CN217587688U

CN217587688U - Optical device and system for optical module

Info

Publication number: CN217587688U
Application number: CN202221315853.0U
Authority: CN
Inventors: 方文银; 彭开盛
Original assignee: Hefei Zijun Guangheng Technology Co ltd
Current assignee: Hefei Zijun Guangheng Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-10-14
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses an optical device and system for optical module belongs to the optical communication technology field, including beam splitter and lens, lens include first transmission face, second transmission face, plane of reflection and with the recess that beam splitter matches, the recess is located the second transmission face with between the plane of reflection, the beam splitter set up in the recess, first transmission face can supply the light warp that the laser instrument chip transmitted the plane of reflection reflects extremely the beam splitter, the beam splitter is right light carries out the beam splitting, and partly light jets into the second transmission face and warp the optic fibre is jetted into to the second transmission face, and another part light jets into the detector. The utility model discloses reach compact structure, the less technological effect of occupation space.

Description

Optical device and system for optical module

Technical Field

The utility model belongs to the technical field of optical communication, in particular to an optical device and system for optical module.

Background

Optical communication is a communication method using light waves as carriers. The optical module plays an important role in the optical fiber communication process, and along with the rapid development of the optical communication technology, high-power devices are increasingly used in communication equipment for ensuring that data can be transmitted at a long distance and at a high speed.

Currently, in the existing optical communication technology, the central axes of the laser chip, the collimating lens and the beam splitter are generally arranged on the same axis. Convergent lens sets up on the light-emitting direction of the transmission light of beam splitter, and convergent lens sets up between beam splitter and first fiber adapter to distance between first fiber adapter and the convergent lens is convergent lens's focus, needs solitary fixed knot structure to fix reflection prism and beam splitter respectively, to the fixed required extra spare part of reflection prism and beam splitter, can make holistic fixed knot construct complicacy, need occupy a large amount of module space.

In summary, the conventional optical communication technology has the technical problems of complex structure and large occupied space.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is that the structure is complicated, the great technical problem of occupation space.

In order to solve the above technical problem, the utility model provides an optical device for optical module, optical device includes: beam splitter and lens, lens include first transmission face, second transmission face, plane of reflection and with beam splitter matched with's recess, the recess is located the second transmission face with between the plane of reflection, the beam splitter set up in the recess, the light that first transmission face can supply the laser instrument chip to launch passes through the plane of reflection extremely the beam splitter, the beam splitter is right light splits, and partly light is penetrated into the second transmission face and warp the optic fibre is penetrated into to the second transmission face, and another part light is penetrated into the detector.

Further, the optical device further includes: a PCB circuit board for mounting the laser chip and the detector.

Further, the detector is located between the PCB and the beam splitter.

Further, the included angle between the reflecting surface and the first transmission surface is 45 degrees.

Further, the second transmission plane is perpendicular to the first transmission plane.

Further, the included angle between the beam splitting surface of the beam splitter and the first transmission surface is 45 degrees.

Further, the beam splitting surface of the beam splitter is perpendicular to the reflecting surface.

Further, the first transmission surface is located between the laser chip and the reflection surface.

According to the utility model discloses a still another aspect, the utility model discloses still provide a system for optical module, including laser instrument chip, detector and optic fibre, still include if be used for the optical device of optical module, the light that laser instrument chip transmitted jets into behind the first transmission face through the plane of reflection extremely the beam splitter, the beam splitter is right light splits the beam, and partly light jets into the second transmission face and warp the second transmission face jets into optic fibre, another part light jets into the detector.

Has the advantages that:

the utility model provides an optical device for optical module sets up in the recess of lens through the beam splitter, and the recess is located between second transmission face and the plane of reflection in the lens, and first transmission face can supply the light that the laser instrument chip transmitted to reflect extremely through the plane of reflection the beam splitter, the beam splitter is right light splits the beam, and partly light jets into the second transmission face of lens and process the optic fibre is jetted into to the second transmission face, and another part light jets into the detector. Therefore, the beam splitter is fixed through the groove of the lens, the whole structure can be simplified, the structure is compact, and the occupied module space is reduced. Thereby achieving the technical effects of compact structure and small occupied space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of an optical device for an optical module according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a beam splitter in an optical device for an optical module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a lens in an optical device for an optical module according to an embodiment of the present invention.

Detailed Description

The utility model discloses an optical device for optical module sets up in the recess 24 of lens 2 through beam splitter 1, and recess 24 is located between second transmission face 22 and plane of reflection 23 in lens 2, and first transmission face 21 can supply the light of laser chip 3 transmission to reflect extremely through plane of reflection 23 beam splitter 1, beam splitter 1 is right light splits, and partly light jets into lens 2's second transmission face 22 and process fibre optic fibre 4 is jetted into to second transmission face 22, and another part light jets into detector 5. Thus, the beam splitter 1 is fixed through the groove 24 of the lens 2, the whole structure can be simplified, the structure is compact, and the occupied module space is reduced. Thereby achieving the technical effects of compact structure and small occupied space.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art belong to the protection scope of the present invention; the "and/or" keyword involved in this implementation represents sum or two cases, in other words, the a and/or B mentioned in the embodiment of the present invention represents two cases of a and B, A or B, and describes three states where a and B exist, such as a and/or B, representing: only A does not include B; only B does not include A; including A and B.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments. Spatially relative terms, such as "below," "above," and the like, may be used herein to facilitate describing one element or feature's relationship to another element or feature. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "lower" would then be oriented "upper" other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Also, in embodiments of the invention, when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the present invention.

Example one

Please refer to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of an optical device for an optical module according to an embodiment of the present invention, fig. 2 is a schematic diagram of a beam splitter 1 in an optical device for an optical module according to an embodiment of the present invention, and fig. 3 is a schematic diagram of a lens 2 in an optical device for an optical module according to an embodiment of the present invention. The embodiment of the utility model provides a pair of optical device for optical module, including beam splitter 1 and lens 2, now carry out following detailed description to beam splitter 1 and lens 2 respectively:

for the beam splitter 1 and lens 2:

lens 2 include first transmission face 21, second transmission face 22, plane of reflection 23 and with 1 assorted recess 24 of beam splitter, recess 24 is located second transmission face 22 with between the plane of reflection 23, beam splitter 1 set up in recess 24, first transmission face 21 can supply the light process that laser instrument chip 3 launched reflection extremely plane of reflection 23 beam splitter 1, beam splitter 1 is right light carries out the beam splitting, and partly light jets into second transmission face 22 and warp fiber 4 is jetted into to second transmission face 22, and another part light jets into detector 5. Wherein the detector 5 is located between the PCB 6 and the beam splitter 1. The angle between the reflecting surface 23 and the first transmitting surface 21 is 45 °. The second transmission surface 22 is perpendicular to the first transmission surface 21. The included angle between the beam splitting surface of the beam splitter 1 and the first transmission surface 21 is 45 degrees. The beam splitting surface of the beam splitter 1 is perpendicular to the reflecting surface 23. The first transmission surface 21 is located between the laser chip 3 and the reflection surface 23. The embodiment of the utility model provides an optical device for optical module still includes PCB circuit board 6, PCB circuit board 6 can supply the installation laser instrument chip 3 with detector 5.

Specifically, the lens 2 may be opened by a plastic mold, the material for manufacturing the lens 2 may be PEI material, a groove 24 is reserved in the middle of the optical path of the lens 2, and a space for accommodating the beam splitter 1 is provided inside the groove 24. The beam splitter 1 can be fixed in the groove 24 by adopting light path glue, so that the reliability of assembly can be improved, the occupied external space is reduced, and a large amount of module space is saved. The beam splitter 1 can have different splitting ratios, and can be used in application scenes with different optical power requirements. Different beam splitters 1 embedded in the mold-opened plastic lens 2 can be used to control the optical power of the laser coupled to the optical fiber 4. A part of the light rays enters the second transmission surface 22 and enters the optical fiber 4 through the second transmission surface 22, which means that most of the light rays enter the optical fiber 4 through the beam splitter 1, and another part of the light rays enters the detector 5, which means that less of the light rays enter the monitoring detector 5. Thus, when the monitoring detector 5 is used for realizing monitoring detection, the attenuation of the laser chip 3 with different optical power can be adjusted.

The utility model provides an optical device for optical module sets up in the recess 24 of lens 2 through beam splitter 1, and recess 24 is located between second transmission face 22 and plane of reflection 23 in lens 2, and first transmission face 21 can supply the light of laser chip 3 transmission to reflect extremely through plane of reflection 23 beam splitter 1, beam splitter 1 is right light splits, and partly light jets into lens 2's second transmission face 22 and process fibre 4 is jetted into to second transmission face 22, and another part light jets into detector 5. Thus, the beam splitter 1 is fixed through the groove 24 of the lens 2, the whole structure can be simplified, the structure is compact, and the occupied module space is reduced. Thereby achieving the technical effects of compact structure and small occupied space.

In order to right the utility model provides a pair of a system for optical module does detailed description, above-mentioned embodiment one to one is used for the optical device of optical module to do detailed description, and based on same utility model design, this application still provides a system for optical module, sees embodiment two for the details.

Example two

The embodiment of the utility model provides a system for optical module, including laser chip 3, detector 5 and optic fibre 4, still include if be used for the optical device of optical module, the light that laser chip 3 launched jets into behind the first transmission face 21 through plane of reflection 23 reflection extremely beam splitter 1, beam splitter 1 is right light carries out the beam splitting, and partly light jets into second transmission face 22 and warp second transmission face 22 jets into optic fibre 4, another part light jets into detector 5.

The utility model provides a system for optical module sets up in the recess 24 of lens 2 through beam splitter 1, and recess 24 is located between second transmission face 22 and plane of reflection 23 in lens 2, and first transmission face 21 can supply the light that laser chip 3 launched to reflect extremely through plane of reflection 23 beam splitter 1, beam splitter 1 is right light splits, and partly light jets into lens 2's second transmission face 22 and process fibre 4 is jetted into to second transmission face 22, and another part light jets into detector 5. Thus, the beam splitter 1 is fixed through the groove 24 of the lens 2, the whole structure can be simplified, the structure is compact, and the occupied module space is reduced. Thereby achieving the technical effects of compact structure and small occupied space.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A light device for a light module, the light device comprising: beam splitter and lens, lens include first transmission face, second transmission face, plane of reflection and with beam splitter matched with's recess, the recess is located the second transmission face with between the plane of reflection, the beam splitter set up in the recess, the light that first transmission face can supply the laser instrument chip to launch passes through the plane of reflection extremely the beam splitter, the beam splitter is right light splits, and partly light is penetrated into the second transmission face and warp the optic fibre is penetrated into to the second transmission face, and another part light is penetrated into the detector.

2. The optical device for a light module as claimed in claim 1, characterized in that the optical device further comprises: a PCB circuit board for mounting the laser chip and the detector.

3. The optical device for a light module as claimed in claim 2, characterized in that: the detector is located between the PCB and the beam splitter.

4. The optical device for a light module as claimed in claim 1, characterized in that: the included angle between the reflecting surface and the first transmission surface is 45 degrees.

5. The optical device for a light module as claimed in claim 1, characterized in that:

the second transmission surface is perpendicular to the first transmission surface.

6. The optical device for a light module as claimed in claim 1, characterized in that: the included angle between the beam splitting surface of the beam splitter and the first transmission surface is 45 degrees.

7. The optical device for a light module as claimed in claim 1, characterized in that: and the light splitting surface of the beam splitter is vertical to the reflecting surface.

8. The optical device for a light module as claimed in claim 1, characterized in that: the first transmissive surface is located between the laser chip and the reflective surface.

9. A system for an optical module, comprising a laser chip, a detector and an optical fiber, and further comprising the optical device for an optical module according to any one of claims 1 to 8, wherein the light emitted from the laser chip is incident on the first transmission surface and then reflected by the reflection surface to the beam splitter, the beam splitter splits the light, a portion of the light is incident on the second transmission surface and then incident on the optical fiber through the second transmission surface, and another portion of the light is incident on the detector.