Stripe laser scanning module and searchlight

Abstract

The invention discloses a stripe laser scanning module. The stripe laser scanning module at least comprises a laser emitter emitting point laser; one end of the metal sleeve is sleeved on the laser transmitter, and the other end of the metal sleeve is movably connected with the protective cover and embedded in the protective cover; the lens group is arranged at one end, far away from the metal sleeve, of the protective cover, and the length of the metal sleeve embedded in the protective cover is changed by adjusting the protective cover. The lens group converts the point laser into line laser, and further scans the surface of an object to form stripe laser. The features such as the stripe shape, spacing and phase of the stripe laser can be correspondingly changed along with the geometrical shape and height change of the surface of the object, so that a smoke flowing view is formed, the outline is quickly defined, and holes and objects in the space are positioned, so that rescue workers can quickly master the current condition. When the surface of an object changes or the distance between a rescue worker and the object changes, the length of the metal sleeve embedded in the protection cover is changed by rapidly adjusting the protection cover, and a new object surface condition is formed.

Description

Technical Field

[0001] The present disclosure relates to the field of smoke detection devices, and in particular to a stripe laser scanning module and a searchlight. Background Art

[0002] Currently, smoke detection technology, a product of advancements in fire prevention and control technologies, has become a key early warning tool in the field of fire warning. Common portable smoke detection devices typically rely on a single detection mechanism, such as using optical scattering to measure the concentration of smoke particles or using electrochemical sensors to detect specific gas components.

[0003] Photoelectric smoke sensors primarily operate based on the principle of infrared light scattering. In the sensor's darkroom, smoke particles scatter infrared light, causing the intensity of light received by the infrared receiver to decrease, triggering an alarm signal. When smoke concentration reaches a certain threshold, the sensor immediately issues an alarm.

[0004] However, in real-world fire rescue environments, firefighters require smoke detection equipment that can quickly and in real time identify smoke characteristics. Given that rescuers may be constantly on the move during the rescue process, and given the dynamic nature of the fire scene, the equipment must be able to perform multiple, rapid, real-time detections based on fluctuations in smoke concentration or changes in the distance between the rescuer and the fire. Furthermore, given the complexity of the fire scene, the equipment carried by firefighters must be lightweight, flexible, reliable, and easy to install. Summary of the Invention

[0005] In view of this, the embodiment of the present disclosure provides a stripe laser scanning module for scanning the surface of an object with uneven concentration distribution and forming stripe laser on the surface of the object. The stripe laser scanning module at least includes: a terminal, a laser emitter, a metal sleeve, and a protective cover, wherein:

[0006] Laser transmitter, emitting point laser of specific wavelength;

[0007] A wiring terminal, one end of which is electrically connected to one end of the laser emitter, and the other end of which is connected to a lead;

[0008] A metal sleeve, one end of the metal sleeve is sleeved on the other end of the laser emitter, and the other end of the metal sleeve is movably connected to the protective cover and embedded in the protective cover. The protective cover is adjusted to change the length of the metal sleeve embedded in the protective cover;

[0009] The protective cover has a lens group at one end away from the metal sleeve. The lens group includes at least a line lens. The lens group converts the point laser into a line laser, and the line laser forms a stripe laser on the surface of the object.

[0010] In some embodiments, the lens assembly includes a convex lens, a straight lens and a lens fixing member. The lens fixing member is sleeved outside the convex lens and fixed to the inner wall of the protective cover, and fixes the straight lens in the protective cover. The convex lens is closer to the metal sleeve than the straight lens.

[0011] In some embodiments, a spring is further included, which is disposed in the metal sleeve, one end of the spring contacts the laser emitter, and the other end of the spring contacts the lens group.

[0012] In some embodiments, the lens fixing member fixes the light source of the laser emitter on the main optical axis of the convex lens, and the main optical axis of the straight lens coincides with the main optical axis of the convex lens.

[0013] In some embodiments, the wavelength of the spot laser emitted by the laser emitter is in the range of 400 nm to 500 nm.

[0014] In some embodiments, the other end of the metal sleeve is threadedly connected to the protective cover, the outer wall of the other end of the metal sleeve is provided with threads, and the inner wall of the protective cover is provided with threads.

[0015] In some embodiments, the other end of the metal sleeve is snap-connected to the protective cover, the outer wall of the other end of the metal sleeve is provided with multiple inner protrusions, and the inner wall of the protective cover is provided with grooves that cooperate with the protrusions.

[0016] In some embodiments, the protective cover is metal.

[0017] An embodiment of the present disclosure provides a searchlight, which is portable or chest-mounted and includes a stripe laser scanning module as described above. The stripe laser scanning module is fixed to the placement or access light panel of the searchlight.

[0018] In some embodiments, a thread is provided on the outer wall of the metal sleeve of the stripe laser scanning module near the terminal, and the thread is connected to the light board, and the power supply plug connected to the other end of the lead is connected to the power supply of the searchlight.

[0019] An embodiment of the present disclosure provides a drone, including a stripe laser scanning module as described above. The stripe laser scanning module is fixed to the body of the drone so that one end of the protective cover provided with a lens group faces the ground.

[0020] The stripe laser scanning module provided in the embodiments of the present application is used to scan the surface of an object with uneven concentration distribution. It at least includes: a laser emitter for emitting a point laser of a specific wavelength, a metal sleeve at one end being sleeved on one end of the laser emitter, and the other end of the metal sleeve being movably connected to and embedded in a protective cover. Adjusting the protective cover can change the length of the metal sleeve embedded in the protective cover. A lens group is disposed at the end of the protective cover away from the metal sleeve. The lens group converts the point laser into a line laser. The line laser forms a stripe laser on the surface of the object. The stripe shape, spacing, phase, and other characteristics of the stripe laser change with the geometry, height, and concentration of the surface of the object (such as smoke), thereby forming a good view of the smoke flow, quickly defining the contour, and locating holes and objects in space, so that rescuers can quickly understand the current situation. When the surface of the object changes or the distance between the rescuer and the object changes, by quickly adjusting the protective cover and changing the length of the metal sleeve embedded in the protective cover, a new real-time surface situation of the object can be formed, so that rescuers can make quick adjustments. In addition, the stripe laser scanning module's external protective cover is small and lightweight and can be installed on rescue equipment such as portable searchlights, flashlights, fire chest-mounted searchlights or drones, making it practical, flexible and versatile. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Exploded diagram of the stripe laser scanning module provided for some examples;

[0022] Figure 2 A schematic cross-sectional view of a stripe laser scanning module is provided for some examples;

[0023] Figure 3 Simulation results of the stripe laser scanning module provided for some examples. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the embodiments of the present disclosure and the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0025] In the drawings, the sizes of layers, regions, elements and their relative sizes may be exaggerated for clarity. Like reference numerals denote like elements throughout.

[0026] It should be understood that when an element or layer is referred to as being “on,” “adjacent,” “connected to,” or “coupled to” another element or layer, it can be directly on, adjacent, connected, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly adjacent to,” “directly connected to,” or “directly coupled to” another element or layer, there are no intervening elements or layers present.

[0027] In order to fully understand the present disclosure, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present disclosure. The preferred embodiments of the present disclosure are described in detail below. However, in addition to these detailed descriptions, the present disclosure may also have other implementation methods.

[0028] Figure 1 Exploded diagram of the stripe laser scanning module provided for some examples. Figure 2 Schematic cross-sectional view of a stripe laser scanning module for some examples. Figure 3 The simulation effect diagram of the stripe laser scanning module provided for some examples will be combined with Figure 1-3 The stripe laser scanning module and the working process of the present application are exemplarily described.

[0029] like Figure 1 The stripe laser scanning module is used to scan the surface of an object with uneven concentration distribution and form stripe laser on the surface of the object. It at least includes: a terminal 8, a laser emitter 7, a metal sleeve 1, and a protective cover 2, wherein the laser emitter 7 is used to emit a point laser of a specific wavelength;

[0030] A connection terminal 8, one end of the connection terminal 8 is electrically connected to one end of the laser emitter 7, and the other end of the connection terminal 8 is connected to the lead 9;

[0031] A metal sleeve 1, one end of which is sleeved on the other end of the laser emitter 7, and the other end of the metal sleeve 1 is movably connected to the protective cover 2 and embedded in the protective cover 2. The protective cover 2 is adjusted to change the length of the metal sleeve 1 embedded in the protective cover 2;

[0032] The protective cover 2 has a lens group 10 at one end away from the metal sleeve 1. The lens group 10 includes at least a line lens. The lens group 10 converts the point laser into a line laser, and the line laser forms a stripe laser on the surface of the object.

[0033] In actual practice, the other end of the lead 9 is provided with a power supply plug to connect the power supply to the stripe laser scanning module. The connection terminal 8 and the surface of the metal sleeve 1 are reinforced with hot melt adhesive.

[0034] In the embodiments of the present application, when a line laser is applied to an object's surface, a striped laser is formed due to the uneven concentration distribution on the object's surface. The stripe shape, spacing, phase, and other characteristics of the striped laser will change with the geometric shape, height, and concentration of the object's surface (e.g., smoke), thereby forming a good smoke flow view, quickly defining contours, and locating holes and objects in space, so that rescuers can quickly understand the current situation. When the surface of the object changes or the distance between the rescuer and the object changes, by quickly adjusting the protective cover and changing the length of the metal sleeve embedded in the protective cover, a new real-time surface condition of the object can be formed, allowing rescuers to make quick adjustments.

[0035] In some embodiments, the surface of an object with uneven concentration distribution refers to a solid mixture of gas, liquid, and tiny particles formed in a certain space under extreme conditions, including but not limited to smoke, steam (such as water vapor), haze, sandstorms, dust raised by tornadoes, and other particulate matter, etc.

[0036] In some embodiments, reference Figure 2 The lens assembly 10 may include a convex lens 5, a straight lens 6, and a lens fixing member 3, wherein the lens fixing member 3 is mounted outside the convex lens 5 and fixed to the inner wall of the protective cover 2, and fixes the straight lens 6 inside the protective cover 2. The convex lens 5 is closer to the metal sleeve 1 than the straight lens 6. Figure 1 and 2 As shown, the cross-sectional orthographic projections of the convex lens 5, the straight lens 6, the terminal 8, and the laser emitter 7 are all circular. In order to accommodate, fix, or set the convex lens 5, the straight lens 6, and the laser emitter 7 in front, the cross-sectional orthographic projections of the corresponding metal sleeve 1, the protective cover 2, and the lens fixing part 3 are all circular rings.

[0037] Further, if Figure 2 As shown, a straight lens 6 is fixed between the lens holder 3 and the end of the protective cover 2 away from the metal sleeve 1. In the direction away from the metal sleeve 1, the distance between the surface of the lens holder 3 and the surface of the protective cover 2 is equal to the thickness of the straight lens 6. The convex lens 5 is built into the end of the lens holder 3 away from the metal sleeve 1 and can move slightly within the lens holder under the action of external force. The surface of the convex lens 5 does not contact the surface of the straight lens 6.

[0038] In some embodiments, the lens fixing member 3 fixes the light source of the laser emitter 7 on the main optical axis of the convex lens 5 , and the main optical axis of the straight lens 6 coincides with the main optical axis of the convex lens 5 .

[0039] It is easy to understand that in the embodiment of the present application, in order to better fix the lens assembly 10, the inner ring diameter of the protective cover 2 is approximately equal to the outer ring diameter of the lens fixing member 3, and the inner ring diameter of the lens fixing member 3 is approximately equal to the outer diameter of the convex lens 5. In order to better fix the straight lens 6, the inner ring diameter of the protective cover 2 is approximately equal to the outer diameter of the straight lens 6.

[0040] In the embodiment of the present application, the degree of the straight lens 6 can be 5 degrees, 15 degrees, 20 degrees, 36.5 degrees, 45 degrees, 58 degrees, 88 degrees, 110 degrees, 120 degrees, etc. The larger the degree, the longer the line.

[0041] In other implementations, the lens assembly 10 may include only one straight lens 6 and one lens fixing component 3 , or may include two or more convex lenses 5 , one straight lens 6 and one lens fixing component 3 .

[0042] In the present application, the metal sleeve 1 and the protective cover 2 are movably connected by threads or buckles. In some embodiments, the other end of the metal sleeve 1 can be threadedly connected to the protective cover 2, the outer wall of the other end of the metal sleeve 1 is provided with threads, and the inner wall of the protective cover 2 is provided with threads. Figure 2 As shown, the inner wall thread of the protective cover 2 is provided on the inner wall of the lens fixing member 3. In other implementations, when the lens fixing member 3 is shorter, the inner wall of the protective cover 2 may also be provided with threads directly.

[0043] In some embodiments, the other end of the metal sleeve 1 is snap-connected to the protective cover 2. The outer wall of the other end of the metal sleeve 1 is provided with multiple internal protrusions (not shown), and the inner wall of the protective cover 2 is provided with grooves (not shown) that mate with the protrusions. Similarly, the grooves can be provided on the inner wall of the protective cover 2 or on the inner wall of the lens holder 3. It will be readily understood that the multiple internal protrusions provided on the outer wall of the other end of the metal sleeve 1 can be evenly or unevenly distributed.

[0044] like Figure 2 As shown, the cross-section of the metal sleeve 1 is "T"-shaped and hollow, with one end larger and the other smaller. In the embodiment of the present application, the relatively large end of the metal sleeve 1 is sleeved onto the non-pin end of the laser emitter 7, with the shape of the hollow inner wall completely conforming to the shape of the non-pin end of the laser emitter 7. The relatively small end of the metal sleeve 1 is movably connected to the protective cover 2 and embedded within the protective cover 2. As can be easily understood, for aesthetic reasons and subsequent practical convenience, the maximum outer diameter of the metal sleeve 1 is approximately equal to the maximum outer diameter of the protective cover 2.

[0045] In some embodiments, the stripe laser scanning module may further include a spring 4, which is disposed in the metal sleeve 1, one end of the spring 4 being in contact with the laser emitter 7, and the other end of the spring 4 being in contact with the lens group 10. Figure 2As shown, one end of the spring 4 contacts the laser emitter 7, and the other end of the spring 4 contacts the convex lens 5. When the degree of the lens group 10 cannot be changed, when it is necessary to change the line length of the line laser emitted by the stripe laser scanning module, the operator can reduce or increase the length of the metal sleeve 1 embedded in the protective cover 2 through the protective cover 2, thereby changing the distance between the light source of the laser emitter 7 and the lens group 10 (mainly the convex lens 5). At the same time, the spring 4 will extend or compress accordingly, thereby slightly changing the distance between the convex lens 5 and the straight lens 6, thereby adjusting the line length of the line laser emitted by the stripe laser scanning module.

[0046] In the embodiment of the present disclosure, when the surface of the object changes or the distance between the rescuer and the object changes, the protective cover can be quickly adjusted to change the length of the metal sleeve embedded in the protective cover, thereby forming a new real-time surface condition of the object, for example Figure 3 A view of the smoke flow is shown so rescuers can make quick adjustments.

[0047] In some embodiments, the wavelength of the point laser emitted by the laser emitter 7 is in the range of 400 nm to 500 nm. Preferably, it can be 405 nm, 415 nm, 435 nm, 445 nm, 450 nm, 473 nm, 488 nm or 492 nm. This wavelength range is mainly dominated by blue laser.

[0048] In some embodiments, the protective cover 2 can be made of metal, such as copper, aluminum, or an alloy of the two. The metal sleeve 1 can be made of copper. Because the relatively large end of the metal sleeve 1 is positioned over the non-pin end of the laser emitter 7 and copper, a material with good heat dissipation properties, quickly dissipates heat from the laser emitter 7, thereby improving the reliability of the stripe laser scanning module. Furthermore, the metal protective cover 2 further increases the heat dissipation area, accelerating heat dissipation and enhancing reliability.

[0049] An embodiment of the present disclosure provides a searchlight, which can be portable or chest-mounted, and includes the stripe laser scanning module as described above (not described again here), which is fixed at the location where the searchlight is connected or where a light board is set.

[0050] In an embodiment of the present application, a thread is provided on the outer wall of the metal sleeve 1 of the stripe laser scanning module near the terminal 8 (the relatively larger end), and the thread can be connected to the access light board of the searchlight, and at the same time, the power access plug of the lead 9 is connected to the power supply of the searchlight to complete the installation.

[0051] The embodiment of the present disclosure also provides a drone, including the stripe laser scanning module as described above (no further details will be given here), the stripe laser scanning module is fixed to the fuselage of the drone, so that the end of the protective cover with the lens group is facing the ground, and at the same time, the power supply plug of the lead 9 is connected to the power supply to complete the installation.

[0052] In the disclosed embodiment, a stripe laser scanning module is used to scan the surface of an object with an uneven concentration distribution. The module comprises at least: a laser emitter for emitting a point laser of a specific wavelength; a metal sleeve at one end being mounted on one end of the laser emitter; and the other end of the metal sleeve being movably connected to and embedded in a protective cover. Adjustment of the protective cover can change the length of the metal sleeve embedded in the protective cover. A lens assembly is disposed within the end of the protective cover away from the metal sleeve. The lens assembly converts the point laser into a line laser, which forms a stripe laser on the surface of the object. The stripe shape, spacing, phase, and other characteristics of the stripe laser change with the geometry and height of the surface of the object (e.g., smoke), thereby forming a good view of the smoke flow, quickly defining contours, and locating holes and objects in space, allowing rescuers to quickly understand the current situation. When the surface of the object changes or the distance between the rescuer and the object changes, by quickly adjusting the protective cover and changing the length of the metal sleeve embedded in the protective cover, a new real-time surface condition of the object can be formed, allowing rescuers to make quick adjustments. In addition, the stripe laser scanning module's external protective cover is small and lightweight and can be installed on rescue equipment such as portable searchlights, flashlights, fire chest-mounted searchlights or drones, making it practical, flexible and versatile.

[0053] It should be understood that references throughout this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic associated with the embodiment is included in at least one embodiment of the present disclosure. Therefore, the appearance of "in one embodiment" or "in an embodiment" throughout this specification does not necessarily refer to the same embodiment. The serial numbers of the embodiments of the present disclosure are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0054] The above description is only a preferred embodiment of the present disclosure and does not limit the patent scope of the present disclosure. All equivalent structural transformations made by using the contents of the present disclosure and the drawings under the inventive concept of the present disclosure, or direct / indirect application in other related technical fields are included in the patent protection scope of the present disclosure.

Claims

1. A stripe laser scanning module for scanning the surface of an object with uneven concentration distribution and forming stripe lasers on the surface of the object, characterized in that: The stripe laser scanning module at least includes: a terminal, a laser emitter, a metal sleeve, and a protective cover, wherein: Laser transmitter, emitting point laser of specific wavelength; a connection terminal, one end of which is electrically connected to one end of the laser emitter, and the other end of which is connected to a lead; a metal sleeve, one end of the metal sleeve being sleeved on the other end of the laser emitter, the other end of the metal sleeve being movably connected to a protective cover and embedded in the protective cover, and the protective cover being adjusted to change the length of the metal sleeve embedded in the protective cover; The protective cover has a lens group at one end away from the metal sleeve, and the lens group includes at least a line lens. The lens group converts the point laser into a line laser, and the line laser forms the stripe laser on the surface of the object.

2. The stripe laser scanning module according to claim 1, characterized in that: The lens group includes a convex lens, a straight lens and a lens fixing part. The lens fixing part is sleeved outside the convex lens and fixed to the inner wall of the protective cover, and fixes the straight lens in the protective cover. The convex lens is closer to the metal sleeve than the straight lens.

3. The stripe laser scanning module according to claim 1 or 2, characterized in that: It also includes a spring, which is arranged in the metal sleeve, one end of the spring is in contact with the laser emitter, and the other end of the spring is in contact with the lens group.

4. The stripe laser scanning module according to claim 2, characterized in that: The lens fixing member fixes the light source of the laser emitter on the main optical axis of the convex lens, and the main optical axis of the straight lens coincides with the main optical axis of the convex lens.

5. The stripe laser scanning module according to claim 1, characterized in that: The wavelength range of the point laser emitted by the laser emitter is 400nm-500nm.

6. The stripe laser scanning module according to claim 1, characterized in that: The other end of the metal sleeve is threadedly connected to the protective cover. The outer wall of the other end of the metal sleeve is provided with a thread, and the inner wall of the protective cover is provided with a thread.

7. The stripe laser scanning module according to claim 1, characterized in that: The other end of the metal sleeve is snap-connected to the protective cover. The outer wall of the other end of the metal sleeve is provided with multiple inner protrusions, and the inner wall of the protective cover is provided with grooves that match the protrusions.

8. The stripe laser scanning module according to claim 1, characterized in that: The protective cover is made of metal.

9. A searchlight, which is portable or chest-mounted, characterized in that: It comprises the stripe laser scanning module according to any one of claims 1 to 8, and the stripe laser scanning module is fixed at the access light board of the searchlight.

10. The searchlight according to claim 9, wherein a thread is provided on the outer wall of the metal sleeve of the stripe laser scanning module near the terminal, the thread is connected to the light board, and the power supply plug connected to the other end of the lead is connected to the power supply of the searchlight.

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