second reflecting mirror (312), the polarizing mirror (313), and the beam inlet and outlet are all located on the same horizontal axis.

3. The pumped laser emitter and laser circuit according to claim 1, characterized in that, The laser transmission assembly (32) includes a light-transmitting hole (321), a first reflecting mirror (322), a first oblique semi-reflecting mirror (323), and a second oblique semi-reflecting mirror (324). The light-transmitting hole (321) is opened in the sealed housing (2) and is located on the side close to the beam inlet and outlet end of the laser generator (314), and is on the same axis as the beam inlet end, so that the beam can pass through. A filter with a specific wavelength is disposed between the light-transmitting hole (321) and the first reflective lens (322), and is coaxial with the light-transmitting hole (321) and the first reflective lens (322); A beam transmission space is provided on one side inside the sealed housing (2). The first reflecting mirror (322) is fixedly installed above the beam transmission space, and the horizontal axis of the mirror surface of the first reflecting mirror (322) is collinear with the horizontal axis of the light-transmitting hole (321). The first oblique semi-reflecting mirror (323) and the second oblique semi-reflecting mirror (324) are fixedly installed in the beam transmission space and located directly below the first reflecting mirror (322); the first oblique semi-reflecting mirror (323) and the second oblique semi-reflecting mirror (324) are arranged at an angle towards each other; The first oblique semi-reflective lens (323) is located directly above the objective lens (4).

4. The pumped laser emitter and laser circuit according to claim 3, characterized in that, The first oblique semi-reflective mirror (323) and the second oblique semi-reflective mirror (324) are each tilted towards each other at an angle of 45°.

5. The pumped laser emitter and laser circuit according to claim 3, characterized in that, A polarizing lens (325) is also fixedly installed in the beam transmission space on the side of the first oblique half-reflecting mirror (323) away from the second oblique half-reflecting mirror (324) to polarize the first oblique half-reflecting mirror (323).

6. The pumped laser emitter and laser circuit according to claim 1, characterized in that, The beam adjustment assembly (33) includes a positioning plate (331), a limiting partition (332), a drive motor (333), and an eccentric drive wheel (334). The positioning plate (331) is installed in the beam transmission space inside the sealed housing (2) by bolt threads, and the positioning plate (331) is located between the bottom of the first reflecting mirror (322) and the top of the first oblique half-reflecting mirror (323). The light-transmitting hole structure is configured as follows: a light-transmitting circular hole opened on the surface of the positioning plate (331), and a flower-shaped light-transmitting adjustment hole opened on the surface of the first reflecting lens (322); the two are corresponding to each other. The limiting partition (332) is fixedly embedded in the bottom of the positioning plate (331), and its upper and lower surfaces are respectively provided with two sets of guide grooves. The two sets of guide grooves correspond to the length and width directions of the limiting partition (332), and each set of guide grooves consists of at least two horizontal limiting grooves. There are two drive motors (333), which are fixedly installed at the bottom of the sealed housing (2) and located on both sides of the bottom of the limiting partition (332); the top output shaft ends of the two drive motors (333) are respectively eccentrically connected to eccentric drive wheels (334). The upper and lower sides of the limiting partition (332) are provided with shutter structures, and the two shutter structures are in opposite directions, corresponding to the length and width directions of the limiting partition (332) respectively. The eccentric drive wheel (334) is driven to rotate by the drive motor (333) and forms a contacting fit with the shutter structure to adjust the length and width of the light transmission adjustment hole, so as to realize the adjustment of the laser spot size.

7. The pumped laser emitter and laser circuit according to claim 1, characterized in that, The shutter structure includes a first moving part (335), a second moving part (336), and a bidirectional swinging part (337). The first moving part (335) and the second moving part (336) are slidably connected in the corresponding horizontal limiting grooves, and a return spring is connected between the sliding part of the two and the horizontal limiting groove. The bidirectional swing member (337) is rotatably disposed on one side of the limiting partition (332), and a torsion spring reset structure is connected to its rotating part for automatic reset after the bidirectional swing member (337) is rotated by force. The two ends of the bidirectional swing member (337) abut against the ends of the first moving member (335) and the second moving member (336) located on the same side, respectively.

8. The pumped laser emitter and laser circuit according to claim 7, characterized in that, The first moving part (335) and the second moving part (336) are both composed of an arrow plate in the middle and a shielding plate disposed on the side of the two arrow plates that are close to each other; The bottom of the arrow plate slides within the horizontal limiting groove via a slider adapted to the horizontal limiting groove; The shielding plates are located on both sides of the light-transmitting adjustment hole and are tightly attached to the outer surface of the limiting partition (332); The tip of the arrow plate abuts against the two ends of the bidirectional swing member (337); The arrow plate of the first moving part (335) is provided with a lever plate on the side away from the second moving part (336), and the lever plates on the upper and lower first moving parts (335) abut against the outer peripheral surface of the corresponding eccentric drive wheel (334).

9. A laser machine, applied to the pumped laser emitter and laser circuit according to any one of claims 1 to 8, characterized in that, The laser machine body (1) includes a worktable (11) on the laser machine body (1) and a machine head (12) on the top of the laser machine body (1). The aforementioned sealed housing (2) and pump laser module (3) are both located inside the machine head (12). An external display (13) is also installed on one side of the laser machine body (1). The external display (13) is electrically connected to the imaging transmission module (5) to realize the transmission of the imaging image and display the image on the external display (13). The beam received by the imaging transmission module (5) is a beam filtered by a specific wavelength filter lens to avoid white light interfering with imaging stability.

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