CN108627926B

CN108627926B - Method for combining photoelectric coupling lens

Info

Publication number: CN108627926B
Application number: CN201810366922.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Longyan Diang Photoelectricity Co ltd
Current assignee: Longyan Diang Photoelectricity Co ltd
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2021-06-15
Anticipated expiration: 2033-05-14
Also published as: CN104155728B; CN104155728A; CN108627926A

Abstract

A method for combining photoelectric coupling lens, make up the direct-emitting lens die set of the non-switching light path through separable front lens unit and rear lens unit, set up several optical axes first lens parallel to each other in the said front lens unit, couple said first lens with optical fiber light, set up several optical axes second lens parallel to each other in the said rear lens unit, match the front locating structure set up in the said front lens unit with the rear locating structure set up in the said rear lens unit, make the optical axis of the said first lens and optical axis of the said second lens coincide correspondingly; the light emitted by a light-emitting element in the photoelectric element enters the rear lens unit and the front lens unit through the second lens, and is emitted into an optical fiber from the first lens; the signal transmitted by the optical fiber passes through the first lens and the second lens and is received by photoelectric detection in the photoelectric element.

Description

Method for combining photoelectric coupling lens

The application is a divisional application of a patent with the application number of 2013101762050 and the application date of 2013, 05 and 14, and the name of the invention is 'photoelectric coupling lens module'.

Technical Field

The invention relates to a photoelectric coupling lens module.

Background

Among the photoelectric conversion modules, a photoelectric coupling lens module generally used includes a reflection type lens module that rotates an optical path by 90 degrees by using a reflection principle and a direct type lens module that transmits and receives an optical signal without turning the optical path.

The reflective lens module has a smaller height than the direct lens module, and has the disadvantage of difficult manufacture; the direct-emitting lens module has the advantage of being easier to manufacture, but has a larger height than the reflective lens module because the optical path is not turned.

Disclosure of Invention

Accordingly, there is a need for a photoelectric coupling lens module with reduced manufacturing difficulty.

A photoelectric coupling lens module comprises a front lens unit and a rear lens unit which can be separated, wherein the front lens unit is provided with a plurality of first lenses with optical axes parallel to each other, the first lenses are used for being optically coupled with optical fibers, the rear lens unit is provided with a plurality of second lenses with optical axes parallel to each other, the first lenses and the second lenses are in one-to-one correspondence, and the second lenses are used for being coupled with photoelectric elements so that optical signals can be transmitted between the optical fibers and the photoelectric elements.

Compared with the prior art, the photoelectric coupling lens module provided by the embodiment of the invention is formed by combining the front lens unit and the rear lens unit, and the front lens unit and the rear lens unit are independently manufactured and used in a combined way, so that the manufacturing difficulty of the photoelectric coupling lens module is reduced.

Drawings

Fig. 1 is a combination diagram of an optical coupling lens module according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of fig. 1.

Fig. 3 is an exploded view from another angle of fig. 1.

Fig. 4 is a schematic cross-sectional view of IV-IV in fig. 1.

FIG. 5 is a schematic view of another combination of the optical coupling lens module of FIG. 1.

Fig. 6 is an exploded schematic view of fig. 5.

Fig. 7 is a schematic cross-sectional view of VI-VI in fig. 5.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

Referring to fig. 1, 2, 3 and 4, an assembly structure of the photocoupler lens module 10 includes a front lens unit 11, a reflective lens unit 12 and a rear lens unit 13, which are separable, and the front lens unit 11, the reflective lens unit 12 and the rear lens unit 13 form a reflective lens module of a rotating light path.

The front lens unit 11 is used to couple with an optical fiber, the reflective lens unit 12 is used to reflect light incident thereon, and the rear lens unit 13 is used to couple with optoelectronic devices (e.g., a light emitting device and a photodetector), such that the photocoupling lens module 10 realizes transmission of optical signals between the optoelectronic devices and the optical fiber.

The front lens unit 11 has a plurality of first lenses 110 and two front positioning structures 111, the front lens unit 11 has a first surface 11a and a second surface 11b opposite to each other, wherein the first lenses 110 are disposed on the first surface 11a for optically coupling with the optical fibers, optical axes of the first lenses 110 are parallel to each other, and the front positioning structures 111 are disposed on the second surface 11b for positioning the front lens unit 11 and the reflective lens unit 12. The front locating feature 111 may be a post or a hole.

The reflection lens unit 12 has a third surface 12a, a fourth surface 12b, and a fifth surface 12c, the third surface 12a perpendicularly intersecting the fourth surface 12b and the fifth surface 12c, respectively, and the fourth surface 12b and the fifth surface 12c are parallel. The fourth surface 12b is recessed toward the fifth surface 12c to form a reflective surface 120, an included angle between the reflective surface 120 and the fourth surface 12b is 45 degrees, the third surface 12a has two first positioning structures 121, the fifth surface 12c has two second positioning structures 122, the first positioning structures 121 correspond to the front positioning structures 111 on the front lens unit 11, and the second positioning structures 122 are used for positioning the reflective lens unit 12 and the rear lens unit 13. The first positioning structure 121 may be a cylinder or a hole, and likewise, the second positioning structure 122 may be a cylinder or a hole.

The rear lens unit 13 has a sixth surface 13a and a seventh surface 13b opposite to each other, wherein the sixth surface 13a has two rear positioning structures 131, the seventh surface 13b has a plurality of second lenses 130, the second lenses 130 are used for optically coupling with the optoelectronic devices, the optical axes of the second lenses 130 are parallel to each other and correspond to the first lenses 110 one by one, and the optical axes of the first lenses 110 and the second lenses 130 corresponding to each other intersect perpendicularly on the reflection surface 120. The rear positioning structure 131 cooperates with the second positioning structure 122 to position the rear lens unit 13 and the reflection lens unit 12, and the rear positioning structure 131 may be a cylinder or a hole.

Light emitted by a light emitting element in the photoelectric element enters the rear lens unit 13 through the second lens 130, then enters the reflecting surface 120 of the reflecting lens unit 12, is reflected by the reflecting surface 120 to enter the front lens unit 11, exits from the first lens 110 and enters the optical fiber for transmission; the light emitted from the optical fiber enters the front lens unit 11 through the first lens 110, then enters the reflecting surface 120 of the reflecting lens unit 12, is reflected by the reflecting surface 120 into the rear lens unit 13, and is received by the photodetector in the photoelectric element after being emitted from the second lens 130.

As shown in fig. 5, 6 and 7, which are another combination structure of the optical coupling lens module 10, the front lens unit 11 and the rear lens unit 13 can be combined into a direct-type lens module without converting the optical path.

The front positioning structure 111 of the front lens unit 11 and the rear positioning structure 131 of the rear lens unit 13 cooperate such that the optical axis of the first lens 110 and the optical axis of the second lens 130 correspondingly coincide. The light emitted by the light emitting element in the photoelectric element enters the rear lens unit 13 and the front lens unit 11 through the second lens 130, and then is emitted from the first lens 110 to enter the optical fiber; the signal transmitted by the optical fiber passes through the first lens 110 and the second lens 130 and is received by the photoelectric detection in the photoelectric element.

The photo-coupling lens module 10 is composed of a front lens unit 11, a reflection lens unit 12, and a rear lens unit 13, which are independent. The front lens unit 11 and the rear lens unit 13 may be combined into a direct type lens module in which the optical path is not converted, and the front lens unit 11, the reflection lens unit 12, and the rear lens unit 13 may be combined together into a reflection type lens module in which the optical path is converted.

The front lens unit 11, the reflection lens unit 12, and the rear lens unit 13 are independently manufactured and used in combination, thereby reducing the difficulty in manufacturing the photoelectric coupling lens module 10, and are combined according to different functions, so that the front lens unit 11, the reflection lens unit 12, and the rear lens unit 13 are used with flexibility.

It is to be understood that other variations and modifications within the spirit of the invention may be devised by those skilled in the art without departing from the technical effects of the invention. Such variations are intended to be included within the scope of the invention as claimed.

Claims

1. The utility model provides a photoelectric coupling lens module which characterized in that: the optical fiber lens comprises a front lens unit and a rear lens unit which are separable, wherein the front lens unit is provided with a plurality of first lenses with optical axes parallel to each other, the first lenses are used for being optically coupled with optical fibers, the rear lens unit is provided with a plurality of second lenses with optical axes parallel to each other, the first lenses and the second lenses are in one-to-one correspondence, the second lenses are used for being coupled with photoelectric elements so that optical signals can be transmitted between the optical fibers and the photoelectric elements, and the front lens unit and the rear lens unit form a direct-emitting lens module; the optical coupling lens module further comprises a reflecting lens unit which is separable from the front lens unit and the rear lens unit, the reflecting lens unit is provided with a reflecting surface, the optical axis of each group of the first lens and the second lens which correspond to each other is perpendicularly intersected on the reflecting surface, and the front lens unit, the reflecting lens unit and the rear lens unit form a reflecting lens module;

the front lens unit is provided with a plurality of first lenses and two front positioning structures, the front lens unit is provided with a first surface and a second surface which are opposite, wherein the first lenses are positioned on the first surface and used for optically coupling with the optical fibers, the optical axes of the first lenses are parallel to each other, and the front positioning structures are positioned on the second surface and used for positioning the front lens unit and the reflecting lens unit;

the reflection lens unit is provided with a third surface, a fourth surface and a fifth surface, the third surface is respectively and vertically intersected with the fourth surface and the fifth surface, the fourth surface is parallel to the fifth surface, the fourth surface is sunken towards the fifth surface to form a reflection surface, an included angle between the reflection surface and the fourth surface is 45 degrees, the third surface is provided with two first positioning structures, the fifth surface is provided with two second positioning structures, the first positioning structures correspond to the front positioning structures on the front lens unit, and the second positioning structures are used for positioning the reflection lens unit and the rear lens unit;

the rear lens unit is provided with a sixth surface and a seventh surface which are opposite, wherein the sixth surface is provided with two rear positioning structures, the seventh surface is provided with a plurality of second lenses which are used for being optically coupled with the photoelectric element, the optical axes of the second lenses are parallel to each other and correspond to the first lenses one by one, the optical axes of the first lenses and the second lenses which correspond to each other are vertically intersected on the reflecting surface, and the rear positioning structures are matched with the second positioning structures so as to position the rear lens unit and the reflecting lens unit.

2. The photo-coupled lens module as claimed in claim 1, wherein the front positioning structure is a positioning hole and the rear positioning structure is a positioning post.

3. The photo-coupled lens module as claimed in claim 1, wherein the front positioning structure is a positioning post and the rear positioning structure is a positioning hole.

4. The photo-coupling lens module as claimed in claim 1, wherein the front lens unit has a front positioning structure, the rear lens unit has a rear positioning structure, and the reflection lens unit has a first positioning structure and a second positioning structure, the first positioning structure and the second positioning structure being respectively matched with the front positioning structure and the rear positioning structure.

5. The photo-coupled lens module as claimed in claim 4, wherein the front positioning structure is a positioning hole, the first positioning structure is a positioning post, the second positioning structure is a positioning hole, and the rear positioning structure is a positioning post.

6. The photo-coupled lens module as claimed in claim 4, wherein the front positioning structure is a positioning post, the first positioning structure is a positioning hole, the second positioning structure is a positioning hole, and the rear positioning structure is a positioning post.