CN111522100A - C-LENS LENS coupling mounting structure - Google Patents

Abstract

The invention relates to the technical field of C-LENS coupling, in particular to a C-LENS coupling installation structure. The coupling frame is provided with a cylindrical LENS mounting hole at one side for mounting the C-LENS LENS, the C-LENS LENS is arranged in the LENS mounting hole, and the outer surface of the C-LENS LENS and the inner surface of the LENS mounting hole are bonded and fixed through glue; and one side of the coupling frame for mounting the optical element is provided with a coupling hole, one end of the coupling hole is communicated with the lens mounting hole, and the other end of the coupling hole extends to the side end face of the coupling frame. The coupling frame is made of ceramic materials with proper expansion coefficients, so that the change of relative installation positions of the C-LENS LENS and the coupling frame caused by expansion with heat and contraction with cold is reduced as much as possible, and the degradation of optical transmission indexes under the condition of temperature change caused by expansion with heat and contraction with cold of other materials is eliminated.

Description

C-LENS LENS coupling mounting structure

Technical Field

The invention relates to the technical field of C-LENS coupling, in particular to a C-LENS coupling installation structure.

Background

At present, the C-lens is widely applied to optical communication passive devices, and has the functions of converting emergent light of an optical fiber into parallel light and reconverging light waves passing through an optical functional part to enter the optical fiber for transmission.

The C-LENS is of a cylindrical structure, and one end face of the C-LENS is spherical, so that the C-LENS cannot be directly, stably and reliably adhered and fixed on the surface of other optical elements, and other ways for coupling the C-LENS with the other optical elements are needed.

In the prior art, a coupling sleeve made of a glass material or a metal material is generally arranged, then, the spherical end of the C-LENS is inserted into a sleeve cavity of the coupling sleeve to be bonded and fixed, and meanwhile, other optical elements are placed into the sleeve cavity of the coupling sleeve to be bonded and fixed, a certain coupling gap is kept between the C-LENS and the optical elements, and the coupling gap is arranged according to the specific situation of an optical path.

In practice, the above-mentioned coupling sleeve has some problems. Due to the limitation of the existing processing technology, a positioning structure cannot be arranged in a coupling sleeve made of a glass material, the coupling gap between the C-LENS LENS and the optical element cannot be guaranteed to accurately reach a designed value because the C-LENS LENS and the optical element cannot be positioned when being fixed in the coupling sleeve, and the light wave transmission performance is influenced due to the deviation, so that the positions of the C-LENS LENS, the LENS sleeve and other optical elements are determined by adjusting the light path by using an adjusting frame and then are fixed by dispensing, and the operation is very troublesome.

Disclosure of Invention

The applicant aims at the defects in the prior art and provides a C-LENS coupling and mounting structure which can ensure that the C-LENS and other optical elements can be stably and reliably coupled and fixed, and the performance is not changed in the light wave transmission process.

The technical scheme adopted by the invention is as follows:

a C-LENS LENS coupling mounting structure comprises a coupling frame, wherein the coupling frame is of a cylindrical structure, a LENS mounting hole of the cylindrical structure is formed in one side, where a C-LENS LENS is mounted, of the coupling frame, a C-LENS LENS is arranged in the LENS mounting hole, the spherical end of the C-LENS LENS extends into the LENS mounting hole, the outer surface of the C-LENS LENS and the inner surface of the LENS mounting hole are fixedly bonded through glue, and the tail end of the C-LENS LENS extends out of the LENS mounting hole; one side of the coupling frame for mounting the optical element is provided with a coupling hole, one end of the coupling hole is communicated with the lens mounting hole, and the other end of the coupling hole extends to the side end face of the coupling frame; the end face of one side of the coupling frame, which is back to the C-LENS LENS, is bonded with the optical element through glue, and the optical element can completely cover the coupling hole; the centers of the C-LENS, the coupling frame and the optical element are located on the same axis.

Furthermore, the coupling frame is made of ceramic materials.

Further, the aperture size of the coupling hole is smaller than the aperture size of the lens mounting hole.

Further, the coupling hole is of a cylindrical structure.

Furthermore, an optical element mounting hole with a cylindrical structure is formed in the center of the end face of one side, back to the C-LENS LENS, of the coupling frame, one end of the optical element mounting hole is communicated with the coupling hole, the other end of the optical element mounting hole extends to the end face of the side of the coupling frame, and the optical element is fixedly bonded in the optical element mounting hole through glue.

Further, the aperture size of the optical element mounting hole is larger than the aperture size of the coupling hole.

Furthermore, the optical element adopts an optical filter, and the shape of the optical filter is a regular polygon structure.

Furthermore, the optical filter is in a regular hexagon structure.

The invention has the following beneficial effects:

the coupling frame is made of ceramic materials with proper expansion coefficients, and when the coupling frame is made of the ceramic materials with the proper expansion coefficients, the ceramic materials with the proper expansion coefficients are selected, and the expansion coefficients of the coupling frame are adjusted to be close to those of the C-LENS LENS, so that when the coupling frame and the C-LENS LENS generate expansion deformation under different environments, the expansion deformation amounts of the coupling frame and the C-LENS LENS can be relatively close, the change of relative installation positions of the C-LENS LENS and the coupling frame caused by expansion with heat and contraction with cold is reduced as much as possible, and the degradation of light transmission indexes under the condition of temperature change caused by expansion with cold of other materials is eliminated; meanwhile, the LENS mounting hole arranged in the coupling frame can ensure that the spherical end of the C-LENS LENS can be stably mounted, the side end face of the coupling frame can ensure that the optical element can be stably mounted, and the coupling hole ensures that the coupling gap between the C-LENS LENS and the optical element meets the design requirement and is kept unchanged in the using process; the optical element adopts the optical filter with the regular hexagon structure, and the size of the optical filter can be obviously reduced under the requirement of the same clear aperture, so that the utilization rate of materials is improved.

Drawings

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a half sectional view of an embodiment of the present invention.

Fig. 3 is a side view of an embodiment of the present invention.

FIG. 4 is a front view of the second embodiment of the present invention.

FIG. 5 is a two-half sectional view of an embodiment of the present invention.

FIG. 6 is a side view of an embodiment of the present invention.

Wherein: 1. a C-LENS; 2. a coupling frame; 3. an optical element; 4. a lens mounting hole; 5. a coupling hole; 6. an optical element mounting hole.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

In the first embodiment shown in fig. 1 and 2, the present invention mainly comprises a coupling frame 2, the coupling frame 2 is of a cylindrical structure, a LENS mounting hole 4 of a cylindrical structure is formed in one side of the coupling frame 2 where the C-LENS 1 is mounted, the C-LENS 1 is arranged in the LENS mounting hole 4, the spherical end of the C-LENS 1 extends into the LENS mounting hole 4, the outer surface of the C-LENS 1 and the inner surface of the LENS mounting hole 4 are fixed by gluing, and the tail end of the C-LENS extends out of the LENS mounting hole 4.

The coupling frame 2 is made of ceramic materials with adjustable expansion coefficients, and the expansion coefficients of the coupling frame 2 are adjusted to be close to that of the C-LENS LENS 1 during manufacturing, so that when the coupling frame 2 and the C-LENS LENS 1 generate expansion deformation in different environments, the expansion deformation amounts can be close to each other, and the change of the relative installation positions of the C-LENS LENS 1 and the coupling frame 2 caused by expansion is reduced as much as possible.

In the first embodiment shown in fig. 1 and 2, the side of the coupling frame 2 where the optical element 3 is mounted is provided with a coupling hole 5 having a cylindrical structure, one end of the coupling hole 5 is communicated with the lens mounting hole 4, and the other end extends to the end face of the coupling frame 2. The aperture size of the coupling hole 5 is smaller than that of the LENS mounting hole 4, and the depth size of the coupling hole 5 is set according to the coupling gap required for the C-LENS and the optical element 3.

In the first embodiment shown in fig. 2 and 3, the optical element 3 is glued to the end face of the coupling frame 2 facing away from the C-LENS 1, and the optical element 3 can completely cover the coupling hole 5.

In the first embodiment shown in fig. 1 and 2, the centers of the C-LENS 1, the coupling holder 2 and the optical element 3 are located on the same axis.

When the C-LENS optical element is used, the C-LENS 1 and the optical element 3 are coupled and fixed through the coupling frame 2, the LENS mounting holes 4 ensure that the spherical end of the C-LENS 1 can be stably mounted, the side end face of the coupling frame 2 can ensure that the optical element 3 can be stably mounted, and the coupling holes 5 ensure that the coupling gap between the C-LENS 1 and the optical element 3 meets the design requirement and is kept unchanged in the using process. The coupling frame 2 made of the ceramic material can ensure that the expansion changes of the C-LENS LENS 1 and the optical element 3 are kept basically synchronous at high temperature, and the optical transmission error caused by expansion is reduced.

In use, the cost of the optical element 3 is relatively high, and light is transmitted from the C-LENS 1 to the optical element 3 by generally only using the circular medium channel in the center of the optical element 3, and the material at the periphery of the circular medium channel does not play a role in transmitting light signals. In order to reduce the cost and the waste of the material of the optical element 3, the size of the optical element 3 needs to be reduced as much as possible, so that the optical element 3 can reduce the material cost while transmitting the optical signal.

In the second embodiment shown in fig. 4 and 5, the coupling frame 2 is provided with an optical element mounting hole 6 having a cylindrical structure at the center of the end surface on the side away from the C-LENS 1, one end of the optical element mounting hole 6 is communicated with the coupling hole 5, and the other end extends to the end surface on the side of the coupling frame 2. The optical element 3 is fixed in the optical element mounting hole 6 by glue bonding. The aperture size of the optical element mounting hole 6 is larger than the aperture size of the coupling hole 5.

Compared with the first embodiment, the optical element 3 in the second embodiment is installed in the optical element installation hole 6, so that the stability after installation is improved, the size of a product is greatly reduced, and the material cost is reduced.

In the second embodiment shown in fig. 6, the optical filter is used as the optical element 3, and in a most preferred embodiment, the optical filter has a regular hexagonal structure, and the optical filter is most economical. The shape of the optical filter can also be other regular polygonal structures.

In the prior art, due to the limitation of processing equipment and processes, all optical filters are in a quadrilateral structure. According to the invention, the laser cutting machine is adopted, so that the quartz wafer for manufacturing the optical filter can be cut into the regular polygon structure, the size of the optical filter with the regular polygon structure can be obviously reduced under the requirement of the same clear aperture, and the utilization rate of materials is improved.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims (8)

1. A C-LENS coupling mounting structure comprising a coupling frame (2), characterized in that: the coupling frame (2) is of a cylindrical structure, one side, provided with the C-LENS LENS (1), of the coupling frame (2) is provided with a LENS mounting hole (4) of a cylindrical structure, the C-LENS LENS (1) is arranged in the LENS mounting hole (4), the spherical end of the C-LENS LENS (1) extends into the LENS mounting hole (4), the outer surface of the C-LENS LENS (1) and the inner surface of the LENS mounting hole (4) are fixedly bonded through glue, and the tail end of the C-LENS LENS (1) extends out of the LENS mounting hole (4); one side of the coupling frame (2) for mounting the optical element (3) is provided with a coupling hole (5), one end of the coupling hole (5) is communicated with the lens mounting hole (4), and the other end of the coupling hole extends to the side end face of the coupling frame (2); the end face of one side, back to the C-LENS LENS (1), of the coupling frame (2) is bonded with the optical element (3) through glue, and the optical element (3) can completely cover the coupling hole (5); the centers of the C-LENS (1), the coupling frame (2) and the optical element (3) are positioned on the same axis.

2. A C-LENS coupling mounting structure as claimed in claim 1, wherein: the coupling frame (2) is made of ceramic materials.

3. A C-LENS coupling mounting structure as claimed in claim 1, wherein: the aperture size of the coupling hole (5) is smaller than that of the lens mounting hole (4).

4. A C-LENS coupling mounting structure as claimed in any one of claims 1 to 3, wherein: the coupling hole (5) is of a cylindrical structure.

5. A C-LENS coupling mounting structure as claimed in claim 1 or 2, wherein: the coupling frame (2) is equipped with optical element mounting hole (6) of cylindrical structure dorsad C-LENS LENS (1) one side terminal surface center, and optical element mounting hole (6) one end and coupling hole (5) intercommunication, the other end extend to coupling frame (2) side terminal surface, and optical element (3) are fixed in optical element mounting hole (6) through the glue bonding.

6. A C-LENS coupling mounting structure as claimed in claim 5, wherein: the aperture size of the optical element mounting hole (6) is larger than that of the coupling hole (5).

7. A C-LENS coupling mounting structure as claimed in claim 5, wherein: the optical element (3) adopts an optical filter, and the shape of the optical filter is a regular polygon structure.

8. A C-LENS coupling mounting structure as claimed in claim 7, wherein: the optical filter is in a regular hexagon structure.

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