CN105204122A - Optical fiber collimator assembling method and optical fiber collimator - Google Patents
Optical fiber collimator assembling method and optical fiber collimator Download PDFInfo
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- CN105204122A CN105204122A CN201410356622.8A CN201410356622A CN105204122A CN 105204122 A CN105204122 A CN 105204122A CN 201410356622 A CN201410356622 A CN 201410356622A CN 105204122 A CN105204122 A CN 105204122A
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Abstract
The invention provides an optical fiber collimator assembling method and an optical fiber collimator. Firstly, a prepared second side end surface and a first side end surface are planes and are parallel to each other, and a thickness is equal to a fixed focus standard component of a lens intercept. And then, a lens, the fixed focus standard component and an optical fiber head are connected and fixed according to modes of tight contacting of a second side end surface of the fixed focus standard component and an inner side end surface of the optical fiber head and tight contacting of a first side end surface of the fixed focus standard component and an inner side end surface of the lens.
Description
Technical field
The present invention relates to fiber optic communication field, the making of specific design fiber plant and design; More particularly, the present invention relates to a kind of optical fiber collimator assemble method and optical fiber collimator.
Background technology
Existing optical fiber collimator, remains with clearance between lens and optical fiber head, and for making fiber end face drop in lens focus, during assembling, the thickness in each gap needs adjustment, compares and takes a lot of work.
Particularly, Fig. 1 to Fig. 3 schematically shows the optical fiber collimator assemble method according to prior art.As shown in Figure 1 to Figure 3, according in the optical fiber collimator assemble method of prior art, first prepare lens 1 and be attached sleeve pipe 5 (as shown in Figure 1) in lens 1 external stability; Subsequently, the optical fiber head 3 sidewall being coated with ultraviolet glue 4 loads the openend (as shown in Figure 2) of sleeve pipe 5; Now, due to the reason of the manufacturing tolerance of lens 1, the Center Length of lens 1 (sphere centre of such as spherical lens to the length of relative planar central, or the length between the center of two of gradient lens opposite planar) is distinct for each lens produced; Now, as indicated by the arrows in fig. 3, need to input alignment light to optical fiber head 3, and checked from the only no collimation of lens 1 outgoing by instrument or human eye while regulating the distance D0 between lens 1 and optical fiber head 3 (namely to be moved back in sleeve pipe 5 by optical fiber head 3 relative to lens 1 or draw) outward and determine the location of optical fiber head 3 in sleeve pipe 5.Specifically, when from the optical alignment of lens 1 outgoing, can determine that the optical fiber head 3 under this state is in appropriate location; Now, by ultraviolet glue 4 irradiating ultraviolet light, optical fiber head 3 is pasted by ultraviolet glue 4 and is fixed to sleeve pipe 5.
In the prior art, be the adjustment location of optical fiber head 3 in sleeve pipe 5, generally need employing five to tie up regulating device, must disposable adjustment XYZ tri-axle and up and down, inclination angle five, two, left and right ties up and puts in place.
Can find out, optical fiber collimator assemble method according to prior art not only needs the utility appliance such as external source light source, and the mode needing by manual calibration, under the checkout facility of such as microscope and so on, by the size of the clearance between operating personnel's manual adjustments lens and optical fiber head, so that optical fiber head can be aimed at mutually with lens, thus the light that external source light source is sent becomes parallel light emergence after lens.
But, not high according to the packaging efficiency of the optical fiber collimator assemble method of prior art, and need extra utility appliance, and due to the artificial adjustment of needs, thus produce alignment error.
Summary of the invention
Technical matters to be solved by this invention is for there is above-mentioned defect in prior art, provides a kind of packaging efficiency high and the optical fiber collimator assemble method that Adjustment precision is high and corresponding optical fiber collimator structure.
In order to realize above-mentioned technical purpose, according to a first aspect of the invention, provide a kind of optical fiber collimator assemble method, it comprises: first, prepares the Center Length of the lens of lens also prepared by measurement, and at its outer fixing attachment sleeve pipe; After this, calculate the distance made between lens needed for lens outgoing collimated light beam and optical fiber head according to the Center Length of the lens measured and the index meter of lens, and select thickness to equal calculated distance focus standard component; Subsequently, will the openend of standard component and optical fiber head loading sleeve pipe be focused successively, and optical fiber head sidewall is fixed to the inwall of sleeve pipe.
According to a second aspect of the invention, provide a kind of optical fiber collimator assemble method, it is characterized in that comprising: first, prepare the Center Length of the lens of lens also prepared by measurement, and prepare optical fiber head and be attached sleeve pipe in optical fiber head external stability; After this, calculate the distance made between lens needed for lens outgoing collimated light beam and optical fiber head according to the Center Length of the lens measured and the index meter of lens, and select thickness to equal calculated distance focus standard component; Subsequently, will the openend of standard component and lens loading sleeve pipe be focused successively, and lens sidewall is fixed to the inwall of sleeve pipe.
Preferably, wherein utilize the first glue that the first side focusing standard component is fixed to the connecting end surface of lens, and utilize the second glue that the second side focusing standard component is fixed to optical fiber head.
According to a third aspect of the invention we, provide a kind of optical fiber collimator assemble method, it comprises: first, prepares the Center Length of the lens of lens also prepared by measurement; After this, calculate the distance made between lens needed for lens outgoing collimated light beam and optical fiber head according to the Center Length of the lens measured and the index meter of lens, and select thickness to equal calculated distance focus standard component; Subsequently, utilize the first glue that the first side focusing standard component is fixed to the connecting end surface of lens, and utilize the second glue that the second side focusing standard component is fixed to optical fiber head.
According to a forth aspect of the invention, provide a kind of optical fiber collimator, it comprises: lens, focus standard component, optical fiber head and sleeve pipe; Wherein, lens and sleeve pipe are all fixedly connected with the inwall of sleeve pipe; The first side focusing standard component is fixed to the connecting end surface of lens by the first glue, and the second side focusing standard component is fixed to optical fiber head by the second glue.
According to a fifth aspect of the invention, provide a kind of optical fiber collimator, it comprises: lens, focus standard component and optical fiber head; Wherein, the first side focusing standard component is fixed to the connecting end surface of lens by the first glue, and the second side focusing standard component is fixed to optical fiber head by the second glue.
Preferably, the refractive index of standard component is focused between the refractive index and the refractive index of optical fiber head of lens; The refractive index of the first glue is between focusing between the refractive index of standard component and the refractive index of lens; And second the refractive index of glue between focusing between the refractive index of standard component and the refractive index of optical fiber head.
Preferably, the material focusing standard component is transparent glass; The temperature expansion coefficient focusing the material of standard component is consistent with glass.
Preferably, Center Length be spherical lens sphere centre to the relative length of planar central or two opposite planar of gradient lens center between length.
The present invention utilize there is the thickness calculated focus standard component, change into the directly fixing method of grouping after survey calculation by needing the method adjusted one by one each optical fiber collimator in prior art; Thus, the high and optical fiber collimator assemble method that Adjustment precision is high of a kind of packaging efficiency and corresponding optical fiber collimator structure is provided.
Accompanying drawing explanation
By reference to the accompanying drawings, and by reference to detailed description below, will more easily there is more complete understanding to the present invention and more easily understand its adjoint advantage and feature, wherein:
Fig. 1 to Fig. 3 schematically shows the optical fiber collimator assemble method according to prior art.
Fig. 4 to Fig. 6 schematically shows each step of the optical fiber collimator assemble method according to first preferred embodiment of the invention.
Fig. 7 to Fig. 9 schematically shows each step of the optical fiber collimator assemble method according to second preferred embodiment of the invention.
Figure 10 schematically shows the optical fiber collimator of retrofiting according to the preferred embodiment of the invention.
It should be noted that, accompanying drawing is for illustration of the present invention, and unrestricted the present invention.Note, represent that the accompanying drawing of structure may not be draw in proportion.Further, in accompanying drawing, identical or similar element indicates identical or similar label.
Embodiment
In order to make content of the present invention clearly with understandable, below in conjunction with specific embodiments and the drawings, content of the present invention is described in detail.
< first preferred embodiment >
Fig. 4 to Fig. 6 schematically shows each step of the optical fiber collimator assemble method according to first preferred embodiment of the invention.
First, prepare the second side end face be plane with the first side end face and parallel and thickness equal lens intercept focus standard component.
Subsequently, by lens, focus standard component and optical fiber head is close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, by lens, focuses standard component and to be connected with optical fiber head and to fix.
As shown in Figures 4 to 6, comprise according to the optical fiber collimator assemble method of first preferred embodiment of the invention:
First, prepare lens 1 and measure its intercept.
A kind ofly measure in the method for intercept of the present invention provided, need the Center Length D1 of the lens 1 prepared by measuring (such as, the sphere centre of the spherical lens shown in Fig. 4 is to the length of relative planar central, or the length between the center of two of the gradient lens shown in Figure 10 opposite planar), and in lens 1 external stability attachment sleeve pipe 5 (as shown in Figure 4);
After this, calculate the intercept D2 made between lens 1 needed for lens 1 outgoing collimated light beam and optical fiber head 3 according to the Center Length of the lens 1 measured and the index meter of lens 1, and select thickness to equal calculated intercept D2 focus standard component 2 (as shown in Figure 5);
In a particular embodiment, intercept D2 can be calculated according to following instruction:
In peace adhesion teacher " applied optics " in book, the 42nd page-43 pages, the 74th page-75 pages illustrate the focal length computing method that spherical lens and an end face are the lens of plane.
According to the general knowledge in this area, after obtaining focal length, deduct the distance of optical center of lens to side end face, just can obtain the intercept of lens in this side.
When the refractive index that known n1 is lens 1, n2 is the refractive index focusing standard component 2, and D1 is the Center Length of lens 1, and R is the radius of lens 1 front end sphere.According to above instruction, the intercept D2 determining lens 1 can be calculated.
In the method for other of the present invention provided measurement intercepts, also can adopt the intercept D2 of the measurement lens of the optical meanss such as known parallel light focusing method, directional light collimation method, two times of intercept methods.
Subsequently, be close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, to standard component 2 and optical fiber head 3 be focused load the openend of sleeve pipe 5 successively, and utilize the 3rd ultraviolet glue 43 optical fiber head 3 sidewall to be fixed to the inwall (as shown in Figure 6) of sleeve pipe 5; Wherein preferably can utilize the first glue further (such as, first ultraviolet glue 41) the first side focusing standard component 2 is fixed to the inner face of lens 1 opposed optical fibers head 3, and preferably can utilize the second ultraviolet glue 42 that the second side focusing standard component 2 is fixed to optical fiber head 3 further; Such as, the fixing of various piece can be carried out by first applying the mode of carrying out UV-irradiation afterwards.
Preferably, the material focusing standard component 2 can be transparent glass, can certainly other light transmissive materials; Preferably, the temperature expansion coefficient focusing the material of standard component 2 is consistent with glass or close.
In an alternate embodiment, focus standard component 2 only light path by part be transparent glass.In an alternative embodiment, focusing standard component 2 light path by part is hollow cavity.In an alternative embodiment again, the hollow cavity focusing standard component 2 also can fill printing opacity glue.
Now, when calculating intercept D2, the refractive index of light transmissive material should be suitable for respectively, obtain the intercept in light transmissive material; Or be suitable for the refractive index of air, obtain the intercept in air; Or be suitable for the refractive index of printing opacity glue, obtain the intercept in printing opacity glue.
The both sides focusing standard component 2 can not gluing, focuses standard component 2 and is directly fixed by being clipped between lens 1 and optical fiber head 3.
In an alternative embodiment, lens 1 with focus surface that standard component 2 contacts and optical fiber head 3 and focus the surface that standard component 2 contacts and preferably can have film plating layer, to reduce the effect reflected, thus increase light utilization efficiency.Optionally, at least one plated film on the surface in the inner side end focusing the first side end face of standard component, the second side end face, the inner side end of optical fiber head, lens.
Therefore, according in the optical fiber collimator assemble method of first preferred embodiment of the invention, as long as measure the Center Length of lens, by calculating required gap length, choose there is the thickness corresponding with required gap length focus standard component, be directly placed between lens and optical fiber head and focus standard component, and need not again by regulating clearance manually, and directly just can make aiming at of optical fiber head and lens, thus make can send directional light from lens.In other words, the present invention utilize there is the thickness calculated focus standard component, change into the directly fixing method of grouping after survey calculation by needing the method adjusted one by one each optical fiber collimator in prior art; Thus, the high and optical fiber collimator assemble method that Adjustment precision is high of a kind of packaging efficiency and corresponding optical fiber collimator structure is provided.
Like this, for the optical fiber collimator assemble method according to first preferred embodiment of the invention, do not need operating personnel manually to regulate light, can human cost be saved thus, also peripheral hardware light source and other external ancillary equipments can be set simultaneously again, greatly can save financial cost thus.In fact, utilize and assembling speed can be made greatly to increase according to method of the present invention.
In addition, further preferably, the refractive index of standard component is focused between the refractive index and the refractive index of optical fiber head of lens.Further preferably, the refractive index of the first printing opacity glue 41 is between focusing between the refractive index of standard component 2 and the refractive index of lens 1, and the refractive index of the second printing opacity glue 42 is between focusing between the refractive index of standard component 2 and the refractive index of optical fiber head 3.
Particularly, the refractive index of the first printing opacity glue 41 is greater than the refractive index that focuses standard component 2 and is less than the refractive index of lens 1; The refractive index that the refractive index of the second printing opacity glue 42 is greater than optical fiber head 3 (inner fiber wherein) is less than the refractive index focusing standard component 2.
In this case, also realized the effect of the reduction reflection of plated film by index matching, thus can without the need to lens 1 with focus surface that standard component 2 contacts and optical fiber head 3 with focusing on surface that standard component 2 contacts and form film plating layer.Therefore, for plated film will be taked between lens and optical fiber head to guarantee transmittance and light utilization efficiency, the cost of this way is high; And in preferred exemplary of the present invention, focusing standard component and only needing between lens and optical fiber head to utilize the glue with specific refractive index to carry out sticky transmittance and the light utilization efficiency of can ensureing, like this owing to eliminating coating process and more cost-saving.
The modified example > of < first preferred embodiment
Describe with reference to figure 4 to Fig. 6 according in the optical fiber collimator assemble method of first preferred embodiment of the invention, describe lens first and sleeve pipe bonding and in sleeve pipe, put into the situation focusing standard component and optical fiber head subsequently; But the present invention be obviously for optical fiber head first and sleeve pipe bonding and in sleeve pipe, put into the situation focusing standard component and lens subsequently.Thus, obviously following process can be revised as according to the optical fiber collimator assemble method of first preferred embodiment of the invention:
First, prepare the Center Length of the lens of lens also prepared by measurement, and prepare optical fiber head and be attached sleeve pipe in optical fiber head external stability;
After this, calculate the distance made between lens needed for lens outgoing collimated light beam and optical fiber head according to the Center Length of the lens measured and the index meter of lens, and select thickness to equal calculated distance focus standard component;
Subsequently, will the openend of standard component and lens loading sleeve pipe be focused successively, and lens sidewall is fixed to the inwall of sleeve pipe.
And the further improvement according to the optical fiber collimator assemble method of first preferred embodiment of the invention is also applicable to this modified example.
In fact, lens or optical fiber head or focus standard component and can fix with sleeve pipe in advance separately, or being fixed with outer tube again lens or optical fiber head or focus after standard component fits together, or do not use sleeve pipe (not using the embodiment of sleeve pipe will be described below).
Therefore, the invention provides a kind of assemble method of optical fiber collimator: first, prepare the second side end face be plane with the first side end face and parallel and thickness equal lens intercept focus standard component; Subsequently, by lens, focus standard component and optical fiber head is close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, by lens, focuses standard component and to be connected with optical fiber head and to fix.
In the present invention, can with the intercept of optical method for measuring lens to be assembled, also can scioptics length and in conjunction with lens refractive index and focus standard component light path to calculate lens intercept by the index meter of part.
In the present invention, lens, focus outside standard component, optical fiber head and can have a sleeve pipe, also can not have sleeve pipe only three be connected and fixed.In the embodiment having sleeve pipe, lens, focus standard component, optical fiber head can be assembled with any possible order and sleeve pipe.
< optical fiber collimator >
The present invention relates to the optical fiber collimator relevant to above-mentioned first preferred embodiment, as shown in Figure 6.Optical fiber collimator according to the embodiment of the present invention comprises: lens 1, focus standard component 2, optical fiber head 3 and sleeve pipe 5; Wherein, lens 1 are all fixedly connected with the inwall of sleeve pipe 5 with sleeve pipe 5; And the inner side end of lens is plane and has angle with main shaft, equal with optical fiber head first side end face angle; The second side end face focusing standard component is plane with the first side end face and parallel, and the thickness between both ends of the surface equals the intercept of lens, the inner side end of the second side end face and this optical fiber head that focus standard component is close to, and the inner side end of this first side end face and these lens of focusing standard component is close to.
Now, the inner side end of the second side end face and optical fiber head that focus standard component is positioned on the focal plane of lens.
Preferably, the first side focusing standard component 2 is fixed to the inner face of lens 1 opposed optical fibers head 3 by the first printing opacity glue 41, and the second side focusing standard component 2 is fixed to optical fiber head 3 by the second printing opacity glue 42.
Equally, preferably, the material focusing standard component 2 can be transparent glass, can certainly other light transmissive materials; Preferably, the temperature expansion coefficient focusing the material of standard component 2 is consistent with glass or close.Further preferably, the refractive index of standard component is focused between the refractive index and the refractive index of optical fiber head of lens.Further preferably, the refractive index of the first printing opacity glue 41 is between focusing between the refractive index of standard component 2 and the refractive index of lens 1, and the refractive index of the second printing opacity glue 42 is between focusing between the refractive index of standard component 2 and the refractive index of optical fiber head 3.Particularly, the refractive index of the first printing opacity glue 41 is greater than the refractive index that focuses standard component 2 and is less than the refractive index of lens 1; The refractive index that the refractive index of the second printing opacity glue 42 is greater than optical fiber head 3 (inner fiber wherein) is less than the refractive index focusing standard component 2.
Equally, in an alternate embodiment, focus standard component 2 only light path by part be transparent glass.In an alternative embodiment, focusing standard component 2 light path by part is hollow cavity.In an alternative embodiment again, the hollow cavity focusing standard component 2 also can fill printing opacity glue.
Now, when calculating intercept D2, the refractive index of light transmissive material should be suitable for respectively, obtain the intercept in light transmissive material; Or be suitable for the refractive index of air, obtain the intercept in air; Or be suitable for the refractive index of printing opacity glue, obtain the intercept in printing opacity glue.
Shown optical fiber collimator can realize the technique effect achieved by the optical fiber collimator assemble method of first preferred embodiment of the invention equally.
< second preferred embodiment >
Fig. 7 to Fig. 9 schematically shows each step of the optical fiber collimator assemble method according to second preferred embodiment of the invention.
As shown in Figure 7 to 9, comprise according to the optical fiber collimator assemble method of second preferred embodiment of the invention:
First, prepare the Center Length of the lens 1 of lens 1 also prepared by measurement (such as, the sphere centre of the spherical lens shown in Fig. 4 is to the length of relative planar central, or the length between the center of two of the gradient lens shown in Fig. 7 opposite planar) (as shown in Figure 7);
After this, calculate the intercept D2 made between lens 1 needed for lens 1 outgoing collimated light beam and optical fiber head 3 according to the Center Length of the lens 1 measured and the index meter of lens 1, and select thickness to equal calculated intercept D2 focus standard component 2 (as shown in Figure 8);
In peace adhesion teacher " applied optics " in book, the 42nd page-43 pages, the 74th page-75 pages illustrate the intercept computing method that spherical lens and an end face are the lens of plane.
When the refractive index that known n1 is lens 1, n2 is the refractive index focusing standard component 2, and D1 is the Center Length of lens 1, and R is the radius of lens 1 front end sphere.According to above instruction, the intercept D2 determining lens 1 can be calculated.
In the method for other of the present invention provided measurement intercepts, also can adopt the intercept D2 of the measurement lens of the optical meanss such as known parallel light focusing method, directional light collimation method, two times of intercept methods.
Subsequently, utilize the first glue (such as, first printing opacity glue 41) the first side focusing standard component 2 is fixed to the inner face of lens 1 opposed optical fibers head 3, and utilize the second printing opacity glue 42 that the second side focusing standard component 2 is fixed to optical fiber head 3 (as shown in Figure 9); Such as, the fixing of various piece can be carried out by first applying the mode of carrying out UV-irradiation afterwards.
Preferably, the material focusing standard component 2 can be transparent glass, can certainly other light transmissive materials; Preferably, the temperature expansion coefficient focusing the material of standard component 2 is consistent with glass or close.
In addition, further preferably, the refractive index of standard component is focused between the refractive index and the refractive index of optical fiber head of lens.Further preferably, the refractive index of the first printing opacity glue 41 is between focusing between the refractive index of standard component 2 and the refractive index of lens 1, and the refractive index of the second printing opacity glue 42 is between focusing between the refractive index of standard component 2 and the refractive index of optical fiber head 3.
Particularly, the refractive index of the first printing opacity glue 41 is greater than the refractive index that focuses standard component 2 and is less than the refractive index of lens 1; The refractive index that the refractive index of the second printing opacity glue 42 is greater than optical fiber head 3 (inner fiber wherein) is less than the refractive index focusing standard component 2.
Except can realizing the technique effect achieved by the optical fiber collimator assemble method of first preferred embodiment of the invention equally, according in the optical fiber collimator assemble method of second preferred embodiment of the invention, sleeve pipe can not also be needed namely to complete assembling, thus reduce the cost of optical fiber collimator on the one hand, reduce the volume of optical fiber collimator on the other hand, be conducive to the integrated of optical fiber collimator widely.
< optical fiber collimator >
The present invention relates to a kind of optical fiber collimator, have: optical fiber head, the inner side end of this optical fiber head is plane and has angle with main shaft; Lens, the inner side end of these lens is plane and has angle with main shaft, and this angle is equal with aforesaid optical fiber head first side end face angle; And standard component is focused between optical fiber head and lens, the inner side end of this second side end face and this optical fiber head of focusing standard component is close to, and the inner side end of this first side end face and these lens of focusing standard component is close to; This second side end face focusing standard component is plane with the first side end face and parallel, and the thickness between both ends of the surface equals the intercept of lens.
The present invention relates to the optical fiber collimator relevant to above-mentioned second preferred embodiment, as shown in Figure 9.Optical fiber collimator according to the embodiment of the present invention comprises: lens 1, focus standard component 2 and optical fiber head 3; Wherein, the first side focusing standard component 2 is fixed to the inner face of lens 1 opposed optical fibers head 3 by the first printing opacity glue 41, and the second side focusing standard component 2 is fixed to optical fiber head 3 by the second printing opacity glue 42.Particularly, the refractive index of the first printing opacity glue 41 is greater than the refractive index that focuses standard component 2 and is less than the refractive index of lens 1; The refractive index that the refractive index of the second printing opacity glue 42 is greater than optical fiber head 3 (inner fiber wherein) is less than the refractive index focusing standard component 2.And the inner side end of lens is plane and has angle with main shaft, equal with optical fiber head first side end face angle; The second side end face focusing standard component is plane with the first side end face and parallel, and the thickness between both ends of the surface equals the intercept of lens, the inner side end of the second side end face and this optical fiber head that focus standard component is close to, and the inner side end of this first side end face and these lens of focusing standard component is close to.The angle of side end face and main shaft can be vertical or become 86 degree, 84 degree, 82 degree or 78 degree.
Equally, preferably, the material focusing standard component 2 can be transparent glass, can certainly other light transmissive materials; Preferably, the temperature expansion coefficient focusing the material of standard component 2 is consistent with glass or close.Further preferably, the refractive index of standard component is focused between the refractive index and the refractive index of optical fiber head of lens.Further preferably, the refractive index of the first printing opacity glue 41 is between focusing between the refractive index of standard component 2 and the refractive index of lens 1, and the refractive index of the second printing opacity glue 42 is between focusing between the refractive index of standard component 2 and the refractive index of optical fiber head 3.
Shown optical fiber collimator can realize the technique effect achieved by the optical fiber collimator assemble method of second preferred embodiment of the invention equally.
< embodiment remodeling >
Fig. 4 to Fig. 9 shows the example of spherical lens, but as shown in Figure 10, the present invention is equally applicable to gradient-index lens.
And, Fig. 4 to Fig. 9 show lens with focus the situation that face that standard component is connected is dip plane, but as shown in Figure 10, the present invention be equally applicable to lens with focus the situation that face that standard component is connected is vertical plane.
Now, the length of lens refers to refer to: length in the heart in two opposite faces of gradient lens.
In addition, the situation that the external diameter that Fig. 4 to Fig. 6 shows lens 1 mates with the external diameter of optical fiber head 3, but in fact, do not having in sleeved situation, the external diameter of lens 1 can mate with the external diameter of optical fiber head 3 and also can not mate.
In the present invention, can with the intercept of optical method for measuring lens to be assembled, also can scioptics length and in conjunction with lens refractive index and focus standard component light path to calculate lens intercept by the index meter of part.
In the present invention, lens, focus outside standard component, optical fiber head and can have a sleeve pipe, also can not have sleeve pipe only three be connected and fixed.In the embodiment having sleeve pipe, lens, focus standard component, optical fiber head can be assembled with any possible order and sleeve pipe.
In the present invention, the profile focusing standard component can be right cylinder, oblique circular cylinder body, four prisms cylinder or tri-prismoid.Lens can be spherical lens, gradient lens or non-spherical lens.
And optical fiber head 3 can be the optical fiber head of single fiber, it also can be the optical fiber head of many optical fiber.
It should be noted that, although describe principle of the present invention with the situation of printing opacity glue above, printing opacity glue is only preferred exemplary, and the present invention obviously can adopt the glue of other type to realize.
In addition, it should be noted that, unless stated otherwise or point out, otherwise the term " first " in instructions, " second ", " the 3rd " etc. describe only for distinguishing each assembly, element, step etc. in instructions, instead of for representing logical relation between each assembly, element, step or ordinal relation etc.Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (22)
1. an assemble method for optical fiber collimator, is characterized in that, comprises the following steps:
First, prepare the second side end face be plane with the first side end face and parallel and thickness equal lens intercept focus standard component;
Subsequently, by lens, focus standard component and optical fiber head is close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, by lens, focuses standard component and to be connected with optical fiber head and to fix.
2. optical fiber collimator assemble method according to claim 1, is characterized in that, further comprising the steps of:
Before preparation focuses standard component, with the intercept of optical method for measuring lens to be assembled.
3. optical fiber collimator assemble method according to claim 1, is characterized in that, further comprising the steps of:
Before preparation focuses standard component, measure the length of lens to be assembled, according to the length of lens measured and in conjunction with lens refractive index and focus standard component light path to calculate lens intercept by index meter partly.
4. optical fiber collimator assemble method according to claim 3, is characterized in that, the length of lens refers to: length in the heart in the sphere centre of spherical lens to the relative length of planar central or two opposite faces of gradient lens.
5., according to the arbitrary described optical fiber collimator assemble method of Claims 1-4, it is characterized in that, described by lens, focus standard component and be connected and the step of fixing with optical fiber head, refer to:
Be close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, with glue by lens with focus standard component, focus standard component and optical fiber head inter-adhesive and solidify this glue.
6. optical fiber collimator assemble method according to claim 5, is characterized in that, further comprising the steps of:
Bonding and fixing lens, focus standard component and optical fiber head sidewall outside, internal diameter is equaled lens, to focus the sleeve of maximum outside diameter in standard component and optical fiber head bonding and fixing.
7., according to the arbitrary described optical fiber collimator assemble method of Claims 1-4, it is characterized in that, described by lens, focus standard component and be connected and the step of fixing with optical fiber head, comprising:
With glue, lens, the sidewall that focuses in standard component and optical fiber head one are first solidified this glue with internal surface of sleeve pipe adhesion;
Be close to according to the inner side end of the second side end face and optical fiber head that focus standard component, the mode that the inner side end of the first side end face and lens that focus standard component is close to, with glue by lens with focus standard component, focus standard component and to be connected with optical fiber head and to fix.
8. optical fiber collimator assemble method according to claim 7, it is characterized in that, describedly with glue, lens, the sidewall that focuses in standard component and optical fiber head one are first solidified this glue with internal surface of sleeve pipe adhesion, then with glue by lens with focus standard component, focus standard component and to be connected with optical fiber head and the step of fixing refers to:
First at lens sidewall external stability sleeve pipe;
Then will focus the openend that standard component and optical fiber head load sleeve pipe successively, and be fixed to the inwall of sleeve pipe to major general's optical fiber head sidewall, or will standard component be focused and optical fiber head is fixed to lens.
9. optical fiber collimator assemble method according to claim 7, it is characterized in that, describedly with glue, lens, the sidewall that focuses in standard component and optical fiber head one are first solidified this glue with internal surface of sleeve pipe adhesion, then with glue by lens with focus standard component, focus standard component and to be connected with optical fiber head and the step of fixing refers to:
First at optical fiber head sidewall external stability sleeve pipe;
Then will focus the openend that standard component and lens load sleeve pipe successively, and be fixed to the inwall of sleeve pipe to major general's lens sidewall, or will standard component be focused and lens are fixed to optical fiber head.
10. optical fiber collimator assemble method according to claim 7, it is characterized in that, describedly with glue, lens, the sidewall that focuses in standard component and optical fiber head one are first solidified this glue with internal surface of sleeve pipe adhesion, then with glue by lens with focus standard component, focus standard component and to be connected with optical fiber head and the step of fixing refers to:
First standard component sidewall external stability sleeve pipe is being focused; Then optical fiber head and lens are respectively charged into two openends of sleeve pipe, and optical fiber head and lens sidewall are fixed to the inwall of sleeve pipe, or optical fiber head and lens are fixed to focus standard component.
11., according to the arbitrary described optical fiber collimator assemble method of Claims 1-4, is characterized in that, further comprising the steps of:
At least one plated film on the surface in the inner side end focusing the first side end face of standard component, the second side end face, the inner side end of optical fiber head, lens.
12. 1 kinds of optical fiber collimators, is characterized in that having:
Optical fiber head, the inner side end of this optical fiber head is plane and has angle with main shaft;
Lens, the inner side end of these lens is plane and has angle with main shaft, and this angle is equal with aforesaid optical fiber head first side end face angle;
And standard component is focused between optical fiber head and lens, the inner side end of this second side end face and this optical fiber head of focusing standard component is close to, and the inner side end of this first side end face and these lens of focusing standard component is close to;
This second side end face focusing standard component is plane with the first side end face and parallel, and the thickness between both ends of the surface equals the intercept of lens.
13. optical fiber collimators according to claim 12, is characterized in that, the light path focusing standard component is hollow by part, and the intercept of described lens is the aerial intercept of light path.
14. optical fiber collimators according to claim 12, is characterized in that, described in focus standard component light path be that light transmissive material is made by part, the intercept of described lens is the intercept of light path in this light transmissive material.
15., according to claim 12 to 14 arbitrary described optical fiber collimators, is characterized in that,
The inner side end of the second side end face and optical fiber head that wherein focus standard component is close to and with gluing fixed, and the inner side end of the first side end face and lens that focus standard component is close to and with gluing fixed.
16. optical fiber collimators according to claim 15, is characterized in that,
Bonding and fixing lens, focus standard component and optical fiber head sidewall outside, be also fixed with gluing company the sleeve that internal diameter equals lens, focuses maximum outside diameter in standard component and optical fiber head.
17., according to claim 12 to 14 arbitrary described optical fiber collimators, is characterized in that,
Described optical fiber collimator also has sleeve pipe, and the sidewall of at least described lens and optical fiber head and internal surface of sleeve pipe are with gluing company and solidify.
18. according to claim 12 to 14 arbitrary described optical fiber collimators, and it is characterized in that, the temperature expansion coefficient focusing the material of standard component is consistent with glass.
19., according to claim 12 to 14 arbitrary described optical fiber collimators, is characterized in that, described in focus standard component profile be right cylinder, oblique circular cylinder body, four prisms cylinder or tri-prismoid.
20. according to claim 12 to 14 arbitrary described optical fiber collimators, and it is characterized in that, the angle of wherein said side end face and main shaft equals 90 degree, 86 degree, 84 degree, 82 degree or 78 degree.
21. according to claim 12 to 14 arbitrary described optical fiber collimators, and it is characterized in that, wherein said lens are spherical lens, gradient lens or non-spherical lens.
22., according to claim 12 to 14 arbitrary described optical fiber collimators, is characterized in that:
At least one in the inner side end focusing the first side end face of standard component, the second side end face, the inner side end of optical fiber head, lens has plated film on the surface.
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