Handheld security laser

Abstract

The utility model relates to the technical field of laser, concretely provides a handheld security laser, include: stick main part, laser equipment, the stick main part includes the holding structure and the structure of beating that are connected with each other, the structure of beating is provided with the laser output port away from the one end of holding structure, the laser equipment sets up inside the holding structure, including laser light path and control circuit, laser light path includes the pump source that connects gradually, high reflection grating, pulse stretcher, wave division multiplexer, collimator and diffusion mirror, diffusion mirror detachable installation is at the laser output port, and laser light path still includes the colored light source and wave division multiplexer link, control circuit includes control drive circuit and power supply circuit, control drive circuit is connected with pump source and colored light source, and power supply circuit is connected with control drive circuit. To solve the technical problem of inconvenient use and limited function when the laser is applied in the security field in the related art.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and in particular to a handheld security laser. Background Technology

[0002] In terms of defensive methods, military defense mostly uses firearms for interception, and the materials used are disposable, resulting in relatively high costs; public security uses cold weapons in the form of batons, including rubber batons, metal batons and electric batons, which can only be used for short-range defense and have relatively limited functions.

[0003] Rubber batons and metal batons can only be used for physical strikes and have no additional functions; stun batons have slightly more functions than the former two, they can be used to strike with high voltage electricity, and can also provide illumination and strobe, but they do not have laser functions. As lasers are developing towards compactness and lightweight, although it is possible to integrate lasers in a single cylindrical space, there are very few handheld lasers that can combine the three functions of laser, strobe, and strike.

[0004] There are currently no effective solutions to the technical problems of inconvenience and limited functionality when using lasers in the security field. Summary of the Invention

[0005] The present invention provides a handheld security laser, which at least solves the technical problems of inconvenience and limited functionality when lasers are used in the security field in related technologies.

[0006] According to one aspect of the present invention, a handheld security laser is provided, comprising: a stick-shaped main body and a laser device; the stick-shaped main body includes a gripping structure 1 and a striking structure 2 connected to each other; the laser device is disposed inside the gripping structure 1, and a laser output port 3 is provided at the end of the striking structure 2 away from the gripping structure 1; the laser device includes a laser optical path and a control circuit; the laser optical path includes a pump source 5, a high-reflectivity grating 6, a pulse stretcher 7, a wavelength division multiplexer 8, a collimator 9, and a diffuser 10 connected in sequence, the diffuser 10 being detachably mounted on the laser output port 3; the laser optical path also includes a colored light source, the colored light source being connected to the wavelength division multiplexer 8; the control circuit includes a control drive circuit 16 and a power supply circuit, the control drive circuit 16 being connected to the pump source 5 and the colored light source, and the power supply circuit being connected to the control drive circuit 16.

[0007] As an optional solution, the grip structure 1 is a metal tube 101, and the outer surface of the metal tube 101 is covered with an anti-slip layer; a handle collar 102 is provided in the middle of the metal tube 101, and the handle collar 102 divides the metal tube 101 into two parts, which are configured for two-hand gripping.

[0008] As an optional solution, the striking structure 2 is a metal cylinder 201, the diameter of which is larger than the diameter of the metal tube 101; a transition structure 202 is provided at the connection position between the metal cylinder 201 and the metal tube 101.

[0009] As an alternative, the outer surface of the metal cylinder 201 is provided with an array of papillae structures 203, wherein the papillae structures 203 are square pyramids.

[0010] As an optional solution, the power supply circuit includes a battery 15, the charging port 4 of which is disposed on the transition structure 202. The battery 15 is connected to the control drive circuit 16, and a first switch 12 is disposed on the connected circuit. The first switch 12 is disposed at the end of the holding structure 1 and is configured as the main switch of the laser device.

[0011] As an optional solution, a second switch 13 is provided on the connection circuit between the control drive circuit 16 and the colored light source. The second switch 13 is configured to control the colored light source to turn on and output indicator light through the wavelength division multiplexer 8 and the collimator 9. The second switch 13 is provided on the transition structure 202.

[0012] As an optional solution, the diffuser 10 is mounted on the laser output port 3 via a magnetic suction structure; the second switch 13 is configured to send a strobe command to the control drive circuit 16 when double-clicked, the strobe command being used to trigger the control drive circuit 16 to send a square wave to the colored light source to control the colored light source to flicker, and output a strobe flash through the wavelength division multiplexer 8 and the collimator 9.

[0013] As an optional solution, the colored light source is a green laser diode 11, and the collimator 9 is an achromatic collimator.

[0014] As an optional solution, a third switch 14 is provided on the connection circuit between the control drive circuit 16 and the pump source 5. The third switch 14 is configured to control the pump source 5 to turn on and output laser light through the high-reflectivity grating 6, pulse stretcher 7, wavelength division multiplexer 8 and collimator 9. The high-reflectivity grating 6 is connected to the pulse stretcher 7 through an active optical fiber 17. The third switch 14 is located on the transition structure 202 near the second switch 13.

[0015] As an optional solution, the laser output by the laser device is infrared light, the power of the laser device is not less than 20W, the radial dimension of the holding structure 1 does not exceed 40mm, and the radial dimension of the striking structure 2 does not exceed 50mm.

[0016] The handheld security laser provided by this invention includes a stick-shaped main body and a laser device. The stick-shaped main body has a gripping structure 1 and a striking structure 2 connected to each other, enabling the laser to strike. The laser device is located inside the gripping structure 1, and the striking structure 2 has a laser output port 3 at the end away from the gripping structure 1, enabling the laser to output laser light. The laser device includes a laser optical path and a control circuit. A diffuser 10 is detachably installed at the laser output port 3, enabling the laser to have a strobe function. This solves the technical problems of inconvenience and limited functionality when using lasers in the security field in related technologies, achieving the technical effect of convenient use and comprehensive functions. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of a handheld security laser device according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 The main view.

[0020] Figure 3 yes Figure 1 A bottom view.

[0021] Figure 4 yes Figure 1 The left view.

[0022] Figure 5 yes Figure 1 The right view.

[0023] Figure 6 This is a schematic diagram of the laser device setup according to an embodiment of the present invention.

[0024] The above-mentioned figures include the following reference numerals: 1. Holding structure; 101. Metal tube; 102. Handle collar; 2. Striking structure; 201. Metal cylinder; 202. Transition structure; 203. Papillary structure; 3. Laser output port; 4. Charging port; 5. Pump source; 6. High-reflectivity grating; 7. Pulse stretcher; 8. Wavelength division multiplexer; 9. Collimator; 10. Diffuser; 11. Green laser diode; 12. First switch; 13. Second switch; 14. Third switch; 15. Battery; 16. Control drive circuit; 17. Active optical fiber. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] See Figures 1 to 6As shown, this application provides a handheld security laser, including: a stick-shaped main body and a laser device; the stick-shaped main body includes a gripping structure 1 and a striking structure 2 connected to each other; the laser device is disposed inside the gripping structure 1, and a laser output port 3 is provided at the end of the striking structure 2 away from the gripping structure 1; the laser device includes a laser optical path and a control circuit; the laser optical path includes a pump source 5, a high-reflectivity grating 6, a pulse stretcher 7, a wavelength division multiplexer 8, a collimator 9, and a diffuser 10 connected in sequence, the diffuser 10 being detachably mounted on the laser output port 3, the laser optical path also including a colored light source, the colored light source being connected to the wavelength division multiplexer 8; the control circuit includes a control drive circuit 16 and a power supply circuit, the control drive circuit 16 being connected to the pump source 5 and the colored light source, and the power supply circuit being connected to the control drive circuit 16.

[0029] The rod-shaped main body serves as the carrier and operating platform for the device, primarily functioning as a handheld component, striking mechanism, and laser output guide. The grip structure 1, the part for the user to hold, integrates the laser device and must be ergonomically designed to ensure grip stability. The striking structure 2, connected to the grip structure 1, has a laser output port 3 at its end furthest from the grip structure 1. The striking structure 2 functions two ways: firstly, as a physical striking component to deliver the striking action; and secondly, as a guide for the laser beam through the output port.

[0030] The striking function of the handheld security laser can be used for close-range self-defense in areas such as factory gatehouses, bank security guard rooms, and jewelry store security posts when suspicious persons forcibly break in or attack on-duty personnel. By physically impacting the person, the laser can restrict their movement and buy time for alarms or backup calls.

[0031] In mobile scenarios such as ride-hailing vehicles, logistics delivery vehicles, and small armored vehicles, if encountering situations such as passenger harassment, road rage attacks, or thieves stealing from the vehicle, where the space is confined and long-distance laser deterrence is not possible, the striking function can be used to target and strike the criminals, forcibly stopping their attacks or thefts and ensuring the safety of oneself and property.

[0032] The laser deterrent is effective in close-range scenarios such as nighttime patrols in residential areas, duty around schools, and security in parks. When encountering situations such as provocation by intoxicated individuals or disturbances by homeless people, if the laser deterrent is ineffective, the striking function can be used for physical warnings, such as tapping the ground or railings to produce a deterrent sound, or, if necessary, lightly striking the other party's limbs to force them to stop their disruptive behavior and maintain order in the patrol area.

[0033] In enclosed equipment maintenance rooms, vehicle emergency escape scenarios, and other emergencies such as door lock malfunctions or windows that cannot be opened, if personnel are trapped and need to quickly enter the equipment area to handle the malfunction, the hard structure with striking function can be used to assist in knocking on weak parts such as glass edges and simple door locks to achieve emergency obstacle breaking and improve rescue or handling efficiency.

[0034] The wavelength division multiplexer 8 combines the laser generated by the pump source 5 and the light from the colored light source into a single beam, which is then output from the same optical path to achieve the combined effect of laser beam and visible light marking.

[0035] Collimator 9 collimates the beam, reduces divergence, and ensures that the laser can still concentrate on the target within a certain distance, thus enhancing long-range deterrence.

[0036] A colored light source provides visible light, which is output synchronously with the laser beam via a wavelength division multiplexer 8. Its purpose is to ensure the target can clearly see the beam trajectory, enhancing psychological deterrence. Colored light sources can be provided through light-emitting diodes (LEDs), gas discharge lamps (such as neon lights or sodium lamps), laser devices, filters combined with white light sources, fluorescent lamps, and traditional incandescent lamps (with color filters). This embodiment uses a green laser diode, which offers high brightness, excellent monochromaticity, low energy consumption, and long lifespan. It is also compact and easily integrated into the laser, enabling stable output of strong and pure green light in scenarios requiring laser pointing.

[0037] The control drive circuit 16 is connected to the pump source 5 and the colored light source. According to the operation command, it controls the start or stop of both and adjusts the power to achieve the effect of controlling and adjusting the laser intensity or visible light brightness.

[0038] The power supply circuit supplies power to the control drive circuit 16. It typically has a built-in rechargeable battery 15 to provide stable voltage and current, ensuring the device's battery life.

[0039] See Figures 1 to 6 As shown, pressing the first switch 12 and holding the handle structure 1 while pressing the second switch 13 with a finger enables the output of an indicator light, with an output distance range of 0-50m. Pressing the first switch 12 primarily powers the control drive circuit 16 via the battery 15. Pressing the second switch 13 then connects the control drive circuit 16 to the green laser diode 11, enabling the green laser diode 11 to output green light. The wavelength division multiplexer 8 couples the green light to the fiber core. Finally, the collimator 9 collimates the green light and outputs it from 0-50m, achieving continuous green light output.

[0040] In scenarios such as nighttime security patrols and parking lot anti-theft, green indicator lights can illuminate before lasers, providing a visual warning to suspicious individuals and initially curbing potential dangerous behaviors. When multiple lasers are used in coordination, such as in the security of large venues, the working status of the equipment can be distinguished by the color and flashing frequency of the indicator lights, such as A emitting a laser while B is on standby, which facilitates unified personnel dispatch and improves security efficiency.

[0041] During nighttime patrols of the factory area and anti-theft operations in the parking lot, the green light illuminates before the high-energy laser. Its indicator point accurately marks the location where the laser will soon strike, such as the clothing of suspicious individuals or the windows of vehicles. This not only warns suspicious individuals in advance but also helps security personnel confirm the laser's output point, avoiding accidental illumination.

[0042] In the event of a sudden security incident, such as the isolation of a dangerous area, the green light indicator can clearly mark the boundary of the laser coverage. The area swept by the green light is the laser deterrence range, which helps on-site personnel quickly identify dangerous areas and allows security personnel to accurately control the laser output position to avoid affecting unrelated personnel.

[0043] During the production or maintenance of handheld security lasers, the coaxial green light indicator can be used to visually observe whether the laser path has deviated. If the green light points to the expected position, it indicates that the laser output path is normal. This allows for quick calibration of the optical path alignment of components such as high-reflection gratings and low-reflection gratings, ensuring the accuracy of the laser output from the equipment.

[0044] Pressing the third switch 14 after the above steps enables laser output, and the position indicated by the indicator light is the laser output position. Based on the above steps, the indicator light can be continuously output. Then, pressing the third switch connects the control drive circuit 16 and the pump source 5. The pump source 5 outputs a specific wavelength laser, which is formed into a stable laser beam through the high-reflectivity grating 6 and absorbed by the active fiber 17. The flat angle of the collimator 9 acts as a low-reflectivity element, oscillating with the front-end high-reflectivity grating to reduce divergence and form a specific wavelength laser within the fiber core. Finally, it is output from the laser output port 3 after passing through the pulse stretcher 7, wavelength division multiplexer 8, and collimator 9. Since both the laser and green light are output from within the fiber core and collimated by the achromatic collimator, the indicator light and laser are coaxial, thus ensuring that the position indicated by the green light is the laser output position.

[0045] Pump source 5 is the excitation source for laser generation, providing energy to excite the laser medium to generate the initial laser beam. The pump source can be a semiconductor diode (such as a laser diode LD), a gas discharge tube (such as a xenon lamp or krypton lamp), an RF power supply (for gas lasers), or a DC / AC power supply (for semiconductor lasers), etc. This embodiment uses a semiconductor pump source, which offers high efficiency (electro-optical conversion efficiency of 30%-60%), long lifespan (typically 10,000-50,000 hours), small size for easy integration, low heat generation during operation, high stability, and low energy consumption and operating costs.

[0046] The high-reflectivity grating 6, together with other optical components, forms a laser resonant cavity, which causes photons to oscillate back and forth within the cavity, enhancing the laser intensity and ultimately forming a stable laser beam.

[0047] The difference between high-reflectivity gratings and low-reflectivity gratings lies in their reflectivity and functional positioning for the target wavelength laser. High-reflectivity gratings have extremely high reflectivity (≥99%), which can be used to construct a laser resonant cavity, reflect photons to achieve intracavity energy amplification and filter stray light, resulting in strong output light. Low-reflectivity gratings have extremely low reflectivity (≤10%), no special high-reflectivity processing, low reflection efficiency, and weak output light. In this embodiment, the high reflectivity (≥99%) of the high-reflectivity grating maximizes the number of photons within the cavity, providing a high-power, highly stable input light source for the subsequent pulse stretcher.

[0048] The pulse stretcher 7 widens the laser pulse width, reduces peak power, avoids fatal harm to the human body from high power, meets the non-lethal security requirements, and ensures that the average power is sufficient to form a deterrent.

[0049] The diffuser 10 is a detachable core adjustment component. When attached, the beam divergence angle increases, making it suitable for close-range, large-area warning; when removed, the beam remains collimated, making it suitable for long-range, precise aiming.

[0050] The diffuser 10 is magnetically attached to the laser output port 3. Pressing the first switch 12 and holding the handle 1 while pressing the second switch 13 twice activates the strobe function using an indicator light. Specifically, with the diffuser 10 added to the laser output port 3, pressing the first switch 12 connects the battery 15 to the control drive circuit 16. Then, pressing the second switch 13 twice activates the control drive circuit 16, which automatically outputs a 5Hz square wave to the green laser diode 11, causing the green light to flicker and achieving the strobe function.

[0051] The green strobe effect can cause a slowdown in the movements of suspicious individuals, a key element in optimizing laser deterrence. This effect stems from the physiological mechanism of the instantaneous overload of the optic nerve caused by strong light and the startle reflex, effectively depriving the target of vision and inducing a brief period of behavioral paralysis. This green strobe effect creates two major advantages: First, it provides the operator with a crucial aiming window, allowing for more precise targeting of specific areas such as limbs or torso within the seconds of the target's decreased reaction time, significantly improving first-shot control efficiency.

[0052] Secondly, during the subsequent deterrent strike phase, the target's brief pause significantly reduces its likelihood of evasion, thus ensuring that the laser beam can continuously target the same area. This is crucial for laser deterrents that rely on thermal accumulation; sufficient irradiation time is a prerequisite for achieving effective pain inhibition or non-lethal physiological interference, preventing energy dispersion due to target movement from weakening the final effect.

[0053] Moreover, green light is used because its wavelength (approximately 555 nanometers) is at the peak of human visual sensitivity. This means that at the same power, green light has the strongest perceived brightness and can induce retinal overload and startle reflex with the highest efficiency, thereby achieving a very strong instantaneous dazzling and slowing effect, achieving the optimal non-lethal deterrence and tactical control objectives with the lowest energy consumption.

[0054] In the face of emergencies such as nighttime intrusion into the factory area or theft in the parking lot, activating the strobe function can project a high-frequency flashing bright light at suspicious persons, instantly interfering with their visual judgment, such as causing temporary blindness or blurred vision, weakening their ability to act, and at the same time creating a strong psychological deterrent, forcing them to stop their illegal behavior or leave.

[0055] In scenarios such as field security patrols and duty in remote areas, if there are emergencies such as missing persons or equipment failures, the strobe function can be used as a distress signal. Through regular high-frequency flashing, it can be quickly identified by companions or rescuers at a distance, especially at night, to pinpoint the location of the distress call and improve rescue efficiency.

[0056] In the event of sudden chaos during large-scale event security or in crowded public places such as stations and shopping malls, the strobe function can be directed to the chaotic area, attracting the attention of the crowd through strong flashing light, while interfering with the vision of those who disrupt order, assisting security personnel in quickly controlling the situation and guiding the crowd to evacuate in an orderly manner.

[0057] The handheld security laser provided in this embodiment possesses both laser deterrence and physical striking functions, catering to both mid-range and close-range security scenarios, thus offering wider applicability. The pulse stretcher 7 reduces peak laser power to prevent fatal injuries; the use of a colored light source enhances deterrence while reducing the risk of misoperation. The detachable diffuser 10 allows for switching between narrow-beam long-range aiming and wide-beam close-range large-area warning, flexibly addressing different security needs. The laser device is integrated into the handle structure 1 of the stick-shaped main body, while the striking structure 2 also functions as an output port. Its compact size and easy handheld design make it suitable for portable use.

[0058] As an optional solution, the grip structure 1 is a metal tube 101, and the outer surface of the metal tube 101 is covered with an anti-slip layer; a handle collar 102 is provided in the middle of the metal tube 101, and the handle collar 102 divides the metal tube 101 into two parts, which are configured for two-hand gripping.

[0059] The metal tube 101, as the core skeleton of the holding structure 1, is made of metal materials such as aluminum alloy and stainless steel to balance strength and lightweight. The metal tube 101 supports the installation stability of the internal laser equipment, while providing structural rigidity during physical impacts to prevent deformation, ensuring that the overall weight of the equipment is controllable and reducing fatigue from prolonged handheld use.

[0060] An anti-slip layer is applied to the outer surface of the metal tube 101, and the material can be rubber, silicone, or a textured polymer. The anti-slip layer prevents slippage due to sweaty hands or forceful grip, especially improving stability during emergency operations. When gripping, the anti-slip layer reduces direct contact between the hand and the metal tube 101, reducing discomfort during prolonged use; it also cushions some of the reaction force during impacts, protecting the user's hands.

[0061] The handle collar 102 is located in the middle of the metal tube 101, dividing the tube into upper and lower gripping areas. This clearly distinguishes the positions for both hands, preventing hand interference during operation. The collar's raised design further enhances the sense of hand positioning. Two-handed grip improves aiming stability, reduces the impact of hand tremors on the laser's impact point, and ensures the accuracy of target deterrence. During physical strikes, two-handed grip allows for coordinated force from the arms and torso, increasing striking power and control precision, while reducing the risk of wrist sprains caused by reaction forces when using a single hand grip.

[0062] The combination of the anti-slip layer and the handle collar 102 in the grip structure 1 described in this embodiment reduces the operational error rate from both anti-slip and positioning perspectives. The handle collar 102 divides the grip area according to the force exertion habits of both hands, balancing control efficiency and user comfort, and taking into account both the precise operation of laser aiming and the force operation of striking, so that the device can play a role in different security scenarios.

[0063] As an alternative, the striking structure 2 is a metal cylinder 201, the diameter of which is larger than the diameter of the metal tube 101; a transition structure 202 is provided at the connection between the metal cylinder 201 and the metal tube 101.

[0064] The larger diameter of the metal cylinder 201 compared to the metal tube 101 serves the physical striking function. The larger diameter increases the striking contact area, and the thicker metal cylinder 201, while maintaining a lightweight design, enhances structural strength through wall thickness, such as resistance to bending and impact, ensuring it is less prone to deformation during striking and extending the equipment's lifespan. The larger diameter of the metal cylinder 201 compared to the metal tube 101, which serves as the gripping structure 1, clearly distinguishes the striking area from the gripping area in terms of appearance and size, avoiding confusion during use and improving operational intuitiveness.

[0065] The transition structure 202 makes the transition from the metal tube 101 to the metal cylinder 201 smoother, eliminating stress concentration caused by abrupt diameter changes and enhancing the impact resistance of the connection. Especially during impacts, the connection point needs to withstand greater forces; the transition structure 202 can disperse stress and prevent breakage. In terms of operational safety, it avoids sharp steps or edges at the connection point, preventing users from being scratched or injured when holding or swinging the device, thus improving grip comfort.

[0066] The transition structure 202 provided in this embodiment solves the mechanical shortcomings at the joint, combining the metal tube 101 and the metal cylinder 201. This ensures the effectiveness of the striking function, avoids structural weaknesses, and improves the durability of the equipment. The transition structure 202 eliminates the risk of sudden size changes and balances mechanical performance and grip comfort.

[0067] As an alternative, the outer surface of the metal cylinder 201 is provided with an array of nipple structures 203, which are quadrangular pyramids.

[0068] A uniform array ensures even force distribution during impact, preventing excessive local pressure caused by dense local papillae, further controlling the upper limit of damage, while also ensuring structural aesthetics and ease of processing.

[0069] The papillary structure 203 is chosen as a square pyramid rather than a cylinder or cone because its multi-sided and blunt-tipped structure can simultaneously achieve the three major goals of friction enhancement, pressure dispersion and visual deterrence, making it more suitable for the complex needs of security scenarios than other shapes.

[0070] The sharp apex of the four-sided pyramid, the non-lethal blunt tip design, and the array arrangement can increase local friction when striking the target, enhancing the sense of resistance to the target. For example, when controlling suspicious persons, the biting effect of the papillary structure 203 can restrict their movements, improve control efficiency, and at the same time prevent the equipment from slipping when in contact.

[0071] The arrayed papillary structure 203 presents a non-smooth deterrent form, which, compared to the smooth metal cylinder 201, can bring a stronger sense of psychological pressure to the target, assist the laser deterrent function, and reduce the actual striking frequency.

[0072] The papillary structure 203, by replacing the surface contact of a smooth cylinder with multi-point contact, can disperse the local pressure during an impact to multiple vertices, avoiding serious injury caused by excessive pressure at a single location. Bruising replaces scratches and fractures, strictly meeting the core requirement of non-lethal security equipment. The vertices of the four-sided pyramid are usually designed with blunt tips, which retains the deterrent form while eliminating punctures and cuts caused by sharp vertices, balancing deterrence and safety.

[0073] If the user accidentally grips and strikes the structure 2 in an emergency, the papillary structure 203 can provide additional friction to prevent the device from slipping out of the hand; at the same time, the array texture can also help the user quickly perceive the boundary between the grip area and the striking area, reducing operational errors.

[0074] As an optional solution, the power supply circuit includes battery 15, such as Figure 3 The charging port 4 of the battery 15 shown is located on the transition structure 202, as follows: Figure 6 As shown, battery 15 is connected to control drive circuit 16, and a first switch 12 is provided on the connected circuit; as Figure 5 As shown, the first switch 12 is located at the end of the holding structure 1, and the first switch 12 is configured as the main switch of the laser device.

[0075] As the power source for the device, battery 15 needs to be adapted to the lightweight and long-lasting requirements of handheld devices. A rechargeable lithium battery 15 can be selected to balance capacity and size. The power supply circuit stably outputs electrical energy to the control drive circuit 16 to power the laser device.

[0076] The charging port 4 is positioned at the transition between the metal tube 101 and the metal cylinder 201 to avoid occupying space in the grip structure 1. The grip structure 1 needs to reserve space for an anti-slip layer, a handle collar 102, and internal circuit mounting. The transition structure 202 has relatively independent space, which can reduce component interference. No parts need to be disassembled during charging, and the transition structure 202 is usually a non-high-frequency grip area, so it does not affect the static placement of the device after plugging in.

[0077] The first switch 12 is located at the end of the grip structure 1. As the main switch, its core function is to cut off and connect the main power supply circuit of the laser equipment. When closed, the laser equipment has no power input regardless of subsequent operations, and the pump source 5 and the colored light source do not work. When opened, the control drive circuit 16 can receive commands to drive the laser components. The main switch prevents accidental laser output caused by accidental activation of the switch on the transition structure 202. Especially when storing and carrying the equipment, closing the main switch can completely eliminate safety hazards. The end of the grip structure 1 is outside the blind spot for single-handed operation, requiring deliberate lifting of the hand to operate, avoiding accidental activation during daily gripping. At the same time, holding with both hands does not affect the main operator's control of the switch on the transition structure 202.

[0078] The power circuit design provided in this embodiment ensures that the main power can be quickly cut off in an emergency, while not affecting the flexibility of other buttons during normal use. The layout of the charging port 4, the first switch 12, the laser component, and the striking structure 2 achieves physical partitioning of power supply, control, and function output, avoiding mutual interference between components in a small handheld space. At the same time, it conforms to the user's intuitive operation of back-end control and front-end function, and the user does not need to memorize complex operations, resulting in a low learning curve.

[0079] As an alternative solution, such as Figure 6 As shown, a second switch 13 is provided on the connection circuit between the control drive circuit 16 and the colored light source. The second switch 13 is configured to control the colored light source to turn on and output indicator light through the wavelength division multiplexer 8 and collimator 9. The second switch 13 is provided on the transition structure 202.

[0080] The second switch 13 acts as an independent control switch for the colored light source, enabling the indicator light to be output independently. Without starting the pump source 5, the colored light source can be triggered simply by the second switch 13, and the indicator light is output through the wavelength division multiplexer 8 and collimator 9.

[0081] Colored light sources can be set to red, green, blue, etc. In this embodiment, green light source is used because it is low in aggression and suitable for guiding and marking scenes, so as to avoid causing unnecessary panic.

[0082] The core function of the Wavelength Division Multiplexer (WDM) 8 is to simultaneously transmit or separate multiple optical signals of different wavelengths in a single optical channel, achieving efficient transmission of multiple signals in a single channel and avoiding mutual interference between optical signals of different wavelengths. In this embodiment, a narrowband WDM 8 is used. The WDM 8 strictly allocates channels according to wavelength to avoid mutual interference between the laser and the indicator light, ensuring the power stability of the laser and the clarity of the indicator light. It integrates the two lights into the same path and finally outputs them through the same collimator 9, reducing the number of internal optical components and lowering the size and complexity of the device.

[0083] Collimator 9 places the laser source at the focal point of the lens. According to the principles of geometric optics, diverging light emitted from the lens focal point is refracted by the lens and becomes a beam with a parallel propagation direction. In this embodiment, collimator 9 ensures the precise pointing of the indicator light and the laser, reduces optical power loss, and is compatible with the optical path integration of wavelength division multiplexer 8. The mixed light output from wavelength division multiplexer 8 needs to be uniformly calibrated into parallel light by collimator 9 to form a stable composite beam for output, avoiding separation of the two beams due to different divergence angles, and ensuring that the user sees a parallel beam containing both laser and indicator light, rather than two separate beams.

[0084] The collimator 9 in the above embodiments can be a single-wavelength collimator, an achromatic collimator, a lens collimator, a reflective collimator, an optical fiber collimator, a miniature collimator, a polarization-maintaining collimator, etc. In this embodiment, the use of an achromatic collimator can ensure that the laser and the indicator light are completely aligned, avoid differences in power loss of multi-wavelength light, and adapt to flexible designs with a wide wavelength range.

[0085] Independent control of the indicator light can be used in non-deterrence auxiliary scenarios, such as: during night patrols in dim environments, the indicator light can be used to temporarily illuminate the target area or path, avoiding energy waste caused by turning on high-power lasers; the indicator light can be used to illuminate suspicious targets at a distance to provide visual guidance to teammates without directly using deterrent lasers; turning on the indicator light alone can quickly determine whether the wavelength division multiplexer 8 and collimator 9 of the laser optical path are unobstructed, simplifying the troubleshooting process.

[0086] The second switch 13 is positioned on the transition structure 202, forming a clear operating zone with the first switch 12. Users can quickly distinguish the function by their hand position, reducing accidental touches. When holding the device with both hands, the hand gripping the area near the transition structure 202 can easily trigger the second switch 13; when operating with one hand, the thumb can also reach it naturally without adjusting the grip posture, improving operational efficiency in emergency situations.

[0087] As an alternative, the diffuser 10 is mounted on the laser output port 3 via a magnetic suction structure; the second switch 13 is configured to send a strobe command to the control drive circuit 16 when double-clicked, the strobe command being used to trigger the control drive circuit 16 to send a square wave to the colored light source to control the colored light source to flicker, and output the strobe flash through the wavelength division multiplexer 8 and collimator 9.

[0088] The diffuser is only required when using the strobe function. It is not required for normal laser use, so it is designed to be magnetic for easy installation and removal.

[0089] The magnetic structure replaces traditional threaded and snap-fit ​​connections, allowing the diffuser 10 to be installed or removed with just two actions: close-up adsorption or forceful pulling, reducing the time to less than one second. In emergency scenarios, such as switching from long-range laser aiming to close-range large-area strobe function, the response speed is significantly improved, avoiding delays caused by cumbersome operations. The automatic guidance of the magnetic attraction and the natural alignment of opposite magnetic poles ensure that the optical center of the diffuser 10 is precisely aligned with the laser output port 3, avoiding beam distortion caused by alignment deviations during manual installation, such as spot misalignment and uneven divergence.

[0090] The magnetic structure eliminates the need to machine threads or slots at the laser output port 3, reducing the structural complexity at the end of the metal cylinder 201; the diffuser 10 itself also does not need to be fitted with mechanical locking components, allowing for the use of lighter and thinner materials, such as high-strength plastics and optical glass, reducing the weight at the front of the device and improving the balance of the grip.

[0091] The control drive circuit 16 outputs a square wave signal of a specific frequency, such as a 5HZ square wave to drive a colored light source to flash rapidly between bright and dark. It utilizes the physiological response of the human eye to high-frequency changing light, such as visual persistence and dizziness, to weaken the target's ability to move. It is especially suitable for close-range confrontation or dispersal scenarios, and its effect is better than constant light.

[0092] Double-click operation enables a single switch to function multiple functions. A short press keeps the indicator light on, while a double press triggers a strobe effect. No additional switch is needed, which saves installation space for the transition structure 202 and reduces operation memory costs, conforming to the design logic of handheld devices that can be used with one button.

[0093] The square wave output by the control drive circuit 16 needs to match the characteristics of the colored light source and the response speed of the green laser diode. For example, a duty cycle of 50% ensures equal bright and dark times, guaranteeing a strong flicker rhythm and better interference effect; a frequency of 5Hz balances visual interference intensity and light source lifespan, as excessively high frequencies may cause the LED to overheat.

[0094] The double-click detection threshold is set through programming of the control circuit. The double-click time window, such as 300 to 500 ms, means that the interval between two presses must be within this range to be judged as a strobe command, so as to avoid the misjudgment of double-click due to hand tremors when pressing hard once.

[0095] As an alternative, the colored light source is a green laser diode 11, and the collimator 9 is an achromatic collimator.

[0096] The human eye is 5-10 times more sensitive to 532nm green light than to red light. At the same power, green lasers have a longer visible distance, such as being clearly visible at 100m. They also have stronger penetration in complex environments, such as fog, smoke, and strong light backgrounds, making them suitable for marking distant targets or providing large-scale warnings.

[0097] The visual impact of green lasers lies between the softness of red light and the harshness of blue light. It can create psychological deterrence through a bright beam without causing the target to lose control due to excessive glare, making it more suitable for security needs requiring controllable deterrence.

[0098] If the device's functional laser is a common 1064nm infrared laser, and the green laser's wavelength difference between 532nm and 1064nm is significant, the dual-wavelength collimator 9 can easily achieve precise output of the same optical path, avoiding optical path crosstalk caused by similar wavelengths.

[0099] The refractive index difference between 532nm and 1064nm green lasers in ordinary glass is approximately 5%-8%. Using a single-wavelength collimator would cause a deviation in the parallelism of the two beams, resulting in inaccuracies in the accuracy of the indicator light pointing to point A while the functional laser acts on point B. An achromatic collimator, through its lens group design, can control the collimation deviation of the two wavelengths to within 0.05mrad, ensuring that the point deviation of the two beams is ≤5mm within a distance of 100 meters, meeting the operational requirement of "what you see is what you get."

[0100] Ordinary collimators have high reflection losses for non-adapted wavelengths, while achromatic collimators can control the insertion loss of 532nm and 1064nm to within 3%, which can ensure sufficient brightness of green indicator light without excessively weakening the output power of functional laser.

[0101] The colored light source is a green laser diode 11, and the collimator 9 is a combination design of an achromatic collimator. This design not only leverages the visual advantages of green light, but also solves the core pain point of multi-wavelength collaborative output through achromatic technology. This greatly improves the accuracy and reliability of the indication and deterrence functions, making it more suitable for the practical needs of security scenarios for visualization and controllability.

[0102] As an alternative solution, such as Figure 6As shown, a third switch 14 is provided on the connection circuit between the control drive circuit 16 and the pump source 5. The third switch 14 is configured to control the pump source 5 to turn on and output laser through the high-reflectivity grating 6, pulse stretcher 7, wavelength division multiplexer 8 and collimator 9. The third switch 14 is located on the transition structure 202 near the second switch 13.

[0103] The third switch 14, as the dedicated control switch of the pump source 5, directly determines the opening and closing of the core laser. Only when the third switch 14 is triggered will the control drive circuit 16 supply power to the pump source 5, so that the pump source 5 excites the laser medium, which forms a complete laser optical path through the high-reflectivity grating 6, pulse stretcher 7, wavelength division multiplexer 8, and collimator 9, and finally outputs a laser with deterrent function.

[0104] During low-intensity warning, only the second switch 13 is turned on, with a green indicator light used for path illumination and target marking, without laser output to avoid energy waste and false deterrence; during medium-intensity deterrence, both the second and third switches 14 are turned on simultaneously, with the green indicator light marking the target and the laser output synchronously, allowing the user to precisely control the laser's landing point through the visible indicator light, thus improving the accuracy of deterrence; during emergency control, only the third switch 14 is turned on, suitable for scenarios where marking is not required and rapid laser output is needed, such as rapid deterrence in the event of sudden danger.

[0105] The placement of the third switch 14 on the transition structure 202 and close to the second switch 13 is based on a dual consideration of operational efficiency and logical coherence. The transition structure 202 serves as the boundary between the gripping area and the striking area, and the second switch 13 and the third switch 14 are centrally located there, forming a physical partition of master control and sub-control with the first switch 12. When the user holds the device, their fingers naturally fall near the transition structure 202, allowing them to quickly distinguish between the indicator light and the core functions, avoiding accidental touches of the master switch or confusion of functions.

[0106] When held with both hands, the hand holding the transition structure 202 can operate two switches simultaneously. The thumb presses the second switch 13 and the index finger presses the third switch 14 to quickly switch between the indicator light and the laser. For example, the indicator light can be turned on for positioning first, and then the laser can be turned on for deterrence. When operating with one hand, the thumb can move flexibly between the two switches without adjusting the grip posture, which is suitable for rapid response in emergency scenarios.

[0107] The transition structure 202 has integrated the second switch 13 and the charging port 4. The third switch 14 is installed nearby and can share the internal wiring channel and the connection harness of the control drive circuit 16. This avoids adding extra wiring in the narrow grip structure 1, reduces component interference, and reduces assembly complexity.

[0108] As an alternative solution, such as Figure 6 As shown, the high-reflectivity grating 6 is connected to the pulse stretcher 7 via an active optical fiber 17.

[0109] The high-reflectivity grating 6, as the core component of the laser resonant cavity, reflects the initial optical signal generated by the pump source 5 back to the resonant cavity, causing photons to oscillate back and forth within the cavity and continuously amplify, ultimately forming a laser beam with concentrated energy and a single wavelength, which is the key to laser gain enhancement.

[0110] Active fiber 17: Here, "active core" refers to fiber doped with laser gain media, such as ytterbium-doped or erbium-doped fiber, rather than a simple signal transmission fiber. Its function is to provide secondary gain to the light while transmitting the optical signal, compensating for energy losses during transmission, such as reflection and scattering losses, and ensuring that the laser entering the pulse stretcher 7 still maintains sufficient power, avoiding insufficient power after subsequent modulation.

[0111] The pulse stretcher 7 receives and enhances the laser transmitted through the active optical fiber 17. Through dispersive elements, such as grating pairs or prism pairs, it widens the pulse width of the narrow pulse laser, reduces the peak power, meets the non-lethal security requirements, and ensures that the average power of the laser meets the deterrence or operational requirements.

[0112] The high-reflectivity grating 6 is connected to the pulse stretcher 7 via an active optical fiber 17, reducing the difficulty of optical path alignment. If the high-reflectivity grating 6 and the pulse stretcher 7 were to be rigidly connected in free space, extremely high mechanical precision would be required; otherwise, it would easily lead to optical signal deviation and a sharp increase in loss. The active optical fiber 17 can achieve a flexible connection through an optical fiber connector, allowing for slight positional deviations and greatly simplifying the assembly and debugging of the internal optical path of the equipment. At the same time, it compensates for optical energy loss. After the laser is output from the high-reflectivity grating 6, it will lose 10%-20% of its power due to air scattering and interface reflection during free space transmission. However, the active optical fiber 17, through its internal gain medium, can recover the lost energy, keeping the laser power loss entering the pulse stretcher 7 within 5%, ensuring that the subsequently stretched laser still has sufficient deterrent power.

[0113] As an optional solution, the laser output by the laser device is infrared light, the power of the laser device is not less than 20W, the radial dimension of the holding structure 1 does not exceed 40mm, and the radial dimension of the striking structure 2 does not exceed 50mm.

[0114] The lasers in related technologies all output visible light. The impact of visible light is limited to stunning, and the power is generally in the milliwatt range, with a maximum of only 1W. Simply increasing the power of visible light would lead to premature detection when the light intensity increases. However, this application, by generating higher-power infrared light, can achieve high-power strikes without visual impact.

[0115] Theoretically, if the maximum permissible radiation dose (MPE) to the skin from which the laser is emitted exceeds 1 W / cm², an effective strike can be made in less than one second. To achieve an effective strike at medium to long distances (e.g., tens of meters) in a shorter time, the power of the laser device in this embodiment is no less than 20 W. Preferably, it can be 30 W to 60 W, for example, 30 W, 35 W, 40 W, 45 W, 50 W, 55 W, 60 W, etc.

[0116] It should be noted that the higher the power of the laser device, the larger its size. However, considering that the laser needs to be held by a person, the overall size cannot be too large. Specifically, the radial dimension of the holding structure 1 shall not exceed 50mm, for example, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, etc. The radial dimension of the striking structure 2 shall not exceed 60mm, for example, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, 51mm, 52mm, 53mm, 54mm, 55mm, 56mm, 57mm, 58mm, 59mm, 60mm.

[0117] Taking a 30W laser device as an example, the radial dimension of its holding structure 1 is 35mm, and the radial dimension of its striking structure 2 is 41mm. For a 40W laser device, the radial dimension of its holding structure 1 is 41mm, and the radial dimension of its striking structure 2 is 52mm. For a 50W laser device, the radial dimension of its holding structure 1 is 47mm, and the radial dimension of its striking structure 2 is 56mm. For a 60W laser device, the radial dimension of its holding structure 1 is 49mm, and the radial dimension of its striking structure 2 is 60mm.

[0118] In addition, the power of laser equipment can also be increased by improving the output power of semiconductor pump sources, such as by improving the electro-optical conversion efficiency of semiconductor chips, and by improving the gain effect of optical fibers, such as by improving the photo-optical conversion efficiency of optical fibers and other optical devices.

[0119] On the other hand, embodiments of this application also provide a battery that includes the aforementioned electrode assembly, and therefore, this battery incorporates all the technical effects of the aforementioned electrode assembly. Since the technical effects of the electrode assembly have already been described in detail above, they will not be repeated here.

[0120] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0121] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0122] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A handheld security laser, characterized in that, include: Rod-shaped main body, laser equipment; The stick-shaped body includes a gripping structure (1) and a striking structure (2) that are connected to each other. The laser device is disposed inside the holding structure (1), and the striking structure (2) is provided with a laser output port (3) at the end away from the holding structure (1). The laser device includes a laser optical path and a control circuit; the laser optical path includes a pump source (5), a high-reflectivity grating (6), a pulse stretcher (7), a wavelength division multiplexer (8), a collimator (9), and a diffuser (10) connected in sequence. The diffuser (10) is detachably installed at the laser output port (3). The laser optical path also includes a colored light source, which is connected to the wavelength division multiplexer (8). The control circuit includes a control drive circuit (16) and a power supply circuit. The control drive circuit (16) is connected to the pump source (5) and the colored light source, and the power supply circuit is connected to the control drive circuit (16).

2. The handheld security laser according to claim 1, characterized in that, The holding structure (1) is a metal tube (101), and the outer surface of the metal tube (101) is covered with an anti-slip layer; A handle collar (102) is provided in the middle of the metal tube (101), which divides the metal tube (101) into two parts, and the two parts are configured to be held by both hands.

3. The handheld security laser according to claim 2, characterized in that, The striking structure (2) is a metal cylinder (201), the diameter of which is larger than the diameter of the metal tube (101); A transition structure (202) is provided at the connection position between the metal cylinder (201) and the metal tube (101).

4. The handheld security laser according to claim 3, characterized in that, The outer surface of the metal cylinder (201) is provided with an array of papillae (203), and the papillae (203) are quadrangular pyramids.

5. The handheld security laser according to claim 1, characterized in that, The power supply circuit includes a battery (15), the charging port (4) of the battery (15) is disposed on the transition structure (202), the battery (15) is connected to the control drive circuit (16), and a first switch (12) is provided on the connected circuit. The first switch (12) is disposed at the end of the holding structure (1), and the first switch (12) is configured as the main switch of the laser device.

6. The handheld security laser according to claim 1, characterized in that, A second switch (13) is provided on the connection circuit between the control drive circuit (16) and the colored light source. The second switch (13) is configured to control the colored light source to turn on and output indicator light through the wavelength division multiplexer (8) and the collimator (9). The second switch (13) is disposed on the transition structure (202).

7. The handheld security laser according to claim 6, characterized in that, The diffuser (10) is mounted on the laser output port (3) via a magnetic suction structure. The second switch (13) is configured to send a strobe command to the control drive circuit (16) when double-clicked, the strobe command being used to trigger the control drive circuit (16) to send a square wave to the colored light source to control the colored light source to flash, and output a strobe flash through the wavelength division multiplexer (8) and the collimator (9).

8. The handheld security laser according to claim 6, characterized in that, The colored light source is a green laser diode (11), and the collimator (9) is an achromatic collimator.

9. The handheld security laser according to claim 1, characterized in that, A third switch (14) is provided on the connection circuit between the control drive circuit (16) and the pump source (5). The third switch (14) is configured to control the pump source (5) to open and output laser through the high-reflectivity grating (6), pulse stretcher (7), wavelength division multiplexer (8) and collimator (9). The high-reflectivity grating (6) is connected to the pulse stretcher (7) via an active optical fiber (17); The third switch (14) is located on the transition structure (202) near the second switch (13).

10. The handheld security laser according to any one of claims 1 to 9, characterized in that, The laser output by the laser device is infrared light, the power of the laser device is not less than 20W, the radial dimension of the holding structure (1) is not more than 40mm, and the radial dimension of the striking structure (2) is not more than 50mm.

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