CN212327207U

CN212327207U - Laser treatment system

Info

Publication number: CN212327207U
Application number: CN202020498982.2U
Authority: CN
Inventors: 梁姗姗; 康佳静; 李新宇; 张军
Original assignee: National Sun Yat Sen University
Current assignee: Sun Yat Sen University; National Sun Yat Sen University
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2021-01-12
Anticipated expiration: 2030-04-07

Abstract

The utility model relates to the technical field of laser treatment equipment, and provides a laser treatment system which comprises a first light transmission channel, a second light transmission channel, a third light transmission channel, a first dichroic mirror, a second dichroic mirror, a laser and an OCT system; the signal optical fiber of the OCT system is communicated with the second optical transmission channel; the first optical transmission channel has an inlet and an outlet; after being reflected, the light beam with the first wavelength in the signal optical fiber is emitted to the first dichroic mirror from the inlet and then is reflected into the second light transmission channel; the light beam with the second wavelength enters the first optical transmission channel from the outlet and then enters the third optical transmission channel; the light beam of the third wavelength emitted by the laser enters the first optical transmission channel from the entrance and exits from the exit. The light beams of the first wavelength, the second wavelength and the third wavelength do not interfere with each other.

Description

Laser treatment system

Technical Field

The utility model belongs to the technical field of laser treatment equipment, more specifically say, relate to a laser treatment system.

Background

In modern therapeutic approaches, the Optical Coherence Tomography (OCT) imaging technology is widely used (the principle of OCT can be found in [ Li culture, ARRONG, Dingxihua, Lepeng ] research progress of Fourier domain Optical Coherence Tomography [ J ] Chinese laser, 2018,45(02):153 and 163 ]; the principle of OCT can also be found in [ J.A.IZatt, M.A.Choma.the theory of OCT of Optical Coherence Tomography [ M ] Springer International Publishing,2008 ], the principle of OCT can also be found in [ Huangang D, Swang E A, Lin C P, et al. Referring to fig. 1, the principle is: light emitted by the light source 12 is divided into two beams through the optical fiber coupler 13, one beam is reflected by the reference arm 14 and then returns, the other beam is transmitted to a target object through the signal optical fiber 11 and is scattered by the target object and then returns along the signal optical fiber 11, and the two returned beams interfere again to form an image which is detected by the photoelectric detector 15 and is acquired. The endoscope is a commonly used observation apparatus, and the endoscope is generally used alone, and cannot be used together with the OCT system 1; laser therapy is common, but a target object is observed through the OCT system 1 or the target object is observed through the endoscope, and the OCT system 1, the endoscope and the laser therapy cannot be used simultaneously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a laser treatment system to solve OCT system, endoscope and the unable simultaneous use technical problem of laser treatment who exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a laser therapy system comprising a first light transmission channel, a second light transmission channel, a third light transmission channel, a first dichroic mirror, a second dichroic mirror, a laser, and an OCT system; the signal optical fiber of the OCT system is communicated with the second optical transmission channel; the first optical transmission channel has an inlet and an outlet; the first dichroic mirror and the second dichroic mirror are respectively arranged outside the inlet; the light beam with the first wavelength in the signal optical fiber sequentially passes through the second light transmission channel and the first dichroic mirror, then enters the first light transmission channel from the inlet and is emitted to a target object from the outlet to generate scattered light, and the scattered light beam with the first wavelength enters the first light transmission channel from the outlet and is emitted to the first dichroic mirror from the inlet and then is reflected to enter the second light transmission channel; a light beam with a second wavelength enters the first light transmission channel from the outlet, then exits from the inlet, passes through the first dichroic mirror and then reaches the second dichroic mirror to be reflected into the third light transmission channel; and the light beam with the third wavelength emitted by the laser enters the first optical transmission channel from the inlet and is emitted from the outlet.

Further, the light beam with the third wavelength emitted by the laser sequentially passes through the second dichroic mirror and the first dichroic mirror, enters the first light transmission channel from the inlet, and exits from the outlet.

Further, the reflecting surface of the first dichroic mirror is arranged in parallel with the reflecting surface of the second dichroic mirror.

Further, the first dichroic mirror is located between the inlet and the second dichroic mirror.

Further, the first optical transmission channel extends in a straight direction.

Further, a photoelectric sensor is arranged in the third light transmission channel.

Furthermore, an ocular lens is arranged between the photoelectric sensor and the second dichroic mirror, and an objective lens is arranged in the outlet.

Further, the laser has a first optical fiber disposed in parallel with the first optical transmission channel and extending to the exit.

Further, an illumination assembly is arranged in the first light transmission channel.

Further, the illumination assembly includes a second optical fiber routed along the first optical transmission channel and extending to the exit port, a light emitting member, and an optical coupler for coupling light from the light emitting member into the second optical fiber.

The utility model provides a laser treatment system's beneficial effect lies in: compared with the prior art, the utility model provides a laser treatment system, the path of light beam is as follows in the signal fiber among the OCT system: 【1】 A first wavelength light beam in a signal optical fiber of the OCT system enters a second optical transmission channel, then is reflected by a first dichroic mirror and enters the first optical transmission channel from an inlet [ 2 ] a first wavelength light beam entering the first optical transmission channel from the inlet is emitted from an outlet to irradiate/scan a target object [ 3 ] first wavelength light beam scattering light of the target object enters the first optical transmission channel from the outlet [ 4 ] a first wavelength light beam entering the first optical transmission channel from the outlet is emitted from the inlet to the first dichroic mirror and is reflected by the first dichroic mirror into the second optical transmission channel [ 5 ] the first wavelength light beam reflecting light reflected into the second optical transmission channel enters the signal optical fiber for the OCT system to analyze (such as generating an image of the target object); the path of the second wavelength beam (for endoscopic observation) is as follows: 【1】 A second wavelength light beam scattered by an external illuminator (generating a second wavelength light beam) irradiating a target object enters a first light transmission channel from an outlet [ 2 ], the second wavelength light beam entering the first light transmission channel from the outlet is emitted to a first dichroic mirror from an inlet and passes through the first dichroic mirror to reach a second dichroic mirror [ 3 ], and the second wavelength light beam reaching the second dichroic mirror is reflected by the second dichroic mirror to enter a third light transmission channel (for observation of a user endoscope); the third wavelength emitted by the laser enters the first optical transmission channel from the inlet and then is emitted from the outlet for laser treatment; only the light beam with the first wavelength enters the second light transmission channel, only the light beam with the second wavelength enters the third light transmission channel, and the light beam with the third wavelength irradiates the target object for treatment; the light beams of the first wavelength, the second wavelength, and the third wavelength do not interfere with each other, so that the OCT system (using the light beam of the first wavelength), the endoscope (using the light beam of the second wavelength for observation), and the laser treatment (using the light beam of the third wavelength) do not interfere with each other enough, and therefore the OCT system and the endoscope can perform scanning detection without interfering with the laser while the laser treatment is performed by the laser.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of a laser treatment system provided by an embodiment of the present invention;

fig. 2 is a schematic view of a first optical transmission channel, a second optical transmission channel, and a third optical transmission channel according to an embodiment of the present invention;

fig. 3 is a schematic front view of a first optical transmission channel according to an embodiment of the present invention;

fig. 4 is a right side schematic view of a first optical transmission channel according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an installation of a laser according to an embodiment of the present invention;

fig. 6 is a first schematic diagram of a lens in a first optical transmission channel according to an embodiment of the present invention;

fig. 7 is a second schematic diagram of a lens in a first optical transmission channel according to an embodiment of the present invention;

fig. 8 is a third schematic view of a lens in the first optical transmission channel according to an embodiment of the present invention;

fig. 9 is a first schematic view of an objective lens provided in an embodiment of the present invention;

fig. 10 is a second schematic view of an objective lens provided in an embodiment of the present invention;

fig. 11 is a third schematic view of an objective lens provided in an embodiment of the present invention;

fig. 12 is a fourth schematic view of the objective lens according to the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-an OCT system; 11-a signal fiber; 12-a light source; 13-a fiber coupler; 14-a reference arm; 15-a photodetector; 2-a laser; 21-a first optical fiber; 31 — a first optical transmission channel; 311-an inlet; 312-an outlet; 32-a second optical transmission channel; 33-a third optical transmission channel; 341-first dichroic mirror; 342-a second dichroic mirror; 41-a photosensor; 42-an eyepiece; 43-objective lens; 51-a collimator; 52-scanning galvanometer; 53-a focusing lens; 6-an illumination assembly; 61-a second optical fiber; 62-a light emitting member; 63-an optical coupler; 7-turning prism.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4, a laser treatment system according to the present invention will now be described. The laser treatment system comprises a first light transmission channel 31, a second light transmission channel 32, a third light transmission channel 33, a first dichroic mirror 341 (dichroic mirror: reflecting a light beam of a predetermined wavelength/predetermined wavelength range, and directly transmitting light beams of other wavelengths), a second dichroic mirror 342, a laser 2, and an OCT system 1; the signal optical fiber 11 of the OCT system 1 communicates with the second optical transmission channel 32; the first optical transmission channel 31 has an inlet 311 and an outlet 312 (when the laser treatment system is in operation, the outlet 312 faces the object to be targeted); the first dichroic mirror 341 and the second dichroic mirror 342 are respectively disposed outside the inlet 311; the light beam of the first wavelength in the signal fiber 11 sequentially passes through the second light transmission channel 32 and the first dichroic mirror 341 and then enters the first light transmission channel 31 from the inlet 311 and exits from the outlet 312 to the target object to generate scattered light, and the scattered light beam of the first wavelength enters the first light transmission channel 31 from the outlet 312 and exits from the inlet 311 to the first dichroic mirror 341 and then is reflected (the light beam of the first wavelength is reflected by the first dichroic mirror 341) and enters the second light transmission channel 32; the light beam of the second wavelength enters the first light transmission channel 31 from the outlet 312, then exits from the inlet 311, and passes through (the first dichroic mirror 341 does not absorb the light beam of the second wavelength) the first dichroic mirror 341 before reaching the second dichroic mirror 342 to be reflected (the light beam of the second wavelength is reflected by the second dichroic mirror 342) to enter the third light transmission channel 33; the light beam of the third wavelength emitted from the laser 2 enters the first optical transmission channel 31 from the entrance 311 and exits from the exit 312.

Thus, the path of the light beam in the signal fiber 11 in the OCT system 1 is as follows: 【1】 After entering the second optical transmission channel 32, the first wavelength light beam in the signal optical fiber 11 of the OCT system 1 is reflected by the first dichroic mirror 341 and enters the first optical transmission channel 31 from the inlet 311 [ 2 ] the first wavelength light beam entering the first optical transmission channel 31 from the inlet 311 exits from the outlet 312 to irradiate/scan the target object to generate scattering [ 3 ] the scattered light of the first wavelength light beam on the target object enters the first optical transmission channel 31 from the outlet 312 [ 4 ] the first wavelength light beam entering the first optical transmission channel 31 from the outlet 312 exits from the inlet 311 to the first dichroic mirror 341 and is reflected by the first dichroic mirror 341 into the second optical transmission channel 32 [ 5 ] the first wavelength light beam reflected light reflected into the second optical transmission channel 32 enters the signal optical fiber 11 for analysis by the OCT system 1; the path of the second wavelength beam (for endoscopic observation) is as follows: 【1】 A second wavelength light beam scattered by an external light emitter (generating a second wavelength light beam; the second wavelength light beam may be visible light, and may be natural light) irradiated on the target object enters the first light transmission channel 31 from the outlet 312 [ 2 ] the second wavelength light beam entering the first light transmission channel 31 from the outlet 312 exits from the inlet 311 to the first dichroic mirror 341, passes through the first dichroic mirror 341, and reaches the second dichroic mirror 342 [ 3 ], and the second wavelength light beam reaching the second dichroic mirror 342 is reflected by the second dichroic mirror 342 to enter the third light transmission channel 33 (for observation by the user endoscope); the third wavelength emitted by the laser 2 enters the first optical transmission channel 31 from the inlet 311 and then exits from the outlet 312 for laser treatment; only the light beam with the first wavelength enters the second light transmission channel 32, only the light beam with the second wavelength enters the third light transmission channel 33, and the light beam with the third wavelength irradiates the target object for treatment; the light beams of the first wavelength, the second wavelength, and the third wavelength do not interfere with each other, so that the OCT system 1 (using the light beam of the first wavelength), the endoscope (using the light beam of the second wavelength for observation), and the laser 2 (using the light beam of the third wavelength) do not interfere with each other enough, and therefore the OCT system 1 and the endoscope can scan and detect the target object without interfering with the laser 2 while the laser 2 is performing laser treatment.

Optionally, in an embodiment, the first wavelength is a specific value of wavelength, and the first wavelength may also be a wavelength within a predetermined wavelength band.

Optionally, in an embodiment, the second wavelength is a specific value of wavelength, and the first wavelength may also be a wavelength within a predetermined wavelength band.

Optionally, in an embodiment, the third wavelength is a specific value of wavelength, and the first wavelength may also be a wavelength within a predetermined wavelength band.

Optionally, in an embodiment, the laser 2 may be any one of a semiconductor laser, Nd: YAG, and CO2 laser, and the common wavelength may be any one of 980nm, 1470nm, and 10.6 um. Specifically, in one embodiment, the laser 2 generates infrared light.

Optionally, in one embodiment, the first light transmission channel 31 is tubular. Specifically, in one embodiment, the tubular body is metal. Alternatively, in one embodiment, the first optical transmission channel 31 is inserted into the test object and aimed at the target object through the exit 312 for observation.

Optionally, in one embodiment, the second light transmission channel 32 is tubular. Specifically, in one embodiment, the tubular body is metal.

Optionally, in one embodiment, the third light transmission channel 33 is tubular. Specifically, in one embodiment, the tubular body is metal.

Optionally, in one embodiment, the first light transmission channel 31 is circular in cross-section. Thus, production is easy, and the light beam is not easily hindered from propagating along the first light transmission channel 31. And the first optical transmission channel 31 having a circular cross section is not easily scratched to a user when it is in contact with a human body.

Optionally, in one embodiment, the second light transmission channel 32 is circular in cross-section. In this way, production is easy, and the light beam propagation along the second light transmission channel 32 is not easily hindered. And the second light transmission channel 32 having a circular cross section is not easily scratched when it is in contact with a human body.

Optionally, in one embodiment, the third light transmission channel 33 is circular in cross-section. In this way, production is easy, and the light beam is not easily obstructed from propagating along the third light transmission channel 33. And the third optical transmission channel 33 having a circular cross section is not easily scratched to a user when it is in contact with a human body.

Optionally, in one embodiment, a collimator 51 is disposed within the second light transmission channel 32. In this way, when the light beam of the signal fiber 11 enters the second optical transmission channel 32 and passes through the collimator 51, the light spot becomes more uniform.

Optionally, in one embodiment, a scanning galvanometer 52 is further disposed within the second optical transmission channel 32. In this manner, the orientation of the light beam within second light transmission channel 32 can be changed by scanning galvanometer 52 to scan the image within the cross-section of second light transmission channel 32.

Optionally, in one embodiment, the scanning galvanometer 52 is a two-dimensional galvanometer. Thus, the two-dimensional galvanometer can adjust the direction of the light beam in two dimensions.

Optionally, in one embodiment, a focusing lens 53 is disposed within the second light transmission channel 32. In this way, when the light beam of the signal fiber 11 enters the second optical transmission channel 32 and passes through the focusing lens 53, the light spot can be focused.

Alternatively, in one embodiment, the laser 2 is triggered using a foot switch. Thus, the trigger is convenient.

Optionally, in an embodiment, the photodetector 15 is connected to a computer for analysis.

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, the light beam of the third wavelength emitted from the laser 2 sequentially passes through the second dichroic mirror 342 and the first dichroic mirror 341 (the second dichroic mirror 342 and the first dichroic mirror 341 cannot absorb the light beam of the third wavelength), enters the first light transmission channel 31 from the inlet 311, and exits from the outlet 312. In this manner, the light beam of the third wavelength emitted by the laser 2 is not affected by the first dichroic mirror 341 and the second dichroic mirror 342; in addition, the light beam of the third wavelength is also not affected by the light beam of the first wavelength reflected by the first dichroic mirror 341 and the light beam of the second wavelength reflected by the second dichroic mirror 342. Alternatively, in one embodiment, a first focusing mechanism is disposed on the laser beam path between laser 2 and second dichroic mirror 342. In this way, the size of the laser spot can be adjusted by the third wavelength laser beam emitted from the laser 2 through the first focusing mechanism, and the adjusted laser beam passes through the second dichroic mirror 342, so that the shape of the laser beam is effectively controlled. Specifically, in one embodiment, the first focus mechanism is a einzel lens and a motor that drives the einzel lens to move along the laser beam path. Specifically, in one embodiment, the einzel lens is a convex lens.

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, a reflective surface of the first dichroic mirror 341 is disposed in parallel with a reflective surface of the second dichroic mirror 342. In this way, the light flux emitted from the inlet 311 of the first optical transmission channel passes through the reflection surface of the first dichroic mirror 341 (the first wavelength light flux is reflected) and the reflection surface of the second dichroic mirror 342 (the second wavelength light flux is reflected), respectively, and the reflected first wavelength light flux and the reflected second wavelength light flux are less likely to cross each other and interfere with each other.

Optionally, in one embodiment, second light transmission channel 32 is at an angle of 45 ° to the reflective surface of first dichroic mirror 341. Therefore, the first dichroic mirror 341 is convenient to debug, and the installation is convenient.

Optionally, in one embodiment, second light transmission channel 32 is angled at 45 ° to the reflective surface of second dichroic mirror 342. Therefore, the second dichroic mirror 342 is convenient to debug and convenient to install.

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, a first dichroic mirror 341 is located between the inlet 311 and a second dichroic mirror 342. In this manner, it is convenient for the different light beams output from the first light transmission channel 31 through the inlet 311 to be brought into contact with the first dichroic mirror 341/the second dichroic mirror 342.

Further, referring to fig. 1 to 4, as an embodiment of the laser treatment system provided by the present invention, the first light transmission channel 31 extends in a straight line direction. Thus, the light beam is not easily blocked while being transmitted along the first light transmission channel 31.

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, a photoelectric sensor 41 is disposed in the third light transmission channel 33. In this manner, the photosensor 41 can acquire an avatar and obtain digital pictures/video. Alternatively, in one embodiment, the photosensor 41 may be a CCD (Charge coupled Device, Chinese full name: Charge coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor).

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, an eyepiece 42 is disposed between the photoelectric sensor 41 and the second dichroic mirror 342, and an objective 43 is disposed in the outlet 312. In this manner, the eyepiece 42 and the objective lens 43 cooperate to adjust the focal length to obtain a sharp image of the target transmitted by the second wavelength beam.

Further, referring to fig. 5, as an embodiment of the laser therapy system provided by the present invention, the laser 2 has a first optical fiber 21 disposed in parallel with the first optical transmission channel 31 and extending to the outlet 312. In this way, the light beam generated by the laser 2 can be directly transmitted into the outlet 312 through the first optical fiber 21 and then emitted from the outlet 312 for laser treatment, so that the loss of laser beam propagation is reduced. Optionally, in an embodiment, a turning prism 7 is disposed outside the outlet 312, so that the light beam (the light beam may be of the first wavelength or the second wavelength, and the exit direction of the light beam (the first wavelength or the second wavelength) exiting from the outlet 312 is changed by the turning prism 7) exiting from the outlet 312 can be converged with the light beam of the third wavelength output by the first optical fiber 21, so that the position of the beam processing output by the first optical fiber 21 is not shifted from the image observed by the OCT system 1/the photosensor 41.

Optionally, in an embodiment, a second focusing mechanism is disposed in the exit direction of the first optical fiber 21. In this way, the laser beam emitted from the first optical fiber 21 can be adjusted in focus position of the laser spot size by the second focusing mechanism. Specifically, in one embodiment, the second focus mechanism is a einzel lens and a motor that drives the einzel lens to move along the laser beam path. Specifically, in one embodiment, the einzel lens is a convex lens.

Alternatively, in one embodiment, a third focusing mechanism is disposed on the light beam path between the inlet 311 and the first dichroic mirror 341. In this way, the light beam (the light beam may be the first wavelength, the second wavelength, or the third wavelength) passing between the entrance 311 and the first dichroic mirror 341 can adjust the size of the light beam spot by the third focusing mechanism, and the shape of the light beam is effectively controlled. Specifically, in one embodiment, the third focus mechanism is a einzel lens and a motor that drives the einzel lens to move along the beam path. Specifically, in one embodiment, the einzel lens is a convex lens.

Further, referring to fig. 1 to 4, as an embodiment of the laser therapy system provided by the present invention, an illumination assembly 6 is disposed in the first light transmission channel 31. In this way, the illumination assembly 6 is capable of illuminating the target object. Specifically, in one embodiment, the illumination assembly 6 generates light waves of a second wavelength.

Further, referring to fig. 1 to 4, as an embodiment of the laser treatment system provided by the present invention, the illumination assembly 6 includes a second optical fiber 61 disposed along the first light transmission channel 31 and extending to the outlet 312, a light emitting element 62, and an optical coupler 63 for coupling light of the light emitting element 62 into the second optical fiber 61. In this manner, the light emitted from the light emitting member 62 enters the second optical fiber 61 through the optical coupler 63 and is transmitted to the outlet 312 for illumination.

Alternatively, in one embodiment, the light emitting member 62 is any one of a halogen lamp, a xenon lamp, and a light emitting diode.

Optionally, in an embodiment, the number of the second optical fibers 61 is multiple, and the multiple second optical fibers 61 are respectively arranged along the circumferential direction of the first optical transmission channel 31. In this manner, the plurality of second optical fibers 61 wound in the circumferential direction of the first optical transmission path 31 output more uniform light, facilitating irradiation of the target object.

Optionally, in one embodiment, the lighting assembly 6 includes an LED lamp disposed at the outlet 312 and a power source connected to the LED lamp. Therefore, the LED lamp can provide illumination when the power supply is switched on, and is very convenient.

Referring to fig. 6, in one embodiment, a plurality of field lenses are disposed in the first light transmission channel 31. Referring to fig. 7, in one embodiment, a plurality of Hopkins rod lenses are disposed in the first light transmission channel 31. Referring to fig. 8, in one embodiment, a single GRIN lens is disposed within the first optical transmission channel 31. Specifically, in one embodiment, the field lens, the Hopkins rod lens, and the GRIN lens gradually increase in luminous flux.

Referring to fig. 9, in one embodiment, a single GRIN lens is used for the objective lens 43. Referring to fig. 10, in one embodiment, the objective lens 43 employs three optical elements, which are a parallel flat plate, a plano-concave lens and a plano-convex lens in sequence (from left to right, and right towards the target object to be detected). Referring to fig. 11, in one embodiment, the objective lens 43 adopts three optical elements, which are a plano-concave lens, a plano-convex lens and a plano-convex lens in sequence (from left to right, and towards the target object to be detected). Referring to fig. 12, in one embodiment, the objective lens 43 adopts five optical elements, which are a plano-concave lens, a plano-convex lens, a parallel plate, a double cemented lens (a double cemented structure to suppress curvature of field, spherical aberration and chromatic aberration), and a parallel plate in sequence (from left to right, and towards the target object to be detected). Specifically, in one embodiment, the aberrations in the four objective lenses 43 are gradually reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A laser treatment system, characterized by: the OCT system comprises a first light transmission channel, a second light transmission channel, a third light transmission channel, a first dichroic mirror, a second dichroic mirror, a laser and an OCT system; the signal optical fiber of the OCT system is communicated with the second optical transmission channel; the first optical transmission channel has an inlet and an outlet; the first dichroic mirror and the second dichroic mirror are respectively arranged outside the inlet; the light beam with the first wavelength in the signal optical fiber sequentially passes through the second light transmission channel and the first dichroic mirror, then enters the first light transmission channel from the inlet and is emitted to a target object from the outlet to generate scattered light, and the scattered light beam with the first wavelength enters the first light transmission channel from the outlet and is emitted to the first dichroic mirror from the inlet and then is reflected to enter the second light transmission channel; a light beam with a second wavelength enters the first light transmission channel from the outlet, then exits from the inlet, passes through the first dichroic mirror and then reaches the second dichroic mirror to be reflected into the third light transmission channel; and the light beam with the third wavelength emitted by the laser enters the first optical transmission channel from the inlet and is emitted from the outlet.

2. The laser therapy system of claim 1, wherein: and a light beam with a third wavelength emitted by the laser sequentially passes through the second dichroic mirror and the first dichroic mirror, enters the first light transmission channel from the inlet and is emitted from the outlet.

3. The laser therapy system of claim 1, wherein: the reflecting surface of the first dichroic mirror is parallel to the reflecting surface of the second dichroic mirror.

4. The laser therapy system of claim 1, wherein: the first dichroic mirror is located between the inlet and the second dichroic mirror.

5. The laser therapy system of claim 1, wherein: the first optical transmission channel extends in a straight direction.

6. The laser therapy system of claim 1, wherein: and a photoelectric sensor is arranged in the third optical transmission channel.

7. The laser therapy system of claim 6, wherein: an ocular lens is arranged between the photoelectric sensor and the second dichroic mirror, and an objective lens is arranged in the outlet.

8. The laser therapy system of claim 1, wherein: the laser has a first optical fiber disposed in parallel with the first optical transmission channel and extending to the exit.

9. The laser therapy system of claim 1, wherein: and an illumination assembly is arranged in the first light transmission channel.

10. The laser therapy system according to claim 9, wherein: the illumination assembly includes a second optical fiber routed along the first optical transmission channel and extending to the exit port, a light emitting member, and an optical coupler for coupling light from the light emitting member into the second optical fiber.