CN209895098U - Light source switching multiplexing unit coaxiality debugging system - Google Patents
Light source switching multiplexing unit coaxiality debugging system Download PDFInfo
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- CN209895098U CN209895098U CN201920684228.5U CN201920684228U CN209895098U CN 209895098 U CN209895098 U CN 209895098U CN 201920684228 U CN201920684228 U CN 201920684228U CN 209895098 U CN209895098 U CN 209895098U
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Abstract
The utility model relates to a light source switches multiplexing unit axiality debug system for the adjustment of multi-wavelength sharing system axiality, multi-wavelength sharing system includes light source switches multiplexing unit, this debug system includes super continuous spectrum laser source, off-axis parabolic mirror, facula imaging device; the supercontinuum laser light source is used for being arranged at the light source incidence side of the multi-wavelength shared system and used for providing a reference light source for the light source switching multiplexing unit, so that the reference light source is incident to pass through the central shaft of the multi-wavelength shared system and horizontally emitted after passing through the light source switching multiplexing unit; the off-axis parabolic reflector is arranged in the direction of the outgoing light beam of the light source switching multiplexing unit and used for reflecting the outgoing light beam of the light source switching multiplexing unit; and the light spot imaging device is arranged at the focal position of the off-axis parabolic reflector and is used for converging the reflected light beams of the off-axis parabolic reflector into focused light spots. The utility model discloses the regulation precision is high, arranges in a flexible way, is applicable to the quick adjustment of various high accuracy multi-wavelength sharing system axiality.
Description
Technical Field
The utility model belongs to the technical field of multi-wavelength laser beam axiality is adjusted, concretely relates to light source switches multiplexing unit axiality debug system.
Background
At present, the coaxiality adjusting technology of multi-wavelength laser beams has relatively common requirements and applications in the fields of scientific instrument manufacturing and scientific research. For example, a multi-band response fluorescence spectrometer, or a microscopic imaging device or measurement device requiring multi-wavelength calibration, requires strict alignment for switching optical path systems of different wavelengths.
Common prior art solutions include lens focusing and far field testing. The lens focusing method mostly uses a plurality of laser light sources with single wavelength as reference light sources, but errors are easily introduced when the plurality of light sources are manually or automatically switched, so that the subsequent debugging precision is reduced. The conventional mirror at the beam converging portion would result in a position sensitive incident beam, inconvenient use, and reduced tuning accuracy. If the mode of the convex lens is adopted for convergence, the method is only suitable for accurate calibration of single wavelength, and chromatic aberration is introduced by switching the wavelength, so that the debugging accuracy is reduced.
The far-field test method needs to make the light beam reach a quite long distance, needs to artificially judge the adjusting effect, has very large error, high field requirement and is inconvenient to use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light source switches multiplexing unit axiality debug system to realize the quick accurate debugging of the axiality of multi-wavelength light source switching multiplexing unit in the system.
The utility model provides a light source switches multiplexing unit axiality debug system for the adjustment of multi-wavelength sharing system axiality, multi-wavelength sharing system includes light source switches multiplexing unit, this debug system includes super continuous spectrum laser source, off-axis parabolic mirror, facula imaging device;
the supercontinuum laser light source is used for being arranged at the light source incidence side of the multi-wavelength shared system and used for providing a reference light source for the light source switching multiplexing unit, so that the reference light source is incident to pass through the central shaft of the multi-wavelength shared system and horizontally emitted after passing through the light source switching multiplexing unit;
the off-axis parabolic reflector is arranged in the direction of the outgoing light beam of the light source switching multiplexing unit and used for receiving and reflecting the outgoing light beam of the light source switching multiplexing unit;
and the light spot imaging device is arranged at the focal position of the off-axis parabolic reflector and is used for converging the reflected light beams of the off-axis parabolic reflector into focused light spots.
Furthermore, the debugging system also comprises a five-dimensional adjusting platform, wherein the five-dimensional adjusting platform is connected with a light source output tail fiber of the supercontinuum laser light source and is used for accurately adjusting the incident direction of the reference light source so as to enable the incident light beam to coincide with the central axis of the multi-wavelength sharing system.
Further, the five-dimensional adjusting platform adjusts the three directions of the light source output tail fiber X, Y, Z, and the pitch and yaw directions, so that the incident light beam coincides with the central axis of the multi-wavelength sharing system.
Furthermore, the surface of the off-axis parabolic reflector is plated with a metal aluminum reflecting film, and laser beams with the wavelength of 0.45-20 microns are reflected through the metal aluminum reflecting film.
Further, the focal length of the off-axis parabolic mirror is 1 m.
Further, the light spot imaging device adopts a near infrared or visible light band CCD.
Furthermore, the debugging system also comprises a light spot display device, wherein the light spot display device is used for displaying the relative spatial position of the focusing light spot so as to enable the light source switching multiplexing unit to carry out coaxiality debugging in the multi-wavelength sharing system.
Compared with the prior art, the beneficial effects of the utility model are that: the coaxial multi-wavelength common system is simple and convenient to operate, high in adjusting precision and flexible in arrangement, is suitable for quickly adjusting the coaxiality of various high-precision multi-wavelength common systems, and can be widely applied to the fields of precision instrument manufacturing, scientific research production and the like.
Drawings
Fig. 1 is the structure diagram of the coaxiality debugging system for the light source switching multiplexing unit of the present invention.
Fig. 2 is a cross-sectional view of the light source switching multiplexing unit coaxiality debugging system of the present invention;
FIG. 3 is a schematic diagram of the coaxiality test of the coaxiality debugging system of the light source switching multiplexing unit of the present invention;
fig. 4 is a flowchart of an embodiment of the coaxiality debugging system for a light source switching multiplexing unit according to the present invention.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
Referring to fig. 1 and fig. 2, the present embodiment provides a light source switching multiplexing unit coaxiality debugging system for adjusting the coaxiality of a multi-wavelength shared system, where the multi-wavelength shared system includes a light source switching multiplexing unit 1 (the light source switching multiplexing unit is placed in a system optical path, and a device is selected according to a currently used wavelength, so as to reflect a laser beam in a corresponding wavelength band), and the debugging system includes a supercontinuum laser light source 2, a (large-aperture) off-axis parabolic mirror 3, and a light spot imaging device 4; the supercontinuum laser light source 2 is arranged at the light source incidence side of the multi-wavelength shared system and used for providing a reference light source for the light source switching multiplexing unit 1, so that the reference light source is incident to pass through a central shaft 7 (system main optical axis) of the multi-wavelength shared system and horizontally emitted after passing through the light source switching multiplexing unit; the off-axis parabolic reflector 3 is arranged in the direction of the outgoing beam of the light source switching multiplexing unit 1, and is used for receiving and reflecting the outgoing beam of the light source switching multiplexing unit 1 (the outgoing beam is incident to the mirror surface along the direction of the optical axis of the off-axis parabolic reflector); the light spot imaging device 4 is arranged at the focal position of the off-axis parabolic mirror 3 and is used for converging the reflected light beam of the off-axis parabolic mirror 3 into a focused light spot. Fig. 3 shows a schematic diagram of the coaxiality test, where Δ θ is a variation value of an incident angle and Δ L is a variation value of a displacement. The off-axis parabolic reflector is based on the principle of a paraboloid, can convert light emitted by a point light source into parallel-propagating light beams, and can also focus parallel-incident collimated light onto a focal point.
The implementation eliminates the influence of factors of artificial subjective judgment as much as possible through a light spot data acquisition mode, the used super-continuum spectrum light source and the off-axis parabolic reflector effectively avoid the influence of light path change caused by wavelength conversion, the source of errors is reduced, and the coaxiality adjusting precision of an angle second level can be achieved by selecting the parabolic reflector with a certain focal length and the light spot imaging device with proper resolution. The coaxial multi-wavelength common system is simple and convenient to operate, high in adjusting precision and flexible in arrangement, is suitable for quickly adjusting the coaxiality of various high-precision multi-wavelength common systems, and can be widely applied to the fields of precision instrument manufacturing, scientific research production and the like.
In this embodiment, the debugging system further includes a five-dimensional adjusting platform 5, and the five-dimensional adjusting platform 5 is connected to the light source output pigtail 21 of the supercontinuum laser light source 2, and is used for accurately adjusting the incident direction of the reference light source, so that the incident light beam coincides with the central axis 7 of the multi-wavelength shared system, and is suitable for high-precision universal adjustment.
In the present embodiment, the five-dimensional adjustment stage 5 adjusts three directions, the pitch direction and the yaw direction of the light source output pigtail 21X, Y, Z, so that the incident light beam coincides with the central axis of the multi-wavelength shared system.
In this embodiment, the surface of the off-axis parabolic reflector 3 is plated with a metal aluminum reflective film, and the metal aluminum reflective film reflects the laser beam with a wavelength of 0.45 μm to 20 μm.
In this embodiment, the focal length of the mirror surface of the off-axis parabolic reflector 3 is selected according to the required debugging precision, and the aperture of the parabolic reflector can cover the diameter of the outgoing beam.
In this embodiment, the light spot imaging device 4 may use a near infrared/visible light band CCD to realize high-precision and high-resolution light spot monitoring.
In this embodiment, the adjustment accuracy of the debugging system mainly depends on the focal length of the off-axis parabolic mirror and the resolution of the CCD, considering that the full width at half maximum of an image clearly resolvable by a human eye is 3.5 pixels, 7 pixels are spaced between two points and can be easily identified, each pixel is calculated according to 1.4 μm, the off-axis parabolic mirror with the focal length of 1m is used, and the adjustment of the parallelism of an incident light beam can reach 2.06 ″, which is enough to meet the requirement of scientific research instruments with high accuracy requirements.
In this embodiment, the debugging system further includes a light spot display device 6, where the light spot display device 6 is used to display the relative spatial position of the focused light spot, so that the light source switching multiplexing unit 1 can perform coaxiality debugging in the multi-wavelength shared system.
Referring to fig. 4, the method for debugging the coaxiality of the light source switching multiplexing unit by using the debugging system includes:
providing a reference light source to a light source switching multiplexing unit through a supercontinuum laser light source, enabling the reference light source to enter a central shaft of a multi-wavelength shared system (a mechanism to be debugged), and horizontally emitting the reference light source after passing through the light source switching multiplexing unit; (reference light source adjustment, coarse adjustment via mechanism to be debugged)
Receiving and reflecting the emergent light beam of the light source switching multiplexing unit by an off-axis parabolic reflector; (off-axis parabolic mirror receives and reflects light beams)
Step three, converging the reflected light beams of the off-axis parabolic reflector into focused light spots through a light spot imaging device arranged at the focal position of the off-axis parabolic reflector;
and fourthly, displaying the relative spatial position of the focused light spot through a light spot display device (near infrared/visible light band CCD) so as to enable the light source switching multiplexing unit to carry out coaxiality debugging in the multi-wavelength sharing system. (CCD at focus monitoring light spot)
The method adopts a supercontinuum laser light source as a reference light source, can provide light source irradiation for the light source switching multiplexing unit under the condition of not replacing the light source, realizes no light source switching debugging, receives light beams led out by the light source switching multiplexing unit through a large-caliber off-axis parabolic reflector, observes the space position of a focused light spot by using a near infrared/visible light band CCD, and finally realizes high-precision coaxiality rapid debugging. The coaxial multi-wavelength common system is simple and convenient to operate, high in adjusting precision and flexible in arrangement, is suitable for quickly adjusting the coaxiality of various high-precision multi-wavelength common systems, and can be widely applied to the fields of precision instrument manufacturing, scientific research production and the like.
In this embodiment, the first step includes:
the five-dimensional adjusting platform adjusts three directions of the light source output tail fiber X, Y, Z, and the pitching and deflecting directions, so that the incident light beam coincides with the central axis of the multi-wavelength sharing system.
In this embodiment, the fourth step includes:
the spatial position of the focus of each reflected light beam is overlapped by adjusting the azimuth pitching of each path of wavelength selection device of the light source switching multiplexing unit, which shows that the light source switching multiplexing unit is adjusted in place, and the coaxial output of each path of light beam is realized.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A light source switches over the debugging system of the axiality of the multiplexing unit, is used in the axiality of the multi-wavelength shared system to regulate, the said multi-wavelength shared system includes the light source switches over the multiplexing unit, characterized by, including the laser source of the super-continuum spectrum, off-axis parabolic reflector, facula imaging device;
the supercontinuum laser light source is used for being arranged at the light source incidence side of the multi-wavelength shared system and providing a reference light source for the light source switching multiplexing unit, so that the reference light source is incident to pass through the central shaft of the multi-wavelength shared system and horizontally emitted after passing through the light source switching multiplexing unit;
the off-axis parabolic reflector is arranged in the direction of the outgoing light beam of the light source switching multiplexing unit and used for receiving and reflecting the outgoing light beam of the light source switching multiplexing unit;
the light spot imaging device is arranged at the focal position of the off-axis parabolic reflector and used for converging the reflected light beams of the off-axis parabolic reflector into focused light spots.
2. The light source switching multiplexing unit coaxiality debugging system according to claim 1, further comprising a five-dimensional adjusting platform, connected to the light source output pigtail of the supercontinuum laser light source, for precisely adjusting the incident direction of the reference light source so that the incident light beam coincides with the central axis of the multi-wavelength sharing system.
3. The system for debugging the coaxiality of the light source switching multiplexing unit of claim 2, wherein the five-dimensional adjusting platform adjusts the three directions of the light source output pigtail X, Y, Z and the pitch and yaw directions so that the incident light beam coincides with the central axis of the multi-wavelength shared system.
4. The light source switching multiplexing unit coaxiality debugging system according to claim 1, wherein a metal aluminum reflective film is plated on the surface of the off-axis parabolic reflector, and the metal aluminum reflective film reflects the laser beam with the wavelength of 0.45 μm to 20 μm.
5. The light source switching multiplexing unit axiality debugging system of claim 4 wherein the off-axis parabolic mirror has a focal length of 1 m.
6. The light source switching multiplexing unit coaxiality debugging system according to claim 1, wherein the light spot imaging device employs a near-infrared or visible light band CCD.
7. The light source switching multiplexing unit coaxiality debugging system according to any one of claims 1 to 6, further comprising a light spot display device for displaying the relative spatial position of the focusing light spot, so that the light source switching multiplexing unit can perform coaxiality debugging in the multi-wavelength shared system.
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| CN201920684228.5U CN209895098U (en) | 2019-05-14 | 2019-05-14 | Light source switching multiplexing unit coaxiality debugging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109262A (en) * | 2019-05-14 | 2019-08-09 | 北京东方锐镭科技有限公司 | Light source switches Multiplexing Unit concentricity debugging system and method |
| CN114234857A (en) * | 2021-12-20 | 2022-03-25 | 上海久航电子有限公司 | Visible and infrared multi-optical-axis parallelism detection device and method |
-
2019
- 2019-05-14 CN CN201920684228.5U patent/CN209895098U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110109262A (en) * | 2019-05-14 | 2019-08-09 | 北京东方锐镭科技有限公司 | Light source switches Multiplexing Unit concentricity debugging system and method |
| CN110109262B (en) * | 2019-05-14 | 2024-02-23 | 北京东方锐镭科技有限公司 | Coaxiality debugging system and method for light source switching multiplexing unit |
| CN114234857A (en) * | 2021-12-20 | 2022-03-25 | 上海久航电子有限公司 | Visible and infrared multi-optical-axis parallelism detection device and method |
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