CN112630895A - Flange type unbiased collimator, manufacturing method and coupling structure - Google Patents
Flange type unbiased collimator, manufacturing method and coupling structure Download PDFInfo
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- CN112630895A CN112630895A CN202011603639.0A CN202011603639A CN112630895A CN 112630895 A CN112630895 A CN 112630895A CN 202011603639 A CN202011603639 A CN 202011603639A CN 112630895 A CN112630895 A CN 112630895A
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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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Abstract
The invention provides a flange type unbiased collimator, a manufacturing method and a coupling structure. A flange-type unbiased collimator includes a flange sleeve composed of a flange part and a sleeve part, a tail fiber and a lens are arranged in the sleeve, and the lens is close to one side of the flange part. The tail fiber is tightly matched with the flange sleeve and used for fixing the output position of the collimated light beam, so that the output point of the light beam is on the axis of the sleeve, a certain gap is reserved between the periphery of the lens and the inner wall of the sleeve, the position of the lens can be adjusted, the output direction of the collimated light beam is adjusted, the direction of the light beam is completely perpendicular to the end face of the flange, and the lens with the adjusted position is fixed in a bonding mode. The coupling structure can directly align and attach the flange surfaces of the two flange type unbiased collimators, and a window sheet can be added between the flanges; coupling may also be employed with connecting members. The flange type unbiased collimator and the coupling structure of various structures have the advantages of convenience in installation and strong interchangeability.
Description
Technical Field
The invention belongs to the technical field of optical devices, and particularly relates to a flange type unbiased collimator.
Background
The flange type collimator is generally used for structural design of front end face installation, is of a T-shaped structure, and utilizes a flange face as a fixed installation face. As shown in fig. 1, the sleeve 11 of the flange sleeve 1 is provided with the pigtail 2 and the lens 3' to form a flange type collimator, and since the precision of machining and installation cannot meet the requirement of optical precision, the output direction of the emergent beam always has a certain angle and cannot be completely perpendicular to the flange surface 13 of the flange 12. As shown in fig. 2, the conventional flange collimator generally needs to be adjusted by matching with a two-dimensional adjusting bracket, or an angle is adjusted by using elastic deformation of the O-shaped rubber gasket 4 to change the direction of the flange collimator, so that the two collimators can be aligned and coupled with each other.
In the prior art, an adjusting method is provided, so that a gap is left between the tail fiber and the sleeve, and the position of the tail fiber is adjusted in the radial direction until the emergent light is parallel to the sleeve in the axial direction. However, this direction can only adjust the direction of the light beam, and cannot adjust the light exit position. I.e. it can only be adjusted so that the beam is parallel to the axis of the sleeve and not coaxial with the axis. The coupling effect is still significantly reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a novel flange-type unbiased collimator, which can enable the light beam output by the collimator to be completely vertical to the flange surface and to be basically coaxial with the mechanical axis of a sleeve.
The technical scheme of the invention is that the flange type unbiased collimator comprises a flange sleeve composed of a flange part and a sleeve part which are perpendicular to each other, wherein a tail fiber and a lens are arranged in the sleeve, and the lens is close to one side of the flange part. It is characterized in that the existing flange type unbiased collimator is distinguished: the tail fiber is tightly matched with the flange sleeve and used for fixing the output position of the collimated light beam, the output point of the light beam is on the axis of the sleeve, the radial direction of the lens is smaller than the inner diameter of the sleeve, a certain gap is reserved between the periphery of the lens and the inner wall of the sleeve, the position of the lens can be adjusted, the output direction of the collimated light beam is adjusted, the direction of the light beam is completely vertical to the end face of the flange, and the lens with the adjusted position is fixed in a bonding mode. The axial distance between the lens and the tail fiber can be adjusted by pushing and pulling the tail fiber forwards and backwards and can also be adjusted by moving the lens forwards and backwards. The dimming before the lens is fixed by gluing can adopt the dimming method of the optical device in the prior art.
Furthermore, the lens can be fixed with the sleeve or directly fixed with the end face of the tail fiber. Therefore, the lens periphery and the inner wall of the sleeve have a certain clearance in the invention, which only means that a certain clearance is formed between the lens periphery and the inner wall of the sleeve before the lens is fixed. The lens may be fixed with glue filling the voids.
As the preferred scheme, one end of the sleeve close to the flange is in a step shape with the expanded inner diameter, and one part of the lens is arranged on the step part and is fixed with the step part, so that the design can facilitate the adjustment and the fixation of the lens; it is also possible to place the lens entirely on the stepped portion, so that a larger diameter lens can be used.
Preferably, the sleeve portion of the sleeve flange comprises a plurality of parallel holes forming a plurality of parallel sleeves, forming an array flange type unbiased collimator. The outer periphery of the sleeve flange may be circular, square or other shape.
The flange type collimator of the invention outputs light beams which are collimated and expanded light spots and are basically coaxial with the sleeve, reduces the coupling difficulty and can conveniently realize the coupling between the collimators.
The utility model also further provides the coupling structure of above-mentioned flange type collimater, realizes the alignment coupling of collimater.
The coupling structure is characterized in that the flange end faces of two flange type collimators are directly attached and fixed. The flange part can be provided with a guide pin hole and positioned by a guide pin. The fixing mode can be screw joint, adhesive joint or magnetic attraction.
As the preferred scheme, the window sheets with uniform thickness are clamped between the flange end faces of the two flange type collimators and then fixed. The window plate may be any solid optically transparent material, such as a quartz plate. Under the condition that the flange part is positioned by using the guide pin, a smaller window sheet can be adopted to give way to the position of the guide pin hole; or the window sheet is provided with holes corresponding to the positions of the guide pin holes of the flange part.
In some applications, a collimator is fixed to the device, and the collimator coupled thereto needs to be frequently disassembled and assembled, so that the fixed collimator lens is easily contaminated by dust, moisture, and the like. By using the flange type collimator, the window sheet can be arranged on the flange surface of the collimator at one fixed end, and the effects of air tightness, water tightness and dust prevention are achieved.
And the other coupling structure can realize the structure for converting the 90-degree direction of the optical path. The right-angle converter comprises a right-angle connecting plate and a conversion mirror, wherein the right-angle connecting plate is a right angle, and light through holes which correspond to each other and are matched with the flange type collimator are formed in two surfaces of the right-angle connecting plate. The two flange type collimators are respectively fixed with two outer angle surfaces of the right-angle connecting plate, and the conversion mirror is a right-angle prism or a reflecting mirror arranged at 45 degrees and fixed with the inner angle surface of the connecting plate. Thus, the light from the light collimator enters the right-angle prism through the light through hole of the connecting plate, and is reflected by 90 degrees and enters the coupled incident light collimator through the light through hole of the other plate surface of the connecting plate.
Another coupling structure is a connector for coupling. The connector is composed of a connector containing a flange type collimator and a bridging sleeve. The spring in the connector applies radial external thrust to the flange type collimator, the inner diameter of the bridging sleeve is tightly matched with the flange part, when the two connectors are inserted into the bridging sleeve from two sides, the two flange type collimators meet in the middle of the bridging sleeve, and the end faces of the two flange type collimators are attached under elastic pressure. The connector is in threaded connection or clamping connection with the bridging sleeve. The periphery of the bridging sleeve can be provided with a mounting flange so as to be convenient for mounting other components.
One preferable scheme of the coupling structure is that a vertical window sheet is arranged in the middle of the bridging sleeve, and the flange end faces of the two flange-type collimators are respectively attached to the window sheets on two sides.
The flange type unbiased collimator and the coupling structure of various structures have the advantages of convenience in installation and strong interchangeability.
Drawings
FIG. 1 is a schematic diagram of a prior art flange-type collimator;
FIG. 2 is a schematic diagram of a coupling structure of a prior art flange-type collimator;
FIG. 3 is a schematic view of an example of a flange-type unbiased collimator 1 of the present invention;
FIG. 4 is a schematic view of an example 2 of a flange-type unbiased collimator according to the present invention;
FIG. 5 is a schematic view of an example 3 of a flange-type unbiased collimator of the present invention;
fig. 6a, 6b, 6c are schematic views of an example 4 of a flange-type unbiased collimator according to the present invention, where fig. 6a is a view of the flange end face, fig. 6b is a schematic view of fig. 6a taken along a-a section, and fig. 6c is a schematic perspective view;
fig. 7a, 7b, 7c are schematic views of an example 5 of a flange-type unbiased collimator according to the present invention, in which fig. 7a is a view of an end face of a flange, fig. 7b is a schematic view of fig. 7a taken along a-a, and fig. 7c is a schematic perspective view;
fig. 8 is a schematic diagram of a flange-type unbiased collimator coupling structure embodiment 1 according to the present invention;
fig. 9 is a schematic diagram of a flange-type unbiased collimator coupling structure of embodiment 2 of the present invention;
fig. 10 is a schematic diagram of a flange-type unbiased collimator coupling structure embodiment 3 of the present invention;
11a, 11b and 11c are schematic diagrams of a flange-type unbiased collimator coupling structure embodiment 4 according to the present invention;
fig. 12a, 12b, and 12c are schematic diagrams of a flange-type unbiased collimator coupling structure in embodiment 5 of the present invention, where fig. 12a is a perspective schematic diagram of an external structure, fig. 12b is a schematic cross-sectional diagram before installation, and fig. 12c is a schematic cross-sectional diagram after coupling installation.
In the figure: 1-flange sleeve, 11-sleeve part, 12-flange part, 13-flange end face, 14-sleeve step part, 15-guide pin hole, 2-tail fiber, 3-lens, 3' -lens in the prior art, 4-O-shaped gasket in the prior art, 5-window piece, 6-right angle converter, 61-right angle connecting plate, 62-clear hole, 63-connecting plate guide pin hole, 71-right angle prism, 72, reflector, 8-connector, 81-spring, 9-bridge sleeve and 91-mounting flange.
Detailed Description
Flange type unbiased collimator
Example 1
A flange-type unbiased collimator and a method of manufacture are set forth. Referring to fig. 3, a flange-type unbiased collimator includes a flange sleeve 1 composed of a flange portion 12 and a sleeve portion 11 perpendicular to each other, the flange portion having guide pin holes 15 near the outer periphery. The sleeve is provided with a pigtail 2 and a lens 3, and the lens 3 is arranged on the side close to the flange part 12. The tail fiber 2 is tightly matched with the inner wall of the sleeve part 11 and is used for fixing the output position of the collimated light beam, so that the output point of the light beam is on the axis of the sleeve; the radial direction of lens 3 is less than the sleeve pipe internal diameter, and lens 3 periphery has certain clearance with the sleeve pipe inner wall, can adjust the position of lens to adjust the output direction of collimated light beam, make the light beam direction perpendicular to flange terminal surface completely, the lens cementing of position regulation is fixed. The axial distance between the lens and the 3 tail fiber 2 can be adjusted by pushing and pulling the tail fiber back and forth or by moving the lens back and forth. The dimming of the lens 3 before the gluing and fixing can be performed by the dimming method of the optical device in the prior art.
The lens 3 may be fixed to the ferrule or directly to the end face of the pigtail 2.
The manufacturing method of the other embodiments is the same as that of the present embodiment. The following is not repeated.
Example 2
As shown in fig. 4, this example differs from embodiment 1 in that: the sleeve portion 11 is formed at one end thereof close to the flange portion 12 in a stepped portion 14 having an enlarged inner diameter, and a part of the lens 3 is placed on and fixed to the stepped portion. This design may facilitate adjustment and fixation of the lens.
Example 3
As shown in fig. 5, this example differs from embodiment 2 in that: the lens 3 is entirely disposed within the stepped portion 14. This allows the use of larger diameter lenses.
Example 4
As shown in fig. 6a, 6b, and 6c, the difference between this embodiment and embodiment 1 is that the sleeve portion 11 of the sleeve flange 1 includes a plurality of parallel holes to form a plurality of parallel sleeves, the pigtails 2 and the lenses 3 are disposed in each sleeve in the manner of embodiment 1 to form an array type flange-type unbiased collimator, and the outer circumference of the sleeve flange is circular.
Example 5
As shown in fig. 7a, 7b, and 7c, the present embodiment is different from embodiment 4 in that the outer circumference of the sleeve flange is rectangular.
(II) coupling structure of flange type unbiased collimator
The invention further provides a coupling structure of the flange type unbiased collimator, and the alignment coupling of the collimator is realized.
Example 1
As shown in fig. 8, the flange part 12 of the flange-type unbiased collimator is provided with guide pin holes 15, and the two flange end faces 13 of the flange-type unbiased collimator are directly attached to each other by positioning with guide pins. The fixing mode can be screw joint, adhesive joint or magnetic attraction. Because the light beam is subjected to unbiased collimation and is coaxial with the axis of the sleeve, accurate coupling can be realized only by aligning and attaching two flange-type unbiased collimators with the same specification oppositely.
Example 2
As shown in fig. 9, the present embodiment is different from embodiment 1 in that: and a window sheet 5 with uniform thickness is clamped between the flange end faces 13 of the two flange unbiased collimators and then fixed. The window plate may be any solid optically transparent material, such as a quartz plate. The size of the window piece 5 can be set aside the position of the guide pin hole 15.
Example 3
As shown in fig. 10, the present embodiment is different from embodiment 2 in that: a large window sheet 5 is adopted, and holes are formed in the window sheet 5 at the positions, corresponding to the flange part guide pin holes 15, of the window sheet 5.
In some applications, a collimator is fixed to the device, and the collimator coupled thereto needs to be frequently disassembled and assembled, so that the fixed collimator lens is easily contaminated by dust, moisture, and the like. By using the flange type collimator of the embodiment, the window sheet can be arranged on the flange surface of the collimator at one fixed end, so that the effects of air tightness, water tightness and dust prevention are achieved.
Example 4
As shown in fig. 11a, 11b, and 11c, the coupling structure of the present embodiment can realize 90-degree direction conversion of the optical path. The right-angle converter 6 comprises a right-angle connecting plate 61 and a conversion mirror, and light through holes 62 which correspond to each other and are matched with the flange type collimator are formed in two surfaces of the right-angle connecting plate 61. The two flange collimators are respectively fixed with two outer angle surfaces of the right-angle connecting plate 61, and the conversion mirror is fixed with an inner angle surface of the connecting plate. The transfer mirror in fig. 11b is a right-angled prism 71, the two right-angled faces of which abut the two inner-angled faces of the right-angled connecting plate 61, and in fig. 11c the transfer mirror is a 45-degree mirror, the back of which is seen. Thus, the light exiting the light-collimator passes through the clear aperture 62 of the link, is reflected by the conversion mirror through 90 degrees, and enters the coupled-in light-collimator through the clear aperture of the other plate of the right-angle link 61.
In the drawings of the present embodiment, an array type flange collimator having a rectangular outer periphery according to the present invention is used, and actually, a flange type collimator according to any embodiment of the present invention may also be used.
Example 5
Fig. 12a, 12b, and 12c show a coupling structure in which coupling is performed by a connector according to the present embodiment. The connector is formed by a coupling head 8 comprising a flange-type collimator and a bridging sleeve 9. The connectors are provided with springs 81 for applying radial outward thrust to the flange type unbiased collimator, the middle part in the bridging sleeve is provided with a vertical window sheet 5, the inner diameter of the bridging sleeve 9 is tightly matched with the flange part 12, and when the two connectors are inserted into the bridging sleeve 9 from two sides, the flange end surfaces 13 of the two flange type collimators are respectively attached to the window sheets 5 at two sides under elastic pressure. The connector is in threaded connection or clamping connection with the bridging sleeve. A mounting flange 91 is provided around the outer periphery of the bridging sleeve 9 for easy mounting to other components.
The flange type unbiased collimator and the coupling structure of various structures have the advantages of convenience in installation and strong interchangeability.
Claims (14)
1. The utility model provides a flange type unbiased collimator, includes flange sleeve pipe (1) that constitutes by mutually perpendicular's flange portion (12) and sleeve pipe portion (11), and the sleeve pipe embeds has tail-fiber (2) and lens (3), and lens (3) are close to flange portion (12) one side, characterized by: the tail fiber (2) is tightly matched with the inner wall of the sleeve part (11), the lens (3) is radially smaller than the inner diameter of the sleeve, and the lens (3) is fixed with the inner wall of the sleeve or the end face of the tail fiber (2).
2. A flange-type unbiased collimator as claimed in claim 1, characterized in that: the flange part (12) is provided with a guide pin hole (15) close to the periphery.
3. A flange-type unbiased collimator as claimed in claim 1, wherein: one end of the sleeve part (11) close to the flange part (12) is a step part (14) with an enlarged inner diameter, and part or all of the lens (3) is arranged in the step part (14) and fixed with the step part (14).
4. A flange-type unbiased collimator as claimed in claim 1, wherein: the sleeve part (11) of the sleeve flange (1) comprises a plurality of parallel holes to form a plurality of parallel sleeves and form an array type flange type unbiased collimator, and the periphery of the sleeve flange is circular or rectangular.
5. A method for manufacturing a flange-type unbiased collimator is characterized by comprising the following steps: the flange-type unbiased collimator is the flange-type unbiased collimator as claimed in one of claims 1) to 4, and comprises a flange sleeve (1) composed of a flange part (12) and a sleeve part (11) which are perpendicular to each other, a pigtail (2) and a lens (3) are arranged in the sleeve, the lens (3) is close to one side of the flange part (12), and the pigtail (2) and the inner wall of the sleeve part (11) are tightly matched to fix the output position of the collimated light beam, so that the output point of the light beam is on the axis of the sleeve; the radial direction of the lens (3) is smaller than the inner diameter of the sleeve, a certain gap is formed between the periphery of the lens (3) and the inner wall of the sleeve, and the position of the lens is adjusted to adjust the output direction of the collimated light beam so that the direction of the light beam is perpendicular to the end face of the flange; the axial distance between the lens and the tail fiber (2) of the optical fiber (3) is adjusted by pushing and pulling the tail fiber (2) back and forth and/or moving the lens back and forth, and the lens (3) with the adjusted position is fixed by gluing.
6. A coupling structure of a flange type unbiased collimator is characterized in that: the flange-type unbiased collimator as claimed in any one of claims 1 to 4, wherein guide pin holes (15) are formed in the flange portion (12) of the flange-type unbiased collimator, and the flange end faces (13) of the two flange-type unbiased collimators are tightly attached and fixed by using guide pins for positioning.
7. The coupling structure of a flange-type unbiased collimator as claimed in claim 6, wherein: the two flange type collimators are fixed by screw connection or adhesive connection or magnetic attraction.
8. The coupling structure of a flange-type unbiased collimator as claimed in claim 6, wherein: and a window sheet (5) with uniform thickness is clamped between the flange end faces (13) of the two flange unbiased collimators.
9. A coupling structure of a flange type unbiased collimator is characterized in that: the said flange type unbiased collimator is the flange type unbiased collimator as in one of claims 1 to 4, having a right angle converter (6) including a right angle link plate (61) and a conversion mirror, the two faces of the right angle link plate (61) having light through holes (62) corresponding to each other and matching with the flange type collimator; the two flange type collimators are respectively fixed with two outer angle surfaces of the right-angle connecting plate (61), and the conversion mirror is fixed with an inner angle surface of the connecting plate.
10. The coupling structure of a flange-type unbiased collimator as claimed in claim 9, wherein: the conversion mirror is a right-angle prism (71), and two right-angle surfaces of the right-angle prism (71) are fixedly attached to two inner-angle surfaces of the right-angle connecting plate (61).
11. The coupling structure of a flange-type unbiased collimator as claimed in claim 9, wherein: the conversion mirror is a reflecting mirror (72) arranged at 45 degrees and fixed with the inner angle surface of the right-angle connecting plate (61).
12. A coupling structure of a flange type unbiased collimator is characterized in that: the flange type unbiased collimator is the flange type unbiased collimator as in one of claims 1 to 4, and is composed of a connector (8) and a bridging sleeve (9) which comprise the flange type collimator, a spring (81) is arranged in the connector and applies radial outward thrust to the flange type unbiased collimator, the inner diameter of the bridging sleeve (9) is tightly matched with the flange part (12), the two connectors are inserted into the bridging sleeve (9) from two sides, the flange end faces (13) of the two flange type collimators are jointed in the middle part in the bridging sleeve (9) under elastic pressure, and the connector is in threaded connection or clamped connection with the bridging sleeve.
13. A coupling structure of a flange-type unbiased collimator as claimed in claim 12, wherein: the middle part in the bridging sleeve 9 is provided with a vertical window sheet (5), and the two flange end faces (13) are respectively attached to the window sheets (5) at two sides.
14. A coupling structure of a flange-type unbiased collimator as claimed in claim 12 or 13, wherein: and a mounting flange (91) is arranged on the periphery of the bridging sleeve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011603639.0A CN112630895A (en) | 2020-12-29 | 2020-12-29 | Flange type unbiased collimator, manufacturing method and coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011603639.0A CN112630895A (en) | 2020-12-29 | 2020-12-29 | Flange type unbiased collimator, manufacturing method and coupling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112630895A true CN112630895A (en) | 2021-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011603639.0A Pending CN112630895A (en) | 2020-12-29 | 2020-12-29 | Flange type unbiased collimator, manufacturing method and coupling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112630895A (en) |
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2020
- 2020-12-29 CN CN202011603639.0A patent/CN112630895A/en active Pending
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