CN211698280U - Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector - Google Patents
Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector Download PDFInfo
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- CN211698280U CN211698280U CN202020134559.4U CN202020134559U CN211698280U CN 211698280 U CN211698280 U CN 211698280U CN 202020134559 U CN202020134559 U CN 202020134559U CN 211698280 U CN211698280 U CN 211698280U
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Abstract
The utility model provides an utilize wedge angle piece to realize coaxial structure of light and collimater and photoelectric detector. The structure for realizing light coaxiality by utilizing the wedge angle piece comprises a receiving piece and a connector serving as an inserting piece, wherein an optical fiber is arranged in the connector, the light emergent end face of the optical fiber is an inclined plane, the wedge angle piece is arranged on one side of the receiving piece, which corresponds to the light emergent side of the connector, the wedge angle piece is opposite to the end face of the connector, and the inclination angle direction is opposite. The wedge angle piece adopts proper materials and included angles, so that the refracted light emitted by the optical fiber inserting core can be corrected to be coaxial with the incident light. The utility model discloses still provide the collimator and the photoelectric detector that utilize above-mentioned structure, the light-emitting one side installation ball lens or the photoelectric detector of wedge piece constitute collimator or photoelectric detector in outer cover intraductal.
Description
Technical Field
The utility model belongs to the technical field of optical device, especially, relate to an utilize wedge angle piece to realize coaxial structure of light and collimater and photoelectric detector.
Background
In some plug-in or plug-in optical device applications, various optical fiber connectors and functional devices with adapters are required to be used as plug-in structures, so that various functional devices can be conveniently and quickly formed. In such applications, the optical fiber connectors are no longer connected to the same type of connector, but are often air media. Light passing through two media with different refractive indexes (such as optical fiber and air) generates Fresnel reflection, and the reflection causes the reduction of return loss, thereby having great influence on a front-end system.
Fig. 1, a prior art schematic. When a flat end face optical fiber connector (FC/UPC) is adopted as a pluggable or pluggable structure, the return loss is directly and greatly reduced by the vertical end face. To solve this problem, ramp connectors (e.g., FC/APC) are commonly used in the prior art. Although this approach increases the return loss, the outgoing light is deflected at an angle (into refracted light) at the end face, so that the light of the system is no longer coaxial. Fig. 2, a schematic diagram of a prior art solution. In order to make the light coaxial, in some designs, the connector is pre-angled so that the light exiting from the inclined plane is substantially horizontal, thereby making the light coaxial. In the solution of fig. 2, the ferrule b of the optical fiber ferrule a is formed to be inclined to form an angle with the housing c equal to the angle of refraction of light, thus correcting the outgoing light to be parallel to the housing c so as to be coaxial with the ball lens d. However, such design structure is complex, which increases the processing difficulty of the product.
In order to solve the above problems in the prior art, the present invention provides a new structure, which utilizes the wedge angle sheet to realize the coaxial light, and provides the collimator and the photodetector with the structure.
Disclosure of Invention
Fig. 3a and 3b are schematic diagrams of the present invention. The emergent light of the optical fiber at the inclined surface connector has a refraction angle, a wedge angle sheet with opposite inclination angle directions is added in front of the emergent light, and the light can generate reverse refraction after entering the wedge angle sheet. In fig. 3a, the wedge angle piece is made of a material having the same refractive index as the optical fiber, so that the included angle of the wedge angle piece is opposite to the direction of the inclination angle of the end face of the connector, and the direction of light can be corrected to be horizontal and coaxial with the incident light of the optical fiber. In fig. 3b, the refractive index of the wedge sheet is different from that of the optical fiber, but the required included angle θ can be obtained by simple calculation based on the optical principle, and the direction of light can be corrected to be the horizontal direction and coaxial with the incident light of the optical fiber. The wedge angle pieces of the present invention include the above two types of wedge angle pieces, which are not particularly distinguished, and are also shown in the figures of the embodiments in the same manner as the shape of the wedge angle piece in fig. 3 a. Strictly speaking, the emergent light direction passing through the wedge angle sheet is the same as the incident light direction of the optical fiber, but a tiny parallel displacement which can be ignored in engineering exists, and the coaxial emergent light and the incident light is a reasonable approximate expression.
The utility model discloses a concrete technical scheme is:
a structure for realizing light coaxiality by utilizing a wedge angle sheet. The connector comprises a bearing piece and a connector used as an insertion piece, wherein an optical fiber is arranged in the connector, the light emergent end face of the connector is an inclined plane, a wedge angle piece is arranged on one side of the bearing piece corresponding to the light emergent of the connector, the wedge angle piece is opposite to the end face of the connector, and the direction of the inclined angle is opposite.
Preferably, the connector is an optical fiber ferrule, the bearing member is a layer of sleeve, and the wedge angle piece is fixedly installed on the light emergent side of the sleeve corresponding to the optical fiber ferrule. We refer to this scheme as structure i.
In another preferred scheme, the connector is an optical fiber ferrule, the bearing piece is an inner sleeve and an outer sleeve (also called as a shell) which are coaxial, the optical fiber ferrule is inserted into the inner sleeve, and the wedge angle sheet is arranged in a space where the outer sleeve is longer than the inner sleeve. The light-emitting end face of the optical fiber ferrule is an inclined plane, and the wedge angle piece and the light-emitting end face of the optical fiber ferrule are opposite in inclination angle direction. We refer to this scheme as structure ii.
Preferably, one or more of the light-emitting surface of the optical fiber ferrule, the light-entering surface of the wedge angle sheet and the light-emitting surface of the wedge angle sheet is/are coated with an antireflection film to increase light transmission.
According to the principle, the wedge angle piece adopts proper materials and included angles, so that refracted light emitted by the optical fiber inserting core can be corrected to be coaxial with incident light.
The present invention also provides two kinds of optical functional members using the above structure (including the above preferred structure).
One is in the collimator.
The technical scheme of utilizing the structure I is as follows: an outer sleeve is additionally arranged on the structure I, and a collimator lens is arranged in the middle of the outer sleeve on the light emergent side of the wedge angle sheet to form a collimator. Structure I can be fixed to an organic whole piece in this scheme, the relative outer sleeve pipe plug of whole.
The technical scheme of utilizing the structure II is as follows: and a lens is arranged in the middle of the outer layer sleeve on the light emergent side of the wedge angle sheet in the structure II to form the collimator.
The other is applicable to a pluggable photoelectric detector.
The technical scheme of utilizing the structure I is as follows: an outer sleeve is additionally arranged on the structure I, and a photoelectric detection piece is arranged in the middle of the outer sleeve on the light emergent side of the wedge angle sheet to form the photoelectric detector. Structure I can be fixed to an organic whole piece in this scheme, the relative outer sleeve pipe plug of whole.
The technical scheme of utilizing the structure II is as follows: and an electric detecting piece is arranged in an outer layer sleeve on the light emergent side of the wedge angle sheet in the structure II to form a photoelectric detector.
The utility model provides an among all technical scheme, lock pin and sleeve pipe, inlayer sleeve pipe and outer sleeve pipe, can be pluggable swing joint, also can fixed connection.
Drawings
FIG. 1 is a schematic diagram of the prior art;
FIG. 2 is a schematic diagram of a prior art solution;
fig. 3a and 3b are schematic diagrams illustrating the principle of the present invention;
fig. 4 and 5 are schematic diagrams of a structure for realizing optical coaxiality by using a wedge angle sheet according to the present invention;
fig. 6 and 7 are schematic diagrams of collimators of a structure for realizing optical coaxiality by using wedge angle sheets according to the present invention;
fig. 8 and 9 are schematic diagrams of a photodetector using the structure for realizing optical coaxiality by using the wedge angle plate of the present invention.
In the figure: i-structure I, II-structure II, 1-optical fiber core insert, 2-wedge angle sheet, 3-sleeve, 3.1-inner layer sleeve, 3.2-outer layer sleeve, 4-optical fiber, 5-ball lens and 6-photoelectric detection piece.
Detailed Description
Fig. 4 and 5 show a structure of the present invention for realizing optical coaxiality by using a wedge.
As shown in fig. 4, the structure of the present invention is shown as i. The wedge 2 is fixed on one side of the sleeve 3 in advance, and the optical fiber inserting core 1 containing the optical fiber 4 is inserted into the sleeve 3 from the other side of the sleeve 3 to a position close to but not contacting the wedge 2. The light-emitting end face of the optical fiber ferrule 1 is an inclined face, and the wedge angle piece 2 and the light-emitting end face of the optical fiber ferrule 1 are opposite in inclination angle direction. As described above, the wedge angle piece 2 can correct the refracted light emitted from the optical fiber ferrule to be coaxial with the incident light by using appropriate materials and included angles.
As shown in fig. 5, the structure ii of the present invention is shown. The sleeve consists of an inner sleeve 3.1 and an outer sleeve 3.2 which are coaxial, the optical fiber ferrule 1 is inserted in the inner sleeve 3.1, and the wedge angle piece 2 is arranged in a space of the outer sleeve 3.2 which is longer than the inner sleeve. The light-emitting end face of the optical fiber ferrule 1 is an inclined face, and the wedge angle piece 2 and the light-emitting end face of the optical fiber ferrule 1 are opposite in inclination angle direction.
Fig. 6 and 7 show a collimator with a structure for realizing light coaxiality by using wedge angle plates according to the present invention.
The technical scheme shown in figure 6 is that a collimator is formed by utilizing a structure I, an outer sleeve 3.2 is additionally arranged outside the structure I, and a square ball lens 5 is arranged in the outer sleeve 3.2 on the light emergent side of a wedge angle sheet 2. Structure I can be fixed to an organic whole in this scheme, the whole relative outer sleeve pipe 3.2 plug.
The technical scheme shown in fig. 7 is that a collimator is formed by arranging a ball lens in an outer sleeve 3.2 on the light emergent side of a wedge angle sheet 2 by using a structure II.
Fig. 8 and 9 show a photodetector adopting the structure of the present invention, which utilizes the wedge-angle plate to realize the optical coaxiality.
The technical scheme shown in fig. 8 is that a photoelectric detector is formed by utilizing a structure I, an outer sleeve 3.2 is additionally arranged outside the structure I, and a photoelectric detection piece 6 is arranged in the outer sleeve 3.2 at the light emergent side of a wedge angle sheet 2. Structure I can be fixed to an organic whole in this scheme, the whole relative outer sleeve pipe 3.2 plug.
In the technical scheme shown in fig. 7, a photoelectric detector is formed by arranging a photoelectric detection piece 6 in an outer casing 3.2 on the light emergent side of a wedge angle piece 2 by utilizing a structure II.
In the above embodiments, the ferrule and the sleeve, and the inner sleeve and the outer sleeve may be connected movably or fixedly. One or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films to increase light transmission.
Claims (10)
1. The utility model provides an utilize wedge angle piece to realize coaxial structure of light, includes the connector of accepting the piece and as the plug-in components connector, there is optic fibre at the connector center, its characterized in that: the light-emitting end face of the connector is an inclined face, and a wedge angle piece is arranged on one side, corresponding to the light-emitting end face of the connector, of the receiving piece, the wedge angle piece is opposite to the end face of the connector, and the direction of the inclined angle is opposite.
2. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: the connector is an optical fiber ferrule, the bearing piece is a sleeve, and the wedge angle piece is fixedly arranged in the sleeve and corresponds to the light emergent side of the optical fiber ferrule.
3. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: the connector is an optical fiber ferrule, the bearing piece is composed of an inner sleeve and an outer sleeve which are coaxial, the optical fiber ferrule is inserted into the inner sleeve, and the wedge angle sheet is arranged in a space where the outer sleeve is longer than the inner sleeve.
4. A structure for realizing optical coaxiality by using a wedge of claim 1, wherein: one or more surfaces of the light-emitting surface of the connector, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
5. A collimator, characterized by: in addition to the structure of claim 2 in which the light-coaxial is realized by the wedge plate, an outer sleeve is added, in which the light-emitting side of the wedge plate is provided with a lens.
6. A collimator, characterized by: the structure for realizing light coaxiality by using the wedge angle sheet as claimed in claim 3, wherein a lens is arranged on the light-emitting side of the wedge angle sheet in the outer sleeve.
7. A collimator according to claim 5 or 6, characterized in that: one or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
8. A photodetector, characterized by: in addition to the structure of claim 2 in which the light-coaxial is realized by the wedge angle piece, an outer sleeve is added, and a photoelectric detection piece is installed on the light-emitting side of the wedge angle piece in the outer sleeve.
9. A photodetector, characterized by: the structure for realizing optical coaxiality by using the wedge angle sheet in the outer sleeve comprises the structure for realizing optical coaxiality by using the wedge angle sheet in claim 3, wherein a photoelectric detection piece is arranged on the light-emitting side of the wedge angle sheet in the outer sleeve.
10. A photodetector according to claim 8 or 9, characterised in that: one or more surfaces of the light-emitting surface of the optical fiber ferrule, the light-in surface of the wedge angle sheet and the light-emitting surface are plated with antireflection films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134559.4U CN211698280U (en) | 2020-01-20 | 2020-01-20 | Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020134559.4U CN211698280U (en) | 2020-01-20 | 2020-01-20 | Structure for realizing light coaxiality by utilizing wedge angle sheet, collimator and photoelectric detector |
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| CN211698280U true CN211698280U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123443A (en) * | 2020-01-20 | 2020-05-08 | 嘉兴旭锐电子科技有限公司 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123443A (en) * | 2020-01-20 | 2020-05-08 | 嘉兴旭锐电子科技有限公司 | Structure for realizing optical coaxiality by utilizing wedge angle sheet and application thereof |
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