CN112630893A - Non-contact high-efficiency light energy transmission method - Google Patents
Non-contact high-efficiency light energy transmission method Download PDFInfo
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- CN112630893A CN112630893A CN202011549537.5A CN202011549537A CN112630893A CN 112630893 A CN112630893 A CN 112630893A CN 202011549537 A CN202011549537 A CN 202011549537A CN 112630893 A CN112630893 A CN 112630893A
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- optical fiber
- aspheric
- optical
- efficiency
- transmission
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
Abstract
The invention relates to a non-contact high-efficiency light energy transmission method, belonging to the technical field of photoelectricity. The technical problems of difficulty in controlling aberration, unclear imaging and low coupling efficiency of the traditional optical fiber coupling method are solved. The method of the invention is that the light emitted by the emitting optical fiber is transmitted to another aspheric lens of the aspheric optical system in the form of parallel light through one aspheric lens of the aspheric optical system and then converged to the end surface of the receiving optical fiber to complete the transmission of light energy; the aspheric optical system and the optical fiber positioning device adopt an optical-mechanical integrated athermalization design, so that the focal length and the working distance are unchanged during high-temperature work, the coupling efficiency is not reduced, the stable transmission of optical fiber energy is ensured, and the efficient transmission of light energy is ensured. Meanwhile, the non-contact design with two independent bodies is adopted, the lens bodies are matched with parallel light, the matching precision is not required, and the assembly distance error between the two bodies has no influence on the coupling efficiency, so that the assembly difficulty is reduced, and the light energy transmission efficiency can be improved.
Description
Technical Field
The invention belongs to the technical field of photoelectricity, and particularly relates to a non-contact high-efficiency light energy transmission method.
Background
The optical fiber coupling method is a method for transmitting light energy, the optical fiber coupler is a device for connecting optical fibers, the optical fibers and an optical system, and light beams and the optical fibers can be butted by utilizing the optical fiber coupler so as to couple the light energy to the receiving optical fibers to the maximum extent, so that the light energy transmission efficiency of the whole optical fiber system is improved, and the optical fiber coupling method has important significance for photoelectric systems such as laser transmission, information transmission and the like.
The conventional optical fiber coupling method has the following defects that most couplers used in the method are as follows: (1) by adopting the design of a spherical system, the coupling efficiency can reach 92 percent theoretically. However, due to the influence of many factors, the phenomena of poor light beam focusing effect, increased aberration and light beam deformation, and unclear imaging can occur, which finally results in the reduction of coupling efficiency. (2) The athermal design is not performed, and the athermal design means that different thermal characteristics of optical materials and mechanical materials are utilized during system design, so that the systems compensate each other when the temperature is increased or decreased, and the optical system is ensured to keep a stable image surface position and stable image quality in a larger temperature range. The lack of athermal designs therefore does not always maintain good operating characteristics over temperature variations, resulting in a decrease in coupler efficiency. (3) The conventional coupler usually adopts a single structure due to the control of process manufacturing and cost, and the structure is very sensitive to the error of system assembly and the operation error of a user, so that the situations of misoperation or efficiency reduction are very easy to occur.
Disclosure of Invention
The invention provides a non-contact high-efficiency light energy transmission method, aiming at solving the technical problems of difficult aberration control, unclear imaging and low coupling efficiency of the traditional optical fiber coupling method.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the invention provides a non-contact high-efficiency light energy transmission method, which comprises the following steps:
the light emitted by the emitting optical fiber is transmitted to the other aspheric lens of the aspheric optical system in a parallel light mode through one aspheric lens of the aspheric optical system and then converged to the end face of the receiving optical fiber to complete the transmission of light energy;
the transmitting optical fiber and the receiving optical fiber are respectively positioned at two focuses of the aspheric optical system through an optical fiber plugging channel of the optical fiber positioning device;
the aspheric optical system and the optical fiber positioning device adopt an optical-mechanical integrated athermalization design, so that the focal length and the working distance are unchanged when light energy is transmitted under a high-temperature condition, the coupling efficiency is not reduced, the stable transmission of the energy of the optical fiber is ensured, and the efficient transmission of the light energy is further ensured.
In the above technical solution, the aspheric lens is made of quartz glass with a very small expansion coefficient, and the optical fiber positioning device is made of a metal material.
In the above technical solution, two aspheric focus points of the aspheric optical system are respectively provided with an optical fiber limit bayonet to respectively limit the insertion depth of the transmitting optical fiber and the receiving optical fiber, thereby ensuring that the end surface of each optical fiber is positioned at the aspheric focus point.
In the above technical solution, the optical fiber positioning device is provided with an optical fiber external port compatible with a standard optical fiber connector.
In the above technical solution, the aspheric optical system and the optical fiber positioning device may also be disposed inside a system housing.
In the above technical solution, the system housing is made of a metal material.
In the above technical solution, the system housing is provided with an optical fiber socket.
The invention has the beneficial effects that:
the non-contact high-efficiency light energy transmission method controls optical aberration by introducing two aspheric lenses, wherein one aspheric lens transmits light of a transmitting optical fiber to the other aspheric lens in a form of parallel light and then converges the light to the end face of a receiving optical fiber. The two aspheric lenses and the optical fiber and the aspheric mirror are not in contact with each other and are matched with each other by parallel light without precise adjustment. The method adopts an aspheric optical system to control aberration, so as to improve the quality of focused light spots and achieve the purpose of improving coupling efficiency; the optical-mechanical integrated athermalization design is introduced, so that the focal length and the working distance are unchanged during high-temperature work, and the coupling efficiency is ensured not to be reduced; meanwhile, the non-contact design with two independent bodies is adopted, the lens bodies are matched with parallel light, the matching precision is not required, and the assembly distance error between the two bodies has no influence on the coupling efficiency, so that the assembly difficulty is reduced, and the light energy transmission efficiency can be improved. The method has important significance for optoelectronic systems such as laser conduction and information transmission.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is an optical layout of a non-contact high efficiency optical energy transmission method;
FIG. 2 is an overall structural diagram of an aspheric optical system and an optical fiber positioning device of the non-contact high-efficiency optical energy transmission method;
fig. 3 is a system housing structure diagram of a contactless high-efficiency optical energy transmission method;
fig. 4 is a cross-sectional view of a fiber positioning device for a non-contact high efficiency optical energy transmission method.
The reference numerals in the figures denote:
the optical fiber positioning system comprises a 1-aspheric optical system, a 2-optical fiber positioning device, a 3-system shell, a 4-optical fiber socket, a 5-optical fiber limiting bayonet, a 6-optical fiber plugging channel, a 7-optical fiber external port, an 8-transmitting optical fiber and a 9-receiving optical fiber.
Detailed Description
The invention idea of the invention is as follows: in order to solve the technical problems of difficult aberration control, unclear imaging and low coupling efficiency of the traditional optical fiber coupling method, the invention provides a non-contact high-efficiency light energy transmission method, which firstly introduces an aspheric surface design and utilizes an aspheric lens to effectively control the aberration so as to improve the quality of a focusing light spot and achieve the purpose of improving the coupling efficiency; secondly, a light machine integrated athermalization design is introduced, and the thermal performance of the optical material and the thermal performance of the mechanical structure are considered uniformly, so that the focal length and the working distance are unchanged during high-temperature work, and the coupling efficiency is ensured not to be reduced; meanwhile, the non-contact design with two independent bodies is adopted, the lens bodies are matched with parallel light, the matching precision is not required, and the assembly distance error between the two bodies has no influence on the coupling efficiency, so that the assembly difficulty is reduced, and the light energy transmission efficiency can be improved.
The non-contact high-efficiency optical energy transmission method provided by the invention is specifically described in conjunction with fig. 1-4, and comprises the following steps:
the light emitted by the emitting optical fiber 8 is transmitted to the other aspheric lens of the aspheric optical system 1 in a form of parallel light through one aspheric lens of the aspheric optical system 1, and then is converged to the end face of the receiving optical fiber 9 to complete the transmission of light energy;
the transmitting optical fiber 8 and the receiving optical fiber 9 are respectively positioned at two focuses of the aspheric optical system 1 through the optical fiber plugging channel 6 of the optical fiber positioning device 2;
the aspheric optical system 1 and the optical fiber positioning device 2 adopt an optical-mechanical integrated athermalization design, so that the focal length and the working distance are unchanged during high-temperature work, the coupling efficiency is not reduced, the stable transmission of optical fiber energy is ensured, and the efficient transmission of light energy is further ensured.
In the non-contact high-efficiency light energy transmission method, the aspheric optical system 1 adopts two aspheric lenses, wherein one aspheric lens transmits the light of the transmitting optical fiber 8 to the other aspheric lens in a parallel light mode and then converges the light to the end face of the receiving optical fiber 9. The two aspheric lenses and the optical fiber and the aspheric mirror are not in contact with each other and are matched with each other by parallel light without precise adjustment.
In the non-contact high-efficiency light energy transmission method, the optical fiber positioning device 2 is designed by adopting a plug-in structure, is integrally of a metal structure, is internally designed with an optical fiber plug-in channel 6, and is respectively designed with the optical fiber limiting bayonets 5 of the transmitting optical fiber 8 and the receiving optical fiber 9 at the aspheric focus of the aspheric optical system 1, so that the insertion depth of the optical fibers is limited, and the end faces of the transmitting optical fiber 8 and the receiving optical fiber 9 are ensured to be positioned at the aspheric focus. Meanwhile, the optical fiber positioning device 2 is provided with an optical fiber external port 7, and the optical fiber external port 7 is compatible with a standard optical fiber connector without special treatment on the optical fiber port.
In the non-contact high-efficiency light energy transmission method, the optical fiber positioning device 2 and the aspheric optical system 1 adopt an optical machine integrated athermalization design, thermal properties of optical materials and mechanical structures are considered uniformly, quartz glass with a very small expansion coefficient is used as an aspheric lens material, and the system shell 3 adopts an all-metal structure, so that a good heat dissipation effect is ensured, the focal length and the working distance of the coupler are unchanged when the coupler works at high temperature, the coupling efficiency is ensured not to be reduced, the stable transmission of optical fiber energy is ensured, and the high-efficiency transmission of light energy is further ensured.
In the non-contact high-efficiency light energy transmission method, the optical fiber positioning device 2 and the aspheric optical system 1 can be arranged in an external structure system shell 3 in a closed space, and the system shell 3 is generally made of metal materials. In order to ensure the good heat dissipation effect of the system, the system shell 3 is in close contact with the optical fiber positioning device 2 in a physical attaching mode, so that the heat is rapidly conducted, and meanwhile, an external screw hole is reserved outside the system shell 3, so that the system shell is conveniently connected with other external equipment. Except the optical fiber socket 4, the other parts of the system shell 3 are completely closed, so that the external light is prevented from entering the system to influence the coupling efficiency and further influence the light energy transmission efficiency.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. A non-contact high-efficiency optical energy transmission method is characterized by comprising the following steps:
the light emitted by the emitting optical fiber (8) is transmitted to the other aspheric lens of the aspheric optical system (1) in a parallel light mode through one aspheric lens of the aspheric optical system (1) and then converged to the end face of the receiving optical fiber (9) to complete the transmission of light energy;
the transmitting optical fiber (8) and the receiving optical fiber (9) are respectively positioned at two focuses of the aspheric optical system (1) through an optical fiber plugging channel (6) of the optical fiber positioning device (2);
the aspheric optical system (1) and the optical fiber positioning device (2) adopt an optical-mechanical integrated athermalization design, so that the focal length and the working distance are unchanged during optical energy transmission under a high-temperature condition, the coupling efficiency is not reduced, the stable transmission of optical fiber energy is ensured, and the efficient transmission of the optical energy is further ensured.
2. The method of claim 1, wherein the aspheric lens is quartz glass and the fiber positioning device (2) is a metal material.
3. The non-contact high-efficiency optical energy transmission method according to claim 1, wherein two aspheric focal points of the aspheric optical system (1) are respectively provided with an optical fiber limit bayonet (5) for respectively limiting the insertion depth of the transmitting optical fiber (8) and the receiving optical fiber (9) and ensuring that the end surface of each optical fiber is positioned at the aspheric focal point.
4. A method of contactless high efficiency optical energy transfer according to claim 1, characterized in that the fiber positioning device (2) is provided with a fiber external port (7) compatible with standard fiber splices.
5. The method of claim 1, wherein the aspheric optical system (1) and the fiber positioning device (2) are further disposed inside a system housing (3).
6. The method of contactless high efficiency optical energy transmission according to claim 5, characterized in that the system housing (3) is a metallic material.
7. The method of claim 5, wherein the system housing (3) is provided with an optical fiber jack (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011549537.5A CN112630893A (en) | 2020-12-24 | 2020-12-24 | Non-contact high-efficiency light energy transmission method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011549537.5A CN112630893A (en) | 2020-12-24 | 2020-12-24 | Non-contact high-efficiency light energy transmission method |
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| CN112630893A true CN112630893A (en) | 2021-04-09 |
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| CN202011549537.5A Pending CN112630893A (en) | 2020-12-24 | 2020-12-24 | Non-contact high-efficiency light energy transmission method |
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Citations (10)
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| US6438290B1 (en) * | 2000-06-22 | 2002-08-20 | Eastman Kodak Company | Micro-aspheric collimator lens |
| CN2569169Y (en) * | 2002-09-06 | 2003-08-27 | 一品光学工业股份有限公司 | Optical fibre collimator |
| TW561285B (en) * | 2002-08-02 | 2003-11-11 | E Pin Optical Industry Co Ltd | Manufacturing method of fiber collimator |
| CN1480752A (en) * | 2002-09-06 | 2004-03-10 | 一品光学工业股份有限公司 | Method for manufacturing optical fiber collimator |
| CN1497281A (en) * | 2002-10-01 | 2004-05-19 | 伊斯曼柯达公司 | Symmetric double-nonspherical lens for optical fibre collimator assembly |
| CN201732185U (en) * | 2010-06-29 | 2011-02-02 | 深圳市雷迈科技有限公司 | Optical fiber coupler |
| CN105223656A (en) * | 2015-10-15 | 2016-01-06 | 国网智能电网研究院 | A kind of fiber splicer |
| CN205091489U (en) * | 2015-08-24 | 2016-03-16 | 北京凌云光技术有限责任公司 | Optic fibre coupled laser coupling optical system |
| CN107667249A (en) * | 2015-05-04 | 2018-02-06 | 康宁股份有限公司 | Optical fibre illumination device and method |
| CN110471144A (en) * | 2019-08-07 | 2019-11-19 | 北京工业大学 | A kind of myriawatt grade optical fiber connector of anaberration |
-
2020
- 2020-12-24 CN CN202011549537.5A patent/CN112630893A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6438290B1 (en) * | 2000-06-22 | 2002-08-20 | Eastman Kodak Company | Micro-aspheric collimator lens |
| TW561285B (en) * | 2002-08-02 | 2003-11-11 | E Pin Optical Industry Co Ltd | Manufacturing method of fiber collimator |
| CN2569169Y (en) * | 2002-09-06 | 2003-08-27 | 一品光学工业股份有限公司 | Optical fibre collimator |
| CN1480752A (en) * | 2002-09-06 | 2004-03-10 | 一品光学工业股份有限公司 | Method for manufacturing optical fiber collimator |
| CN1497281A (en) * | 2002-10-01 | 2004-05-19 | 伊斯曼柯达公司 | Symmetric double-nonspherical lens for optical fibre collimator assembly |
| CN201732185U (en) * | 2010-06-29 | 2011-02-02 | 深圳市雷迈科技有限公司 | Optical fiber coupler |
| CN107667249A (en) * | 2015-05-04 | 2018-02-06 | 康宁股份有限公司 | Optical fibre illumination device and method |
| CN205091489U (en) * | 2015-08-24 | 2016-03-16 | 北京凌云光技术有限责任公司 | Optic fibre coupled laser coupling optical system |
| CN105223656A (en) * | 2015-10-15 | 2016-01-06 | 国网智能电网研究院 | A kind of fiber splicer |
| CN110471144A (en) * | 2019-08-07 | 2019-11-19 | 北京工业大学 | A kind of myriawatt grade optical fiber connector of anaberration |
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Application publication date: 20210409 |