CN102236126B - Method for correcting optical fiber coupling connector forming die - Google Patents

Abstract

A method for calibrating a forming mold of an optical fiber coupling connector includes: providing a first mold. The first optical fiber coupling connector is formed by using the first mold, and the first connector includes a first transparent body with a first transmission surface, a first blind hole and an optical lens on the first transmission surface. Taking the center of the first transmission surface as a reference, the position of the center of the optical lens is measured. A second mold is provided. The second optical fiber coupling connector is molded by a second mold, the second connector includes a second transparent body with a second transmission surface, and a second blind hole, the second connector does not include an optical lens on the second transmission surface, and the second connector does not include an optical lens on the second transmission surface. The center of the second transmission surface is the same as that of the first transmission surface, based on the same center, the position of the center of the second blind hole is the same as that of the center of the first blind hole. Taking the center of the second transmission surface as a reference, the position of the center of the second blind hole is measured. Compare the position of the center of the optical lens and the position of the center of the second blind hole. Correct the first mold according to the comparison result.

Description

Calibration method of optical fiber coupling connector forming mold

technical field

The invention relates to the field of molding of optical fiber coupling connectors, in particular to a method for correcting molding dies of optical fiber coupling connectors.

Background technique

At present, the use of optical signals to transmit data is gradually applied to the USB field of personal computers, and the specific form is reflected in the use of optical fiber coupling connectors. A fiber-coupled connector usually includes an optical fiber, a blind hole matching the optical fiber, and an optical lens corresponding to the optical fiber. When assembling, the optical fiber is inserted into the blind hole, and the optical fiber is fixed at a preferred position in front of the optical lens by pointing an ultraviolet (Ultraviolet, UV) curable glue.

However, when molding optical fiber coupling connectors, due to deviations in the position of the blind hole mold insert or the design of the molding cavity corresponding to the optical lens mold insert, there will be a deviation between the molded optical lens and the blind hole. The concentricity is not high, so the concentricity between the optical fiber and the optical lens contained in the blind hole is not high, that is, the optical fiber cannot be fixed in a better position in front of the optical lens, which will affect the optical signal transmission of the fiber coupling connector accuracy and efficiency.

Contents of the invention

In view of this, it is necessary to provide a method for correcting the optical fiber coupling connector molding die, which is used to correct the optical fiber coupling connector molding die so that the corrected optical fiber coupling connector molding die can be formed between the optical lens and the blind hole. The optical fiber coupling connector with high concentricity enables the optical fiber to be fixed in a better position in front of the optical lens, thereby ensuring the accuracy and efficiency of the optical signal transmission of the optical fiber coupling connector.

A method for calibrating a molding die of an optical fiber coupling connector, comprising the following steps: providing a first molding die of an optical fiber coupling connector, the first molding die of an optical fiber coupling connector includes an aspheric surface molding core, and the aspheric surface The forming mold core includes a surface provided with a plurality of forming cavities. A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and corresponding to the plurality of first blind holes. Taking the center of the first transmission surface as a reference, the position of the center of the optical lens is measured. A second fiber optic coupling connector molding die is provided. A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole. Taking the center of the second transmission surface as a reference, the position of the center of the second blind hole is measured. comparing the position of the center of the optical lens with the position of the center of the second blind hole. According to the result of the comparison, the position of the molding cavity on the surface is adjusted so that the position of the center of the optical lens molded by the first optical fiber coupling connector molding mold is the same as that of the corresponding second blind molded by the second optical fiber coupling connector molding mold. The deviation of the position of the center of the hole is within a predetermined range.

A correction method for a molding die of an optical fiber coupling connector, which includes: providing a first molding die for an optical fiber coupling connector, the first molding die for an optical fiber coupling connector includes an aspherical molding core, and the aspheric molding die The kernel includes a surface on which multiple molding cavities are opened. A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and respectively corresponding to the plurality of first blind holes. Taking the center of the first transmission surface as a reference, measure the position of the center of the optical lens, the position of the center of the optical lens is the center of the optical lens in the Cartesian coordinate system established with the center of the first transmission surface as the origin coordinates in . Provide a plane forming mold core, the position of the plane forming mold core relative to the aspheric surface forming mold core is a plane, and there are no multiple molding cavities on the plane, the plane having the same center as the surface; replacing the aspherical molding die insert in the first optical fiber coupling connector molding die with the planar molding die insert to obtain a second optical fiber coupling connector molding die, the The first optical fiber coupling connector molding die and the second optical fiber coupling connector molding die include the same blind hole core insert. A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole, and the position of the center of the first blind hole is established with the center of the first transmission surface as the origin of the center of the first blind hole The coordinates in the rectangular coordinate system, the position of the center of the second blind hole are the coordinates of the center of the second blind hole in the rectangular coordinate system established with the center of the second transmission surface as the origin. Taking the center of the second transmission surface as a reference, the position of the center of the second blind hole is measured. comparing the position of the center of the optical lens with the position of the center of the second blind hole. According to the result of the comparison, adjust the position of the blind hole mold inserter in the first optical fiber coupling connector forming mold so that the center position of the optical lens molded by the first optical fiber coupling connector forming mold is the same as that of the second optical fiber coupling connector The deviation of the centers of the corresponding second blind holes formed by the forming die is within a predetermined range.

A correction method for a molding die of an optical fiber coupling connector, which includes: providing a first molding die for an optical fiber coupling connector, the first molding die for an optical fiber coupling connector includes an aspherical molding core, and the aspheric molding die The kernel includes a surface on which multiple molding cavities are opened. A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and respectively corresponding to the plurality of first blind holes. Taking the center of the first transmission surface as a reference, measure the position of the center of the optical lens, the position of the center of the optical lens is the center of the optical lens in the Cartesian coordinate system established with the center of the first transmission surface as the origin coordinates in . Provide a plane forming mold core, the position of the plane forming mold core relative to the aspheric surface forming mold core is a plane, and there are no multiple molding cavities on the plane, the plane having the same center as the surface; replacing the aspherical molding die insert in the first optical fiber coupling connector molding die with the planar molding die insert to obtain a second optical fiber coupling connector molding die, the The first optical fiber coupling connector molding die and the second optical fiber coupling connector molding die include the same blind hole core insert. A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole, and the position of the center of the first blind hole is established with the center of the first transmission surface as the origin of the center of the first blind hole The coordinates in the rectangular coordinate system, the position of the center of the second blind hole are the coordinates of the center of the second blind hole in the rectangular coordinate system established with the center of the second transmission surface as the origin. Taking the center of the second transmission surface as a reference, the position of the center of the second blind hole is measured. comparing the position of the center of the optical lens with the position of the center of the second blind hole. According to the result of the comparison, the position of the molding cavity on the surface and the position of the blind hole mold core in the first optical fiber coupling connector molding mold are simultaneously adjusted so that the center of the optical lens molded by the first optical fiber coupling connector molding mold The position of the deviation from the center of the corresponding second blind hole molded by the second optical fiber coupling connector molding die is within a predetermined range.

Compared with the prior art, the calibration method of the optical fiber coupling connector forming mold uses the same center as a reference to measure and compare the position of the center of the optical lens with the position of the center of the second blind hole, and then according to the comparison result Correct the molding die of the first optical fiber coupling connector so that the corrected first optical fiber coupling connector molding die can form a fiber coupling connector with a higher concentricity between the optical lens and the first blind hole, so that the optical fiber can be fixed The optimal position in front of the optical lens ensures the accuracy and efficiency of the optical signal transmission of the fiber-optic coupling connector.

Description of drawings

Fig. 1 is a flow chart of the method for correcting the forming mold of the optical fiber coupling connector provided by the present invention.

Fig. 2 is a schematic perspective view of the first optical fiber coupling connector provided by the present invention.

FIG. 3 is a schematic diagram of measuring the position of the optical lens of the first optical fiber coupling connector in FIG. 2 .

Fig. 4 is an aspheric molding core insert when molding the first optical fiber coupling connector in Fig. 2 .

Fig. 5 is a schematic perspective view of a second optical fiber coupling connector provided by the present invention.

FIG. 6 is a schematic diagram of measuring the position of the blind hole of the second optical fiber coupling connector in FIG. 5 .

Fig. 7 is a planar molding core insert when molding the second optical fiber coupling connector in Fig. 5 .

Description of main component symbols

Aspherical molding die insert 10

Surface 12

Forming cavity 14

The first fiber-coupled connector 20

The first transparent body 22

The first transmission surface 222

The first blind hole 24

Optical lens 26

Second Fiber-Coupled Connector 40

The second transparent body 42

The second transmission surface 422

Second blind hole 44

Plane forming mold insert 30

Plane 32

Detailed ways

The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 , which is a flow chart of the method for calibrating the forming mold of the optical fiber coupling connector provided by the present invention. The method for correcting the forming mold of the optical fiber coupling connector includes the following steps:

S100: Provide a first optical fiber coupling connector forming mold (not shown). Please refer to FIG. 4 , the molding mold for the first optical fiber coupling connector includes an aspherical molding core insert 10 and four blind hole core inserts (not shown). The aspherical molding core insert 10 includes a surface 12 on which four molding cavities 14 are opened. The aspherical forming mold core 10 is installed in the first optical fiber coupling connector forming mold to form the optical lens 26 corresponding to the forming cavity 14 (shown in FIG. 2 ). The four blind hole die inserts are installed in the first optical fiber coupling connector forming mold to form the first blind holes 24 corresponding to the blind hole die inserts (shown in FIG. 2 ).

S102: Mold a first optical fiber coupling connector 20 (shown in FIG. 2 ) by using the first optical fiber coupling connector forming mold. Please refer to FIG. 2 and FIG. 4 together. The first optical fiber coupling connector 20 includes a first transparent body 22, four first blind holes 24 corresponding to the core of the blind hole mold, and four corresponding to the molding cavity 14. The optical lens 26. The first transparent body 22 includes a first transmission surface 222 . The optical lens 26 is located on the first transmission surface 222 . The first blind hole 24 is defined in the first transparent body 22 and corresponds to the optical lens 26 one by one.

S104: Taking the center of the first transmission surface 222 as a reference, measure the position of the center of the optical lens 26 . Please refer to FIG. 3 for details. A Cartesian coordinate system is established with the center O of the first transmission surface 222 as the origin (0,0). After determining the center of each optical lens 26, measure the center of each optical lens 26 with a measuring tool The coordinates (X,Y) of the center in this Cartesian coordinate system.

S106: Provide a second optical fiber coupling connector forming mold (not shown in the figure). Providing a second fiber optic coupling connector molding tool includes the steps of:

a. Provide a plane molding core insert 30 (shown in FIG. 7 ). Please refer to Fig. 4 and Fig. 7 together, the position corresponding to the surface 12 of the aspheric forming die insert 10 relative to the aspherical forming die insert 30 is a plane 32 , and the plane 32 does not open a molding cavity, and the plane 32 has the same center as the surface 12 .

b. Replace the aspheric molding insert 10 in the first optical fiber coupling connector molding die with the planar molding insert 30 to obtain the second optical fiber coupling connector molding die (not shown). Since only the aspherical molding core insert 10 in the first optical fiber coupling connector molding die is replaced with the plane forming die core insert 30, the four blind hole die cores in the second optical fiber coupling connector molding die The structures of the inserts (not shown in the figure) and the inserts of the four blind hole mold cores in the first optical fiber coupling connector molding mold and the positional relationship relative to the entire mold are exactly the same.

S108: Mold a second optical fiber coupling connector 40 (shown in FIG. 5 ) by using the second optical fiber coupling connector forming mold. Please refer to FIG. 5 , the second optical fiber coupling connector 40 includes a second transparent body 42 having a second transmission surface 422 , and a plurality of second blind holes 44 defined in the second transparent body 42 . The second fiber coupling connector 40 does not include an optical lens on the second transmission surface 422 . The second transmission surface 422 has the same center as the first transmission surface 222 . Since the structures of the four blind hole die inserts in the second optical fiber coupling connector molding die are exactly the same as the four blind hole die inserts in the first optical fiber coupling connector molding die and their positional relationship relative to the entire mold, the first The second blind hole 44 formed by the second optical fiber coupling connector molding die is exactly the same as the first blind hole 24 formed by the first optical fiber coupling connector molding die, and the second transmission surface 422 is the same as the first transmission surface 422. Based on the same center of the surface 222 , the position of the center of the second blind hole 44 is also the same as that of the center of the first blind hole 24 .

S110: Taking the center of the second transmission surface 422 as a reference, measure the position of the center of the second blind hole 44 to indirectly obtain the position of the center of the first blind hole 24 . Please refer to FIG. 6 for details. A Cartesian coordinate system is also established with the center O of the second transmission surface 422 as the origin (0,0). The coordinates (x, y) of the center of the second blind hole 44 in the rectangular coordinate system are measured, that is, the position of the center of the first blind hole 24 is also (x, y).

S112 : Compare the position (X, Y) of the center of the optical lens 26 with the position (x, y) of the center of the second blind hole 44 . Since the second transmission surface 422 has the same center as the first transmission surface 222, the center of the optical lens 26 is in the same coordinate system as the center of the second blind hole 44, and the absolute value method can be directly used to obtain the The difference between the position of the center of the optical lens 26 and the position of the center of the second blind hole 44 is X ₀ =|Xx|, Y ₀ =|Yy|.

S114: Calibrate the forming mold of the first optical fiber coupling connector according to the comparison result. Wherein, the correction method has three ways, the first way is: adjust the position of the molding cavity 14 on the surface 12 to make the position of the center of the optical lens 26 molded by the first optical fiber coupling connector molding mold (X, Y) The deviation from the position (x, y) of the center of the corresponding second blind hole 44 molded by the second optical fiber coupling connector molding die is within a predetermined range. The second approach is: adjust the position of the blind hole mold inserter in the first optical fiber coupling connector forming mold so that the center position (X, Y) of the optical lens 26 formed by the first optical fiber coupling connector forming mold The deviation from the position (x, y) of the center of the corresponding second blind hole 44 molded by the second optical fiber coupling connector molding die is within a predetermined range. The third approach is a combination of the above two approaches, that is, simultaneously adjust the position of the molding cavity 14 on the surface 12 and the position of the blind hole mold insert in the first optical fiber coupling connector molding mold to make the first optical fiber coupling The deviation between the position (X, Y) of the center of the optical lens 26 formed by the connector molding die and the position (x, y) of the center of the corresponding second blind hole 44 formed by the second optical fiber coupling connector molding die is within within the predetermined range.

The correcting method of the optical fiber coupling connector molding die of the present invention uses the same center as the measurement reference, measures and compares the position (X, Y) of the center of the optical lens 26 with the corresponding second blind hole 44 (the first blind hole 24 ) center position (x, y), and then adjust the position of the molding cavity 14 on the surface 12 in the first optical fiber coupling connector molding mold according to the comparison result or adjust the blind hole mold core in the first optical fiber coupling connection Then adjust the position of the molding cavity 14 on the surface 12 and the position of the blind hole mold core in the first optical fiber coupling connector molding mold at the same time to correct the first optical fiber coupling connector molding mold , so that the corrected first optical fiber coupling connector molding die can form a fiber coupling connector with a higher concentricity between the optical lens 26 and the first blind hole 24, so that the optical fiber can be fixed at a better position in front of the optical lens , so as to ensure the accuracy and efficiency of the optical signal transmission of the fiber-optic coupling connector.

In addition, the correcting method of the forming mold of the optical fiber coupling connector of the present invention may also be to first form the second optical fiber coupling connector not including the optical lens, and then to form the first optical fiber coupling connector including the optical lens. Wherein, the first optical fiber coupling connector forming mold is obtained by replacing the planar forming core inserts in the second optical fiber coupling connector forming molds with aspherical forming core inserts. Correspondingly, using the same center as a reference, measure and compare the position of the center of the second blind hole in the second fiber optic coupling connector and the position of the center of the optical lens in the first fiber coupling connector, and finally correct the first hole according to the comparison result A molding die for an optical fiber coupling connector.

It can be understood that those skilled in the art can make various other corresponding changes and modifications according to the technical concept of the present invention, and all these changes and modifications should belong to the protection scope of the claims of the present invention.

Claims (6)

1. A calibration method for an optical fiber coupling connector molding die, comprising: A first optical fiber coupling connector molding die is provided, the first optical fiber coupling connector molding die includes an aspherical molding die insert, and the aspheric molding die insert includes a surface provided with a plurality of molding cavities; A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and respectively corresponding to the plurality of first blind holes; taking the center of the first transmission surface as a reference, measuring the position of the center of the optical lens; providing a second optical fiber coupling connector molding die; A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole; taking the center of the second transmission surface as a reference, measuring the position of the center of the second blind hole; comparing the position of the center of the optical lens with the position of the center of the second blind hole; and According to the result of the comparison, the position of the molding cavity on the surface is adjusted so that the position of the center of the optical lens molded by the first optical fiber coupling connector molding mold is the same as that of the corresponding second blind molded by the second optical fiber coupling connector molding mold. The deviation of the position of the center of the hole is within a predetermined range. 2. The calibration method of the optical fiber coupling connector molding die as claimed in claim 1, wherein the step of providing the second optical fiber coupling connector molding die is realized by the following steps: providing a plane molding die core, Relative to the aspherical forming die insert, the position of the planar forming die core is a plane corresponding to the surface, and there are no multiple molding cavities on the plane, and the plane has the same center as the surface; The aspherical molding insert in the first optical fiber coupling connector molding die is replaced with the planar molding insert to obtain the second optical fiber coupling connector molding die. 3. The correcting method of optical fiber coupling connector molding die as claimed in claim 2, is characterized in that, the position of the center of this optical lens is that the center of this optical lens is at the right angle that takes the center of this first transmission surface as the origin to establish Coordinates in the coordinate system, the position of the center of the first blind hole is the coordinate of the center of the first blind hole in the rectangular coordinate system established with the center of the first transmission surface as the origin. 4. The calibration method of the optical fiber coupling connector molding die as claimed in claim 3, wherein the position of the center of the second blind hole is that the center of the second blind hole is at the center of the second transmission surface Coordinates in the Cartesian coordinate system established by the origin. 5. A calibration method for an optical fiber coupling connector molding die, comprising: A first optical fiber coupling connector molding die is provided, the first optical fiber coupling connector molding die includes an aspherical molding die insert, and the aspheric molding die insert includes a surface provided with a plurality of molding cavities; A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and respectively corresponding to the plurality of first blind holes; Taking the center of the first transmission surface as a reference, measure the position of the center of the optical lens, the position of the center of the optical lens is the center of the optical lens in the Cartesian coordinate system established with the center of the first transmission surface as the origin coordinates in Provide a plane forming mold core, the position of the plane forming mold core relative to the aspheric surface forming mold core is a plane, and there are no multiple molding cavities on the plane, the plane having the same center as the surface; replacing the aspherical molding die insert in the first optical fiber coupling connector molding die with the planar molding die insert to obtain a second optical fiber coupling connector molding die, the The first optical fiber coupling connector forming mold and the second optical fiber coupling connector forming mold include the same blind hole core insert; A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole, and the position of the center of the first blind hole is established with the center of the first transmission surface as the origin of the center of the first blind hole The coordinates in the Cartesian coordinate system, the position of the center of the second blind hole is the coordinates of the center of the second blind hole in the Cartesian coordinate system established with the center of the second transmission surface as the origin; taking the center of the second transmission surface as a reference, measuring the position of the center of the second blind hole; comparing the position of the center of the optical lens with the position of the center of the second blind hole; and According to the result of the comparison, adjust the position of the blind hole mold inserter in the first optical fiber coupling connector forming mold so that the center position of the optical lens molded by the first optical fiber coupling connector forming mold is the same as that of the second optical fiber coupling connector The deviation of the centers of the corresponding second blind holes formed by the forming die is within a predetermined range. 6. A calibration method for an optical fiber coupling connector molding die, comprising: A first optical fiber coupling connector molding die is provided, the first optical fiber coupling connector molding die includes an aspherical molding die insert, and the aspheric molding die insert includes a surface provided with a plurality of molding cavities; A first optical fiber coupling connector is formed by using the first optical fiber coupling connector molding die, and the first optical fiber coupling connector includes a first transparent body with a first transmission surface, a plurality of first transparent bodies set in the first transparent body A blind hole, and a plurality of optical lenses located on the first transmission surface and respectively corresponding to the plurality of first blind holes; Taking the center of the first transmission surface as a reference, measure the position of the center of the optical lens, the position of the center of the optical lens is the center of the optical lens in the Cartesian coordinate system established with the center of the first transmission surface as the origin coordinates in Provide a plane forming mold core, the position of the plane forming mold core relative to the aspheric surface forming mold core is a plane, and there are no multiple molding cavities on the plane, the plane having the same center as the surface; replacing the aspherical molding die insert in the first optical fiber coupling connector molding die with the planar molding die insert to obtain a second optical fiber coupling connector molding die, the The first optical fiber coupling connector forming mold and the second optical fiber coupling connector forming mold include the same blind hole core insert; A second optical fiber coupling connector is molded using the second optical fiber coupling connector molding die, and the second optical fiber coupling connector includes a second transparent body with a second transmission surface, a plurality of first transparent bodies set in the second transparent body Two blind holes, the second optical fiber coupling connector does not include an optical lens on the second transmission surface, the second transmission surface has the same center as the first transmission surface, and based on the same center, the The position of the center of the second blind hole is the same as the position of the center of the first blind hole, and the position of the center of the first blind hole is established with the center of the first transmission surface as the origin of the center of the first blind hole The coordinates in the Cartesian coordinate system, the position of the center of the second blind hole is the coordinates of the center of the second blind hole in the Cartesian coordinate system established with the center of the second transmission surface as the origin; taking the center of the second transmission surface as a reference, measuring the position of the center of the second blind hole; comparing the position of the center of the optical lens with the position of the center of the second blind hole; and According to the result of the comparison, the position of the molding cavity on the surface and the position of the blind hole mold core in the first optical fiber coupling connector molding mold are simultaneously adjusted so that the center of the optical lens molded by the first optical fiber coupling connector molding mold The position of the deviation from the center of the corresponding second blind hole molded by the second optical fiber coupling connector molding die is within a predetermined range.

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