CN119758552B - Automatic optical protection device and laser emission device - Google Patents

Abstract

This invention relates to the field of optical device protection technology, and particularly to an automatic optical protection device and a laser emitting device. The optical protection device of this invention includes a protection head and a trigger assembly. The protection head includes a protection head housing and a protection assembly. The protection assembly includes a protection assembly body, an elastic element, and a cover. The protection head housing has a receiving cavity for accommodating the optical output head, and an optical path channel is formed along the optical path direction of the receiving cavity. The protection assembly is located at the end of the optical path channel away from the optical output head. The protection assembly body has a mounting area and a light-transmitting hole. The cover includes a cover portion, a connecting portion, and a trigger portion. The cover portion is located at the end of the protection assembly body away from the protection head housing. The connecting portion is located on the side of the cover portion near the mounting area. The trigger portion is located on the connecting portion or the cover portion. The elastic element is located between the connecting portion and the protection assembly body. This invention solves the problem of the optical output head not being automatically protected.

Description

Automatic optical protection device and laser emitting device

[Technical Field]

This invention relates to the field of optical device protection technology, and in particular to an automatic optical protection device and a laser emitting device.

[Background Technology]

Lasers or other light-emitting devices typically need to be used with matching lenses or other optical devices, and may require switching between them. During this switching process, the output head of the laser or other light-emitting device is exposed to the outside environment, allowing dust to come into contact with sensitive parts such as optical lenses. For example, commonly used laser output heads include QBH (Quartz Block Head) or QCS (Quartz Collimator System), both of which have lenses or quartz crystals on their front end. When the laser needs to be adapted to different lenses or other optical devices, the output head end face is exposed to the outside environment during the removal process, and the crystal or lens on its end face is prone to accumulating dust. If light is emitted under these conditions, the output head can easily be burned out.

[Summary of the Invention]

To address the problem of the optical output head not being able to automatically protect itself, this invention provides an automatic optical protection device and a laser emitting device.

To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic optical protection device for adapting to different lenses or optical devices, characterized in that: the optical protection device includes a protection head and a triggering component; the protection head includes a protection head housing and a protection component;

The protective component includes a protective component body, an elastic element, and a cover. The protective head housing has a receiving cavity for accommodating the optical output head, with an optical path channel extending through the cavity. The protective component is positioned at the end of the optical path channel furthest from the optical output head. The protective component body has a mounting area and a light-transmitting hole, which communicates with the optical path channel within the protective head housing. The cover includes a cover portion, a connecting portion, and a trigger portion. The cover portion is positioned at the end of the protective component body furthest from the protective head housing. The connecting portion is positioned on the side of the cover portion closest to the mounting area. A trigger portion is positioned on the connecting portion or the cover portion. The elastic element is positioned between the connecting portion and the protective component body, and it drives the connecting portion and the cover portion to move relative to the protective head housing, thereby closing the light-transmitting hole.

The lens or optical device has a hollow channel with an opening, and the trigger component is disposed in the hollow channel. When the end of the protective head away from the optical output head passes through the opening and is detachably connected to the lens or optical device, the end of the trigger component near the protective component can cooperate with the trigger part to drive the cover part to move away from the light-transmitting hole.

Preferably, the protective component includes a mounting sleeve that is fitted onto the protective component to cover the mounting area.

Preferably, the triggering component includes a fixing member and a triggering member. The fixing member is disposed within the hollow channel, and an avoidance channel is provided on the fixing member corresponding to the optical path channel. The triggering member is disposed on the side of the fixing member close to the protection component.

Preferably, the trigger portion forms a non-perpendicular angle with the axial direction of the optical path channel; when the protective head is connected to the lens or optical device, the trigger member is slidably connected to the trigger portion, and drives the covering portion to gradually move away from the light-transmitting hole so that the optical path channel and the hollow channel are connected.

Preferably, the number of the covering element is at least one, the protective component body is provided with an elastic element connection position, the connecting part is provided with a limiting post on the side near the protective component body, one end of the elastic element passes through the limiting post and connects to the connecting part, and the other end passes through the elastic element connection position and connects to the protective component body, the elastic element is used to provide a pushing force or a pulling force to make the covering element close the light-transmitting hole.

Preferably, there are two cover members, and the covering parts of both cover members are disposed at the end of the protective component body away from the protective head housing. An elastic member is disposed between the connecting part of one cover member and the connecting part of the other cover member. The elastic member is used to provide tension so that the cover member closes the light-transmitting hole.

Preferably, the installation area includes a groove wall surface perpendicular to the end face of the protective head housing and a groove bottom surface parallel to the end face of the protective head housing. The protective assembly further includes an elastic connector. A first fixing post is provided at one end of the groove wall surface near the groove bottom surface, and a second fixing post is provided at one end of the connecting part near the groove bottom surface. One end of the elastic connector is connected to the first fixing post, and the other end is connected to the second fixing post.

Preferably, the connecting part is provided with a sliding groove on the side near the installation area, and the installation area is provided with a snap-fit sliding rail corresponding to the sliding groove. The snap-fit sliding rail cooperates with the sliding groove so that the connecting part can drive the covering part to move along the snap-fit sliding rail.

Preferably, the mounting sleeve has a first clearance channel corresponding to the optical path channel and a second clearance channel corresponding to the trigger, and the trigger passes through the second clearance channel and is slidably connected to the trigger part.

To solve the above-mentioned technical problems, the present invention provides another technical solution as follows: a laser emitting device, comprising a laser generator, a lens or optical device, and the aforementioned automatic optical protection device, wherein the automatic optical protection device comprises an optical output head and a protective head, one end of the optical output head is connected to the laser generator, and the other end is connected to the protective head, a hollow channel with an opening is formed on the lens or optical device, and a snap-fit structure is provided at the end of the protective head away from the protective component, and a mating structure that cooperates with the snap-fit structure is provided on the lens or optical device, wherein when the covering part is away from the light-transmitting hole, the snap-fit structure can be snap-fitted to the outer surface of the lens or optical device or the mating structure.

Compared with the prior art, the automatic optical protection device and laser emitting device provided by the present invention have the following beneficial effects:

This invention provides an automatic optical protection device for adapting to different lenses or optical devices. The optical protection device includes a protection head and a triggering component; the protection head includes a protection head housing and a protection component.

The protective assembly includes a protective assembly body, an elastic element, and a cover. The protective head housing has a receiving cavity for accommodating the optical output head, with an optical path channel formed through the cavity. The protective assembly is located at the end of the optical path channel furthest from the optical output head. The protective assembly body has a mounting area and a light-transmitting hole, which communicates with the optical path channel within the protective head housing. The cover includes a cover portion, a connecting portion, and a trigger portion. The cover portion is located at the end of the protective assembly body furthest from the protective head housing, and the connecting portion is located on the side of the cover portion closest to the mounting area. A trigger portion is located on the connecting portion or the cover portion. The elastic element is located between the connecting portion and the protective assembly body, and it drives the connecting portion and the cover portion to move relative to the protective head housing, thereby closing the light-transmitting hole.

A hollow channel with an opening is formed on the lens or optical device, and a trigger component is disposed within the hollow channel. When the end of the protective head away from the optical output head passes through the opening and is detachably connected to the lens or optical device, the end of the trigger component near the protective component can cooperate with the triggering part to drive the cover part to move away from the light-transmitting hole. This automatic optical protection device can be well adapted to lenses or optical devices in various fields, including laser obstacle removal, laser cutting, and laser welding, and can also protect the fiber optic interface inside the optical path channel.

This invention also provides a laser emitting device, which has the same beneficial effects as the above-described automatic optical protection device, and will not be described in detail here.

[Attached Image Description]

Figure 1 is an exploded view of a portion of the optical protection device provided in the first embodiment of the present invention.

Figure 2 is an enlarged view of a portion of Figure 1.

Figure 3 is a schematic diagram of the cooperation between the optical protection device and the lens or optical device provided by the present invention.

Figure 4 is a schematic diagram of the mounting sleeve of the optical protection device provided in the first embodiment of the present invention.

Figure 5 is a schematic diagram of the trigger component of the optical protection device provided in the first embodiment of the present invention.

Figure 6 is a schematic diagram of the structure of the cover of the optical protection device provided in the first embodiment of the present invention.

Figure 7 is a top view of an optical protection device provided in the first embodiment of the present invention.

Figure 8a is a top view of another optical protection device provided in the first embodiment of the present invention.

Figure 8b is a schematic diagram of the structure of Figure 8a.

Figure 9a is a top view of another optical protection device provided in the first embodiment of the present invention.

Figure 9b is a schematic diagram of the structure of Figure 9a.

Figure 10 is an enlarged view of a portion of Figure 9b.

Explanation of reference numerals in the attached diagram:

10. Optical protection device; 20. Lens or optical device;

1. Optical output head; 2. Protective head; 3. Trigger assembly;

21. Protective head housing; 22. Protective components; 31. Fixing element; 32. Triggering element;

201. Hollow channel; 202. Opening; 211. Optical path channel; 212. Light transmission hole; 213. Installation area; 214. Protective component body; 215. First fixing post; 216. Snap-fit slide rail; 221. Elastic element; 222. Covering element; 223. Mounting sleeve; 224. Elastic connector; 311. Clearance channel;

2131. Groove wall surface; 2132. Groove bottom surface; 2141. Elastic element connection position; 2221. Covering part; 2222. Connecting part; 2223. Triggering part; 2224. Limiting post; 2225. Second fixing post; 2226. Slide groove; 2231. First clearance channel; 2232. Second clearance channel.

【Detailed Implementation Methods】

To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

In the embodiments provided by this invention, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B solely based on A; B can also be determined based on A and/or other information.

It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also recognize that the embodiments described in the specification are optional embodiments, and the actions and modules involved are not necessarily essential to the invention.

In various embodiments of the present invention, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It is particularly important to note that each block in a block diagram and/or flowchart, and combinations of blocks in block diagrams and/or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

Lasers or other light-emitting devices typically need to be used with matching lenses or other optical devices, and may require switching between them. During this switching process, the output head of the laser or other light-emitting device is exposed to the outside environment, allowing dust to come into contact with sensitive parts such as optical lenses. For example, commonly used laser output heads include QBH (Quartz Block Head) or QCS (Quartz Collimator System), both of which have lenses or quartz crystals on their front end. When the laser needs to be adapted to different lenses or other optical devices, the output head end face is exposed to the outside environment during the removal process, and the crystal or lens on its end face is prone to accumulating dust. If light is emitted under these conditions, the output head can easily be burned out.

Referring to Figures 1 to 3, the first embodiment of the present invention provides an automatic optical protection device 10 for adapting to different lenses or optical devices 20. The optical protection device 10 includes a protection head 2 and a triggering component 3. The protection head 2 includes a protection head housing 21 and a protection component 22.

The protective component 22 includes a protective component body 214, an elastic element 221, and a cover 222. The protective head housing 21 has a receiving cavity for accommodating the optical output head 1. An optical path channel 211 is formed by passing through the optical path direction of the receiving cavity. The protective component 22 is disposed at the end of the optical path channel 211 away from the optical output head 1. The protective component body 214 has a mounting area 213 and a light-transmitting hole 212. The light-transmitting hole 212 communicates with the optical path channel 211 in the protective head housing 21. The cover 222 includes a cover portion 2221, a connecting portion 2222, and a trigger portion 2223. The cover portion 2221 is disposed at the end of the protective component body 214 away from the protective head housing 21. The connecting portion 2222 is disposed on the side of the cover portion 2221 near the mounting area 213. The trigger portion 2223 is disposed on the connecting portion 2222 or the cover portion 2221. It should be noted that the trigger part 2223 can be disposed on the connecting part 2222 or on the covering part 2221, and can be a protruding structure or a recessed structure, the specific shape of which depends on the trigger component 3. For example, as shown in FIG2, the end of the connecting part 2222 near the light-transmitting hole 212 is recessed towards the mounting area 213 to form the trigger part 2223; the elastic member 221 is disposed between the connecting part 2222 and the protective component body 214, and the elastic member 221 drives the connecting part 2222 and the covering part 2221 to move relative to the protective head housing 21, so that the covering member 222 closes the light-transmitting hole 212;

A hollow channel 201 with an opening 202 is provided on the lens or optical device 20. The trigger component 3 is disposed in the hollow channel 201. When the end of the protective head 2 away from the optical output head 1 passes through the opening 202 and is detachably connected to the lens or optical device 20, the end of the trigger component 3 near the protective component 22 can cooperate with the trigger part 2223 to drive the cover part 2221 to move away from the light-transmitting hole 212.

Understandably, in this embodiment, the end of the receiving cavity furthest from the protective component can be connected to the optical device that needs protection, and the end of the optical output head 1 closest to the protective component 22, i.e., the output end of the optical output head 1 is a fiber optic connector. It should be understood that the automatic optical protection device 10 provided in this embodiment can automatically protect the fiber optic connector on the optical output head 1. Specifically, the optical path channel 211 inside the protective head housing 21 is used to accommodate the fiber optic connector for laser transmission, while the elastic element 221 provides a restoring force. When the protective head 2 and the lens or optical device 20 are not connected, the elastic element 221 disposed between the connecting part 2222 and the protective component body 214 provides a force, forcing the covering part 2221 to cover the light-transmitting hole 212 that connects the optical path channel 211 to the outside. Therefore, at this time, the fiber optic connector is protected by the covering part 2221 and is not exposed to the outside of the protective head housing 21. It should be noted that the elastic element 221 is not limited to a spring, a torsion spring, etc.

Furthermore, the trigger component 3 provided in this embodiment is fixed inside the hollow channel 201 of the lens or optical device 20. Optionally, the trigger component 3 can be detachably connected to the inner wall of the hollow channel 201, or it can be integrally formed with the inner wall of the hollow channel 201. It should be understood that the trigger component 3 can be adapted to different types of lenses or optical devices 20. When the end of the protective head 2 away from the optical output head 1 passes through the opening 202 and connects to the lens or optical device 20, the installation of the protective head 2 and the lens or optical device 20 is completed. At this time, the end of the trigger component 3 near the protective component 22 contacts the trigger part 2223 and drives the connecting part 2222 to move. After the connecting part 2222 moves, it drives the covering part 2221 to move together, so that the light-transmitting hole 212 that connects the optical path channel 211 to the outside is exposed, and the movement of the connecting part 2222 causes the elastic member 221 to be compressed or stretched. Furthermore, after the laser is emitted from the fiber optic interface, the laser can first pass through the optical path channel 211 and then enter the hollow channel 201. At this time, the optical protection device 10 can complete the laser transmission.

It should be noted that the protective component body 214 can be a part that is machined and extended from the protective head housing 21, or it can be a part that is separately assembled and installed on the protective head housing.

Furthermore, after the optical protection device 10 completes the laser transmission, the user can disconnect the protective head 2 from the lens or optical device 20. At this time, the end of the trigger component 3 near the protection component 22 is released from contact with the trigger part 2223. Specifically, in one embodiment, the elastic member 221 disposed between the connecting part 2222 and the protective component body 214 returns from a stretched state to a normal state. The elastic member 221 provides a restoring force, which forces the connecting part 2222 to move. After the connecting part 2222 moves, it drives the covering part 2221 to move together, so that the light-transmitting hole 212 that connects the optical path channel 211 to the outside is blocked by the covering part 2221. Therefore, at the instant the end of the trigger component 3 near the protection component 22 is released from contact with the trigger part 2223, the covering part 2221 can immediately close the light-transmitting hole 212 under the action of the elastic restoring force of the elastic member 221, preventing the optical path channel 211 from connecting with the outside, thereby protecting the optical interface.

It should be understood that the optical protection device 10 provided in this embodiment can be applied to different lenses or optical devices 20. Specifically, lenses or optical devices 20 typically have a hollow channel 201 inside. The function of the hollow channel 201 is to allow laser light to pass through, and a lens group is provided inside the hollow channel 201. When the laser light is output from the fiber optic interface, it can be transmitted to the hollow channel 201 through the optical path channel 211, and then focused and emitted after passing through the lens group inside the hollow channel 201. The trigger component 3 in this embodiment can be installed inside the hollow channel 201, and the protective head housing 21 can be adapted to lenses or optical devices 20 in any field, having wide adaptability. When the protective head housing 21 is connected to the lens or optical device 20, the trigger component 3 can cooperate with the connecting part 2222 to drive the cover part 2221 to move and connect the optical path channel 211 and the hollow channel 201, thereby enabling the automatic optical protection device 10 to complete the laser transmission work. Furthermore, when the triggering device can be disengaged from the connecting part 2222, the covering part 2221 can immediately seal the light-transmitting hole 212, preventing the optical path channel 211 from communicating with the outside world, thereby protecting the fiber optic interface. Therefore, the automatic optical protection device 10 can be well adapted to lenses or optical devices 20 in different fields, whether applied to laser obstacle removal, laser cutting, laser welding, etc., and can also protect the fiber optic interface in the optical path channel 211.

It should be noted that the light-transmitting aperture of existing optical output heads is generally close to the lens or optical element inside the lens. To enable the automatic optical protection device 10 provided in this embodiment to be compatible with different lenses or optical devices, the thickness of the covering portion 2221 covering the light-transmitting aperture 212 is relatively thin in this embodiment, and the distance between the fiber optic interface and the light-transmitting aperture 212 is relatively short, thereby allowing the laser emitted from the fiber optic interface to quickly pass through the light-transmitting aperture and enter the hollow channel. That is, the automatic optical protection device 10 provided in this embodiment can be compatible with lenses or optical devices in different fields.

Referring to Figures 1 to 3, in one possible implementation, the protective component 214 includes a mounting sleeve 223. The mounting area 213 includes a groove wall surface 2131 perpendicular to the end face of the protective head housing 21 and a groove bottom surface 2132 parallel to the end face of the protective head housing. The mounting sleeve 223 is fitted onto the groove bottom surface 2132 to enclose the mounting area 213. It should be understood that the mounting area 213 is formed along its axial direction from the end of the protective head housing 21 near the protective component 22 towards the end near the optical output head 1. The surface of the mounting area 213 is "L"-shaped or wedge-shaped. Specifically, the end face of the mounting area 213 perpendicular to the protective head housing 21 is the groove wall surface 2131, and the end face parallel to the protective head housing 21 is the groove bottom surface 2132. One function of the mounting area 213 is to accommodate the protective component 22. Furthermore, the mounting sleeve 223 fitted onto the mounting area 213 can protect the protective component 22 within the mounting area 213. It should be noted that the inner diameter of the hollow channel 201 is usually matched with the outer diameter of the protective head housing 21. When the protective head 2 is connected to the lens or optical device 20, the mounting sleeve 223 will be inserted into the hollow channel 201 along with the protective head housing 21. Therefore, the diameter of the mounting sleeve 223 needs to be equal to or smaller than the outer diameter of the protective head housing 21 to avoid the mounting sleeve 223 obstructing the protective head housing 21 from entering the hollow channel 201.

As one possible implementation, the protective component 22 disposed on the mounting area 213 can be directly inserted into the hollow channel 201 along with the protective head housing 21. This implementation eliminates the need for a mounting area 213 housing, making the protective head 2 lighter.

Specifically, referring to Figure 5, the trigger component 3 includes a fixing member 31 and a trigger member 32. The fixing member 31 is disposed within the hollow channel 201, and a clearance channel 311 is provided on the fixing member 31 corresponding to the optical path channel 211. The trigger member 32 is disposed on the side of the fixing member 31 closer to the protective component 22. It should be understood that the general structure of lenses or optical devices 20 in different fields will vary. For example, in the field of laser obstacle removal, the lens or optical device 20 is a laser emitting head. In the field of laser welding, the lens or optical device 20 is a laser welding head. In the field of laser cutting, the lens or optical device 20 is a laser cutting head. The trigger component 3 provided in this embodiment is adapted to the above-mentioned different lenses or optical devices 20. Specifically, the fixing member 31 is disposed within the hollow channel 201 of different lenses or optical devices 20. The fixing member 31 can be detachably connected to the inner wall of the hollow channel 201 via threaded connection or snap-fit connection. Alternatively, the fixing member 31 can be integrally formed with the inner wall of the hollow channel 201 via adhesive connection or welding. It should be noted that, since the end of the trigger member 32 furthest from the fixing member 31 can contact the trigger part 2223 after the protective head housing 21 enters the hollow channel 201, the distance between the fixing member 31 and the opening 202 will be less than the length of the protective head housing 21. Furthermore, the optical fiber interface, optical path channel 211, the light-transmitting hole 212 of the protective head housing 21, the hollow channel 201, and the avoidance channel 311 share the same axis. Therefore, the laser output from the optical fiber interface will sequentially pass through the optical path channel 211, the hollow channel 201, and the avoidance channel 311 before being output.

Furthermore, referring to Figures 1, 2, 3, and 6, the trigger portion 2223 forms a non-perpendicular angle with the axial direction of the optical path channel 211. When the protective head 2 is connected to the lens or optical device 20, the trigger member 32 slides with the trigger portion 2223, causing the cover portion 2221 to move radially along the light-transmitting hole 212, so that the cover portion 2221 gradually moves away from the light-transmitting hole until the optical path channel 211 and the hollow channel 201 are connected. It should be understood that when the protective head housing 21 enters the hollow channel 201, the trigger member 32 will contact the trigger portion 2223, and the shape of the trigger member 32 and the shape of the trigger portion 2223 are adapted to each other. For example, the cross-section of the trigger member 32 along the axial direction of the protective head housing 21 shown in Figures 5 and 6 is conical, and the trigger portion 2223 is a structure formed by the connection portion 2222 being recessed in the direction away from the light-transmitting hole 212, which presents an inclined structure. When the protective head 2 is inserted into the hollow channel 201 and connected to the lens or optical device 20, the tapered inclined surface of the trigger member 32 first contacts the wedge-shaped section of the trigger part 2223. Furthermore, the trigger part 2223 is continuously subjected to force, causing the connecting part 2222 to move away from the light-transmitting hole 212 of the optical path channel 211. This, in turn, drives the covering part 2221 to move radially along the optical path channel 211 and gradually move away from the light-transmitting hole 212 until the covering part 2221 completely exposes the light-transmitting hole 212 of the optical path channel 211. At this point, the connection between the protective head 2 and the lens or optical device 20 is completed. It should be understood that at this time, the optical path channel 211 and the hollow channel 201 are connected, and the laser can be output from the fiber optic interface and enter the interior of the hollow channel 201 through the light-transmitting hole 212 of the optical path channel 211.

When the protective head 2 and the lens or optical device 20 are disconnected, the elastic member 221 provides a restoring force. This restoring force forces the connecting part 2222 to move towards the light-transmitting hole 212 of the optical path channel 211. This, in turn, causes the covering part 2221 to move radially along the optical path channel 211 and gradually approach the light-transmitting hole 212 until the covering part 2221 completely covers the light-transmitting hole 212. At this point, the elastic member 221 returns to its normal state. It should be understood that the covering part 222 can be implemented in various ways to close the light-transmitting hole 212.

Referring to Figures 2, 6, 7, and 8, in one possible implementation, the number of cover members 222 is at least one. Specifically, in one embodiment, the protective component body 214 is provided with an elastic member connection position 2141, and the connection portion 2222 is provided with a limiting post 2224 on the side near the protective component body 214. One end of the elastic member 221 passes through the limiting post 2224 and connects to the connection portion 2222, and the other end passes through the elastic member connection position 2141 and connects to the protective component body 214. The elastic member 221 is used to provide a pushing or pulling force to make the cover member 222 close the light transmission hole 212.

It should be understood that the connecting part 2222 is disposed on the groove wall surface 2131 of the mounting area 213 but with a gap between it and the groove wall surface 2131, so that the connecting part 2222 can move relative to the groove wall surface 2131. The elastic element 221 is disposed between the connecting part 2222 and the protective component body 214. The function of the limiting post 2224 and the elastic element connection position 2141 is to serve as the connection point of the elastic element 221. Its shape can be a groove, and it can also limit the elastic element 221 to prevent the elastic element 221 from slipping when the connecting part 2222 moves. In the normal state, the elastic element 221 is neither stretched nor compressed. At this time, the covering part 2221 just closes the light-transmitting hole 212 of the optical path channel 211. In addition, when the protective head housing 21 shakes, the elastic element 221 will also provide radial and axial forces to limit the movement of the connecting part 2222 to prevent the covering part 2221 from shaking. When the trigger 32 contacts the trigger portion 2223, in one embodiment, as shown in Figure 7, as the trigger 32 slides against the trigger portion 2223, the connecting portion 2222 moves away from the protective component body 214, and the elastic member 221 is stretched. In another embodiment, as shown in Figure 8, as the trigger 32 slides against the trigger portion 2223, the connecting portion 2222 moves closer to the protective component body 214, and the elastic member 221 is compressed. In both embodiments, the connecting portion 2222 ultimately moves, causing the covering portion 2221 to move as well, thus exposing the light-transmitting hole 212 of the optical path channel 211.

Furthermore, when the trigger 32 and the trigger part 2223 are no longer in contact, the elastic member 221 provides a pushing or pulling force to make the connecting part 2222 move toward the light-transmitting hole 212 of the optical path channel 211, thereby driving the covering part 2221 to move along the radial direction of the optical path channel 211 and gradually approach the light-transmitting hole 212 of the optical path channel 211 until the covering part 2221 completely covers the light-transmitting hole 212 of the optical path channel 211. At this time, the elastic member 221 returns to the normal state.

Referring to Figures 2, 6, and 9, in another possible embodiment, there are two cover members 222. The covering portions 2221 of both cover members 222 are located at the end of the protective component body 214 away from the protective head housing 21. An elastic member 221 is provided between the connecting portions 2222 of one cover member 222 and the connecting portions 2222 of the other cover member 222. The elastic member 221 provides tension to close the light-transmitting hole 212. It can be understood that when there are two cover members 222, an elastic member 221 is still provided between each cover member 222 and the protective component body 214 (not shown in the accompanying drawings in this embodiment). The main function of this elastic member 221 is to act as a bridge connecting the cover member 222 and the protective head housing 21, allowing the cover member 222 to be connected to the protective head housing 21. An elastic element 221 can be sandwiched between the connecting parts of the two cover elements 222. When the elastic element 221 is in a stretched state, the tension provided by the elastic element 221 forces the two cover elements 222 to move closer together, causing the covering portions 2221 of the two cover elements 222 to close and seal the light-transmitting hole 212. When the trigger element 32 contacts the trigger portion 2223, the two cover elements 222 will move away from each other until the light-transmitting hole 212 of the optical path channel 211 is exposed. When the trigger element 32 and the trigger portion 2223 are released from contact, the tension provided by the elastic element 221 will again force the two cover elements 222 to move closer together to seal the light-transmitting hole 212.

Furthermore, when the protective head 2 and the lens or optical device 20 are not connected, the radial and axial forces provided by the elastic member 221 alone may not be sufficient to restrict the movement trajectory of the cover member 222. Therefore, this embodiment also provides a more stable structure to enhance the restriction of the movement trajectory of the cover member 222.

Referring to Figures 2, 5, and 9a, in one possible embodiment, the protective component 22 further includes an elastic connector 224. A first fixing post 215 is provided at one end of the groove wall surface 2131 near the groove bottom surface 2132, and a second fixing post 2225 is provided at one end of the connecting portion 2222 near the groove bottom surface 2132. One end of the elastic connector 224 is connected to the first fixing post 215, and the other end is connected to the second fixing post 2225. It should be understood that the elastic connector 224 provides a continuous tensile force, which forces the cover 222 to always be subjected to a force near the groove bottom surface 2132. When the trigger portion 2223 on the connecting portion 2222 contacts the trigger 32, the connecting portion 2222 is always subjected to a force near the groove bottom surface 2132, and thus the cover 2221 will move against the end face of the protective head housing 21. It should be understood that the elastic connector 224 restricts the movement trajectory of the cover 222, making the movement trajectory of the cover 222 more stable when the protective head 2 and the lens or optical device 20 are disassembled or connected.

Referring to Figures 9b and 10, in another possible embodiment, the connecting portion 2222 has a groove 2226 on the side near the mounting area 213, and the mounting area 213 has a snap-fit slide rail 216 corresponding to the groove 2226. Specifically, the connecting portion 2222 has a groove 2226 on the side near the groove wall 2131, and the groove wall 2131 protrudes to form the snap-fit slide rail 216 corresponding to the groove 2226. The snap-fit slide rail 216 cooperates with the groove 2226 so that the connecting portion 2222 can drive the covering portion 2221 to move along the snap-fit slide rail 216. It should be understood that when the trigger portion 2223 on the connecting portion 2222 contacts the trigger member 32, the connecting portion 2222 will move along the snap-fit slide rail 216 due to the limitation of the snap-fit slide rail 216, while the distance between the covering portion 2221 and the end face of the protective head housing 21 remains unchanged.

In another possible implementation, the two implementation methods described above can also be used in combination, which will not be elaborated on here.

Further, referring to Figures 4 and 6, the mounting sleeve 223 has a first clearance channel 2231 corresponding to the optical path channel 211, and a second clearance channel 2232 corresponding to the trigger 32. The trigger 32 passes through the second clearance channel 2232 and is slidably connected to the trigger part 2223. It should be understood that the function of the first clearance channel 2231 is to allow the laser to pass through, while the second clearance channel 2232 is for the trigger 32 to pass through. Therefore, the diameter of the first channel should be greater than or equal to the diameter of the light-transmitting hole 212.

Referring to Figures 2 and 3, the second embodiment of the present invention also provides a laser emitting device, including a laser generator, a lens or optical device 20, and the aforementioned automatic optical protection device 10. The automatic optical protection device 10 includes an optical output head 1 and a protection head 2. One end of the optical output head 1 is connected to the laser generator, and the other end is connected to the protection head 2. A hollow channel 201 with an opening 202 is formed on the lens or optical device 20. The end of the protection head 2 away from the optical output head 1 can pass through the opening 202 and be detachably connected to the lens or optical device 20.

Understandably, the automatic optical protection device 10 in this embodiment has wide adaptability. Whether applied in laser obstacle removal, laser cutting, laser welding or other fields, the automatic optical protection device 10 can be well adapted to lenses or optical devices 20 in different fields, and can also protect the fiber optic interface in the optical path channel 211.

Furthermore, the laser output head 2 is provided with a snap-fit structure at one end near the laser transmission line 1, and the lens or optical device is provided with a mating structure that cooperates with the snap-fit structure. When the laser output head 2 is inserted into the hollow channel 201, the trigger component 3 is in contact with the trigger part 2223 at one end near the protection component 22, and drives the connecting part 2222 to move. After the connecting part 2222 moves, it drives the covering part 2221 to move together, so that the light-transmitting hole 212 is exposed. That is, after the covering part 2221 moves away from the light-transmitting hole 212, the snap-fit structure can be snap-fitted to the surface or mating structure of the laser output device 20 to enhance the connection stability between the laser output head 2 and the laser output device 20.

The above provides a detailed description of an automatic optical protection device and a laser emitting device disclosed in the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the principles of the present invention should be included within the protection scope of the present invention.

Claims (8)

1. An automatic optical protection device is used for adapting to different lenses or optical devices and is characterized by comprising a protection head and a triggering component, wherein the protection head comprises a protection head shell and a protection component;

the protection component comprises a protection component body, an elastic piece and a covering piece, wherein a containing cavity for containing an optical output head is arranged in a protection head shell, an optical path channel is formed by penetrating the protection component body along the optical path direction of the containing cavity, one end of the optical path channel, which is far away from the optical output head, is provided with a mounting area and a light through hole, the light through hole is communicated with the optical path channel in the protection head shell, the covering piece comprises a covering part, a connecting part and a triggering part, the covering part is arranged at one end, which is far away from the protection head shell, of the protection component body, the connecting part is arranged at one side, which is close to the mounting area, of the covering part, the triggering part is arranged on the connecting part or the covering part, the elastic piece is arranged between the connecting part and the protection component body, the elastic piece drives the connecting part and the covering part to move relative to the protection head shell so that the light through hole is sealed by the covering part, and an included angle which is not perpendicular to the axial direction of the optical path channel is formed;

The lens or the optical device is provided with a hollow channel with an opening, the trigger assembly is arranged in the hollow channel, the trigger assembly comprises a fixing piece and a trigger piece, the fixing piece is arranged in the hollow channel, an avoidance channel is arranged on the fixing piece corresponding to the light path channel, the trigger piece is arranged on one side, close to the protection assembly, of the fixing piece, when one end, far away from the optical output head, of the protection head penetrates through the opening and is detachably connected with the lens or the optical device, the trigger piece, close to one end of the protection assembly, of the trigger assembly is in sliding connection with the trigger part, and drives the covering part to be away from the light through hole so that the light path channel and the hollow channel are communicated.

2. An automatic optical protection device according to claim 1 wherein said protection assembly comprises a mounting sleeve that fits over said protection assembly to cover said mounting area.

3. The automatic optical protection device according to claim 1, wherein at least one of the number of the covering members is provided with an elastic member connecting position on the protection assembly body, a limit post is arranged on one side of the connecting portion, which is close to the protection assembly body, one end of the elastic member passes through the limit post to be connected with the connecting portion, the other end passes through the elastic member connecting position to be connected with the protection assembly body, and the elastic member is used for providing pushing force or pulling force to enable the covering member to seal the light through hole.

4. The automatic optical protection device according to claim 1, wherein the number of the shielding members is two, the shielding portions of the two shielding members are disposed at one end of the protection assembly body away from the protection head housing, and an elastic member is disposed between the connecting portion of one shielding member and the connecting portion of the other shielding member, and the elastic member is used for providing a tensile force to enable the shielding member to close the light-transmitting hole.

5. The automated optical inspection device of claim 1 wherein the mounting area comprises a slot wall perpendicular to the end face of the protective head housing and a slot bottom parallel to the end face of the protective head housing, the protective assembly further comprising an elastic connector, a first fixing post being disposed at one end of the slot wall adjacent to the slot bottom, a second fixing post being disposed at one end of the connector adjacent to the slot bottom, one end of the elastic connector being connected to the first fixing post, and the other end being connected to the second fixing post.

6. The automatic optical protection device according to claim 1, wherein a sliding groove is formed in one side, close to the installation area, of the connecting portion, a clamping sliding rail is arranged in the installation area, corresponding to the sliding groove, and the clamping sliding rail is matched with the sliding groove, so that the connecting portion can drive the covering portion to move along the clamping sliding rail.

7. The automatic optical protection device according to claim 2, wherein the mounting sleeve is provided with a first yielding channel corresponding to the optical path channel, and a second yielding channel corresponding to the trigger piece, and the trigger piece passes through the second yielding channel and is slidably connected with the trigger part.

8. The laser emission device is characterized by comprising a laser generator, a lens or an optical device and the automatic optical protection device according to any one of claims 1-7, wherein the automatic optical protection device comprises an optical output head and a protection head, one end of the optical output head is connected with the laser generator, the other end of the optical output head is connected with the protection head, a hollow channel with an opening is formed in the lens or the optical device, a clamping structure is further arranged at one end, far away from the protection component, of the protection head, a matching structure matched with the clamping structure is arranged on the lens or the optical device, and after the covering part is far away from the light through hole, the clamping structure is in clamping connection with the outer surface or the matching structure of the lens or the optical device.