CN218885370U - Optical fiber end face on-line monitoring system and laser medical equipment - Google Patents

Abstract

The utility model relates to a laser equipment technical field particularly, relates to an optic fibre terminal surface on-line monitoring system and laser medical equipment. In the optical fiber end face on-line monitoring system, a semi-transparent and semi-reflective mirror is arranged between an illumination light source and an optical fiber end face, a dichroic mirror is arranged between a treatment light source and the optical fiber end face, and the semi-transparent and semi-reflective mirror and the dichroic mirror are respectively arranged between the optical fiber end face and an image acquisition module; the half-transmitting and half-reflecting mirror can transmit part of the illuminating light and can reflect part of the illuminating light; the dichroic mirror separates the illumination light from the treatment light and propagates the illumination light toward the image acquisition module. The utility model provides an optical fiber end face on-line monitoring system and laser medical equipment can carry out real-time on-line monitoring to optical fiber end face through the illumination light, is polluted too seriously or damages when too serious by the foreign matter at optical fiber end face, in time discovers to can in time clear up the foreign matter or change optic fibre, can guarantee the effective transmission of optic fibre to the treatment light, and can reduce the risk of accident, improve equipment reliability.

Description

Optical fiber end face on-line monitoring system and laser medical equipment

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to an optic fibre terminal surface on-line monitoring system and laser medical equipment.

Background

At present, some medical devices use treatment light to perform accurate treatment on a focus part of a patient, the medical devices comprise an optical fiber and an optical module, the optical fiber is mainly connected with the optical module through an optical fiber jumper connector, wherein the optical fiber is used as an energy transmission channel of the medical device, the optical fiber jumper connector is usually subjected to a plurality of dismounting processes in the processes of transportation, installation, debugging and maintenance, and the optical fiber jumper connector is often subjected to foreign matter pollution due to insufficient protection consciousness of an operator on the end face of the connector or environmental factors in the dismounting or replacing processes; the foreign matter attached to the end face of the optical fiber can cause the ineffective transmission of the therapeutic light, which affects the use effect and even causes use accidents, and the foreign matter can absorb a large amount of therapeutic light energy to form a heat island, damage the optical fiber or the therapeutic light source and cause the poor reliability of the device.

In order to prevent cross infection or match different treatment modes, doctors need to replace optical fibers on site, and the possibility that the end faces of the optical fibers are polluted by foreign matters is increased; foreign matter attached to the end face of the optical fiber may affect the therapeutic effect and even cause medical accidents.

In summary, how to overcome the above-mentioned defects of the existing medical devices is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optic fibre terminal surface on-line monitoring system and laser medical equipment to it is relatively poor to alleviate the security that medical equipment among the prior art exists, takes place the technical problem of medical malpractice easily.

The utility model provides an optical fiber end face on-line monitoring system, including light source, treatment light source, semi-transparent half-reflecting mirror, dichroic mirror and image acquisition module.

The semi-transparent semi-reflecting mirror is arranged between the illuminating light source and the optical fiber end face, the dichroic mirror is arranged between the therapeutic light source and the optical fiber end face, and the semi-transparent semi-reflecting mirror and the dichroic mirror are respectively arranged between the optical fiber end face and the image acquisition module.

The center wavelength of the therapeutic light emitted by the therapeutic light source is different from the center wavelength of the illuminating light emitted by the illuminating light source, and the half-transmitting and half-reflecting mirror can transmit part of the illuminating light and reflect part of the illuminating light; the dichroic mirror separates the illumination light from the treatment light and propagates the illumination light toward the image acquisition module.

Preferably, as an embodiment, the light spot formed on the end face of the optical fiber by the illumination light can cover the end face of the optical fiber.

Preferably, as an implementation mode, the illumination light source, the half mirror, the dichroic mirror and the fiber end surface are sequentially arranged along the propagation direction of the illumination light, the treatment light source, the dichroic mirror and the fiber end surface are sequentially arranged along the propagation direction of the treatment light, the fiber end surface, the dichroic mirror, the half mirror and the image acquisition module are sequentially arranged along the return propagation direction of the illumination light, and the half mirror and the treatment light source are respectively disposed opposite to the two side mirror surfaces of the dichroic mirror; the dichroic mirror has a high transmittance for the illumination light and a high reflectance for the treatment light.

Preferably, as an implementation mode, the fiber-optic end-face online monitoring system further includes a waste light absorber, the waste light absorber is opposite to a mirror surface of the half mirror facing the illumination light source, and the waste light absorber is used for absorbing the illumination light reflected by the half mirror.

Preferably, as an implementation manner, the illumination light source, the half mirror and the fiber end face are sequentially arranged along a propagation direction of the illumination light, the treatment light source, the dichroic mirror, the half mirror and the fiber end face are sequentially arranged along the propagation direction of the treatment light, the illumination light source and the dichroic mirror are respectively arranged opposite to two side mirror faces of the half mirror, and the fiber end face, the half mirror, the dichroic mirror and the image acquisition module are sequentially arranged along a return propagation direction of the illumination light; the dichroic mirror has a high reflectance for the illumination light and a high transmittance for the treatment light.

Preferably, as an implementation mode, the included angle between the dichroic mirror and the incident optical axis of the optical fiber is in a range of 40-50 °;

and/or the included angle between the semi-transparent semi-reflecting mirror and the incident optical axis of the optical fiber ranges from 40 degrees to 50 degrees;

and/or the transmittance of the half-transmitting and half-reflecting mirror to the illumination light is 40-60%.

Preferably, as an implementable embodiment, the fiber end surface on-line monitoring system further includes a converging lens, the converging lens is opposite to the fiber end surface, and the half-transmitting mirror and the dichroic mirror are both located on a side of the converging lens, which faces away from the fiber end surface.

Preferably, as an implementable embodiment, the fiber end surface on-line monitoring system further includes an optical filter for filtering the therapeutic light, the half-mirror and the dichroic mirror are both disposed on a light beam incident side of the optical filter, and the image acquisition module is disposed on a light beam emergent side of the optical filter.

Preferably, as an implementation manner, the image acquisition module includes an imaging lens, a camera, an image processing unit and a display terminal, the half mirror and the dichroic mirror are both disposed on a light beam incident side of the imaging lens, and the camera is disposed on a light beam emergent side of the imaging lens; the camera and the display terminal are in communication connection with the image processing unit.

The utility model provides a laser medical equipment, it includes above-mentioned fiber end face on-line monitoring system.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the treatment light emitted by the treatment light source can be transmitted to the end face of the optical fiber through the dichroic mirror, meanwhile, the illumination light emitted by the illumination light source can be transmitted to the end face of the optical fiber through the semi-transparent and semi-reflective mirror, after the treatment light and the illumination light are transmitted to the end face of the optical fiber, most of the treatment light (more than 80% -90%) can be incident into the fiber core and transmitted to a target through the optical fiber, and a small amount of the treatment light and the illumination light can be partially reflected by the end face of the optical fiber. Because the half mirror can transmit part of the illumination light and reflect part of the illumination light, the illumination light reflected by the end face of the optical fiber can be partially transmitted towards the image acquisition module towards the direction different from the illumination light source after passing through the half mirror, so as to avoid the interference of a light path and a structure; because the central wavelength of the treatment light and the central wavelength of the illumination light have a wavelength difference, the dichroic mirror can separate the treatment light from the illumination light, so that the illumination light and the treatment light can be respectively transmitted and reflected after passing through the dichroic mirror, the illumination light and the treatment light reflected by the end face of the optical fiber can respectively propagate towards different directions after passing through the dichroic mirror, wherein the treatment light can deviate from the propagation direction of the illumination light after passing through the dichroic mirror, and the illumination light can propagate towards the image acquisition module after passing through the dichroic mirror, and is finally acquired by the image acquisition module. The user can carry out real-time supervision to the optic fibre terminal surface according to the image of the optic fibre terminal surface that image acquisition module obtained, for example: whether foreign matters exist on the image reflecting the end face of the optical fiber or not can be checked, and whether the foreign matters need to be cleaned or not is judged according to the size and the position of the foreign matters; when the end face of the optical fiber is damaged and burned black, the energy of the output illumination light can be greatly reduced, namely, the illumination light reflected by the end face of the optical fiber is increased, and the brightness of the image reflecting the end face of the optical fiber is increased, so that the damage condition of the end face of the optical fiber can be checked by reflecting the brightness of the image reflecting the end face of the optical fiber, and whether the optical fiber needs to be replaced or not can be judged.

Therefore, the utility model provides an optical fiber end face on-line monitoring system, can separate the illumination light and the treatment light that the optical fiber end face reflection returns, carry out independent analysis processes with the illumination light that reflects back to the optical fiber end face, that is to say, when utilizing optic fibre to transmit treatment light to the target, can carry out real-time on-line monitoring to the optical fiber end face through the illumination light, whether real-time recognition optical fiber end face's state can continue to use, thereby, be polluted too seriously or damage when too serious by the foreign matter at the optical fiber end face, in time discover, in order to clear up the foreign matter in time or change optic fibre, can guarantee the effective transmission of optic fibre to treatment light, and can reduce the accident risk, improve equipment reliability.

The utility model provides a laser medical equipment has fused above-mentioned fiber end face on-line monitoring system, can improve treatment and security, reduces the medical malpractice.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic view of a first structure of an optical fiber end surface on-line monitoring system according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of the optical fiber end surface on-line monitoring system provided by the embodiment of the present invention.

Description of reference numerals:

1-an illumination light source; 2-a therapeutic light source; 3-a half-transmitting half-reflecting mirror; a 4-dichroic mirror; 5-a waste light absorber; 6-a converging lens; 7-an optical filter; 8-an imaging lens; 9-a camera; 10-an image processing unit; 11-a display terminal; 12-an optical fiber.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.

Fig. 1 and fig. 2 are schematic structural diagrams of two fiber-optic end-face on-line monitoring systems provided by an embodiment, wherein solid arrows indicate the direction of propagation of illumination light, and dashed arrows indicate the direction of propagation of treatment light.

Referring to fig. 1 and fig. 2, the present embodiment provides an optical fiber end surface on-line monitoring system, which includes an illumination light source 1, a treatment light source 2, a half-transmitting and half-reflecting mirror 3, a dichroic mirror 4 and an image acquisition module; the semi-transparent semi-reflecting mirror 3 is arranged between the illumination light source 1 and the optical fiber end face, the dichroic mirror 4 is arranged between the treatment light source 2 and the optical fiber end face, and the semi-transparent semi-reflecting mirror 3 and the dichroic mirror 4 are respectively arranged between the optical fiber end face and the image acquisition module; the central wavelength of the illuminating light emitted by the illuminating light source 1 is different from the wavelength of the therapeutic light emitted by the therapeutic light source 2, and the half mirror 3 can transmit part of the illuminating light and reflect part of the illuminating light; the dichroic mirror 4 separates the illumination light from the treatment light and propagates the illumination light towards the image acquisition module.

The therapeutic light emitted by the therapeutic light source 2 can be transmitted to the end face of the optical fiber through the dichroic mirror 4, meanwhile, the illuminating light emitted by the illuminating light source 1 can be transmitted to the end face of the optical fiber through the semi-transparent and semi-reflective mirror 3, after the therapeutic light and the illuminating light are transmitted to the end face of the optical fiber, most of the therapeutic light (more than 80% -90%) can be incident into the fiber core and transmitted to the target through the optical fiber 12, and a small amount of the therapeutic light and the illuminating light can be partially reflected by the end face of the optical fiber. Because the half mirror 3 can transmit part of the illumination light and reflect part of the illumination light, the illumination light reflected by the end face of the optical fiber can be partially transmitted towards the image acquisition module towards the direction different from the illumination light source after passing through the half mirror 3, so as to avoid the interference of the light path and the structure; since the central wavelength λ 1 of the therapeutic light and the central wavelength λ 2 of the illumination light have a wavelength difference, that is, λ 1 ≠ λ 2, the dichroic mirror 4 can separate the therapeutic light with the wavelength λ 1 from the illumination light with the wavelength λ 2, so that the illumination light and the therapeutic light can be transmitted and reflected respectively after passing through the dichroic mirror 4, and therefore the illumination light and the therapeutic light reflected by the end face of the optical fiber can respectively propagate toward different directions after passing through the dichroic mirror 4, wherein the therapeutic light can deviate from the propagation direction of the illumination light after passing through the dichroic mirror 4, and the illumination light can propagate toward the image acquisition module after passing through the dichroic mirror 4, and is finally acquired by the image acquisition module. The user can carry out real-time supervision to the optic fibre terminal surface according to the image of the optic fibre terminal surface that image acquisition module obtained, for example: whether foreign matters exist on the image reflecting the end face of the optical fiber can be checked, and whether the foreign matters need to be cleaned is judged according to the size and the position of the foreign matters; when the end face of the optical fiber is damaged and burned black, the energy of the output illumination light is greatly reduced, namely, the illumination light reflected by the end face of the optical fiber is increased, and the brightness of the image reflecting the end face of the optical fiber is increased, so that the damage condition of the end face of the optical fiber can be checked by reflecting the brightness of the image reflecting the end face of the optical fiber, and whether the optical fiber 12 needs to be replaced or not can be judged.

Therefore, the fiber end face on-line monitoring system that this embodiment provided, can separate the illumination light and the treatment light that the fiber end face reflects back, carry out analysis process alone with the illumination light that reflects back to the fiber end face, that is to say, when utilizing optic fibre to transmit treatment light to the target, can carry out real-time on-line monitoring to the fiber end face through the illumination light, whether the state of real-time identification fiber end face can continue to use, thereby, when the fiber end face is polluted too seriously or damaged too seriously by the foreign matter, in time discover, in order can in time clear up the foreign matter or change optic fibre 12, can guarantee the effective transmission of optic fibre 12 to treatment light, and can reduce the accident risk, improve equipment reliability.

It should be noted that, when the area of the end face of the optical fiber contaminated by the foreign matter is small, the use of the optical fiber 12 is not affected, and the treatment may not be performed, but the foreign matter may absorb the therapeutic light to form a "heat island", which results in the gradual damage of the optical fiber 12, during the real-time online monitoring of the end face of the optical fiber, the damage condition of the optical fiber 12 may be monitored at any time, the damage degree may be determined in time, when the damage is serious, the optical fiber 12 may be treated in time, so as to ensure the effective transmission of the optical fiber 12 to the therapeutic light, and prevent the occurrence of accidents.

The central wavelength λ 2 of the illumination light may take a value between 300nm and 1100 nm.

Preferably, a light spot formed on the end face of the optical fiber by the illumination light is limited to cover the end face of the optical fiber, so that the image acquisition module can acquire a complete image of the end face of the optical fiber, thereby realizing real-time detection of the whole end face of the optical fiber; on the basis, the diameter of the optical fiber 12 can be obtained through analyzing the complete image of the end face of the optical fiber, so as to judge whether the installed optical fiber 12 meets the requirements and avoid the misuse of the optical fiber 12.

The illumination light source 1, the half mirror 3, the dichroic mirror 4, and the image acquisition unit may be arranged by using any one of the following two schemes:

a1, referring to fig. 1, an illumination light source 1, a half mirror 3, a dichroic mirror 4, and an optical fiber end surface are sequentially arranged along a propagation direction of illumination light, a treatment light source 2, a dichroic mirror 4, and an optical fiber end surface are sequentially arranged along a propagation direction of treatment light, an optical fiber end surface, a dichroic mirror 4, a half mirror 3, and an image acquisition module are sequentially arranged along a return propagation direction of the illumination light, and the half mirror 3 and the treatment light source 2 are respectively arranged opposite to mirror surfaces on both sides of the dichroic mirror 4, wherein the dichroic mirror 4 has a high transmittance for the illumination light with a wavelength λ 2 and a high reflectance for the treatment light with a wavelength λ 1. The treatment light emitted by the treatment light source 2 can be reflected to the optical fiber end surface by the dichroic mirror 4, and most of the treatment light transmitted to the optical fiber end surface can enter the wire core and is transmitted to the target; a small amount of therapeutic light is reflected by the end face of the optical fiber and returns to the dichroic mirror 4 along the original path, and is reflected by the dichroic mirror 4 and returns along the original path. The illumination light emitted by the illumination light source 1 can partially transmit through the half mirror 3 and propagate to the dichroic mirror 4, the dichroic mirror 4 can transmit most of the illumination light, and the illumination light can propagate to the end face of the optical fiber after transmitting through the dichroic mirror 4; part of the illumination light can be reflected by the fiber end face and returns to the dichroic mirror 4 along the original path, the dichroic mirror 4 can transmit most of the illumination light, so that the illumination light can be separated from the mixed beam of the illumination light and the treatment light, the illumination light transmitted through the dichroic mirror 4 can be transmitted to the half mirror 3, the half mirror 3 can reflect part of the illumination light to the image acquisition module, and thus the image acquisition module can acquire the image of the fiber end face.

Specifically, at least one surface of the dichroic mirror 4 may be coated with a dichroic film having high transmittance for the illumination light and high reflectance for the therapeutic light, and the function of separating the illumination light by the dichroic mirror 4 can be realized. High reflectance means a reflectance of 99% or more. High transmittance means a transmittance of 99% or more. Preferably, the two-color film of the present embodiment has a high reflectivity of 99.8% to 99.999% and a high transmittance of 99.8% to 99.999%.

In addition to the above configuration, a waste light absorber 5 may be additionally provided, the waste light absorber 5 is disposed so as to face the mirror surface of the half mirror 3 facing the illumination light source 1, and when the illumination light emitted from the illumination light source 1 propagates through the half mirror 3, a large amount of the illumination light is reflected by the half mirror 3, and the unnecessary illumination light propagates through the waste light absorber 5 and is absorbed by the waste light absorber 5.

And A2, referring to fig. 2, an illumination light source 1, a half mirror 3 and a fiber end face are sequentially arranged along the propagation direction of illumination light, a treatment light source 2, a dichroic mirror 4, a half mirror 3 and a fiber end face are sequentially arranged along the propagation direction of treatment light, the illumination light source 1 and the dichroic mirror 4 are respectively arranged opposite to two side mirror surfaces of the half mirror 3, and the fiber end face, the half mirror 3, the dichroic mirror 4 and an image acquisition module are sequentially arranged along the return propagation direction of the illumination light, wherein the dichroic mirror 4 has high reflectivity for the illumination light with the wavelength of lambda 2 and high transmissivity for the treatment light with the wavelength of lambda 1. Most of the therapeutic light emitted by the therapeutic light source 2 can penetrate through the dichroic mirror 4, the therapeutic light penetrating through the dichroic mirror 4 can partially penetrate through the semi-transparent semi-reflective mirror 3 to be transmitted to the end face of the optical fiber, and most of the therapeutic light transmitted to the end face of the optical fiber can enter the wire core and is transmitted to the target; a small amount of therapeutic light is reflected by the end face of the optical fiber and returns to the half mirror 3 along the original path, part of the therapeutic light can transmit through the half mirror 3 to the dichroic mirror 4, and most of the therapeutic light can transmit through the dichroic mirror 4 and return along the original path. The illuminating light emitted by the illuminating light source 1 can be partially reflected to the end face of the optical fiber by the half mirror 3; part of the illumination light can be reflected by the fiber end face and returns to the half mirror 3 along the original path, part of the illumination light can be transmitted to the dichroic mirror 4 through the half mirror 3, the dichroic mirror 4 can reflect most of the illumination light, so that the illumination light can be separated from the mixed beam of the illumination light and the treatment light, the illumination light reflected by the half mirror 3 can be transmitted to the image acquisition module, and the image acquisition module can acquire the image of the fiber end face.

Specifically, the dichroic mirror 4 may be set to have an angle with the optical axis of incidence of the optical fiber (which is coaxial with the end face of the optical fiber) in the range of 40 ° to 50 °, preferably 45 °, for easy installation.

The included angle range of the semi-transparent semi-reflecting mirror 3 and the optical fiber incident optical axis (coaxial with the optical fiber end face) can be set to be 40-50 degrees, preferably 45 degrees, the semi-transparent semi-reflecting effect can be ensured, and the installation is convenient.

Referring to fig. 1, if the scheme A1 is adopted, the included angle between the dichroic mirror 4 and the optical fiber incident optical axis is set to 45 °, the included angle between the semi-transparent semi-reflective mirror 3 and the optical fiber incident optical axis is set to 45 °, the illumination light sources 2-the semi-transparent semi-reflective mirror 3-the dichroic mirror 4-the optical fiber end faces are sequentially arranged along the straight line where the optical fiber incident optical axis is located; the therapeutic light emitted by the therapeutic light source 2 forms an angle of 45 degrees with the mirror surface of the dichroic mirror 4 and forms an angle of 90 degrees with the incident optical axis of the optical fiber; the illumination light reflected by the half mirror 3 and transmitted to the image acquisition module forms an angle of 45 degrees with the mirror surface of the half mirror 3 and forms an angle of 90 degrees with the incident optical axis of the optical fiber; the illumination light reflected by the half mirror 3 and propagated toward the waste light absorber 5 forms an angle of 45 degrees with the mirror surface of the half mirror 3 and forms an angle of 90 degrees with the optical fiber incident optical axis, which is equivalent to that the therapeutic light source 2 and the image acquisition module are arranged side by side on the same side of the optical fiber incident optical axis, and the waste light absorber 5 and the image acquisition module are respectively arranged on two sides of the optical fiber incident optical axis.

Referring to fig. 2, if the above scheme A2 is adopted, the included angle between the dichroic mirror 4 and the incident optical axis of the optical fiber is set to 45 °, the included angle between the half-mirror 3 and the incident optical axis of the optical fiber is set to 45 °, the therapeutic light sources 2-the dichroic mirror 4-the half-mirror 3-the end faces of the optical fibers are sequentially arranged along the straight line where the incident optical axis of the optical fiber is located; the illumination light emitted by the illumination light source 1 forms an angle of 45 degrees with the mirror surface of the half-transmitting and half-reflecting mirror 3 and forms an angle of 90 degrees with the incident optical axis of the optical fiber; the illumination light reflected by the dichroic mirror 4 and propagated toward the image pickup module is 45 ° to the mirror surface of the dichroic mirror 4 and 90 ° to the optical fiber incident optical axis, and the illumination light source 1 and the image pickup module are arranged side by side on the same side of the optical fiber incident optical axis.

The transmittance range of the half-mirror 3 for the illumination light with the wavelength of lambda 2 is set to be 40% -60%, and correspondingly, the reflectance range of the half-mirror 3 for the illumination light with the wavelength of lambda 2 is 60% -40%, so that a better half-mirror effect can be ensured; preferably, the half mirror 3 has a transmittance of 50% for illumination light with a wavelength λ 2 and a reflectance of 50% for illumination light with a wavelength λ 2.

The specific structure of the on-line monitoring system for the fiber end face provided in this embodiment may further include a collecting lens 6, the collecting lens 6 is disposed opposite to the fiber end face, and the half-transmitting mirror 3 and the dichroic mirror 4 are both disposed on a side of the collecting lens 6 opposite to the fiber end face, so that the collecting lens 6 can be used to collect the illumination light and the therapeutic light first, and reduce the light spot, the collecting lens 6 can make the diameter of the light spot, which is irradiated by the illumination light, of the fiber end face slightly larger than the fiber end face, and on the premise of monitoring the whole fiber end face, the light spot, which is irradiated by the illumination light, of the fiber end face is reduced as much as possible; the convergent lens 6 can enable the diameter of a light spot formed by the therapeutic light on the end face of the optical fiber to be smaller than the diameter of the fiber core, so that the therapeutic light is totally incident on the end face of the optical fiber, the therapeutic light can be fully utilized, and the utilization rate of the illumination light and the therapeutic light can be improved.

In the specific structure of the fiber end surface on-line monitoring system provided in this embodiment, an optical filter 7 may be further provided, the half-mirror 3 and the dichroic mirror 4 are both disposed on the light beam incident side of the optical filter 7, and the image acquisition module is disposed on the light beam emergent side of the optical filter 7, wherein the optical filter 7 is capable of filtering the therapeutic light. The treatment light reflected by the end face of the optical fiber is divided by the dichroic mirror 4 and the semi-transparent mirror 3, a small part of the treatment light possibly exists and is transmitted towards the image acquisition module along with the illumination light, the optical filter 7 is additionally arranged, the treatment light of the part can be filtered, the treatment light transmitted to the image acquisition module is reduced or even eliminated as far as possible, and the purity of the illumination light acquired by the image acquisition module is higher. Wherein, the filter 7 can be an absorption filter or a reflection filter, the absorption efficiency of the absorption filter to the treatment light with the wavelength of lambda 1 is more than 99%, and the transmittance to the illumination light with the wavelength of lambda 2 is more than 50%; the reflection filter has a reflectance of greater than 99% for therapeutic light having a wavelength λ 1 and a transmittance of greater than 50% for illumination light having a wavelength λ 2.

The specific structure of the image acquisition module can be provided with an imaging lens 8, a camera 9, an image processing unit 10 and a display terminal 11, the half mirror 3 and the dichroic mirror 4 are both arranged on the light beam incidence side of the imaging lens 8, the camera 9 is arranged on the light beam emergence side of the imaging lens 8, the display terminal 11 and the camera 9 are both in communication connection with the image processing unit 10, and the illumination light reflected by the end face of the optical fiber can penetrate through the imaging lens 8 after being separated by the dichroic mirror 4 and the half mirror 3, so as to image the end face of the optical fiber onto the photosensitive surface of the camera 9.

The image processing unit 10 can transmit the image of the end face of the optical fiber to the display terminal 11, and the display terminal 11 can display the image of the end face of the optical fiber for the user to view in real time. The camera 9 can convert an optical image into an electrical signal after receiving the illumination light reflected by the end face of the optical fiber, and the image processing unit 10 can analyze and process the electrical signal by adopting a software algorithm after reading the electrical signal so as to determine whether the optical fiber 12 is accurately installed in place, so that the optical fiber 12 can be adjusted in time when the optical fiber 12 is not installed in place; the image processing unit 10 is also able to determine parameters of the optical fiber 12 by means of an analysis process of the electrical signal, such as: core diameter of the optical fiber 12, etc., to avoid misuse of the optical fiber 12.

The positions of the filter 7 and the imaging lens 8 can be interchanged.

The therapeutic light source 2 may be a fiber coupled output or a free space output laser; the illumination source 1 may be a fiber-coupled-out or free-space-out light source, including but not limited to a fiber-coupled-out laser diode or LED, a free-space-out laser diode or LED, and the like.

The embodiment also provides laser medical equipment which comprises the optical fiber end face online monitoring system.

It should be noted that, in the present embodiment, the fiber end surface online monitoring system is integrated into the laser medical device, so that the treatment effect and the safety of the laser medical device can be improved, and medical accidents can be reduced.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An optical fiber end surface on-line monitoring system is characterized by comprising a lighting source (1), a treatment light source (2), a semi-transparent and semi-reflective mirror (3), a dichroic mirror (4) and an image acquisition module;

the semi-transparent semi-reflecting mirror (3) is arranged between the illumination light source (1) and the optical fiber end face, the dichroic mirror (4) is arranged between the treatment light source (2) and the optical fiber end face, and the semi-transparent semi-reflecting mirror (3) and the dichroic mirror (4) are respectively arranged between the optical fiber end face and the image acquisition module;

the center wavelength of the therapeutic light emitted by the therapeutic light source (2) is different from the center wavelength of the illuminating light emitted by the illuminating light source (1), and the half-transmitting mirror (3) can transmit part of the illuminating light and reflect part of the illuminating light; the dichroic mirror (4) separates the illumination light from the treatment light and propagates the illumination light towards the image acquisition module.

2. The fiber-optic endface online monitoring system of claim 1, wherein the illumination light forms a spot on the fiber-optic endface capable of covering the fiber-optic endface.

3. The fiber end face on-line monitoring system according to claim 1, wherein the illumination light source (1), the half mirror (3), the dichroic mirror (4) and the fiber end face are sequentially arranged along the propagation direction of the illumination light, the treatment light source (2), the dichroic mirror (4) and the fiber end face are sequentially arranged along the propagation direction of the treatment light, the fiber end face, the dichroic mirror (4), the half mirror (3) and the image acquisition module are sequentially arranged along the return propagation direction of the illumination light, and the half mirror (3) and the treatment light source (2) are respectively disposed opposite to the two side mirror faces of the dichroic mirror (4); the dichroic mirror (4) has a high transmittance for the illumination light and a high reflectance for the treatment light.

4. The fiber-optic endface online monitoring system according to claim 3, characterized in that the fiber-optic endface online monitoring system further comprises a waste light absorber (5), the waste light absorber (5) being opposite to the mirror surface of the half mirror (3) facing the illumination light source, and the waste light absorber (5) being used for absorbing the illumination light reflected by the half mirror (3).

5. The fiber end face on-line monitoring system according to claim 1, wherein the illumination light source (1), the half mirror (3) and the fiber end face are sequentially arranged along the propagation direction of the illumination light, the treatment light source (2), the dichroic mirror (4), the half mirror (3) and the fiber end face are sequentially arranged along the propagation direction of the treatment light, the illumination light source (1) and the dichroic mirror (4) are respectively arranged opposite to the two side mirror faces of the half mirror (3), and the fiber end face, the half mirror (3), the dichroic mirror (4) and the image acquisition module are sequentially arranged along the return propagation direction of the illumination light; the dichroic mirror (4) has a high reflectance for the illumination light and a high transmittance for the treatment light.

6. The fiber-optic endface on-line monitoring system according to any one of claims 1-5, wherein the dichroic mirror (4) is angled with respect to the fiber-optic incident optical axis in the range of 40 ° to 50 °;

and/or the included angle between the semi-transparent semi-reflecting mirror (3) and the incident optical axis of the optical fiber ranges from 40 degrees to 50 degrees;

and/or the transmittance range of the half mirror (3) to the illumination light is 40-60%.

7. The fiber-optic endface online monitoring system according to any one of claims 1-5, characterized in that it further comprises a converging lens (6), the converging lens (6) being opposite to the fiber-optic endface, and the half-mirror (3) and the dichroic mirror (4) being located on the side of the converging lens (6) facing away from the fiber-optic endface.

8. The fiber-optic endface online monitoring system according to any one of claims 1-5, further comprising an optical filter (7) for filtering the therapeutic light, wherein the half-mirror (3) and the dichroic mirror (4) are both disposed on a beam incident side of the optical filter (7), and the image acquisition module is disposed on a beam exit side of the optical filter (7).

9. The fiber-optic endface online monitoring system according to any one of claims 1-5, wherein the image acquisition module comprises an imaging lens (8), a camera (9), an image processing unit (10) and a display terminal (11), the half mirror (3) and the dichroic mirror (4) are both disposed on a beam incident side of the imaging lens (8), and the camera (9) is disposed on a beam emergent side of the imaging lens (8); the camera (9) and the display terminal (11) are in communication connection with the image processing unit (10).

10. A laser medical device comprising the fiber-optic endface on-line monitoring system of any one of claims 1-9.

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