CN217385905U

CN217385905U - Lens module and optical module

Info

Publication number: CN217385905U
Application number: CN202221218138.5U
Authority: CN
Inventors: 方文银; 彭开盛
Original assignee: Tri Light Wuhan Electronics Technology Co ltd
Current assignee: Tri Light Wuhan Electronics Technology Co ltd
Priority date: 2022-05-19
Filing date: 2022-05-19
Publication date: 2022-09-06
Anticipated expiration: 2032-05-19

Abstract

The utility model relates to an optical communication technical field provides a lens module, which comprises a base bod, the base member integration has collimating lens, prism and array lens, collimating lens the prism with array lens lays along the direction of light path in proper order, be equipped with the V type groove that supplies optic fibre lock pin installation on the base member, the end that V type groove extends with collimating lens aligns. The optical module comprises the optical fiber inserting core and the lens module, wherein the optical fiber inserting core is fixed in the V-shaped groove. The utility model discloses an integrated collimating lens of base member, prism and array lens's function to integrated V type groove, the passive location of optic fibre lock pin that can be convenient is to lens module and advances light side collimating lens alignment of lens module, realizes that the collimator need not the function of coupling, reaches the purpose that production efficiency promoted and cost reduction.

Description

Lens module and optical module

Technical Field

The utility model relates to an optical communication technical field specifically is a lens module and optical module.

Background

The existing product adopts a collimator, a glass oblique block, an optical filter, an array lens, a prism, an array detector and a substrate.

The collimator in the prior art (the collimator is formed by coupling an optical fiber ferrule and a glass ball lens, and the optical fiber ferrule and the glass ball lens are fixed by a glass sleeve), a glass inclined block, an optical filter, an array lens and a prism are all made of glass or silicon materials, and are manufactured in a single cold machining mode and then assembled together, so that the production efficiency is low, the cost is high, the assembly fit tolerance is poor, and an additional high-precision chip mounter is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lens module and optical module can solve the partial defect among the prior art at least.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the utility model provides a lens module, includes the base member, the base member integration has collimating lens, prism and array lens, collimating lens prism with array lens lays in proper order along the direction of light path, be equipped with the V type groove that supplies the installation of optic fibre lock pin on the base member, the end that the V type groove extends with collimating lens aligns.

Further, the collimating lens, the prism and the array lens are all molded on the substrate in an open mold mode.

Further, the substrate is an optical plastic substrate.

Further, the light inlet side and the light outlet side of the substrate are both inclined planes.

The embodiment of the utility model provides another kind of technical scheme: an optical module comprises an optical fiber ferrule and the lens module, wherein the optical fiber ferrule is fixed in the V-shaped groove.

Further, still include the speculum, the speculum is installed on the side of advancing of lens module.

Furthermore, the reflector is adhered to the lens module through adhesive.

The lens assembly further comprises a plurality of optical filters, and the optical filters are sequentially arranged on the light emergent side of the lens assembly in a straight line shape.

Furthermore, each optical filter is bonded on the lens module through glue.

Further, the array detector receives the light beams processed by the array lens and the filters.

Compared with the prior art, the beneficial effects of the utility model are that:

1. adopt the function of the integrated collimating lens of base member, prism and array lens to integrated V type groove, can be convenient passive location the optic fibre lock pin in the lens module with advance the light side collimating lens of lens module and align, realize the collimator and need not the function of coupling, reach the purpose that production efficiency promotes and cost reduction.

2. And the plastic is integrally formed, so that the cost is greatly reduced.

Drawings

Fig. 1 is a schematic view of a first view angle of an optical module according to an embodiment of the present invention;

fig. 2 is a schematic view of a second view angle of an optical module according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an optical path of an optical module according to an embodiment of the present invention;

in the reference symbols: 1-a substrate; 2-optical fiber inserting core; 3-a mirror; 4-a lens module; 5-a first optical filter; 6-a second optical filter; 7-a third optical filter; 8-a fourth optical filter; 9-array detector.

Detailed Description

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The first embodiment is as follows:

please refer to fig. 1 to 3, an embodiment of the present invention provides a lens module, which includes a base integrated with a collimating lens, an inclined block, a prism and an array lens, wherein the collimating lens, the prism and the array lens are sequentially arranged along a direction of a light path, a V-shaped groove for installing an optical fiber ferrule 2 is arranged on the base, and an end of the V-shaped groove extends to be aligned with the collimating lens. In this embodiment, adopt the function of the integrated collimating lens of base member, prism and array lens to integrated V type groove, can be convenient passive location optic fibre lock pin 2 to lens module 4 in with the entering light side collimating lens of lens module 4 align, realize that the collimater need not the function of coupling, reach the purpose that production efficiency promoted and cost reduction. In particular, the integration reduces the number of parts of the optical device, which can simplify the assembly process. After the light of the optical fiber ferrule 2 enters the lens module 4, the collimating lens on the light inlet side of the lens module 4 changes the divergent light of the optical fiber ferrule 2 into collimated light and then outputs the collimated light from the light outlet side. Because the V-shaped groove is aligned with the collimating lens, the coupling can be completed after the optical fiber ferrule 2 is fixedly installed as required, and the coupling is not needed. Preferably, the collimating lens, the prism and the array lens are all formed on the substrate in an open mold mode. The substrate is an optical plastic substrate. The lens module 4 is manufactured by adopting a plastic integral molding process, so that the cost can be further reduced. The optical plastic mold opening and integrated molding technology is the prior art, the existing glass or silicon materials can be skillfully replaced by the mode, and the current situation of low production efficiency and high cost in the prior art is changed by adopting a single cold processing mode. Preferably, the plastic used is an optically clear plastic, such as polyetherimide. The shape and size of the arranged V-shaped groove are matched with the optical fiber inserting core 2, so that the optical fiber inserting core is convenient to fix. The V-shaped groove is manufactured in the integrated molding process, and is not required to be manufactured additionally, so that the efficiency is improved.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the light inlet side and the light outlet side of the substrate are both inclined planes. In this embodiment, the substrate is an angled substrate, and the angle of the tilt can be adjusted according to the path of the actual optical path, which is not limited in this embodiment.

Example two:

referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present invention provides an optical module, including an optical fiber ferrule 2 and the lens module 4, where the optical fiber ferrule 2 is fixed in the V-shaped groove. In this embodiment, with foretell lens module 4 application to the optical module, adopt the function of the integrated collimating lens of base member, prism and array lens to integrated V type groove, can be convenient passive location of optic fibre lock pin 2 to lens module 4 in with the entering light side collimating lens of lens module 4 align, realize that the collimater need not the function of coupling, reach the purpose that production efficiency promoted and cost reduction. In particular, the integration reduces the number of parts of the optical device, which can simplify the assembly process. After the light of the optical fiber ferrule 2 enters the lens module 4, the collimating lens on the light inlet side of the lens module 4 changes the divergent light of the optical fiber ferrule 2 into collimated light and then outputs the collimated light from the light outlet side. Because the V-shaped groove is aligned with the collimating lens, the coupling can be completed after the optical fiber ferrule 2 is fixedly installed as required, and the coupling is not needed. Preferably, the collimating lens, the prism and the array lens are all formed on the substrate in an open mold mode. The substrate is a plastic substrate. The lens module 4 is manufactured by adopting a plastic integral molding process, so that the cost can be further reduced. The optical plastic mold opening and integrated molding technology is the prior art, the existing glass or silicon materials can be skillfully replaced by the mode, and the current situation of low production efficiency and high cost in the prior art is changed by adopting a single cold processing mode. Preferably, the plastic used is an optically clear plastic such as polyetherimide.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the optical module further includes a reflector 3, and the reflector 3 is installed on the light inlet side of the lens module 4. In this embodiment, the reflector 3 is made of glass or silicon, and has a total reflection function for light. Preferably, the reflector 3 is bonded to the lens module 4, specifically to the substrate, by means of an adhesive.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the optical module further includes a plurality of optical filters, and each of the optical filters is arranged in a line in sequence on the light emitting side of the lens assembly. In the present embodiment, four filters are provided, and for convenience of reference, they are defined as a first filter 5, a second filter 6, a third filter 7 and a fourth filter 8, respectively, and all of the four filters transmit light of a specific wavelength and reflect light of other wavelengths.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the optical module further includes an array detector 9 for receiving the light beams processed by the array lens and the optical filters. In this embodiment, the array detector 9 receives light and can convert the light signal into an electrical signal.

As an optimization scheme of the embodiment of the present invention, please refer to fig. 1, the array detector 9 and the lens assembly are both disposed on the substrate 1. In this embodiment, the substrate 1 may be a printed circuit board or a ceramic substrate 1 or a metal substrate 1 (tungsten copper or kovar alloy) or a glass substrate or other materials, and plays a supporting role of the whole optical device.

The working principle of the optical module is as follows:

the light of the optical fiber ferrule 2 enters the lens module 4, and the light entering side collimating lens of the lens module 4 changes the divergent light of the optical fiber ferrule 2 into collimated light. Four optical filters divide four wavelengths, and the collimating light of speculum 3 total reflection, four array collecting lens that the collimating light that the beam of four is divided passes through the light-emitting side of lens module 4 converge the collimating light to array detector 9 on.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A lens module, characterized in that: the optical fiber connector comprises a base body, wherein a collimating lens, a prism and an array lens are integrated on the base body, the collimating lens, the prism and the array lens are sequentially arranged along the direction of a light path, a V-shaped groove for installing an optical fiber inserting core is formed in the base body, and the tail end of the V-shaped groove extends to be aligned with the collimating lens.

2. The lens module of claim 1, wherein: and the collimating lens, the prism and the array lens are all molded on the substrate in an open mode.

3. The lens module of claim 2, wherein: the substrate is an optical plastic substrate.

4. The lens module of claim 1, wherein: the light inlet side and the light outlet side of the substrate are both inclined planes.

5. An optical module, comprising a fiber stub, characterized in that: the lens module of any of claims 1-4, further comprising the fiber stub secured in the V-groove.

6. The optical module of claim 5, wherein: still include the speculum, the speculum is installed on the light side of advancing of lens module.

7. The light module of claim 6, wherein: the reflector is adhered to the lens module through adhesive.

8. The optical module of claim 5, wherein: the lens component is characterized by further comprising a plurality of optical filters, and the optical filters are sequentially arranged on the light emergent side of the lens component in a straight line shape.

9. The optical module of claim 8, wherein: and the optical filters are bonded on the lens module through glue.

10. The optical module of claim 8, wherein: the array detector is used for receiving the light beams processed by the array lens and the filters.